CN108473875B

CN108473875B - Method for heating material layer and moving bed system

Info

Publication number: CN108473875B
Application number: CN201780001301.8A
Authority: CN
Inventors: 付晓惠
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-29
Filing date: 2017-07-28
Publication date: 2019-12-27
Anticipated expiration: 2037-07-28
Also published as: CN107663581A; CN108473875A; CN107663581B

Abstract

A method for heating material layer and moving bed system, the method for heating material layer covers the new material layer with the lower material layer which is not heated to meet the technological requirement, not only can make the lower material layer which is not heated to meet the technological requirement be heated to meet the technological requirement at the same temperature with the upper material layer, but also does not increase the tail gas temperature passing through the material layer bottom and the material layer bearing position of the moving bed, or does not increase the heat intensity of the position below the material layer bottom. The moving bed system can continuously separate and discharge an upper material layer meeting the process requirement and a lower material layer which does not meet the process requirement when the trolley moves to a discharging position at a discharging end of the moving bed, creates necessary conditions for discharging the lower material layer which does not meet the process requirement from the discharging position to a corresponding moving bed to cover a new material layer at a position which receives the lower material layer which does not meet the process requirement by virtue of the action of gravity, and simplifies the material distribution process of covering the new material layer by the material layer which does not meet the process requirement.

Description

Method for heating material layer and moving bed system

Technical Field

The invention relates to a method for heating materials, in particular to a method for heating a material layer on a moving bed, which is suitable for the technical fields of material drying, dry distillation, roasting and the like. The invention also relates to a moving bed system.

Background

Background art example 1: a moving bed dry distillation heating furnace with multi-stage discharging [ application publication No. CN104164241.A ], the key point of the method for heating the material layer comprises: (1) the material forming the material layer is block material, ball material or powder material, (2) when the material layer is loaded by the material loading layer part, the moving bed material loading layer is on a plane, the moving bed material loading layer part moves in the horizontal direction, (3) the moving bed material loading layer part is airtight, (4) when the moving bed material loading layer part moves to the material loading position, a new material layer is added, (5) the moving bed material loading layer part moves from the material loading position to the material unloading position at a constant speed, (6) the upper material layer absorbs the heat of the material heating layer, the heat is transferred to the lower material layer through the upper material layer, (7) the upper material layer is heated before the lower material layer to meet the process requirement, (8) the upper material layer which moves to the upper material layer position where the material unloading is heated to meet the process requirement is heated layer by layer to the process requirement, (9) the upper material layer which moves to the upper material layer position where the material unloading is heated to meet the process requirement Discharging, (10) heating the lower material layer closer to the moving bed material bearing layer until the lower material layer closer to the moving bed material bearing layer meets the process requirement, and discharging, (11) heating until the thickness of the material layer meeting the process requirement is consistent with that of the new material layer after the new material layer is heated until the process requirement is met. The method for heating the material layer discharges the upper material layer heated to meet the process requirement, solves the problem of large difference of the heating rates of the upper material layer and the lower material layer, and improves the uniformity of material heating. The method for heating the material layer can heat the lower material layer close to the moving bed material bearing layer part to meet the process requirement under the same temperature condition with the upper material layer, but the method for heating the material layer can heat the lower material layer close to the moving bed material bearing layer part to meet the process requirement under the same temperature condition with the upper material layer, and simultaneously causes new technical contradiction, namely: the lower part of the material layer closer to the moving bed bearing material layer is required to be heated to meet the process requirement under the same temperature as the upper part of the material layer, the part below the lower part of the material layer closer to the moving bed bearing material layer is required to bear the corresponding thermal strength, the part below the lower part of the material layer closer to the moving bed bearing material layer is not required to bear the corresponding thermal strength, and the lower part of the material layer closer to the moving bed bearing material layer is not required to be heated to meet the process requirement under the same temperature as the upper part of the material layer. Under the condition that other factors are not changed, the lower material layer closer to the material bearing layer of the moving bed is heated to reach the temperature required by the process, so that the heat load born by the material bearing layer of the moving bed is increased inevitably, which means that the heat loss of the furnace bottom is increased, and the heat energy utilization efficiency is reduced.

Background art example 2: the process for roasting iron ore pellets, which is described in "optimizing the characteristics of iron oxide pellets" (sintered pellets, 3 rd year 1983), is characterized in that the method for heating the material layer mainly comprises the following steps: (1) the material forming the material layer is iron ore pellets or iron ore pellets internally provided with a small amount of carbonaceous fuel, (2) a plurality of trolleys with sequentially connected head ends and tail ends form a moving bed bearing material layer part, namely: the material loading part of the belt roasting machine consists of a plurality of trolleys with head ends and tail ends connected in sequence, the geometric shapes and geometric parameters of the corresponding parts of the trolleys are consistent, the grate bars on the bottom of the trolley are distributed on a plane, two sides of the bottom of the trolley are provided with baffle plates, (3) a new material layer is added on the trolleys when the trolleys move to the feeding position of the feeding end of the belt roasting machine, (4) the trolleys move from the feeding position of the feeding end of the belt roasting machine to the discharging end at a constant speed, the trolleys move linearly on a horizontal plane, (5) the material layer on the trolleys sequentially passes through the drying section, the preheating section, the roasting section and the cooling section of the belt roasting machine, and (6) when the material layer on the trolleys passes through the preheating section and the roasting section of the belt roasting machine, heat-carrying gas enters the material layer from the top of the material layer, tail gas leaves the material layer from the bottom of the material layer, (7) after the trolley passes through the roasting section of the belt roasting machine, the upper material layer and the lower material layer on the trolley finish the roasting process, and (8) after the material layer on the trolley is cooled through the cooling section of the belt roasting machine, the trolley moves to the discharging end of the belt roasting machine to turn over, when the trolley turns over to a certain angle, the upper material layer and the lower material layer on the trolley are discharged together, and the discharging process is discontinuous. (9) Heating to the thickness of the material layer meeting the process requirement and the thickness of the new material layer after heating to the thickness meeting the process requirement are consistent. Fig. 3 shows the temperature difference of different parts of the upper material layer of the lower belt type roasting machine with specific material layer thickness in the production process of the iron concentrate oxidized pellet. It can be seen from the thermal relationship curve of the pellet material layer that the middle material layer reaches the consolidation starting temperature only after the surface material layer enters the roasting section for about half of the time, and the temperature of the bottom of the material layer is still about 400 ℃ lower than that of the middle material layer. At the end of the firing section, the temperature at the bottom of the bed reaches the consolidation start temperature. The problems of overburning of the upper material layer and underfiring of the lower material layer obviously exist. If the method for heating the material layer disclosed in application publication No. CN104164241.A is adopted, the upper material layer which is roasted until the process requirement is met is discharged, which is beneficial to heating the lower material layer close to the part of the moving bed bearing material layer to the process requirement under the same temperature with the upper material layer, but the new technical contradiction is that: the lower material layer closer to the material bearing layer of the moving bed is heated to meet the process requirement under the same temperature condition with the upper material layer, and the temperature of the heat-carrying tail gas passing through the bottom of the lower material layer closer to the material bearing layer of the moving bed is inevitably equal to the temperature of the heat-carrying tail gas corresponding to the process requirement when the lower material layer closer to the material bearing layer of the moving bed is heated to meet the process requirement under the same temperature condition with the upper material layer; the temperature of the heat-carrying tail gas passing through the bottom of the lower material layer closer to the moving bed material-bearing layer is not changed into that of the heat-carrying tail gas corresponding to the process requirement when the lower material layer closer to the moving bed material-bearing layer is heated to the same temperature as the upper material layer, and the lower material layer closer to the moving bed material-bearing layer cannot be heated to the same temperature as the upper material layer until the process requirement is met. Under the condition that other factors are not changed, as long as the lower material layer at the position closer to the moving bed material bearing layer is heated to reach the temperature required by the process, the temperature of heat-carrying tail gas penetrating through the bottom of the lower material layer at the position closer to the moving bed material bearing layer is inevitably increased, which means that the heat-carrying gas heat energy utilization efficiency is reduced and the heat load at the position of the moving bed material bearing layer is increased.

The above problems are also present in the same manner as in the above process, in which the heating bed such as the ore pellets is baked with the heat transfer gas.

Background art example 3: the key points of the method for heating the material layer of the sintering process introduced in the theory and process of sintering and pelletizing (edited by the main of Zhangquan, published by the chemical industry Press, Beijing edition No. 1 of 9 months in 2015) are as follows: (1) the material forming the material layer is pellet material mixed with carbonaceous fuel in iron ore powder, (2) a plurality of trolleys with head ends and tail ends connected in sequence form a moving bed material bearing layer part, namely: the material layer loading part of the strand sintering machine is composed of a plurality of trolleys with head ends and tail ends connected in sequence, the geometric shapes and geometric parameters of the corresponding parts of each trolley are consistent, the grate bars on the bottom of each trolley are distributed on a plane, two sides of the bottom of each trolley are provided with baffle plates, (3) a new material layer is added on each trolley when the trolley runs to the feeding position of the feeding end of the strand sintering machine, (4) the trolley moves from the feeding position of the feeding end of the strand sintering machine to the discharging end at a constant speed, the trolley moves linearly on a horizontal plane, (5) when the trolley passes through the material layer ignition section of the strand sintering machine, the flame sprayed by a burner ignites the upper surface material layer in the material layer, (6) the ignited material layer combusts automatically under the combustion-supporting air to form a combustion layer, (7) the combustion-supporting air enters the material layer from the top of the material layer, the combustion tail gas leaves the material layer from the bottom of the material layer, and passes, the combustion layer of the bed moves from top to bottom, the bed of material of the upper portion finishes the combustion process before the bed of material of the lower portion, (8) the combustion air is heated by the bed of material of the combustion process when finishing the bed of material of the combustion process, the waste heat in the bed of material finishing the combustion process is brought to the bed of material under the bed of material finishing the combustion process by the combustion air, (9) when the lower bed of material on the loop wheel machine finishes the combustion process, the loop wheel machine moves to the discharge end of the sintering machine of the belt type, the loop wheel machine takes place to overturn, the upper bed of material and lower bed of material on the loop wheel machine are discharged together when the loop wheel machine overturns to certain angle, the discharge process is discontinuous, (10) the thickness of the bed of material which the heating reaches the. The method for heating the material layer has the limitations that the lower material layer which is closer to the moving bed material-bearing layer needs to complete the combustion process at the position which is closer to the moving bed material-bearing layer, so that the temperature of the combustion tail gas which penetrates through the bottom of the material layer is the temperature of the combustion tail gas which corresponds to the combustion process which is completed at the position which is closer to the moving bed material-bearing layer by the lower material layer, the heat energy utilization efficiency is influenced, the trolley grate bars are enabled to bear higher heat intensity, and the service life of the grate bars is influenced. If the method for heating the material layer disclosed in application publication No. CN104164241.A is adopted, the upper material layer which completes the combustion process is discharged, the lower material layer which is closer to the moving bed material-bearing layer still needs to complete the combustion process at the position closer to the moving bed material-bearing layer, the temperature of the combustion tail gas which passes through the bottom of the material layer is still the temperature of the combustion tail gas which is corresponding to the combustion process which is completed at the position closer to the moving bed material-bearing layer by the lower material layer, and the limitations which influence the heat energy utilization efficiency and influence the service life of the grate bars can not be overcome.

The above background art example and its brief analysis show that the upper material layer heated to meet the process requirement is discharged, so that the lower material layer can be heated to meet the process requirement at the same temperature as the upper material layer, and the same technical contradiction is faced. Namely: under the condition that tail gas passes through the bottom of the material layer and the material bearing layer of the moving bed, the material layer closer to the material bearing layer of the moving bed is heated to meet the process requirement under the same temperature of the material layer higher than the material layer, and the temperature of the tail gas passing through the bottom of the material layer and the material bearing layer of the moving bed is inevitably changed into the temperature corresponding to the process requirement when the material layer closer to the material bearing layer of the moving bed is heated to meet the process requirement under the same temperature of the material layer higher than the material layer, and the material bearing layer of the moving bed bears the corresponding heat intensity. Under the condition that the material bearing layer of the moving bed is not air-tight, the lower material layer closer to the material bearing layer of the moving bed is heated to meet the process requirement at the same temperature as the upper material layer, and the lower material layer closer to the material bearing layer of the moving bed is inevitably subjected to the corresponding thermal strength. The new technical contradiction brings the following results: or the lower material layer which is closer to the material bearing layer of the moving bed is not heated to meet the process requirement under the same temperature with the upper material layer, or the heat energy utilization efficiency is reduced.

Disclosure of Invention

The invention provides a method for heating a material layer, which aims to solve the technical problems that: under the condition that heat-carrying tail gas passes through the material layer bottom and the moving bed material-carrying layer part, the lower material layer can be heated to meet the process requirement at the same temperature as the upper material layer, the temperature of the heat-carrying tail gas passing through the material layer bottom and the moving bed material-carrying layer part is not changed to the temperature of the heat-carrying tail gas corresponding to the process requirement when the lower material layer is heated to meet the process requirement at the same temperature as the upper material layer, and the moving bed material-carrying layer part is not subjected to the corresponding heat intensity; under the condition that the material bearing layer part of the moving bed is not air-tight, the lower material layer can be heated to meet the process requirement under the same temperature condition with the upper material layer, and the material bearing layer part of the moving bed is also subjected to the corresponding heat intensity.

The invention provides a moving bed system, which aims to solve the technical problem that when a trolley forming a moving bed moves to a discharging position of a discharging end of the moving bed, an upper material layer meeting the process requirement and a lower material layer not meeting the process requirement on the trolley can be continuously and separately discharged, and necessary conditions are created for covering a new material layer by moving the lower material layer discharged from the discharging end of each moving bed to a corresponding position, which receives the lower material layer, of the moving bed, which receives the lower material layer under the action of gravity.

In order to solve the technical problems, the invention provides the following technical scheme.

The technical scheme of the moving bed system is as follows:

a moving bed consisting of a plurality of trolleys with head ends and tail ends connected in sequence.

The trolley moves at a constant speed from the feeding position of the feeding end of the moving bed to the discharging position of the discharging end of the moving bed.

The trolley moves to the discharge end of the moving bed to turn over.

The corresponding parts of the trolleys forming the same moving bed have the same geometric shape.

The corresponding parts of the trolleys forming the same moving bed have the same geometrical parameters.

From the charging position of the trolley at the charging end of the moving bed to the position of the trolley about to turn over at the discharging end of the moving bed, the inclination angle between the surface of the trolley bottom, which is directly contacted with the material layer, and the horizontal plane is smaller than the inclination angle of relative motion between the materials forming the material layer born by the trolley.

Further, at the discharge end of the moving bed, when the trolley is turned to the discharge position, the surface of the trolley chassis in direct contact with the material layer moves on the surface consistent with the surface of the trolley chassis in direct contact with the material layer.

Furthermore, any moving bed receives the position of the lower material layer which does not meet the process requirement and covers the new material layer, and the position is arranged below the discharging end of the moving bed.

Further, from the position where the trolley starts to turn over at the discharging end of the moving bed to the discharging position of the trolley at the discharging end of the moving bed, the inclination angle between the plane where the trolley bottom is in direct contact with the material layer and the horizontal plane is smaller than the inclination angle of relative movement between materials forming the material layer and borne by the trolley.

Scheme 1: the number of the moving bed is one

The moving bed receives the position of the lower material layer covering the new material layer and is arranged below the discharging end of the moving bed.

The trolley forming the moving bed has a section of inclined spiral surface on the surface where the bottom of the trolley is directly contacted with the material layer. And the oblique helicoid on which the right-angle material layer is directly positioned at the bottom of the vehicle is positioned above the other section of the positive helicoid or above the other section of the oblique helicoid, and one of the two can be selected.

Scheme 2: the number of the moving bed is two

Any one moving bed receives the position of the lower material layer which does not meet the process requirement and covers the new material layer, and is arranged below the discharging end of the other moving bed.

Scheme 2-1: under the condition that the geometry of the corresponding part of the trolley forming any one of the moving beds is consistent with the geometry of the corresponding part of the trolley forming the other moving bed:

scheme 2-1-1: the trolley forming the moving bed has a section of inclined spiral surface on the surface where the bottom of the trolley is directly contacted with the material layer. And the bottom of the trolley forming the moving bed is directly contacted with the inclined spiral surface where the material layer is positioned, and the inclined spiral surface is arranged above the other section of the positive spiral surface or above the other section of the inclined spiral surface.

Scheme 2-1-2: the trolley forming the moving bed has a conical surface (note that a section of straight generatrix and an axis form a certain inclination angle, the end point of the straight generatrix is not on the axis, and the straight generatrix rotates around the axis by a certain angle to form a section of curved surface) on the surface where the material layer is directly contacted with the bottom of the trolley. And the bottom of the trolley forming the moving bed is directly contacted with the conical surface where the material layer is positioned, and either the trolley or the trolley is arranged above the other section of conical surface or a section of sector surface (note: the part which is remained after a larger sector surface cuts a smaller sector surface with the same circle center and the same arc angle).

Schemes 2-1-3: the trolley forming the moving bed has a cylindrical surface on the surface where the bottom of the trolley is directly contacted with the material layer. And the bottom of the trolley forming the moving bed is directly contacted with the cylindrical surface where the material layer is positioned and is arranged above a section of rectangular plane.

Scheme 2-2: under the condition that the geometry of the corresponding part of the trolley composing one moving bed is not consistent with the geometry of the corresponding part of the trolley composing the other moving bed:

scheme 2-2-1: the trolley forming the moving bed has one section of a positive spiral surface or one section of an oblique spiral surface below the surface of the part of the trolley bottom directly contacting the material layer; the surface under the surface of the part of the trolley, which is directly contacted with the material layer, at the bottom of the trolley forms the other moving bed is a section of conical surface or a section of sector, and the two can be selected from one.

The trolley which forms the moving bed is characterized in that the surface of the trolley bottom which is directly contacted with the material layer is a section of inclined spiral surface; the trolley which forms the other moving bed has a conical surface at the bottom of the trolley, which is directly contacted with the material layer.

Scheme 2-2-2: the trolley of one moving bed is composed of a conical surface below the surface of the bottom of the trolley, which is directly contacted with the material layer, and the trolley of the other moving bed is composed of a sector surface below the surface of the bottom of the trolley, which is directly contacted with the material layer.

The trolley which forms the moving bed has a conical surface on the surface where the bottom of the trolley is directly contacted with the material layer; the trolley which forms the other moving bed has a conical surface at the bottom of the trolley, which is directly contacted with the material layer.

Scheme 3: the number of the moving bed is three

Any one of the moving beds receives a lower material layer at a position covering a new material layer, below the discharge end of the other moving bed adjacent to the lower material layer.

Scheme 3-1: under the condition that the geometry of the corresponding part of the trolley forming any one of the moving beds is consistent with the geometry of the corresponding part of the trolley forming another moving bed adjacent to the trolley:

scheme 3-1-1: the trolley forming the moving bed has a section of inclined spiral surface on the surface where the bottom of the trolley is directly contacted with the material layer. And the bottom of the trolley forming the moving bed is directly contacted with the inclined spiral surface where the material layer is positioned, and either the inclined spiral surface or the positive spiral surface is arranged above the other section of the inclined spiral surface.

Scheme 3-1-2: the trolley forming the moving bed has a conical surface on the surface where the bottom of the trolley is directly contacted with the material layer. And the bottom of the trolley forming the moving bed is directly contacted with the conical surface where the material layer is positioned, and either the conical surface at the other section or the sector at the section is arranged above the conical surface at the other section.

Scheme 3-2: the trolley forming the moving bed has a conical surface below the surface of the part of the bottom, which is directly contacted with the material layer; the trolley which forms the other two moving beds has a sector below the surface of the part of the trolley bottom which is directly contacted with the material layer.

The trolley forming the moving bed has a conical surface on the surface where the bottom of the trolley is directly contacted with the material layer.

Scheme 3-3: the trolley of one moving bed is composed of a sector surface below the surface of the material layer directly contacted with the bottom of the trolley, and the trolley of the other two moving beds is composed of a conical surface below the surface of the material layer directly contacted with the bottom of the trolley.

Scheme 4: the number of the moving beds is four.

Scheme 4-1: the trolley forming the moving bed has a section of inclined spiral surface on the surface where the bottom of the trolley is directly contacted with the material layer. And the bottom of the trolley forming the moving bed is directly contacted with the inclined spiral surface where the material layer is positioned, and either the inclined spiral surface or the positive spiral surface is arranged above the other section of the inclined spiral surface.

Scheme 4-2: the trolley forming the moving bed has a conical surface on the surface where the bottom of the trolley is directly contacted with the material layer. And the bottom of the trolley forming the moving bed is directly contacted with the conical surface where the material layer is positioned, and either the conical surface at the other section or the sector at the section is arranged above the conical surface at the other section.

Scheme 1, scheme 2, scheme 3, scheme 4:

the head end and the tail end of the surface where the material layer is directly contacted with the bottom of the trolley are arranged on the head end surface and the tail end surface of the bottom of the trolley or are close to the head end surface and the tail end surface of the bottom of the trolley.

The head end and the tail end of the surface below the surface where the material layer is directly contacted with the bottom of the trolley are arranged on the head end surface and the tail end surface of the bottom of the trolley.

The included angle between the head end and the tail end of the surface where the vehicle bottom directly contacts the material layer is consistent with the included angle between the head end and the tail end of the surface below the surface where the vehicle bottom directly contacts the material layer.

Moving on a surface below the surface of the trolley at which the bottom of the trolley is in direct contact with the material layer and on a surface consistent with the surface below the surface of the trolley at which the bottom of the trolley is in direct contact with the material layer from the feeding position of the trolley at the feeding end of the moving bed to the position of the trolley about to turn over at the discharging end of the moving bed.

Scheme 1, scheme 3, scheme 4:

the axis of the surface of the trolley which forms the moving bed and the bottom of which is directly contacted with the material layer is vertical to and intersected with the axis of the surface below the surface of the bottom of which is directly contacted with the material layer.

According to the number of the trolleys between the tail end of the trolley at the feeding position of the feeding end of the moving bed and the head end of the trolley at the position where the trolley at the discharging end of the moving bed is about to turn over, the angle of an included angle between the head end of the surface where the trolley at the bottom of the trolley at the direct contact material layer position of the trolley is located and the tail end of the surface where the trolley at the bottom of the moving bed is located and the tail end of the material layer is determined.

In the above-mentioned scheme 2, the surface of the bottom of the cart constituting the moving bed, which directly contacts the material layer, is a section of inclined spiral surface, the surface of the cart constituting the moving bed, which directly contacts the material layer, is a section of regular spiral surface or a section of inclined spiral surface, or the surface of the cart constituting the moving bed, which directly contacts the material layer, is a section of conical surface, and the surface of the cart constituting the moving bed, which directly contacts the material layer, is a section of conical surface or a sector surface:

Scheme 1, scheme 2, scheme 3, scheme 4: moving on a surface below the surface of the trolley at which the bottom of the trolley is in direct contact with the material layer and on a surface consistent with the surface below the surface of the trolley at which the bottom of the trolley is in direct contact with the material layer from the feeding position of the trolley at the feeding end of the moving bed to the position of the trolley about to turn over at the discharging end of the moving bed.

The technical scheme of the method for heating the material layer is as follows:

and a material bearing layer of the moving bed is moved by the support material layer along with the material bearing layer.

And adding a new material layer when the position of the material bearing layer of the moving bed moves to the position for adding the new material layer.

The material bearing layer of the moving bed moves at a constant speed from the feeding position to the discharging position.

The upper material layer is heated before the lower material layer until the technological requirement is met.

And heating the upper material layer moved to the position of discharging the upper material layer heated to meet the process requirement until the process requirement is met.

And heating the upper material layer moved to the position of discharging and heating the upper material layer to meet the process requirement until the upper material layer meeting the process requirement is discharged.

And the thickness of the upper material layer heated to meet the process requirement is consistent with the thickness of the added new material layer heated to meet the process requirement.

Further, the lower material layer which is not heated to meet the process requirements and is moved to a position for discharging the lower material layer which is not heated to meet the process requirements is discharged.

And further, moving the discharged lower material layer which is not heated to meet the process requirement to a position where the corresponding moving bed receives the lower material layer which is not heated to meet the process requirement and covers a new material layer, and covering the new material layer with the lower material layer which is not heated to meet the process requirement.

Class 1 technical solution

The material forming the material layer is a pellet material internally mixed with carbonaceous fuel.

After the lower material layer which is not heated to meet the process requirements covers the new material layer, combustion-supporting air enters the material layer from the top of the material layer, the carbonaceous fuel in the pellet material of the material layer is formed by combustion, and combustion tail gas leaves the material layer from the bottom of the new material layer and enters a tail gas box below the moving bed.

The pellet burning layer moves from top to bottom.

The combustion-supporting air is heated by the material layer after the combustion process when passing through the material layer after the combustion process is finished, and the residual heat in the material layer after the combustion process is brought to the material layer below the material layer after the combustion process by the combustion-supporting air.

By adopting the moving bed system provided by the invention, the number of the moving beds forming the moving bed system is one, two, three or four.

The moving bed is formed by a trolley with the trolley bottom having a ventilation function, for example, the surface of the trolley bottom, which is directly contacted with a material layer, is formed by grid bars with gaps between the grid bars.

Scheme 1-1: the upper material layer heated to meet the process requirements specifically comprises the following steps: moving to the discharge end of the moving bed to complete a part of the material layer in the combustion process; the lower material layer which is heated to a temperature lower than the process requirement is specifically as follows: the other part of the material layer which is moved to the discharge end of the moving bed and finishes the combustion process and the material layer which does not finish the combustion process.

Scheme 1-1-1: the upper material layer heated to meet the process requirements specifically comprises the following steps: a part of the lower material layer which is not heated to meet the process requirements and covers the new material layer at the position covering the new material layer and is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: the other part of the lower material layer which is not heated to meet the process requirements and the new material layer which is moved to the discharge end of the moving bed and covers the new material layer at the position covering the new material layer.

Schemes 1-1-2: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and covers the new material layer at the position covering the new material layer is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to a new layer at the discharge end of the moving bed.

Schemes 1-1-3: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and a part of material layers in the new material layer are covered at the position where the new material layer is covered, which is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: another part of the new bed moving to the discharge end of the moving bed.

Schemes 1-2: the upper material layer heated to meet the process requirements specifically comprises the following steps: a material layer which is moved to the discharge end of the moving bed and completes the combustion process; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: a layer of material which has not completed the combustion process and which has moved to the discharge end of the moving bed.

Scheme 1-1, 1-2, under the condition that the number of moving beds in the moving bed system is two:

the moving bed is composed of a trolley with a section of inclined spiral surface on the surface where the trolley bottom is directly contacted with the material layer.

Or the moving bed is formed by a trolley with a section of conical surface on the surface where the bottom of the trolley directly contacts the material layer.

Or one moving bed is a moving bed consisting of a section of inclined spiral-surface trolley on the surface where the trolley bottom directly contacts the material layer, and the other moving bed is a moving bed consisting of a section of conical-surface trolley on the surface where the trolley bottom directly contacts the material layer.

In the scheme 1-1 and 1-2, the influence of the broken pellet materials in the lower material layer which are not heated to meet the process requirement and cover the new material layer on the air permeability of the material layer is limited within the degree that the air permeability of the material layer can meet the process requirement. Otherwise, the present invention is not applicable.

In the scheme 1-1 and 1-2, after the lower material layer which is not heated to meet the process requirement is covered with the new material layer, the thickness of the material layer is smaller than the thickness which makes the air permeability of the material layer incapable of meeting the process requirement.

In the schemes 1-1 and 1-2, when the lower material layer which is not heated to meet the process requirement covers the new material layer, the lower material layer in the lower material layer which is not heated to meet the process requirement covers the new material layer in the direction consistent with the moving direction of the covered new material layer before the upper material layer in the lower material layer which is not heated to meet the process requirement.

Class 2 technical solution

The material forming the material layer is pellet material, or granular material obtained by crushing ore, or granular grain.

After the lower material layer which is not heated to meet the process requirement covers the new material layer, the heat-carrying gas enters the material layer from the top of the material layer, and the heat-carrying tail gas leaves the material layer from the bottom of the new material layer, passes through the material-carrying part of the moving bed and enters a tail gas box below the moving bed.

By adopting the moving bed system provided by the invention, the number of the moving beds forming the moving bed system is one, two, three or four. The moving bed is formed by the trolley with the ventilating function at the bottom of the trolley, for example, the surface of the part of the trolley bottom, which is directly contacted with the material layer, is formed by the grid bars with gaps between the grid bars.

Scheme 2-1: the upper material layer heated to meet the process requirements specifically comprises the following steps: a part of the lower material layer which is not heated to meet the process requirements and covers the new material layer at the position covering the new material layer and is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: the other part of the lower material layer which is not heated to meet the process requirements and the new material layer which is moved to the discharge end of the moving bed and covers the new material layer at the position covering the new material layer.

Under the condition that the number of the moving beds in the moving bed system is two:

When the lower material layer which is not heated to meet the process requirement covers the new material layer, the lower material layer in the lower material layer which is not heated to meet the process requirement covers the new material layer in the direction consistent with the moving direction of the covered new material layer, and the upper material layer in the lower material layer which is not heated to meet the process requirement covers the new material layer in advance of the lower material layer in the lower material layer which is not heated to meet the process requirement.

Scheme 2-2: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and covers the new material layer at the position covering the new material layer is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to a new layer at the discharge end of the moving bed.

In the scheme 2-1 and the scheme 2-2, under the condition that the materials forming the material layer are the pellet materials, the pellet materials in the lower material layer which are not heated to meet the process requirement and cover the new material layer are broken to influence the air permeability of the material layer, and the air permeability of the material layer is limited within the degree that the air permeability of the material layer can meet the process requirement. Otherwise, the present invention is not applicable.

Scheme 2-1 and scheme 2-2, after the lower material layer which is not heated to meet the process requirements is covered with a new material layer, the thickness of the material layer is smaller than the thickness which makes the air permeability of the material layer not capable of meeting the process requirements.

Class 3 technical solution

The material forming the material layer is a powdery material, or a pellet material, or a block material, or a mixture of the powdery material and the carbonaceous material.

The upper material layer absorbs the heat of the heating material layer, and the heat is transferred to the lower material layer through the upper material layer.

The material bearing layer is carried by the air-tight moving bed at the material bearing layer.

Scheme 3-1: the upper material layer heated to meet the process requirements specifically comprises the following steps: a part of the lower material layer which is not heated to meet the process requirements and covers the new material layer at the position covering the new material layer and is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: the other part of the lower material layer which is not heated to meet the process requirements and the new material layer which is moved to the discharge end of the moving bed and covers the new material layer at the position covering the new material layer.

Scheme 3-2: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and is covered with the new material layer at the position covered with the new material layer and moved to the discharge end of the moving bed, and the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to a new layer at the discharge end of the moving bed.

Class 4 technical solution

The material forming the material layer is a powdery material, or a pellet material, or a block material, or a mixture of the powdery material and a coke or coal granular material.

When the material layer is loaded by the material loading layer part, the material loading layer is loaded by the moving bed on one plane.

Scheme 4-1: the upper material layer heated to meet the process requirements specifically comprises the following steps: moving to a position for discharging an upper material layer heated to meet the process requirement, covering the lower material layer which is not heated to meet the process requirement and a part of material layers in the new material layer at the position for covering the new material layer; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to discharge the other part of the new material layer which is not heated to the lower material layer position meeting the process requirement.

Scheme 4-2: the upper material layer heated to meet the process requirements specifically comprises the following steps: moving to a lower material layer which is discharged and heated to the position of the upper material layer meeting the process requirement, and covering the new material layer at the position covering the new material layer, wherein the lower material layer which is not heated to meet the process requirement is not heated; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to discharge a new material layer which is not heated to the lower material layer position meeting the process requirement.

Specifically, the following description is provided: the invention provides a method for heating a material layer, in particular to a method for heating a material layer after a production line starting process is switched to a normal production process. The method for heating the material layer provided by the invention is defined from the time perspective, the starting process of the production line before the lower material layer which is not heated to meet the process requirement is obtained from the lower material layer which is not heated to meet the process requirement is obtained, and the heating mode is not limited by the method for heating the material layer provided by the invention. The method for heating the material layer is defined from the space angle, and is calculated from the position of the lower material layer which is not heated to meet the process requirement and covers the newly added material layer. For example, if a particular process requires drying a new bed of material on a moving bed into which the new bed is being added before the lower bed that has not been heated to process requirements is overlaid with the newly added bed, the drying process may be heated in a manner that is not limited by the provision of hot carrier gas entering the bed from above the bed and drying off-gas passing through the bottom of the bed and the area of the moving bed carrier bed.

The invention can obtain the following beneficial effects:

firstly, the method for heating the material layer provided by the invention covers the new material layer by the lower material layer which is not heated to meet the process requirement, so that the lower material layer which is closer to the moving bed material bearing layer does not need to be heated to meet the process requirement at the position which is closer to the moving bed material bearing layer, but is heated to meet the process requirement on the new material layer which is covered by the lower material layer which is not heated to meet the process requirement. Thus, under the condition that the heat-carrying tail gas passes through the material bed bottom and the moving bed material-bearing layer part, by utilizing the heat absorption effect of the new material bed, not only the lower material bed which is not heated to meet the process requirement can be heated to meet the process requirement at the same temperature as the upper material bed, but also the heat-carrying tail gas which passes through the material bed bottom and the moving bed material-bearing layer part can not be heated to reach the process requirement at the position close to the moving bed material-bearing layer at the same temperature as the upper material bed, and the moving bed material-bearing layer part can not bear the heat intensity as that the lower material bed which is close to the moving bed material-bearing layer part is heated to meet the process requirement at the position close to the moving bed material-bearing layer at the same temperature as the upper material bed; under the condition that the moving bed material bearing layer part is airtight, the moving bed material bearing layer part cannot bear the thermal strength which is the same as that of the lower material layer which is closer to the moving bed material bearing layer part and is heated at the position closer to the moving bed material bearing layer part under the same temperature with the upper material layer to meet the process requirement. The method for heating the material layer is beneficial to improving the utilization efficiency of heat energy, reducing the heat intensity of the material bearing part of the moving bed and prolonging the service life of the material bearing part of the moving bed in the specific process that the heat-carrying tail gas passes through the bottom of the material layer and the material bearing part of the moving bed; in the specific technology of the airtight material bearing layer part of the moving bed, the heat intensity of the material bearing layer part of the moving bed cannot be increased, the heat loss of the layer can be reduced, and the heat energy utilization efficiency can be improved.

Secondly, in the method for heating the material layer provided by the invention, in the specific process that the combustion-supporting air enters the material layer from the top of the material layer to burn to form the carbonaceous fuel in the material layer to supply heat to the material layer, the lower material layer which is not heated to meet the process requirements and consists of a part of material layer completing the combustion process and a composite material layer of the material layer not completing the combustion process is used for covering a new material layer, so that the combustion-supporting air can be preheated by utilizing the residual heat in the material layer completing the combustion process like the prior art, and the new material layer can be ignited by utilizing the material layer not completing the combustion process to continue to complete the combustion process on the new material layer, therefore, after the starting process of the production line is completed, the ignition process of the material layer can be.

Thirdly, the moving bed system provided by the invention enables the surface of the part of the trolley bottom, which is directly contacted with the material layer, to move on the surface consistent with the surface of the part of the trolley bottom, which is directly contacted with the material layer, when the trolley runs to the discharging position of the discharging end of the moving bed, thus creating necessary conditions for continuously and separately discharging the upper material layer meeting the process requirements and the lower material layer which does not meet the process requirements, and including creating necessary conditions for implementing the method for heating the material layer provided by the invention. And because the position of any moving bed for receiving the lower material layer to cover the new material layer is arranged below the discharging end of the moving bed, necessary conditions are created for the lower material layer which is discharged from the discharging end of any moving bed and does not meet the process requirements to move to the position of the moving bed for receiving the lower material layer to cover the new material layer by virtue of the action of gravity, and the material distribution process for covering the new material layer by the lower material layer which does not meet the process requirements can be simplified. Under the condition that the material forming the material layer is the pellet material, the method is particularly favorable for relieving the problem of crushing in the process that the pellet material forming the lower material layer which is not heated to meet the process requirement is discharged from the lower material layer to move to the corresponding moving bed which is used for bearing the lower material layer which is not heated to meet the process requirement and covers a new material layer at the position where the lower material layer which is not heated to meet the process requirement covers the new material layer, and creates favorable conditions for implementing the method for heating the material layer.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings which are required to be used in the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts.

FIG. 1 is a schematic view showing the positional relationship of a charging end of a moving bed below a discharging end of the moving bed, in the case of a single number of moving beds, using a moving bed and a dolly type 1 dolly and moving bed;

FIG. 2-1 is a schematic view of a front view of a carriage and a moving bed using a moving bed and a carriage type 3, in which the number of the moving beds is two, showing the positional relationship of a charging end of one moving bed below a discharging end of the other moving bed;

fig. 2-2 is a schematic view of a top view of a trolley and a moving bed using a moving bed and a trolley type 3, the number of moving beds being two;

FIG. 3 is a schematic view showing the positional relationship of the charging end of one moving bed below the discharging end of the other moving bed adjacent thereto, in the case of two moving beds and trolleys and moving beds of the trolley type 1;

FIG. 4 is a schematic view showing the positional relationship of the charging end of any one moving bed below the discharging end of another moving bed adjacent thereto, in the case of using three moving beds and trolleys of the trolley type 1 and moving beds;

it should be noted that, since the position of the moving bed for receiving the lower material layer to cover the newly added material layer needs to be determined according to the specific process and the process requirement, the position for receiving the lower material layer to cover the new material layer is not indicated in the drawings. Since the position for receiving the lower material layer to cover the new material layer needs to be determined according to the specific process and the specific process conditions, the above-mentioned figures do not reflect the position relationship between the discharge end of the moving bed and the position for receiving the lower material layer to cover the new material layer. During the specific implementation, according to the specific process and the process requirements, the position where the lower material layer covers the new material layer is received in the direction consistent with the moving direction of the material layer carried at the material carrying layer position of the moving bed, and the position is specified by the specific process requirements after the position where the new material layer is added at the material feeding end of the moving bed.

FIG. 5-1 is a schematic view of a tank having upward openings at the bottom end of a preceding dolly and the bottom end of an adjacent succeeding dolly and a tank having downward openings covering the front and rear ends of the dolly from the charging position of the dolly at the charging end of the moving bed to the position at which the dolly is about to turn over at the discharging end of the moving bed;

the attached figure 5-2 is a schematic diagram of a groove with an upward opening at the bottom tail end of a front trolley body and the head end of an adjacent rear trolley body and a groove with a downward opening at the head end and the tail end of the adjacent trolley body in the process that the trolley body overturns at the discharging end of the moving bed.

Detailed Description

The core of the method for heating the material layer is that the lower material layer which is closer to the position of the material bearing layer of the moving bed and is not heated to meet the process requirement is used for covering a new material layer, so that the lower material layer which is closer to the position of the material bearing layer of the moving bed is not required to be heated to meet the process requirement at the position which is closer to the material bearing layer of the moving bed.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 5, fig. 1 is a schematic diagram of a trolley and a moving bed using a moving bed and a trolley type 1, wherein the number of the moving beds is one, and the position relationship of a feeding end of the moving bed below a discharging end of the moving bed is shown; FIG. 2-1 is a schematic front view of a carriage and a moving bed of the type 3 employing a moving bed and a carriage, showing the positional relationship of the charging end of one moving bed below the discharging end of the other moving bed, in the case where the number of moving beds is two; fig. 2-2 are schematic diagrams of a top view direction of a trolley and a moving bed using a moving bed and a trolley type 3, the number of the moving beds being two; FIG. 3 is a schematic view showing the positional relationship of the charging end of one moving bed below the discharging end of the other moving bed, in the case of two moving beds and trolleys and moving beds of the trolley type 1; FIG. 4 is a schematic view of a carriage and moving bed using a moving bed and carriage type 1, in which the number of moving beds is three, showing the positional relationship of the charging end of any one moving bed below the discharging end of another moving bed adjacent thereto; FIG. 5-1 is a schematic view of a tank having upward openings at the bottom end of a preceding dolly and the bottom end of an adjacent succeeding dolly and a tank having downward openings covering the front and rear ends of the dolly from the charging position of the dolly at the charging end of the moving bed to the position at which the dolly is about to turn over at the discharging end of the moving bed; FIG. 5-2 is a schematic view of the bottom tail end of the previous trolley and the adjacent front end of the next trolley in the process of overturning the discharge end of the moving bed, and the groove with the upward opening covered on the front end and the rear end of the adjacent trolley.

fig. 2-2 are schematic diagrams of a trolley and a moving bed using a moving bed and a trolley type 3, in a top view direction under a condition that the number of the moving beds is two;

it should be noted that, since the position of the moving bed for receiving the lower material layer to cover the newly added material layer needs to be determined according to the specific process and the process requirement, the position for receiving the lower material layer to cover the new material layer is not indicated in the drawings. Since the position for receiving the lower material layer to cover the new material layer needs to be determined according to the specific process and the specific process conditions, the above-mentioned figures do not reflect the position relationship between the discharge end of the moving bed and the position for receiving the lower material layer to cover the new material layer. During specific implementation, according to specific process and process requirements, the position where the lower material layer covers the new material layer is received along the direction consistent with the moving direction of the material layer carried at the material carrying layer position of the moving bed, and the position is appointed according to the specific process requirements after the position where the new material layer is added at the material feeding end of the moving bed.

An embodiment of a moving bed system is as follows:

the following embodiments are described in the case of the bogie with side boards on both sides. Under the condition that no breast board is arranged on the two sides of the bottom of the trolley, the trolley and the trolley form a moving bed, and the moving bed forming system refers to the implementation mode under the condition that the breast board is arranged on the bottom of the trolley. Under the condition that no breast board exists on the two sides of the bottom of the trolley, the charging position of the charging end of the moving bed is to be turned over from the discharging position of the moving bed, the lower end surfaces of the two sides of the furnace mantle are combined with the edges of the two sides of the bottom of the trolley which forms the moving bed, and sealing between the trolley and the furnace mantle is realized.

The trolley for forming the moving bed consists of components such as a trolley bottom, breast boards on two sides of the trolley bottom and the like.

Under the condition that the process requires that the material bearing layer of the moving bed is airtight, the bottom of the trolley has an actually existing upper surface and a lower surface. The upper end surfaces of the breast boards on the two sides of the bottom of the trolley can be combined with the lower end surfaces on the two sides of the furnace cover of the heating furnace, so that the sealing between the breast boards on the two sides of the bottom of the trolley and the two side surfaces of the furnace cover is realized.

Under the condition that a material layer is heated by using heat-carrying gas, and heating tail gas enters an air box below a trolley through the bottom of the material layer and the material-bearing part of a moving bed, if a grate bar distributed at the bottom of the trolley is used for supporting the material layer, the surface where the grate bar distributed at the bottom of the trolley is positioned is understood as the upper surface of the bottom of the trolley, and the surface where the contact surfaces with the upper end surfaces of two sides of the air box below the bottom of the trolley are understood as the surface where the lower surface of the bottom of the trolley is positioned. The upper end surfaces of the baffle plates on two sides of the bottom of the trolley can be combined with the lower end surfaces on two sides of the heat-carrying gas chamber, so that the trolley and the lower end surfaces on two sides of the heat-carrying gas chamber are sealed. The sealing surface of the bottom of the trolley can be combined with the upper end surfaces of two sides of the air box below the bottom of the trolley, so that the sealing between the bottom of the trolley and two side surfaces of the air box below the trolley is realized.

The heating mode of the specific process is that combustion-supporting air enters a material layer from the top of the material layer, the carbonaceous fuel in the pellet material forming the material layer is combusted, and combustion tail gas leaves the material layer from the bottom of the material layer and enters an air box below the bottom of the trolley vehicle. The upper end surfaces of the breast boards on the two sides of the bottom of the trolley can be combined with the lower end surfaces on the two sides of the furnace cover of the material layer ignition section, so that the sealing between the trolley and the furnace cover is realized. The sealing surface of the bottom of the trolley can be combined with the upper end surfaces of two sides of the air box below the bottom of the trolley, so that the sealing between the bottom of the trolley and the upper end surfaces of two sides of the air box below the bottom of the trolley is realized.

As mentioned above, the bottom of the car body has not actually existing upper and lower surfaces under all the specific process conditions, and under the condition that the grate bars distributed on the bottom of the car body are used for supporting the material layer, gaps are formed between the grate bars on the bottom of the car body, so that the grate bars distributed on the bottom of the car body are not one surface, and the lower surface of the bottom of the car body is not actually existing. In view of these specific circumstances, for convenience of description, the surface on which the upper surface of the vehicle bottom of the bogie is uniformly expressed as the surface on which the vehicle bottom of the bogie directly contacts the material layer portion, and the surface below the surface on which the vehicle bottom of the bogie directly contacts the material layer portion is referred to as the surface on which the lower surface of the vehicle bottom of the bogie is located, or the surface on which the sealing surface between the vehicle bottom of the bogie and the bellows below the vehicle bottom of the bogie is located. The surface under the surface where the part directly contacting the material layer at the bottom of the trolley is positioned can be understood as a section of virtual surface, and the section of virtual surface can be understood as follows: the lower surface of the bottom of the trolley body which actually exists is supposed to move upwards in parallel to a surface which is coincident with or close to the head end and the tail end of the surface of the bottom of the trolley body which is in direct contact with the material layer, or the upper surface of the sealing surface of the bottom of the trolley body and the bellows below the bottom of the trolley body which is in upward parallel to a surface which is coincident with or close to the head end and the tail end of the surface of the bottom of the trolley body which is in direct contact with the material layer.

The angle of the included angle formed by the head end and the tail end of the surface of the trolley bottom directly contacting the material layer part is determined by the angle of the included angle formed by the head end and the tail end of the surface of the trolley bottom below the surface of the trolley bottom directly contacting the material layer part. That is, the angle is determined by the angle formed between the head end and the tail end of the plane of the lower surface of the trolley chassis or the sealing plane between the trolley chassis and the bellows below the trolley chassis. That is, the angle of the included angle formed between the head end and the tail end of the surface where the lower surface of the trolley chassis is located is the same as the angle of the included angle formed between the head end and the tail end of the surface where the material layer part of the trolley chassis is directly contacted, or the angle of the included angle formed between the head end and the tail end of the surface where the sealing surface between the trolley chassis and the bellows below the trolley chassis is the same as the angle of the included angle formed between the head end and the tail end of the surface where the material layer part of the trolley chassis is directly contacted.

The angle of the included angle between the head end and the tail end of the surface of the trolley bottom directly contacting the material layer part is determined by the inclination angle of the surface of the trolley bottom directly contacting the material layer part and the axis of the surface. The larger the inclination angle between the surface of the part of the trolley chassis, which is directly contacted with the material layer, and the axis of the surface is, the larger the angle of an included angle formed between the head end and the tail end of the part of the trolley chassis, which is directly contacted with the material layer, is.

Under the condition that the surface at which the material layer part is directly contacted with the bottom of the trolley car is a section of inclined spiral surface, the surface at which the material layer part is directly contacted with the bottom of the trolley car can be understood as follows: the straight generatrix and the axis are inclined at a certain angle, the straight generatrix and the axis do not intersect, the straight generatrix rotates around the axis at the equal angular speed and moves at the same speed along the axis direction, and when the straight generatrix rotates around the axis by 180 degrees, a section of inclined helical surface is obtained. The inclined helicoid is equally divided into n sections in the direction around the axis, the head and tail ends of each section are cut off to ensure that the trolley overturns at the discharge end of the moving bed, so that the part left behind the part which cannot be connected between the tail end of the surface where the bottom of the previous trolley directly contacts the material layer and the head end of the surface where the bottom of the next trolley directly contacts the material layer is the inclined helicoid where the bottom of the trolley directly contacts the material layer.

Under the condition that the surface of the material layer directly contacted with the bottom of the trolley is a section of conical surface, the surface of the material layer directly contacted with the bottom of the trolley is understood as follows: the straight generatrix of one section inclines a certain angle with the axis, the straight generatrix and the axis do not intersect, the straight generatrix rotates 180 degrees around the axis to obtain a section of conical surface, the section of conical surface is equally divided into n sections around the axis direction, the head and tail ends of each section cut off the part left behind the part that the tail end of the surface where the bottom of the previous trolley vehicle directly contacts the material layer part and the head end of the surface where the bottom of the next trolley vehicle directly contacts the material layer part can not be connected, namely the conical surface where the bottom of the trolley vehicle directly contacts the material layer part, which is caused by the fact that the trolleys turn over at the discharge end of the moving bed.

Under the condition that the surface of the material layer position directly contacted with the bottom of the trolley vehicle is a section of cylindrical surface, the surface of the material layer position directly contacted with the bottom of the trolley vehicle is understood as follows: and a section of straight bus is parallel to the axis of the straight bus, and the straight bus rotates 180 degrees around the axis to obtain a section of cylindrical surface. The cylindrical surface is equally divided into n sections in the direction around the axis, the head end and the tail end of each section cut off the discharge end of the trolley moving bed to turn over, so that the part left behind the part which is not connected between the tail end of the surface where the bottom of the previous trolley is directly contacted with the material layer and the head end of the surface where the bottom of the next trolley is directly contacted with the material layer is the cylindrical surface where the bottom of the trolley is directly contacted with the material layer.

The surface equally divided into n sections around the axis direction determines the turning angle of each section from the head end to the tail end around the axis of the section, and determines the turning position of the trolley from the turning position of the trolley starting to the turning position of the trolley finishing 180 degrees at the discharging end of the moving bed.

For example, assuming the aforementioned curved surface equally divided into n sections in the direction of the axis, each section being rotated 15 degrees from the head end to the tail end around its axis, 12 dollies may be simultaneously inverted at the discharge end of the moving bed from the position where the dollies start to be inverted to the position where the dollies complete 180 degrees of inversion.

For example, assuming the aforementioned plane equally divided into n sections in the direction of the axis, each section being rotated 12 degrees from the head end to the tail end about its axis, 15 dollies may be simultaneously inverted at the discharge end of the moving bed from the position where the inversion of the dollies starts to the position where the inversion of the dollies is completed by 180 degrees.

According to the number of the trolleys between the tail end of the trolley bottom at the feeding position of the moving bed feeding end and the head end of the trolley at the position where the trolley is to turn over at the moving bed discharging end, the angle between the head end of the surface where the trolley bottom direct contact material layer part of the moving bed is located and the tail end is determined. Except the condition that a section of rectangular plane is arranged below the surface of the trolley bottom which is directly contacted with the material layer.

For example, under the condition that the surface where the material layer part is directly contacted with the bottom of the trolley is a section of inclined spiral surface and the number of moving beds forming the moving bed system is one, assuming that a straight generatrix forming the surface below the surface where the material layer part is directly contacted with the bottom of the trolley is along the surface below the surface where the material layer part is directly contacted with the bottom of the trolley around the axis of the straight generatrix, the angle of rotation of the head end of the bottom of the trolley from the tail end of the bottom of the trolley at the feeding position of the moving bed feeding end to the position where the trolley at the discharging end of the moving bed is about to turn over is 340 degrees (angle system), and under the condition that the number of the trolleys between the tail end of the trolley at the feeding position of the moving bed and the head end of the trolley at the position where the trolley is about to turn over at the discharging end of the moving bed is 80, the included angle between the head end and the tail end of the surface where the bottom of the trolley directly contacts the material layer is 4.25 degrees. For example, under the condition that the surface where the material layer part is directly contacted with the bottom of the trolley is a section of conical surface and the number of moving beds forming the moving bed system is two, assuming that a straight generatrix forming the surface below the surface where the material layer part is directly contacted with the bottom of the trolley is along the surface below the surface where the material layer part is directly contacted with the bottom of the trolley around the axis of the straight generatrix, the angle of rotation of the head end of the bottom of the trolley from the tail end of the bottom of the trolley at the feeding position of the moving bed feeding end to the position where the trolley at the discharging end of the moving bed is about to turn over is 190 degrees, and under the condition that the number of the trolleys between the tail end of the trolley at the feeding end of the moving bed and the head end of the trolley at the position where the trolley is about to turn over at the discharging end of the moving bed is 38, the included angle between the head end and the tail end of the surface where the bottom of the trolley directly contacts the material layer is 5 degrees. Under the condition that the surface below the surface where the trolley bottom direct contact material layer part is located is a section of helicoid, an included angle is formed between the tail end of the trolley bottom from the feeding position of the moving bed feeding end to the head end of the trolley at the position where the trolley at the moving bed discharging end is about to turn over, and the included angle is formed by rotating a straight generatrix of the helicoid below the surface where the trolley bottom direct contact material layer part is located from the tail end of the trolley at the feeding position of the moving bed feeding end to the head end of the trolley at the position where the trolley at the moving bed discharging end is about to turn over at the equal angular speed along the surface where the helicoid is located around the axis.

The length of a running path from a charging position of the trolley at the charging end of the moving bed to a position where the trolley is to be turned at the discharging end of the moving bed required by a specific process, the distance between the head end and the tail end of each trolley and other factors are required to be combined to determine the number of the trolleys used by one moving bed from the charging position of the charging end of the moving bed to the position where the trolley is to be turned at the discharging end of the moving bed.

Moving bed and trolley type 1:

a trolley:

the surface of the bottom of the trolley, which is directly contacted with the material layer, is a section of inclined spiral surface.

The bottom of the trolley directly contacts the inclined spiral surface of the material layer, and either the inclined spiral surface or the positive spiral surface is arranged above the other section of the positive spiral surface or the inclined spiral surface is arranged above the other section of the positive spiral surface.

The axial line of the oblique helicoid of the material layer directly contacted with the bottom of the trolley is vertical to and intersected with the axial line of the normal helicoid or the oblique helicoid under the oblique helicoid of the material layer directly contacted with the bottom of the trolley.

The head end and the tail end of the oblique helicoid where the material layer part is located are directly contacted with the bottom of the trolley, and are arranged on the head end face and the tail end face of the bottom of the trolley or are close to the head end and the tail end face of the bottom of the trolley.

The head end and the tail end of another section of the positive helicoid or the oblique helix below the oblique helicoid at which the material layer is directly contacted with the bottom of the trolley are arranged on the head end face and the tail end face of the bottom of the trolley.

The included angle between the head end and the tail end of the inclined helicoid where the material layer is directly contacted with the bottom of the trolley is consistent with the included angle between the head end and the tail end of the positive helicoid or the inclined helicoid below the inclined helicoid where the material layer is directly contacted with the bottom of the trolley. For example, all 4 degrees, or all 5 degrees.

The inner side surfaces of the breast boards at the two sides of the bottom of the trolley are respectively a section of inclined spiral surface.

The axis of the inclined helicoid where the inner side surfaces of the breast boards on the two sides of the trolley chassis are positioned and the axis of the other section of the positive helicoid or the inclined helicoid below the inclined helicoid where the trolley chassis is directly contacted with the material layer are the same straight line.

The included angle between the inner side surfaces of the breast boards at the two sides of the bottom of the trolley and the positive spiral surface or the inclined spiral surface below the inclined spiral surface where the material layer is directly contacted with the bottom of the trolley is not less than 90 degrees.

Preferably, the end surface of the head end of the bottom of the trolley and the end surfaces of the head ends of the breast boards on two sides of the bottom of the trolley are on the same plane.

Preferably, the end surface of the tail end of the bottom of the trolley body and the end surfaces of the tail ends of the breast boards on two sides of the bottom of the trolley body are on the same plane.

The trolley forms a moving bed:

The trolley which forms the same moving bed has a section of inclined spiral surface on the surface of the bottom of the trolley which is directly contacted with the material layer. The trolley forming the same moving bed has one section of regular spiral surface or one section of inclined spiral surface below the inclined spiral surface where the bottom of the trolley directly contacts the material layer. Namely: on the same moving bed, the trolley with one section of positive helicoid on the surface below the inclined helicoid where the trolley bottom is directly contacted with the material layer is not allowed, and the trolley with one section of inclined helicoid on the surface below the surface where the trolley bottom is directly contacted with the material layer is also allowed.

The geometrical parameters of the corresponding parts of the trolleys forming the same moving bed are consistent, for example, the geometrical parameters of the inclined helicoids of the parts of the trolleys where the bottoms of the trolleys directly contact the material layer are consistent, the geometrical parameters of the regular helicoids or the inclined helicoids below the inclined helicoids of the parts of the trolleys where the bottoms of the trolleys directly contact the material layer are consistent, and the geometrical parameters of the breast boards on the same side in the breast boards on the two sides of the trolleys are consistent.

The trolley moves to the discharge end of the moving bed to turn over.

From the platform truck at the reinforced position of removal bed charge end to the platform truck at the position that removes the unloading end platform truck of bed and be about to take place the upset, at the just helicoid or the skew helicoid of the skew helicoid below that the platform truck vehicle bottom direct contact bed of material position belonged to, move on the just helicoid or the skew helicoid that the skew helicoid below the skew helicoid or the skew helicoid is unanimous with platform truck vehicle bottom direct contact bed of material position belonged to. Namely: from the platform truck in the reinforced position of removal bed charge end to the platform truck in the position that removes the unloading end platform truck of bed and be about to take place the upset, at the just helicoid or the helical surface that inclines below the helical surface that the bed of material position of direct contact belongs to of platform truck vehicle bottom, constitute one section just helicoid, or constitute one section helical surface that inclines.

At the discharge end of the moving bed, when the trolley is turned to the discharge position, the bottom of the trolley directly contacts the inclined helicoid where the material layer is positioned, and moves on the inclined helicoid which is consistent with the inclined helicoid where the bottom of the trolley directly contacts the material layer.

At the discharge end of the moving bed, the trolley starts to turn over until the trolley finishes 180-bottom turning over, and preferably not less than 8 trolleys turn over at the same time.

The number of the preferable trolleys is not less than three times of the trolleys which turn over at the discharge end of the moving bed.

From the platform truck in the position of moving bed charge end feeding to the platform truck in the position of moving bed discharge end platform truck and about to take place the upset, the breast board medial surface of homonymy constitutes one section inclined helicoid in the breast board of platform truck vehicle bottom both sides.

Moving bed and trolley type 2:

a trolley:

the surface of the bottom of the trolley, which is directly contacted with the material layer, is a section of conical surface.

The bottom of the trolley directly contacts the conical surface where the material layer is positioned, and either the conical surface is arranged above the other section of conical surface or the sector of the section of conical surface.

The axis of the conical surface of the part of the trolley chassis, which is directly contacted with the material layer, is vertical to and intersected with the axis of the other section of conical surface or sector below the conical surface of the part of the trolley chassis, which is directly contacted with the material layer.

The head end and the tail end of the conical surface where the material layer part is directly contacted with the bottom of the trolley are arranged on the head end face and the tail end face of the bottom of the trolley or are close to the head end face and the tail end face of the bottom of the trolley. The bottom of the trolley body is directly contacted with the head end and the tail end of the other section of conical surface or sector below the conical surface where the material layer is positioned, and the head end and the tail end of the trolley body are arranged on the head end face and the tail end face.

The included angle between the head end and the tail end of the conical surface where the trolley bottom is in direct contact with the material layer is consistent with the included angle between the head end and the tail end of the other section of conical surface or sector below the conical surface where the trolley bottom is in direct contact with the material layer. For example, both are 4 degrees.

The inner side surfaces of the breast boards at the two sides of the bottom of the trolley are respectively a section of conical surface.

The axis of the conical surface where the inner side surfaces of the breast boards on the two sides of the bottom of the trolley are located and the axis of the other section of conical surface or sector below the conical surface where the bottom of the trolley is directly contacted with the material layer are the same straight line.

The included angle between the inner side surface of the breast board at the two sides of the bottom of the trolley body and the other section of conical surface or sector below the conical surface at the position where the bottom of the trolley body is directly contacted with the material layer is not less than 90 degrees.

The trolley forms a moving bed:

The trolley which forms the same moving bed has a conical surface on the surface of the bottom of the trolley which is directly contacted with the material layer. The bottom of the trolley is directly contacted with the conical surface where the material layer is positioned, and the trolley is arranged above the conical surface of the other section or above a section of sector, and one of the conical surface and the sector is selected. Namely: on the same moving bed, the trolley with the trolley bottom directly contacting the conical surface of the material layer is not allowed to be a trolley with another section of cone, and the trolley bottom directly contacting the surface of the material layer is not allowed to be a trolley with a sector.

The geometrical parameters of the corresponding parts of the trolleys forming the same moving bed are consistent, for example, the geometrical parameters of the conical surface of the part, where the bottom of each trolley is directly contacted with the material layer, of the conical surface at the other section below the conical surface, where the bottom of each trolley is directly contacted with the material layer, of the conical surface or the sector are consistent, and the geometrical parameters of the baffle plates at the same side in the baffle plates at the two sides of the bottom of each trolley are consistent.

The trolley moves to the discharge end of the moving bed to turn over.

From the charging position of the trolley at the charging end of the moving bed to the position of the trolley about to turn over at the discharging end of the moving bed, the trolley bottom directly contacts the other section of conical surface or sector below the conical surface where the material layer is positioned, moves on the conical surface consistent with the other section of conical surface below the conical surface where the material layer is positioned, or moves on the sector consistent with the sector below the conical surface where the material layer is positioned. Namely: from the charging position of the trolley at the charging end of the moving bed to the position of the trolley about to turn over at the discharging end of the moving bed, the other section of conical surface or sector below the conical surface where the material layer part is located is directly contacted at the bottom of the trolley to form a section of conical surface or a section of sector.

At the discharge end of the moving bed, when the trolley is turned to the discharge position, the bottom of the trolley directly contacts the conical surface where the material layer is positioned, and moves on the conical surface consistent with the conical surface where the bottom of the trolley directly contacts the material layer.

From the platform truck in the position of moving bed charge end feeding to the platform truck in the position of moving bed discharge end platform truck about to take place the upset, the breast board medial surface of homonymy constitutes one section circular conical surface in the breast board of platform truck bottom both sides.

Moving bed and trolley type 3:

a trolley:

the surface of the bottom of the trolley, which is directly contacted with the material layer, is a section of cylindrical surface.

The bottom of the trolley directly contacts the cylindrical surface of the material layer and is arranged above the rectangular plane.

The head end and the tail end of the cylindrical surface where the material layer part is located are directly contacted with the bottom of the trolley, and are arranged on the head end face and the tail end face of the bottom of the trolley or are close to the head end face and the tail end face of the bottom of the trolley.

The bottom of the trolley body directly contacts with the head end and the tail end of a rectangular plane below the cylindrical surface where the material layer is located, and is arranged on the head end face and the tail end face of the bottom of the trolley body.

The included angle between the head end and the tail end of the cylindrical surface where the trolley bottom is in direct contact with the material layer is consistent with the included angle between the head end and the tail end of the rectangular plane below the cylindrical surface where the trolley bottom is in direct contact with the material layer. Are all 0 degrees.

The inner side surfaces of the breast boards on two sides of the bottom of the trolley are respectively a section of rectangular plane.

The included angle between the inner side surfaces of the breast boards on the two sides of the bottom of the trolley and the rectangular plane below the cylindrical surface where the part of the bottom of the trolley directly contacts the material layer is not less than 90 degrees.

The trolley forms a moving bed:

The surface of the trolley bottom of the same moving bed, which is directly contacted with the material layer, is a section of cylindrical surface, and the surface of the trolley bottom of the same moving bed, which is directly contacted with the material layer, is a section of rectangular plane.

The geometrical parameters of the corresponding parts of the trolleys forming the same moving bed are consistent, for example, the geometrical parameters of the cylindrical surface of the part of each trolley bottom, which is directly contacted with the material layer, are consistent, the geometrical parameters of the rectangular plane below the cylindrical surface of the part of each trolley bottom, which is directly contacted with the material layer, are consistent, and the geometrical parameters of the breast boards on the same side in the breast boards on the two sides of each trolley bottom are consistent.

The trolley moves to the discharge end of the moving bed to turn over.

From the platform truck in the reinforced position of removal bed charge end to the platform truck in the position that the platform truck is about to take place the upset of removal bed discharge end, at the rectangle plane of the face of cylinder below that the platform truck vehicle bottom direct contact bed of material position place, move on the rectangle plane unanimous with the rectangle plane of the face of cylinder below that the platform truck vehicle bottom direct contact bed of material position place. Namely: from the platform truck at the reinforced position of removal bed charge end to the platform truck at the position that removes the unloading end platform truck of bed is about to take place the upset, at the rectangle plane of the face of cylinder below that the bed of material position place is directly contacted at the platform truck vehicle bottom, constitute one section rectangle plane.

At the discharge end of the moving bed, when the trolley is turned to the discharge position, the bottom of the trolley directly contacts the conical surface where the material layer is positioned, and moves on the cylindrical surface which is consistent with the cylindrical surface where the bottom of the trolley directly contacts the material layer.

From the platform truck in the position of moving bed charge end feeding to the platform truck in the position of moving bed discharge end platform truck and about to take place the upset, the breast board medial surface of homonymy constitutes one section rectangle plane in the breast board of platform truck vehicle bottom both sides.

The moving bed and the trolley are recommended to be respectively provided with a groove with an upward opening at two sides of a connecting part of the tail end face of the front trolley bottom and the head end face of the adjacent rear trolley bottom, and another groove with a downward opening covers the connecting part of the tail end face of the front trolley bottom and the head end face of the adjacent rear trolley bottom, and shields a gap formed by the groove with the upward opening between the tail end of the direct contact material layer part of the front trolley bottom and the head end of the direct contact material layer part of the adjacent rear trolley bottom. The downward groove of this opening does not do fixed connection with the breast board of platform truck vehicle bottom and platform truck vehicle bottom both sides, uses the outside part that extends to both sides in this groove opening position and fixes the baffle cooperation on the ascending groove of opening, the restriction ascending groove's of opening home range. In the process that the discharge end of the moving bed is overturned, the groove with the downward opening can also play a role in connecting the bottoms of the adjacent trolleys. See figures 5-1 and 5-2.

The moving bed and the trolley type recommend that an auxiliary railing panel (with flexibility) is arranged between the outer side of the railing panel tail part of two sides of the front trolley bottom and the outer side of the railing panel head part of two sides of the adjacent rear trolley bottom, one end of the auxiliary railing panel is fixed on the outer side of the railing panel tail part of two sides of the front trolley bottom, and the rest of the auxiliary railing panel is moved in a gap fixed on the outer side of the railing panel head part of two sides of the rear trolley bottom. When the trolley moves to the position where the discharge end of the moving bed is overturned, the auxiliary baffle plate blocks a V-shaped notch which is formed between the tail end of the baffle plate at the same side of the previous trolley and the head end of the baffle plate at the same side of the next adjacent trolley.

Under the condition that a moving bed is formed by trolleys with airtight trolleys at the bottoms of the trolleys, the sealing element at the tail end face of the bottom of the front trolley is combined with the sealing element at the head end face of the bottom of the adjacent rear trolley to realize the sealing between the bottom of the front trolley and the bottom of the adjacent rear trolley; the sealing element of the tail end face of the breast board on two sides of the front trolley bottom is combined with the sealing element of the head end face of the breast board on two sides of the adjacent rear trolley bottom, so that sealing between the breast boards on two sides of the front trolley bottom and the breast boards on two sides of the adjacent rear trolley bottom is realized. The end surfaces of the upper ends of the breast boards on the two sides of the bottom of the trolley can be combined with the end surfaces of the lower ends of the two sides of the furnace cover, so that the sealing between the trolley and the lower end surfaces of the two sides of the furnace cover is realized.

Under the condition that a moving bed is formed by trolleys with the trolley bottoms having the ventilation function, the sealing elements of the tail end surfaces of the breast boards on two sides of the front trolley bottom are combined with the sealing elements of the tail end surfaces of the breast boards on two sides of the adjacent rear trolley, so that the sealing between the breast boards on two sides of the front trolley bottom and the breast boards on two sides of the adjacent rear trolley bottom is realized. The end surfaces of the upper ends of the breast boards on the two sides of the bottom of the trolley can be combined with the end surfaces of the lower ends of the two sides of the furnace cover, so that the sealing between the trolley and the lower end surfaces of the two sides of the furnace cover is realized. The sealing surfaces at two sides of the bottom of the trolley are combined with the upper end surfaces at two sides of the air box below the bottom of the trolley, so that the sealing between the trolley and two sides of the air box below the trolley is realized.

The moving bed comprises a moving bed system:

embodiment 1: the number of the moving beds forming the moving bed system is one

The moving bed receives the position of the lower material layer covering the new material layer, and is arranged below the discharging end of the moving bed.

Moving beds and trolley type 1 moving beds were used.

Embodiment 2: the number of the moving beds forming the moving bed system is two

Any one of the moving beds receives a position where a lower material layer discharged from the moving bed covers a new material layer, and is below a discharge end of the other moving bed.

Under the condition that the geometry of the corresponding part of the trolley forming any one of the moving beds is consistent with the geometry of the corresponding part of the trolley forming the other moving bed:

embodiment mode 2-1: moving beds and trolley type 1 moving beds were used.

Embodiment mode 2 to 2: moving beds and trolley type 2 moving beds were used.

Embodiment modes 2 to 3: moving beds and trolley type 3 moving beds were used.

Under the condition that the geometry of the corresponding part of the trolley composing one moving bed is not consistent with the geometry of the corresponding part of the trolley composing the other moving bed:

embodiment modes 2 to 4: one moving bed employs a moving bed of moving bed and trolley type 1, and the other moving bed employs a moving bed of moving bed and trolley type 2.

Embodiment modes 2 to 5: a moving bed and a trolley type 2 moving bed are adopted, wherein the trolley forming one moving bed is a section of conical surface below the surface of the material layer directly contacted with the bottom of the trolley, and the trolley forming the other moving bed is a section of sector below the surface of the material layer directly contacted with the bottom of the trolley.

Embodiment 3: the number of the moving beds forming the moving bed system is three

Any one of the moving beds receives the position where the lower material layer covers the new material layer and is arranged below the discharging end of the other moving bed adjacent to the moving bed.

Under the condition that the geometrical shape of the corresponding part of the trolley forming any one of the moving beds is consistent with the geometrical shape of the corresponding part of the trolley forming another adjacent moving bed:

embodiment mode 3-1: moving beds and trolley type 1 moving beds were used.

Embodiment mode 3 to 2: moving beds and trolley type 2 moving beds were used.

Under the condition that the geometry of the corresponding part of the trolley forming any one of the moving beds is not consistent with the geometry of the corresponding part of the trolley forming another adjacent moving bed:

embodiment modes 3 to 3: moving beds and trolley type 2 moving beds were used. Wherein, the surface below the surface of the trolley which forms one moving bed and the part of which the bottom is directly contacted with the material layer is a section of conical surface; the trolley which forms the other two moving beds has a sector below the surface of the part of the trolley bottom which is directly contacted with the material layer.

Embodiment modes 3 to 4: moving beds and trolley type 2 moving beds were used. Wherein, the surface under the surface of the trolley which forms one moving bed and the part of which the bottom is directly contacted with the material layer is a sector; the trolley which forms the other two moving beds has a conical surface below the surface of the bottom part which is directly contacted with the material layer.

Embodiment 4: the number of moving beds constituting the moving bed system is four.

Embodiment 4-1: moving beds and trolley type 1 moving beds were used.

Embodiment 4-2: moving beds and trolley type 2 moving beds were used.

In the embodiment 1, the embodiment 2, the embodiment 3 and the embodiment 4, from the charging position of the trolley at the charging end of the moving bed to the position of the trolley about to turn over at the discharging end of the moving bed, the inclination angle between the plane of the trolley bottom directly contacting the material layer and the horizontal plane needs to be smaller than the inclination angle of the relative movement between the materials forming the material layer and borne by the trolley. The inclination angle of the surface where the trolley bottom is in direct contact with the material layer in the moving direction and the horizontal direction of the material layer is smaller than the inclination angle of relative motion between materials forming the material layer and borne by the trolley bottom, and the inclination angle of a straight generatrix and the horizontal plane of the surface where the trolley bottom is in direct contact with the material layer is smaller than the inclination angle of relative motion between the materials forming the material layer and borne by the trolley bottom. The determination of the inclination angle needs to be based on the actual measurement of the inclination angle of the relative movement between the specific materials forming the material layer adopted by the specific process. For example, the inclination angle is 5 degrees or 4 degrees, which must be based on the simulation of actual measurement.

At the discharge end of the moving bed, from the position where the trolley starts to turn over at the discharge end of the moving bed to the discharge position, the inclination angle between the plane where the trolley bottom is directly contacted with the material layer and the horizontal plane is smaller than the inclination angle of relative motion between materials forming the material layer and borne by the trolley. The inclination angle of the surface where the trolley bottom is in direct contact with the material layer part in the material layer moving direction and the horizontal plane is smaller than the inclination angle of relative motion between materials forming the material layer and borne by the trolley bottom, and the inclination angle of a straight generatrix of the surface where the trolley bottom is in direct contact with the material layer part and the horizontal plane is smaller than the inclination angle of relative motion between the materials forming the material layer and borne by the trolley bottom. The determination of the inclination angle needs to be based on the simulation and actual measurement of the inclination angle of the relative motion between the specific materials forming the material layer adopted by the specific process. For example, the inclination angle is 5 degrees or 4 degrees, which must be based on the actual measurement.

When the inclination angle is determined, the factor needing attention is that a material blocking device for blocking the relative movement of the materials forming the material layer on the trolley is arranged at the feeding position of the feeding end of the moving bed; at the discharging position of the discharging end of the moving bed, the lower material layer which does not meet the process requirements is supported by the lower material layer which is discharged, but can freely slide after being discharged. Reference is made here to the contents of an embodiment of a method for heating material layers in relation to how the lower material layer, which is not heated to process requirements, is discharged and moved to a position covering a new material layer.

In the embodiments 2, 3 and 4, the number of moving beds constituting the moving bed system is not less than two:

the distance between the edges of the two sides of the surface where the bottom of the trolley directly contacts the material layer on different moving beds is consistent.

The moving speed of the trolley on each moving bed is consistent.

Preferably, the trolleys on each moving bed move from the position for receiving the lower material layer to cover the new material layer to the position for turning over the trolley at the discharging end of the moving bed in the near future in the same time.

Preferably, the length of the path of movement of the trolleys on each moving bed from the position for receiving the lower material layer covering the new material layer to the position at which the trolley is about to occur at the discharge end of the moving bed is the same.

Preferably, the trolleys on each moving bed are moved in time from the loading end loading position to the position where the trolley on the discharge end of the moving bed is about to turn over.

Preferably, the length of the path of movement of the trolleys on each moving bed from the loading end loading position to the position where the trolley is about to turn over at the discharge end of the moving bed is uniform.

An embodiment of a method of heating a material bed is as follows:

the invention provides a production line starting process implementation mode which is suitable for the production line starting process under the condition of adopting a moving bed system provided by the invention. Namely: the method is suitable for implementing the production line starting process of the technical scheme 1, or suitable for implementing the production line starting process of the technical scheme 2, or suitable for implementing the production line starting process of the technical scheme 3. The key points are as follows:

and when the production line is started, adding a new material layer at the position where the new material layer is added in the moving bed, wherein the thickness of the added new material layer is consistent with the thickness of the lower material layer which covers the new material layer and is not heated to meet the process requirement.

And moving the lower material layer which is not heated to meet the process requirement to a corresponding moving bed which receives the lower material layer which is not heated to meet the process requirement, wherein the discharging end of the chute or the chute which receives the lower material layer which is not heated to meet the process requirement is in a closed state, and the material moved through the chute or the chute is prevented from covering the newly added material layer.

When the material layer in the chute or the chute extends upwards to be connected with the lower material layer discharged by the corresponding moving bed for discharging the lower material layer, the discharging end of the chute or the chute is opened, and the material layer moved by the chute or the chute is used for covering a new material layer.

The thickness of the new layer, which is covered by the lower layer, is adjusted to the thickness of the new layer, which is predetermined after the start-up process of the production line has been completed.

When the lower material layer covering the new material layer runs to the discharge end of the moving bed, the heating system is started.

And respectively discharging the upper material layer and the lower material layer when the material layer runs to the discharging position of the discharging end of the moving bed.

And discharging the boundary between the upper material layer and the lower material layer, wherein the boundary between the upper material layer heated to meet the process requirement and the lower material layer not heated to meet the process requirement is discharged after the starting process of the production line is finished.

And moving the discharged lower material layer to a corresponding position of a moving bed which receives the lower material layer which is not heated to meet the process requirement and receives the lower material layer which is not heated to meet the process requirement, and covering a new material layer.

Before the starting process of the production line is finished, the thickness of the discharged upper material layer is not required to be consistent, the thickness of the discharged lower material layer is consistent, and the thickness of the discharged lower material layer is consistent with the thickness of the discharged lower material layer which is not heated to meet the process requirement after the starting process of the production line is finished.

And when the upper material layer with the thickness consistent with that of the upper material layer heated to meet the process requirement is heated to meet the process requirement, the upper material layer becomes the upper material layer heated to meet the process requirement, the lower material layer becomes the lower material layer which is not heated to meet the process requirement, the starting process of the production line is finished, and the normal production process is switched to.

When the production line is started under the condition that combustion-supporting air enters the bed from the top of the bed to burn carbonaceous fuel in the pellets forming the bed, and combustion tail gas leaves the bed from the bottom of the bed and passes through the position of the moving bed bearing bed to enter the bellows below the position of the moving bed bearing bed, if the drying bursting temperature of the pellets is lower than the flame temperature for igniting the upper surface bed, the upper bed is dried at least until the pellets are not burst due to the use of the external flame to ignite the upper surface bed. Before the lower material layer covering the new material layer can automatically continue the material layer combustion process, the upper surface material layer in the lower material layer covering the new material layer needs to be ignited by external flame continuously until the lower material layer covering the new material layer can be utilized to automatically continue the material layer combustion process.

When the production line is started under the condition that heat-carrying gas enters the material layer from the top of the material layer and heating tail gas leaves the material layer from the bottom of the material layer, if the drying bursting temperature of the pellet material forming a new material layer is lower than the temperature of the heat-carrying gas entering the material layer, at least the upper material layer in the material layer is dried until bursting does not occur and then is used for the starting process of the production line.

The production line starting process implementation mode is recommended and is suitable for the production line starting process under the condition that the moving bed system provided by the invention is not adopted. Namely: the production line starting points suitable for the 4 th technical scheme are as follows:

when the production line is started, the thickness of the new material layer corresponds to the thickness of the material layer required by heating the added material layer into the upper material layer heated to meet the process requirement and the lower material layer which is not heated to meet the process requirement.

The moving speed of the material bearing layer part of the moving bed is less than that under the normal production condition.

And heating the added material layers into the upper material layer heated to meet the process requirement and the lower material layer which is not heated to meet the process requirement.

The thickness of the new material layer covered by the lower material layer which is not heated to meet the process requirements is adjusted to the thickness of the new material layer after the start-up process of the production line is completed.

The moving speed of the material bearing layer part of the moving bed is adjusted to the moving speed under the normal production condition.

It is recommended to use a chute or chute to receive the lower material layer discharged when moving to the position where the lower material layer is discharged at the discharge end of the moving bed and to move it to the corresponding moving bed to receive the lower material layer not heated to meet the process requirements and to cover the new material layer at the position where the lower material layer not heated to meet the process requirements is received by the moving bed.

When the lower material layer which is not heated to meet the process requirement is covered with a new material layer according to the specific process requirement, under the condition that the lower material layer in the lower material layer which is not heated to meet the process requirement covers the new material layer before the upper material layer in the lower material layer which is not heated to meet the process requirement, or under the condition that the specific process requirement is in the direction opposite to the moving direction of the covered new material layer, the upper material layer in the lower material layer which is not heated to meet the process requirement covers the new material layer before the lower material layer in the lower material layer which is not heated to meet the process requirement, the inclination angle between the bottom of the chute or the chute and the horizontal plane is smaller than the inclination angle of the relative movement between the materials forming the material layers. And in the process that the lower material layer which is not heated to meet the process requirement is discharged from the discharging position of the moving bed to the position where the corresponding moving bed which receives the lower material layer which is not heated to meet the process requirement, the upper end of the lower material layer which is not heated to meet the process requirement is connected with the discharging position, the lower end of the lower material layer which is not heated to meet the process requirement is connected with the covered new material layer, and the material layers are uninterrupted.

When the lower material layer which is not heated to meet the process requirement covers the new material layer, the lower material layer in the chute or the chute reaches the position covering the new material layer before the upper material layer in the direction consistent with the moving direction of the newly added material layer, so that the lower material layer in the lower material layer which is not heated to meet the process requirement covers the new material layer before the upper material layer.

Or when the lower material layer which is not heated to meet the process requirement covers the new material layer, the upper material layer in the chute or the chute reaches the position covering the newly added material layer before the lower material layer in the direction opposite to the moving direction of the new material layer, so that the upper material layer in the lower material layer which is not heated to meet the process requirement covers the new material layer before the lower material layer.

Under the condition of adopting the moving bed system provided by the invention, the following implementation mode main points are also applicable to the implementation of part or all of the technical schemes of the invention:

the material layer is from the position of forming the material layer on the moving bed to the position of moving to the trolley at the discharging end of the moving bed to be overturned, and the material forming the material layer does not move relatively. Namely: the material layer is required to move from the position where the material layer is formed on the moving bed to the position where the trolley at the discharging end of the moving bed is about to turn over, and the inclination angle between the material layer and the horizontal direction is smaller than the inclination angle of relative movement between the materials forming the material layer.

The material layer moves from the position where the trolley starts to turn over at the discharging end of the moving bed to the position where the material layer is discharged, and the relative motion does not occur between the materials forming the material layer. Namely: the material layer is required to move from a position where the material layer is about to turn over to a position where the material layer is discharged from a trolley at the discharging end of the moving bed, and the inclination angle between the material layer and the horizontal direction is smaller than the inclination angle of relative movement between the materials forming the material layer.

When the trolley moves to the position where the trolley at the discharging end of the moving bed is about to turn over, the upper material layer on the trolley meets the process requirements, the heating process of the upper material layer is finished, and the trolley starts to turn over. When the trolley is turned to the unloading position, the surface where the material layer is directly loaded at the bottom of the trolley moves on the inclined spiral surface consistent with the inclined spiral surface where the material layer is directly contacted at the bottom of the trolley, or the conical surface where the material layer is directly contacted at the bottom of the trolley moves on the conical surface consistent with the conical surface where the material layer is directly contacted at the bottom of the trolley, or the cylindrical surface where the material layer is directly contacted at the bottom of the trolley moves on the cylindrical surface consistent with the cylindrical surface where the material layer is directly contacted at the bottom of the trolley, so that the material layer on the trolley can be continuously and separately unloaded from the upper material layer which meets the process requirement and the lower material layer which is not heated to meet the process requirement.

At the discharge position at the discharge end of the moving bed, the upper end base plate of the chute or chute receiving the upper material bed heated to meet the process requirements is located at the position of the boundary between the upper material bed heated to meet the process requirements and the lower material bed not heated to meet the process requirements, such as between the upper lip and the lower lip. In this way, the upper material layer heated to meet the process requirement and the lower material layer which is not heated to meet the process requirement can be continuously and separately discharged

According to the number of moving beds constituting the moving bed system determined by specific process requirements, it is determined how to cover the new material layer with the lower material layer which is not heated to meet the process requirements.

And under the condition that the number of the moving beds forming the moving bed system is one, moving the lower material layer which is discharged when the lower material layer is moved to the discharging position of the discharging end of the moving bed and is not heated to meet the process requirement to the position where the lower material layer which is not heated to meet the process requirement covers the new material layer by the moving bed, and covering the upper new material layer of the moving bed by the lower material layer which is discharged at the discharging position of the discharging end of the moving bed and is not heated to meet the process requirement.

Under the condition that the number of the moving beds forming the moving bed system is two, the lower material layer which is discharged from any moving bed and is not heated to meet the process requirement moves to the position where the other moving bed receives the lower material layer which is not heated to meet the process requirement and covers the newly added material layer, and the lower material layer which is discharged from one moving bed and is not heated to meet the process requirement covers the newly added material layer on the other moving bed.

Under the condition that the number of the moving beds forming the moving bed system is at least three, the lower material layer which is discharged from any moving bed and is not heated to meet the process requirement moves to the position where the other moving bed adjacent to the moving bed receives the lower material layer which is not heated to meet the process requirement and covers the new material layer, and the lower material layer which is discharged from any moving bed and is not heated to meet the process requirement covers the new material layer on the other adjacent moving bed.

Under the condition that the number of the moving beds forming the moving bed system is at least four, the lower material layer which is discharged from any moving bed and is not heated to meet the process requirement moves to the position where the other moving bed adjacent to the moving bed receives the lower material layer which is not heated to meet the process requirement and covers the new material layer, and the lower material layer which is discharged from any moving bed and is not heated to meet the process requirement covers the new material layer on the other adjacent moving bed.

Under the condition of adopting the moving bed system provided by the invention, and under the condition that the number of moving beds forming the moving bed system is not less than two:

the material layer runs on each moving bed at the same speed.

Preferably the upper batch layers on each moving bed are heated to the same thickness as the process requirements.

Preferably the thickness of the lower layer on each moving bed that is not heated to process requirements is uniform.

The thickness of the new material layer on each moving bed is preferably consistent.

Preferably, the time for moving the lower layer covered by the new layer on each moving bed, which is not heated to meet the process requirements, from the position covered by the new layer to the position of the trolley at the discharge end of the moving bed at which the overturning is about to occur is consistent.

Preferably, the new bed on each moving bed is run from the position where the new bed is added to the position where the turning of the trolley at the discharge end of the moving bed is about to take place at the same time.

Preferably, the material surface forming the material bed is heated to a uniform temperature while the material bed of the corresponding thickness on each moving bed is heated on the moving bed for a uniform time.

Class 1 embodiment: the present embodiment is an embodiment corresponding to the above-described method of heating a material layer of type 1.

The embodiment of the type is suitable for the heating process that combustion air enters the material layer from the top of the material layer, the carbonaceous fuel in the pellet material forming the material layer is combusted, and the combustion tail gas leaves the material layer from the bottom of the material layer, penetrates through the material bearing layer part of the moving bed and enters the air box below the material bearing layer part of the moving bed. For example, combustion air enters the material bed from the top of the material bed, the carbonaceous fuel in the iron-containing mineral pellet material is combusted, and combustion tail gas leaves the material bed from the bottom of the material bed, passes through the material bed bearing part of the moving bed and enters the heating process of an air box; combustion-supporting air enters the material layer from the top of the material layer, the carbonaceous fuel in the cement raw material pellets is combusted, and combustion tail gas leaves the material layer from the bottom of the material layer, passes through the material layer bearing part of the moving bed and enters the heating process of the air box. In different specific processes, the carbonaceous fuel is pulverized coal, or coke powder, depending on the process requirements.

The following embodiment is an embodiment after the line start-up process is completed. See above for an embodiment of the line start-up procedure.

The heating method in the following embodiment is a heating method after the lower material layer that has not been heated to the process requirement is covered with the new material layer. The material layer drying process and the material layer preheating process before the lower material layer which is not heated to meet the process requirement is covered with the new material layer are not limited by the limited heating mode after the lower material layer which is not heated to meet the process requirement is covered with the new material layer.

If the temperature of the combustion gas leaving the lower material layer covering the new material layer which is not heated to meet the process requirement enters the new material layer is not lower than the drying and bursting temperature of the pellet material forming the new material layer, a drying section for drying the new material layer is arranged before the lower material layer which is not heated to meet the process requirement covers the new material layer.

Under the process condition that the material layer needs to be dried before entering the ignition section, the upper end faces of the breast boards on two sides of the trolley chassis are combined with the lower end faces on two sides of the oven wall of the drying section to seal the trolley and two side faces of the drying heat-carrying gas chamber, and the sealing faces on two sides of the lower surface of the trolley chassis are combined with the upper end faces on two sides of the air box below the trolley chassis to seal the two side faces of the air box of the drying section.

The trolley still needs to pass through the bed ignition section. However, the process of igniting the upper surface material layer with the flame sprayed from the burner is only necessary when starting up the production line. After the lower material layer which is not heated to meet the process requirement is obtained, namely after the starting process of the production line is completed, the material layer which is not heated to meet the process requirement and starts the combustion process but does not complete the combustion process in the lower material layer is used for continuing the material layer combustion process, and the carbonaceous fuel in the pellet material forming the upper surface material layer is not ignited by using the flame sprayed by the igniter.

By adopting the moving bed system provided by the invention, the number of moving beds forming the moving bed system is one, or two, or three, or four.

The bottom of the moving bed trolley is directly contacted with the surface of the material layer, and the moving bed trolley is a section of inclined spiral surface or a section of conical surface. Namely: the grate on the bottom of the trolley body is distributed on a moving bed bearing material layer on a section of inclined spiral surface, or the grate on the bottom of the trolley body is distributed on a moving bed bearing material layer on a section of conical surface.

The material forming the new material layer is a pellet material internally mixed with carbonaceous fuel. Depending on the particular heating process, the carbonaceous fuel is pulverized coal, or coke breeze.

And when the trolley moves to the feeding position of the feeding end of the moving bed, a new material layer is added on the trolley.

The trolley moves from the feeding end to the discharging end of the moving bed at a constant speed.

And when the trolley moves to a position for receiving the lower material layer which is not heated to meet the process requirement and covers the new material layer, covering the new material layer by using the lower material layer which is not heated to meet the process requirement.

And after the lower material layer which is not heated to meet the process requirement covers the new material layer:

combustion-supporting air enters the material layer from the top of the material layer, the carbonaceous fuel in the pellet material forming the material layer is combusted, and combustion tail gas leaves the material layer from the bottom of the material layer, passes through gaps among grate bars distributed on the bottom of the trolley body and enters an air box below the trolley body.

The pellet burning layer moves from top to bottom.

The upper material layer is heated before the lower material layer to meet the technological requirement.

The combustion-supporting air is heated by the material layer after the combustion process when passing through the material layer after the combustion process, and the residual heat in the material layer after the combustion process is brought to the material layer below the material layer after the combustion process by the combustion-supporting air passing through the material layer after the combustion process.

When the trolley moves to the position where the trolley at the discharging end of the moving bed is about to turn over, combustion-supporting air enters the material layer from the top of the material layer, combustion tail gas enters the material layer combustion process of the air box below the trolley through the bottom of the material layer, the upper material layer on the trolley is heated until the technological requirements are met, and the trolley starts to turn over.

When the trolley is turned to the discharging position, the surface of the part of the trolley bottom, which is directly contacted with the material layer, moves on the surface consistent with the surface of the part of the trolley bottom, which is directly contacted with the material layer, and the upper material layer on the trolley, which is heated to meet the process requirement, and the lower material layer, which is not heated to meet the process requirement, are continuously and separately discharged. Preferably, the position at which relative movement between the materials forming the material bed is about to occur but not yet is a position at which the upper material bed heated to process requirements is discharged separately from the lower material bed not heated to process requirements. The discharging mode is as the main point of the general embodiment.

And moving the discharged lower material layer which is not heated to meet the process requirement to a corresponding position for receiving the new material layer covered by the lower material layer which is not heated to meet the process requirement by the moving bed, so as to cover the new material layer.

And under the condition that the new material layer does not need to be dried before being covered by the lower material layer which is not heated to meet the process requirement, adding the new material layer, and then covering the new material layer by the lower material layer which is not heated to meet the process requirement. And under the condition that the new material layer needs to be dried before being covered by the lower material layer which is not heated to meet the process requirement, the new material layer is dried until the new material layer is not burst after being covered by the lower material layer which is not heated to meet the process requirement, and the lower material layer which is not heated to meet the process requirement is used for covering the new material layer.

From the platform truck at the position of moving bed charge end feeding position to the position that the platform truck is about to take place the upset at the platform truck of moving bed discharge end, the breast board tail end terminal surface of preceding platform truck both sides combines together with the breast board head end terminal surface of adjacent back platform truck both sides in the platform truck of constitution moving bed, realizes sealed between the breast board of adjacent platform truck both sides.

From the platform truck in the position of moving bed charge end feeding to the platform truck in the position of moving bed discharge end platform truck about to take place the upset, the breast board up end of platform truck vehicle bottom both sides can combine with bed of material ignition section furnace mantle both sides face down terminal surface, realizes sealed between platform truck and the furnace mantle.

From the charging position of the trolley at the charging end of the moving bed to the position of the trolley about to turn over at the discharging end of the moving bed, the sealing surfaces at two sides of the trolley bottom are combined with the upper end surfaces at two sides of the bellows below the trolley bottom, and sealing between the trolley bottom and two side surfaces of the bellows below the trolley bottom is realized.

Embodiment mode 1-1: the upper material layer heated to meet the process requirements specifically comprises the following steps: moving to the discharge end of the moving bed to complete a part of the material layer in the combustion process; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: the other part of the material layer which is moved to the discharge end of the moving bed and finishes the combustion process and the material layer which does not finish the combustion process.

Embodiment modes 1-1 to 1: the upper material layer heated to meet the process requirements specifically comprises the following steps: a part of the lower material layer which is not heated to meet the process requirements and covers the new material layer at the position covering the new material layer and is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: the other part of the lower material layer which is not heated to meet the process requirements and the newly added material layer which is moved to the discharge end of the moving bed and covers the new material layer at the position covering the new material layer.

Embodiment modes 1-1 to 1-1: the thickness of the lower material layer which is not heated to meet the process requirement after being heated to meet the process requirement is integral multiple of the thickness of the upper material layer which is heated to meet the process requirement, and the thickness of the lower material layer which is not heated to meet the process requirement after being heated to meet the process requirement is not less than twice of the thickness of the upper material layer which is heated to meet the process requirement.

Embodiment modes 1-1 to 1-2: the thickness of the lower material layer which is not heated to meet the process requirement after being heated to meet the process requirement is larger than that of the upper material layer which is heated to meet the process requirement and is smaller than twice of that of the upper material layer which is heated to meet the process requirement.

Suitable conditions for embodiments 1-1 to 1 and 1-1 to 1-2 are as follows: when the material is moved to the discharge end of the moving bed, the pellets which finish the combustion process are not bonded, or the bonding degree is not up to the degree that the upper material layer which is heated to reach the process requirement cannot be any material layer with any thickness in the material layers which finish the combustion process.

Embodiment 1-1-1-1, embodiment 1-1-1-2, the boundary line between the upper batch layer heated to the process requirements and the lower batch layer not heated to the process requirements is discharged at a position of the batch thickness where the temperature of the batch layer after completion of the combustion process is lowered to a predetermined temperature.

Embodiments 1-1-1-2 are also applicable to conditions where the degree of cohesion between the pellets completing the combustion process when moving to the discharge end of the moving bed is such that the upper layer heated to process requirements cannot be any layer of any thickness among the layers completing the combustion process. Under such conditions, the boundary between the upper batch layer heated to meet the process requirements and the lower batch layer not heated to meet the process requirements is discharged, the temperature of the batch layer after the combustion process is finished is not reduced to the position of the thickness of the batch layer which can not separate the upper batch layer heated to meet the process requirements from the lower batch layer not heated to meet the process requirements, or the temperature of the batch layer after the combustion process is finished is not reduced to the position of the thickness of the batch layer which can not separate the upper batch layer heated to meet the process requirements from the lower batch layer not heated to meet the process requirements.

Embodiment modes 1-1-2: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and covers the new material layer at the position covering the new material layer is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to a new layer at the discharge end of the moving bed.

Embodiments 1 to 3: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and a part of material layers in the new material layer are covered at the position where the new material layer is covered, which is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: another part of the new bed moving to the discharge end of the moving bed.

In the embodiment 1-1-2 and 1-1-3, under the condition that no bonding occurs between the pellets which finish the combustion process when moving to the discharge end of the moving bed, or the bonding degree is not reached to the extent that the upper material layer heated to the process requirement cannot be any material layer with any thickness in the material layers which finish the combustion process, the boundary between the upper material layer heated to the process requirement and the lower material layer which is not heated to the process requirement is discharged, and the material layer temperature which finishes the combustion process is reduced to the material layer thickness position with the preset temperature.

Embodiments 1-1-2, 1-1-3, under the condition that the degree of cohesion between pellets completing a combustion process when moving to the discharge end of a moving bed reaches a degree that the upper material layer heated to meet process requirements cannot be any thickness material layer among material layers completing a combustion process, discharging a boundary line between the upper material layer heated to meet process requirements and the lower material layer not heated to meet process requirements, the temperature of the material layer after the combustion process is not reduced to the position of the thickness of the material layer which can not be discharged by separating the upper material layer heated to meet the process requirement from the lower material layer which is not heated to meet the process requirement, or the temperature of the material layer after the combustion process is finished is not reduced to a position below the thickness position of the material layer which is heated to the upper part meeting the process requirement and is not heated to the lower part meeting the process requirement and is discharged separately.

Embodiment modes 1 to 2: the upper material layer heated to meet the process requirements specifically comprises the following steps: a material layer which is moved to the discharge end of the moving bed and completes the combustion process; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: a layer of material which has not completed the combustion process and which has moved to the discharge end of the moving bed.

Preferably, the upper material layer heated to meet the process requirements is as follows: the lower material layer which is not heated to meet the process requirement and a part of material layers in the new material layer are covered at the position where the new material layer is covered, which is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: another part of the new bed moving to the discharge end of the moving bed.

Embodiment 1-1, embodiment 1-2, the lower layer that is not heated to process requirements includes a layer that does not begin a combustion process or does not include a layer that does not begin a combustion process.

Embodiment 1-1, embodiment 1-2, wherein the lower of the layers not heated to meet the process requirements covers the new layer in a direction coincident with the direction of travel of the newly added layer that is covered, the lower of the layers not heated to meet the process requirements reaches a position covering the new layer before the upper of the lower of the layers not heated to meet the process requirements.

In the embodiments 1-1 and 1-2, after the lower material layer which is not heated to meet the process requirements is covered with the new material layer, the thickness of the material layer is less than the thickness which makes the air permeability of the material layer not suitable for the process requirements.

In the embodiments 1-1 and 1-2, the influence of the breakage of the pellets covering the new material layer on the air permeability of the material layer is limited to a degree that the air permeability of the material layer can be adapted to the process requirements. Otherwise, it is not applicable to the present invention.

In embodiment mode 1-1 and embodiment mode 1-2, under the condition that the number of moving beds constituting the moving bed system is two:

Or a moving bed consisting of a trolley with a section of conical surface on the surface where the bottom of the trolley directly contacts the material layer.

Or one moving bed is a moving bed consisting of a section of inclined spiral surface trolley on the surface where the trolley bottom is directly contacted with the material layer, and the other moving bed is a moving bed consisting of a section of conical surface trolley on the surface where the trolley bottom is directly contacted with the material layer.

Class 2 embodiment

The embodiment mode is the corresponding embodiment mode of the technical scheme of the type 2 of the method for heating the material layer provided by the invention.

The embodiment of the type is suitable for the heating process that heat-carrying gas enters a material layer from the top of the material layer, tail gas leaves the material layer from the bottom of the material layer, passes through the material-carrying layer part of a moving bed and enters a bellows below the material-carrying layer part of the moving bed. For example, a heating process for roasting iron ore pellets, a heating process for roasting a granular material after crushing of an ore, a heating process for drying a granular grain, and the like.

According to the specific process and the process conditions, the heating system is provided with a material layer drying section or is not provided with a material layer drying section before the lower material layer which is not heated to meet the process requirements is covered with a new material layer. For example, the bed drying section may be omitted under the condition of drying the granulated grains or under the condition of roasting the granulated material after crushing the ore. Under the condition of roasting the iron-containing mineral pellet material or under the condition that other pellet materials involve the drying and bursting problem in the drying process, if the temperature of the heat-carrying gas leaving the lower material layer which covers the new material layer and is not heated to reach the process requirement enters the new material layer is lower than the drying and bursting temperature of the pellet materials forming the new material layer, a material layer drying section is arranged or not arranged according to the specific process requirement. Under the condition that a drying section is not arranged according to specific process requirements, the new material layer is covered by the lower material layer which is not heated to meet the process requirements, and then the drying process is completed. If the temperature of the heat carrier gas leaving the lower material layer covering the new material layer which is not heated to meet the process requirement enters the newly added material layer is not lower than the drying and bursting temperature of the pellet material forming the new material layer, a drying section for drying the new material layer is arranged before the lower material layer which is not heated to meet the process requirement covers the new material layer.

And determining whether a material layer preheating section is arranged before the lower material layer which is not heated to meet the process requirement covers a new material layer according to the specific process and the process requirement. For example, the granular grains are dried and may not be layered in the preheating section. The crushed granular material or the roasted pellet material of the roasted ore is provided with or not provided with a material layer preheating section according to the specific process and process requirements. For example, in the embodiment where the lower material layer that is not heated to meet the process requirement is heated to meet the process requirement and the thickness of the lower material layer that is heated to meet the process requirement is not less than twice the thickness of the upper material layer that is heated to meet the process requirement, the material layer preheating section is not provided under the condition that other process factors are not considered, so that the new material layer can realize the preheating process under the lower material layer that is not heated to meet the process requirement and is relatively more reasonable from the perspective of heat energy utilization.

The heating method of the following embodiment is a heating method in which the lower material layer that is not heated to the process requirement is covered with a new material layer. The material layer drying process and the material layer preheating process before the lower material layer which is not heated to meet the process requirement is covered with the new material layer are not limited by the limited heating mode after the lower material layer which is not heated to meet the process requirement is covered with the new material layer.

The bottom of the trolley is directly contacted with the surface of the material layer part and is a section of inclined spiral surface, a section of conical surface or a section of cylindrical surface. Namely: a moving bed bearing material layer formed by a trolley with a grate on the bottom of the trolley distributed on a section of inclined spiral surface, or a moving bed bearing material layer formed by a trolley with a grate on the bottom of the trolley distributed on a section of conical surface, or a moving bed bearing material layer formed by a trolley with a grate on the bottom of the trolley distributed on a section of cylindrical surface (limited to the partial conditions in the embodiment 2-2).

The part of the trolley bottom directly contacting the material layer is not limited to be the grid, for example, when drying granular grains, the part of the trolley bottom directly contacting the material layer can be a screen.

The material forming the new material layer is a pellet material, or a granular material obtained by crushing ores, or a grain granular material and the like.

The trolley moves at a constant speed from the position where the new material layer is added to the feeding end of the moving bed to the discharging end of the moving bed.

After the lower material layer which is not heated to meet the process requirement covers the new material layer, the heat-carrying gas enters the material layer from the top of the material layer, and the tail gas leaves the material layer from the bottom of the material layer, passes through the bottom of the trolley and enters the bellows below the trolley.

When the trolley moves to the position where the trolley at the discharge end of the moving bed is about to turn over, the heating process of the material layer that the heat-carrying gas enters the material layer from the top of the material layer and the tail gas enters the bellows below the trolley through the bottom of the material layer is finished, and the trolley starts to turn over.

When the trolley is turned to the discharging position, the surface of the part of the trolley bottom, which is directly contacted with the material layer, moves on the surface consistent with the surface of the part of the trolley bottom, which is directly contacted with the material layer, and the upper material layer, which is born on the trolley and heated to meet the process requirement, and the lower material layer, which is not heated to meet the process requirement, are continuously separated and discharged. Preferably, the position at which relative movement between the materials forming the material bed is about to occur but not yet is the position at which the upper material bed heated to process requirements is discharged separately from the position at which the lower material bed not heated to process requirements is discharged. The discharging mode is as the main point of the general embodiment.

From the platform truck in the position of moving bed charge end feeding position to the platform truck in the position of moving bed discharge end platform truck and being about to take place the upset, the breast board tail end terminal surface of preceding platform truck vehicle bottom both sides combines together with the breast board head end terminal surface of adjacent back platform truck vehicle bottom both sides in the platform truck of constitution removal bed, realizes sealed between the breast board of adjacent platform truck both sides.

From the charging position of the trolley at the charging end of the moving bed to the position of the trolley about to turn over at the discharging end of the moving bed, the upper end surfaces of the baffle plates at the two sides of the bottom of the trolley are combined with the lower end surfaces of the two side surfaces of the furnace cover (or the heat-carrying gas chamber), and the sealing between the trolley and the furnace cover (or the heat-carrying gas chamber) is realized.

Embodiment mode 2-1: the upper material layer heated to meet the process requirements specifically comprises the following steps: a part of the lower material layer which is not heated to meet the process requirements and covers the new material layer at the position covering the new material layer and is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: the other part of the lower material layer which is not heated to meet the process requirements and the new material layer which is moved to the discharge end of the moving bed and covers the new material layer at the position covering the new material layer.

The thickness of the lower material layer which is not heated to meet the process requirement after being heated to meet the process requirement is integral multiple of the thickness of the upper material layer which is heated to meet the process requirement, and the thickness of the lower material layer which is not heated to meet the process requirement after being heated to meet the process requirement is not less than twice of the thickness of the upper material layer which is heated to meet the process requirement.

Under the condition that the number of moving beds forming the moving bed system is two:

When the lower material layer which is not heated to meet the process requirement covers the new material layer, the lower material layer in the lower material layer which is not heated to meet the process requirement reaches the position covering the new material layer before the upper material layer in the lower material layer which is not heated to meet the process requirement.

Embodiment mode 2 to 2: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and covers the new material layer at the position covering the new material layer is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to a new layer at the discharge end of the moving bed.

When the lower material layer which is not heated to meet the process requirement covers the newly added material layer, the upper material layer in the lower material layer which is not heated to meet the process requirement reaches the position covering the new material layer before the lower material layer in the lower material layer which is not heated to meet the process requirement.

The number of the moving beds forming the moving bed system is two, and the moving bed formed by the trolley with the trolley bottom directly contacting the material layer is a section of cylindrical surface.

Or when the lower material layer which is not heated to meet the process requirement covers the newly added material layer, the upper material layer and the lower material layer which are not heated to meet the process requirement cover the new material layer in a non-sequential manner in the direction which is opposite to the moving direction of the covered new material layer and is consistent with the running direction of the covered newly added material layer.

In embodiment 2-1 and embodiment 2-2, after the lower material layer which is not heated to meet the process requirements is covered with the newly added material layer, the thickness of the material layer is smaller than the thickness which makes the air permeability of the material layer not suitable for the process requirements.

In the embodiment 2-1 and the embodiment 2-2, under the condition that the material forming the material layer is the pellet material, the influence of the breakage of the pellet material covering the newly added material layer on the air permeability of the material layer is limited within the degree of adapting the air permeability of the material layer to the process requirement. Otherwise, the present invention is not applicable.

Class 3 embodiment: this type of embodiment is an embodiment according to claim 3.

The implementation mode is suitable for roasting the pellet material prepared by adding the carbonaceous reducing agent into the iron-containing mineral powder material, or roasting the mixture of the iron-containing mineral powder material and the carbonaceous raw material, or heating other powder materials, or dry-firing the blocky material, and the like.

The heating method of this type of embodiment is: the upper material layer absorbs heat, and the heat is transferred to the lower material layer through the upper material layer.

Under the condition of adopting indirect heating mode, the device that generates heat is above the bed of material, and the device that generates heat heats more upper portion bed of material, and more upper portion bed of material absorbs the heat, and the heat is passed through more upper portion bed of material and is transmitted to less part bed of material.

Under the condition that the material layers are heated by the heat-carrying gas, the upper material layers absorb heat, and the heat is transferred to the lower material layers through the upper material layers.

Under the condition that combustible gas overflowed from the material layer is used for providing heat source for the material layer or partially provides heat source for the material layer, the combustible gas overflowed from the material layer is combusted above the material layer, the upper material layer absorbs heat, and the heat is transferred to the lower material layer through the upper material layer.

The bottom of the moving bed trolley is directly contacted with the surface of the material layer, and the moving bed trolley is a section of inclined spiral surface or a section of conical surface. Namely: the material layer is supported by a moving bed composed of a section of inclined helical surface trolley on the surface of the trolley bottom directly contacting the material layer, or a section of conical surface trolley on the surface of the trolley bottom directly contacting the material layer, or a section of cylindrical surface on the surface of the trolley bottom directly contacting the material layer (limited to the embodiment 3-2, and simultaneously complying with the relevant process requirements).

The bottom of the trolley forming the moving bed is not ventilated, and the tail end of the bottom of the former trolley and the head end of the bottom of the adjacent latter trolley are not ventilated.

The material for forming the new material layer is a pellet material internally matched with a carbonaceous reducing agent (coal powder or coke powder), or an iron-containing mineral powder material, a block material or other powder materials mixed with a carbonaceous raw material.

And when the trolley moves to the position where the new material layer is added at the feeding end of the moving bed, adding the new material layer on the trolley.

The trolley moves from the feeding position of the feeding end of the moving bed to the discharging end at a constant speed.

The upper material layer on the trolley is heated before the lower material layer until the technological requirement is met.

When the trolley moves to the position where the trolley at the discharging end of the moving bed is about to turn over, the upper material layer absorbs heat, the heating process that the heat is transferred to the lower material layer through the upper material layer is finished, the upper material layer which is heated to meet the process requirements, and the trolley begins to turn over.

The thickness of the upper material layer heated to meet the process requirement is consistent with the thickness of the new material layer heated to meet the process requirement.

After the new material layer is added, the lower material layer which is not heated to meet the process requirements is used for covering the new material layer.

From the platform truck in the position of moving bed charge end feeding to the platform truck in the position of moving bed discharge end platform truck about to take place the upset, the breast board up end of platform truck vehicle bottom both sides combines with stove cover both sides face lower terminal surface, realizes sealed between platform truck and the stove cover.

From the platform truck in the position of moving bed charge end feeding position to the platform truck in the position of moving bed discharge end platform truck and about to take place the upset, the platform truck of constitution moving bed in preceding platform truck vehicle bottom tail end terminal surface combines together with adjacent back platform truck vehicle bottom head end terminal surface, realizes sealed between the adjacent platform truck vehicle bottom.

Embodiment mode 3-1: the upper material layer heated to meet the process requirements specifically comprises the following steps: a part of the lower material layer which is not heated to meet the process requirements and covers the new material layer at the position covering the new material layer and is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: the other part of the lower material layer which is not heated to meet the process requirements and the new material layer which is moved to the discharge end of the moving bed and covers the new material layer at the position covering the new material layer.

The thickness of the lower material layer which is not heated to meet the process requirement after being heated to meet the process requirement is integral multiple of the thickness of the upper material layer which is heated to meet the process requirement. And the lower material layer which is not heated to meet the process requirement is heated to the thickness which is not less than twice of the thickness of the upper material layer which is heated to meet the process requirement. Preferably, the lower layer which is not heated to meet the process requirements is heated to a thickness which is three times the thickness of the upper layer which is heated to meet the process requirements.

When the lower material layer which is not heated to meet the process requirement covers the new material layer, the lower material layer in the lower material layer which is not heated to meet the process requirement reaches a position covering the newly added material layer before the upper material layer in the lower material layer which is not heated to meet the process requirement.

Embodiment mode 3 to 2: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and covers the new material layer at the position covering the new material layer is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to a new layer at the discharge end of the moving bed.

Class 4 embodiment: this type of embodiment is an embodiment according to claim 4.

The embodiment is suitable for roasting the pellet, for example, the pellet is prepared by roasting the iron-containing mineral powder with a carbonaceous reducing agent, or the mixture of the iron-containing mineral powder and a carbonaceous raw material, or heating other powder, or dry distillation block-shaped materials, etc.

The heating method of this embodiment is the same as that of embodiment 3, namely: the upper material layer absorbs the heat of the heating material layer and transfers the heat to the lower material layer through the upper material layer.

The material forming the material layer is a pellet material, a block material, a powder material or a mixture of a powder material and a granular material.

When the material layer is carried by the material carrying layer part, the material carrying layer is moved on a plane, for example, the material carrying layer is carried by a rotary hearth furnace bottom, or the material carrying layer is moved by a plurality of trolleys (two sides of the trolley bottom are not provided with breast boards) with head ends and tail ends connected in sequence, or other straight moving beds.

The material bearing layer of the moving bed is not breathable.

Under the condition of adopting the rotary hearth furnace, the inner side and the outer side edges of the bottom of the rotary hearth furnace are combined with the inner side and the outer side lower end surfaces of the furnace cover, so that the sealing between the bottom of the rotary hearth furnace and the furnace cover is realized.

Under the condition of adopting a moving bed material bearing layer consisting of a plurality of trolleys with head ends and tail ends connected in sequence, the edges of two sides of the bottom of the trolley car are combined with the lower end surfaces of two sides of the furnace cover, so that the sealing between the furnace cover and the bottom of the trolley car is realized. The end face of the tail part of the bottom of the previous trolley is combined with the end face of the head part of the bottom of the next trolley adjacent to the tail part of the bottom of the previous trolley, so that the sealing between the bottoms of the adjacent trolleys is realized.

Under the condition of using other straight moving bed to bear the material layer, for example, using belt conveyor to bear the material layer, the two sides of the furnace bottom are combined with the lower end surfaces of the two sides of the furnace cover, so as to realize the sealing between the two sides of the furnace bottom and the two sides of the furnace cover.

The material bearing layer of the moving bed moves at a constant speed from the feeding position to the discharging position. Preferably, the moving bed moves in the horizontal plane while moving the carrier layer in the carrier layer portion.

And heating the material layer moved to the position for discharging the material layer heated to meet the process requirement until the material layer meeting the process requirement is discharged.

And discharging the material layer which is not heated to meet the process requirement and is moved to the position for discharging the lower material layer which is not heated to meet the process requirement.

And moving the discharged lower material layer which is not heated to meet the process requirement to a position for receiving the lower material layer which is not heated to meet the process requirement to cover a new material layer for covering the new material layer.

Embodiment 4-1: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and a part of material layers in the new material layer are covered at the position covering the new material layer, the lower material layer which is not heated to meet the process requirement is moved to the position of discharging the upper material layer which is heated to meet the process requirement, and the lower material layer which is not heated to meet the process requirement is specifically: moving to discharge the other part of the new material layer which is not heated to the lower material layer position meeting the process requirement.

Preferably, not less than two layers of material heated to meet the process requirements are discharged before the lower layer of material which is not heated to meet the process requirements is discharged. Namely: when the first layer is heated to the position of the material layer which meets the process requirement and runs to the moving bed, the first layer is discharged and heated to the material layer which meets the process requirement, and when the second layer is heated to the position of the material layer which meets the process requirement and runs to the position of the second layer, the second layer is discharged and heated to the material layer which meets the process requirement. And so on.

Embodiment 4-2: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and is covered with the new material layer at the position covering the new material layer and moved to the position of discharging the upper material layer heated to meet the process requirement is specifically as follows: moving the moving bed to discharge a new material layer which is not heated to the lower material layer position meeting the process requirement.

In the aforementioned embodiment of type 1, the bottom of the car constituting the moving bed is provided with fenders on both sides.

In the aforementioned embodiments 2 and 3, under the condition that the upper material layer heated to meet the process requirement is moved to the discharge end of the moving bed, the lower material layer not heated to meet the process requirement is heated to cover the new material layer at the position covering the new material layer, which meets the process requirement, both sides of the bottom of the trolley vehicle carrying the material layer may be provided with or without the fences. Under the condition that no breast board is arranged on the two sides of the bottom of the trolley, the edges on the two sides of the bottom of the trolley are combined with the lower end faces on the two sides of the furnace cover, so that the sealing between the bottom of the trolley and the furnace cover is realized. Under the condition, the lower end faces of two sides of the furnace cover are fixed, and the sealing part of the bottom of the trolley and the sealing part of the furnace cover move relatively.

In the aforementioned embodiments in category 2 and category 3, under the condition that the upper material layer heated to meet the process requirement is moved to the discharge position at the discharge end of the moving bed, the position covering the new material layer covers a part of the material layer in the lower material layer which is not heated to meet the process requirement, and the bottom of the trolley vehicle preferably carrying the material layer is provided with the fences at two sides.

The method for heating a material bed and the moving bed system provided by the present invention are described in detail above. In view of the technical problem to be solved by the present invention, it is an object of the present invention to provide a method for controlling the temperature of a material bed in a moving bed, which method is capable of controlling the temperature of a material bed in a position adjacent to a moving bed carrier material bed to the same temperature as the material bed in an upper position of the material bed without increasing the thermal strength of the material bed in a lower position of the material bed adjacent to the moving bed carrier material bed, and which method is capable of discharging a lower material bed moved to a discharge end of each moving bed by gravity and moving the lower material bed moved to a position corresponding to the moving bed receiving the lower material bed to cover the newly added material bed, and a method for controlling the temperature of a material bed in a moving bed to a lower position, which method is capable of continuously separating and discharging the upper material bed meeting process requirements and the lower material bed not meeting the process requirements, and a method for classifying and introducing the contents of the embodiments in accordance with heating methods, which method helps a person skilled in the art understand An upper material layer required by the process and a lower material layer which is not heated to meet the process requirement, and how to cover the newly added material layer with the lower material layer which is not heated to meet the process requirement. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

It should be noted that, in fig. 1, 1-1 and 1-2 are respectively a feeding end and a discharging end of a moving bed, and 3 is a moving direction of a material-carrying layer at a material-carrying layer position of the moving bed; the feed end 1-1 is below the discharge end 1-2. When the trolley is about to turn over from the feeding position of the feeding end of the moving bed to the discharging position of the discharging end of the moving bed, the trolley moves from the feeding end 1-1 to the discharging end 1-2 when the trolley bears the material layer at the material bearing layer position of the moving bed.

In the attached drawings 2-1 and 2-2, 1-1 and 1-2 are respectively a feeding end and a discharging end of one moving bed, 2-1 and 2-2 are respectively a feeding end and a discharging end of the other moving bed, 3 is the moving direction of a material bearing layer part of the moving beds when the material bearing layer part is positioned, the feeding end 1-1 is positioned below the discharging end 2-2, and the feeding end 2-1 is positioned below the discharging end 1-2. When the material layer is loaded at the material loading layer part of the moving bed, the material loading layer moves from the feeding end 1-1 to the discharging end 1-2 and moves from the feeding end 2-1 to the discharging end 2-2.

In the attached figure 3, 1-1 and 1-2 are respectively a feeding end and a discharging end of one moving bed, 2-1 and 2-2 are respectively a feeding end and a discharging end of the other moving bed, and 3 is the running direction of a material bearing layer part of the moving bed when the material bearing layer is positioned; the charging end 1-1 is below the discharging end 2-2, and the charging end 2-1 is below the discharging end 1-2. When the material bearing layer is moved at the material bearing layer position, the material bearing layer moves from 1-1 to 1-2 and from 2-1 to 2-2.

In the attached figure 4, 1-1, 2-1, 3-1 and 1-2, 2-2, 3-2 are respectively a feeding end and a discharging end of a moving bed, and 3 is the moving direction of a material bearing layer part of the moving bed when the material bearing layer is positioned; the feeding ends 1-1, 2-1 and 3-1 are respectively arranged below the discharging ends 3-2, 1-2 and 2-2; when the material bearing layer is moved at the material bearing layer position, the material bearing layer moves from 1-1 to 1-2, from 2-1 to 2-2 and from 3-1 to 3-2.

FIG. 5-1 is a schematic view showing a downward-opening groove covering an upward-opening groove at the bottom end of a preceding trolley and an upward-opening groove at the bottom end of a succeeding trolley under the condition that the trolleys are not turned.

FIG. 5-2 is a schematic diagram of a tank with a downward opening covering a tank with an upward opening at the tail end of the bottom of the previous trolley and a tank with an upward opening at the head end of the bottom of the next trolley when the trolleys move to the discharge end of the moving bed and turn over.

In the attached drawings 5-1 and 5-2, 1 is the bottom of a groove with a downward opening, 2 is a part extending towards two sides outside the opening part of the groove with the downward opening, 3 and 4 are respectively the opening surfaces of the tail end of the bottom of the previous trolley and the opening part of the next trolley in the vertical direction, 5 and 6 are the end parts of the tail end of the bottom of the previous trolley and the head end of the bottom of the next trolley, 7 and 8 are respectively a baffle plate which is fixed at the tail part of the bottom of the previous trolley and the head end of the bottom of the next trolley and limits the moving range of the groove with the downward opening, 9 is the surface where the lower surface of the bottom of the trolley is located, or the surface where the bottom of the trolley is combined with the upper surfaces of two sides of an air box below the bottom of the trolley, 10 is the surface where the bottom of the trolley directly contacts with a material layer, and 11 is the surface below the surface where the bottom of the trolley directly contacts with the material layer. From the platform truck at the position of moving bed charge end reinforced position to the platform truck at the position of moving bed discharge end not beginning to take place the upset yet, preceding platform truck vehicle bottom tail end terminal surface meets with adjacent back platform truck head end terminal surface, promptly: 5 and 6 are connected, and the groove with the downward opening plays a role of material sealing under the condition that the material forming the material layer is powdery. From the platform truck at the removal of moving bed discharge end emergence upset start, preceding platform truck vehicle bottom tail end terminal surface forms V type breach with adjacent back platform truck vehicle bottom head end terminal surface, and V type breach is lived to the downward groove cover of opening, prevents that V type breach department from leaking the material. The baffle plates 7 and 8 fixed on the side surface of the groove with the upward opening are matched with the part extending outwards of the opening part of the groove with the downward opening, so that the groove with the downward opening is prevented from falling off in the process of overturning the trolley.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The method for heating a material layer and the moving bed system provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1.A moving bed system comprising: (1) the moving bed that the platform truck that a plurality of head ends and tail end meet in proper order is constituteed, (2) the platform truck is from moving bed charge end feeding position to discharge end discharge position uniform velocity migration, (3) the platform truck moves and takes place the upset to moving bed discharge end, (4) the platform truck corresponding site geometry that constitutes same moving bed is unanimous, (5) the platform truck corresponding site geometry that constitutes same moving bed is unanimous, (6) from the platform truck is moving bed charge end feeding position to the platform truck and is being about to take place the position of upset at moving bed discharge end, the face at platform truck bottom direct contact bed of material position place and the inclination of horizontal plane are less than the inclination that takes place relative motion between the material of the formation bed of material that the platform truck bore, a serial communication port, still include: (1) at the discharge end of the moving bed, when the trolley turns to the discharge position, the bottom of the trolley directly contacts the surface of the material layer and moves on the surface consistent with the surface of the bottom of the trolley directly contacting the material layer, (2) the moving bed receives the position of the lower material layer covering the new material layer and is below the discharge end of the moving bed, (3) the inclination angle between the surface of the bottom of the trolley directly contacting the material layer and the horizontal plane is smaller than the inclination angle of relative movement between the materials forming the material layer and borne by the trolley from the position where the trolley starts to turn at the discharge end of the moving bed to the position where the trolley starts to turn at the discharge end of the moving bed.

2. A moving bed system according to claim 1, wherein: the number of the moving beds is one.

3. A moving bed system according to claim 2, wherein: the moving bed receives the position of the lower material layer covering the new material layer and is arranged below the discharging end of the moving bed.

4. A moving bed system according to claim 1, wherein: the number of the moving beds is two.

5. A moving bed system according to claim 4, wherein: any one of the moving beds receives the position where the lower material layer covers the new material layer and is arranged below the discharging end of the other moving bed.

6. A moving bed system according to claim 1, wherein: the number of the moving beds is three.

7. A moving bed system according to claim 1, wherein: the number of the moving beds is four.

8. A moving bed system according to claim 6, or 7, wherein: any one of the moving beds receives a lower material layer at a position covering a new material layer, below the discharge end of the other moving bed adjacent to the lower material layer.

9. A moving bed system according to claim 2, or 4, or 6, or 7 wherein: the trolley forming the moving bed has a section of inclined spiral surface on the surface where the bottom of the trolley is directly contacted with the material layer.

10. A moving bed system according to claim 9, wherein: the bottom of the trolley forming the moving bed is directly contacted with the inclined helicoid where the material layer is positioned and is arranged above the other section of the positive helicoid.

11. A moving bed system according to claim 9, wherein: the bottom of the trolley forming the moving bed is directly contacted with the inclined spiral surface where the material layer is positioned, and is arranged above the other section of inclined spiral surface.

12. A moving bed system according to claim 4, or 6, or 7, wherein: the trolley forming the moving bed has a conical surface on the surface where the bottom of the trolley is directly contacted with the material layer.

13. A moving bed system according to claim 12, wherein: the bottom of the trolley forming the moving bed is directly contacted with the conical surface where the material layer is positioned, and the trolley is arranged above the conical surface at the other section.

14. A moving bed system according to claim 12, wherein: the bottom of the trolley forming the moving bed is directly contacted with the conical surface where the material layer is positioned and is arranged above one section of sector.

15. A moving bed system according to claim 4, wherein: the trolley forming the moving bed has a cylindrical surface on the surface where the bottom of the trolley is directly contacted with the material layer.

16. A moving bed system according to claim 15, wherein: the bottom of the trolley which forms the moving bed is directly contacted with the cylindrical surface where the material layer is positioned and is arranged above a section of rectangular plane.

17. A moving bed system according to claim 4, wherein: the trolley which forms the moving bed is characterized in that the surface of the trolley bottom which is directly contacted with the material layer is a section of inclined spiral surface; the trolley which forms the other moving bed has a conical surface at the bottom of the trolley, which is directly contacted with the material layer.

18. A moving bed system according to claim 17, wherein: the bottom of the trolley which forms the moving bed is directly contacted with the inclined spiral surface where the material layer is positioned, and the trolley is arranged above the other section of inclined spiral surface or above one section of positive spiral surface; the bottom of the trolley forming the other moving bed is directly contacted with the conical surface where the material layer is positioned, and the trolley is arranged above the conical surface of the other section or above the sector of the section, and one of the conical surface and the conical surface is selected from the conical surface of the other section and the sector of the other section.

19. A moving bed system according to claim 4, wherein: the trolley which forms the moving bed has a conical surface on the surface where the bottom of the trolley is directly contacted with the material layer; the trolley which forms the other moving bed has a conical surface at the bottom of the trolley, which is directly contacted with the material layer.

20. A moving bed system according to claim 19, wherein: the bottom of the trolley forming the moving bed is directly contacted with the conical surface where the material layer is positioned and is arranged above the conical surface at the other section; the bottom of the trolley forming the other moving bed is directly contacted with the conical surface where the material layer is positioned and is arranged above one section of sector.

21. A moving bed system according to claim 6, wherein: the trolley which forms the moving bed has a conical surface on the surface where the bottom of the trolley is directly contacted with the material layer; the trolley which forms the other two moving beds has a conical surface on the surface where the bottom of the trolley is directly contacted with the material layer.

22. A moving bed system according to claim 21, wherein: the bottom of the trolley forming the moving bed is directly contacted with the conical surface where the material layer is positioned and is arranged above the conical surface at the other section; the bottom of the trolley which forms the other two moving beds is directly contacted with the conical surface where the material layer is positioned and is arranged above one section of sector.

23. A moving bed system according to claim 21, wherein: the bottom of the trolley which forms the moving bed is directly contacted with the conical surface where the material layer is positioned and is arranged above a section of sector; the bottom of the trolley which forms the other two moving beds is directly contacted with the conical surface where the material layer is positioned and is arranged above the conical surface at the other section.

24. A moving bed system according to claim 2, or 4, or 6, or 7 wherein: the trolley which forms the moving bed is characterized in that the head end and the tail end of the surface where the material layer part is directly contacted with the bottom of the trolley are arranged on the head end face and the tail end face of the bottom of the trolley.

25. A moving bed system according to claim 2, or 4, or 6, or 7 wherein: the trolley forming the moving bed is characterized in that the head end and the tail end of the surface below the surface where the material layer part is located are directly contacted with the bottom of the trolley, and are arranged on the head end face and the tail end face of the bottom of the trolley.

26. A moving bed system according to claim 10, or 11, or 13, or 14, or 16, or 18, or 20, or 22, or 23 wherein: the included angle between the head end and the tail end of the surface where the vehicle bottom directly contacts the material layer part is consistent with the included angle between the head end and the tail end of the surface below the surface where the vehicle bottom directly contacts the material layer part.

27. A moving bed system according to claim 10, or 11, or 13, or 14, or 18, or 20, or 22, or 23 wherein: the axis of the surface of the trolley which forms the moving bed and the bottom of which is directly contacted with the material layer is vertical to and intersected with the axis of the surface below the surface of the bottom of which is directly contacted with the material layer.

28. A moving bed system according to claim 2, or 4, or 6, or 7 wherein: moving on a surface below the surface of the trolley at which the bottom of the trolley is in direct contact with the material layer and on a surface consistent with the surface below the surface of the trolley at which the bottom of the trolley is in direct contact with the material layer from the feeding position of the trolley at the feeding end of the moving bed to the position of the trolley about to turn over at the discharging end of the moving bed.

29. A method for heating a material layer, which is applied to a moving bed system according to any one of claims 1 to 28, comprises (1) moving a material-carrying layer with a support material layer along with the material-carrying layer, (2) adding a new material layer when the material-carrying layer moves to a position for adding the new material layer, (3) moving the material-carrying layer from the material-feeding position to the material-discharging position at a constant speed, (4) heating the upper material layer before the lower material layer to meet the process requirements, (5) heating the upper material layer moved to the position for discharging and heating the upper material layer to meet the process requirements to the position for reaching the process requirements, (6) discharging the upper material layer moved to the position for discharging and heating the upper material layer to meet the process requirements to the position for discharging the upper material layer to meet the process requirements, (7) heating the upper material layer to meet the process requirements to a thickness consistent with the thickness of the added new material layer after the process requirements is heated to meet the process requirements, it is characterized by also comprising: (1) discharging the lower material layer which is not heated to meet the process requirement and is moved to the position for discharging the lower material layer which is not heated to meet the process requirement, and (2) moving the lower material layer which is discharged to the position for receiving the lower material layer which is not heated to meet the process requirement and covering the new material layer, and covering the new material layer with the lower material layer which is not heated to meet the process requirement.

30. The method of heating a material layer as claimed in claim 29, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: a part of the material layers which finish the combustion process and move to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement; the method specifically comprises the following steps: the other part of the material layer which finishes the combustion process and the material layer which does not finish the combustion process move to the discharge end of the moving bed.

31. The method of heating a material layer as claimed in claim 30, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: a part of the lower material layer which is not heated to meet the process requirements and covers the new material layer at the position covering the new material layer and is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: the other part of the lower material layer which is not heated to meet the process requirements and the new material layer which is moved to the discharge end of the moving bed and covers the new material layer at the position covering the new material layer.

32. The method of heating a material layer as claimed in claim 30, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and covers the new material layer at the position covering the new material layer is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: a new layer of material moving to the discharge end of the moving bed.

33. The method of heating a material layer as claimed in claim 30, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and a part of material layers in the new material layer are moved to the discharge end of the moving bed and covered with the new material layer at the position covered with the new material layer; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: another part of the material layer in the new material layer moving to the discharge end of the moving bed.

34. The method of heating a material layer as claimed in claim 29, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: a material layer which is moved to the discharge end of the moving bed and completes the combustion process; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: a layer of material that has not completed a combustion process that has moved to the discharge end of the moving bed.

35. A method of heating a bed as claimed in claim 30 or 34, wherein: the material forming the material layer is a pellet material internally mixed with carbonaceous fuel.

36. A method of heating a bed as claimed in claim 30 or 34, wherein: after the lower material layer which is not heated to meet the process requirements covers the new material layer, combustion-supporting air enters the material layer from the top of the material layer, the carbonaceous fuel in the pellet material of the material layer is formed by combustion, and combustion tail gas leaves the material layer from the bottom of the new material layer and enters a tail gas box below the moving bed.

37. A method of heating a bed as claimed in claim 30 or 34, wherein: the pellet burning layer moves from top to bottom.

38. A method of heating a bed as claimed in claim 30 or 34, wherein: the combustion-supporting air is heated by the material layer after the combustion process when passing through the material layer after the combustion process is finished, and the residual heat in the material layer after the combustion process is brought to the material layer below the material layer after the combustion process by the combustion-supporting air.

39. The method of heating a material layer as claimed in claim 29, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: a part of the lower material layer which is not heated to meet the process requirements and covers the new material layer at the position covering the new material layer and is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: the other part of the lower material layer which is not heated to meet the process requirements and the new material layer which is moved to the discharge end of the moving bed and covers the new material layer at the position covering the new material layer.

40. The method of heating a material layer as claimed in claim 29, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and covers the new material layer at the position covering the new material layer is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to a new layer at the discharge end of the moving bed.

41.A method of heating a bed as claimed in claim 39 or 40, in which: the material forming the material layer comprises pellet material.

42. A method of heating a bed as claimed in claim 39 or 40, in which: after the lower material layer which is not heated to meet the process requirement covers the new material layer, heat-carrying gas enters the material layer from the top of the material layer, and tail gas leaves the material layer from the bottom of the new material layer and enters a tail gas box below the moving bed.

43. The method of heating a material layer as claimed in claim 29, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: a part of the lower material layer which is not heated to meet the process requirements and covers the new material layer at the position covering the new material layer and is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: the other part of the lower material layer which is not heated to meet the process requirements and the new material layer which is moved to the discharge end of the moving bed and covers the new material layer at the position covering the new material layer.

44. The method of heating a material layer as claimed in claim 29, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: the lower material layer which is not heated to meet the process requirement and covers the new material layer at the position covering the new material layer is moved to the discharge end of the moving bed; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to a new layer at the discharge end of the moving bed.

45. The method of heating a material layer as claimed in claim 29, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: moving to a position for discharging an upper material layer heated to meet the process requirement, covering the lower material layer which is not heated to meet the process requirement and a part of material layers in the new material layer at the position for covering the new material layer; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to discharge the other part of the new material layer which is not heated to the lower material layer position meeting the process requirement.

46. The method of heating a material layer as claimed in claim 29, wherein: the upper material layer heated to meet the process requirements specifically comprises the following steps: moving to a lower material layer which is discharged and heated to the position of the upper material layer meeting the process requirement, and covering the new material layer at the position covering the new material layer, wherein the lower material layer which is not heated to meet the process requirement is not heated; the lower material layer which is not heated to meet the process requirement specifically comprises the following steps: moving to discharge a new material layer which is not heated to the lower material layer position meeting the process requirement.

47. A method of heating a bed of material as claimed in claim 43, or 44, or 45, or 46, wherein: the material forming the material layer comprises powdery material.

48. A method of heating a bed of material as claimed in claim 43, or 44, or 45, or 46, wherein: the upper material layer absorbs the heat of the heating material layer, and the heat is transferred to the lower material layer through the upper material layer.

49. A method of heating a bed of material as claimed in claim 43, or 44, or 45, or 46, wherein: the material bearing layer is carried by a moving bed with the air-tight material bearing layer part.

50. A method of heating a bed as claimed in claim 45 or 46, in which: when the material layer is loaded by the material loading layer part, the material loading layer is loaded by the moving bed on one plane.

51. The method of heating a material layer as claimed in claim 30, or 34, or 39, or 43, wherein: under the condition that the number of the moving beds forming the moving bed system is two, the moving bed formed by the trolley with a section of inclined spiral surface on the surface where the trolley bottom directly contacts the material layer is adopted.

52. The method of heating a material layer as claimed in claim 30, or 34, or 39, or 43, wherein: under the condition that the number of the moving beds forming the moving bed system is two, the moving bed formed by the trolley with a section of conical surface is adopted, wherein the surface of the trolley bottom, which is directly contacted with the material layer, is positioned.

53. The method of heating a material layer as claimed in claim 30, or 34, or 39, or 43, wherein: under the condition that the number of the moving beds forming the moving bed system is two, one moving bed is a moving bed formed by a trolley with a section of inclined spiral surface on the surface where the trolley bottom directly contacts the material layer, and the other moving bed is a moving bed formed by a trolley with a section of conical surface on the surface where the trolley bottom directly contacts the material layer.

54. The method of heating a material layer as claimed in claim 30, or 34, or 39, or 40, wherein: the influence of the broken pellet material in the lower material layer which is not heated to meet the technological requirement and covers the new material layer on the air permeability of the material layer is limited within the degree that the air permeability of the material layer can adapt to the technological requirement.

55. The method of heating a material layer as claimed in claim 30, or 34, or 39, or 40, wherein: after the lower material layer which is not heated to meet the process requirement is covered with the new material layer, the thickness of the material layer is smaller than the thickness which makes the air permeability of the material layer not adapt to the process requirement.

56. The method of heating a material layer as claimed in claim 30, or 34, or 39, or 43, wherein: when the lower material layer which is not heated to meet the process requirement covers the new material layer, the lower material layer in the lower material layer which is not heated to meet the process requirement covers the new material layer in the direction consistent with the moving direction of the covered new material layer, and the upper material layer in the lower material layer which is not heated to meet the process requirement covers the new material layer in advance of the lower material layer in the lower material layer which is not heated to meet the process requirement.