CN212819784U

CN212819784U - Cylindrical gas-solid reaction device of annular space moving bed

Info

Publication number: CN212819784U
Application number: CN202021571360.4U
Authority: CN
Inventors: 张媛
Original assignee: Beijing Yuzhi Environmental Protection Technology Co Ltd
Current assignee: Beijing Yuzhi Environmental Protection Technology Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-30
Anticipated expiration: 2030-07-31

Abstract

The utility model provides a gas-solid reaction unit of a cylindrical annular gap moving bed. The gas-solid reaction device of the annular space moving bed comprises: the shell is in a vertically arranged cylindrical shape; the annular space reaction structure arranged in the shell is cylindrical, and an annular space cavity for containing solid particles is formed in the annular space reaction structure. The utility model discloses an annular space reaction structure, its inside formation annular space chamber with the holding solid particle, whole platform equipment design is succinct, compact structure, space utilization are reasonable, area is little, installation convenient to use. In addition, the annular space reaction structure ensures that gas can contact solid particles in more directions in the annular space reaction structure, thereby avoiding the occurrence of reaction dead angles and ensuring the reaction uniformity.

Description

Cylindrical gas-solid reaction device of annular space moving bed

Technical Field

The utility model relates to the fields such as chemical industry, energy, environmental protection especially relate to a gas-solid reaction unit of annular gap removal bed of tube-shape.

Background

The moving bed is widely applied to the fields of energy processing, multiphase chemical reaction, substance separation, flue gas purification and the like, and in the chemical process, the moving bed reactor is valued in the research field, including organic chemical fields of methanol to propylene, low-carbon light hydrocarbon aromatization, high-molecular solid phase synthesis and the like, and inorganic chemical fields of inorganic material synthesis, uranium element concentration and the like.

However, in the process of implementing the present invention, the applicant finds that the existing moving bed has a complicated design, a redundant structure and a large occupied area, and further causes inconvenience in installation and use.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a gas-solid reaction device of a cylindrical annular space moving bed, which aims to at least partially solve one of the technical problems.

(II) technical scheme

The utility model discloses the annular space of tube-shape removes bed gas-solid reaction unit includes: the shell is in a vertically arranged cylindrical shape; the annular space reaction structure arranged in the shell is cylindrical, and an annular space cavity for containing solid particles is formed in the annular space reaction structure.

In some embodiments of the present invention, the inner side of the annular space reaction structure forms a first space and forms a second space with the housing; the gas-solid reaction device of the annular moving bed further comprises: the partition plate is arranged in one of the first space and the second space, the partition plate divides the space into an air inlet cavity and an air outlet cavity, and the other one of the first space and the second space is used as a circulating cavity; wherein, correspond the air inlet chamber and go out the air cavity and set up air inlet and gas outlet respectively.

In some embodiments of the present invention, the first space serves as a circulation chamber; the partition board is a transverse partition board which divides the second space into an air inlet cavity and an air outlet cavity; the air inlet and the air outlet are respectively arranged on the corresponding shell at the outer sides of the air inlet cavity and the air outlet cavity.

In some embodiments of the present invention, the feed inlet and the discharge outlet of the annular space reaction structure are respectively disposed above and below the annular space cavity.

In some embodiments of the present invention, the method further comprises: the inner side of the conical annular feeding bin is used for sealing the upper part of the circulation cavity, the inner space of the conical annular feeding bin is communicated with the annular space cavity, and the upper part of the conical annular feeding bin is provided with a feeding hole.

In some embodiments of the present invention, the method further comprises: a feed chute connected below the annular space reaction structure, connected to the outer layer of the annular space reaction structure and forming a downward slope.

In some embodiments of the present invention, the method further comprises: and the valve plate mechanism is fixed below the blanking chute and is controlled to extend out and retract so as to control the discharging speed of the blanking chute.

In some embodiments of the present invention, the method further comprises: the transfer bin is connected below the feeding chute, and a discharge hole is formed below and/or on the side surface of the transfer bin.

In some embodiments of the present invention, the annular space reaction structure is a double-layer structure surrounded by a plurality of porous plates; at least one of the inner and outer layers of the annular space reaction structure comprises: two or more porous plates having different porosities.

In some embodiments of the present invention, the annular space reaction structure is a double-layer structure surrounded by a plurality of porous plates; the porosity of the same pore plate is the same; the porosity of the pore plates adjacent in the vertical direction is the same; in the multiple pore plates on the same horizontal plane, compared with the pore plates close to the opening in the circumferential direction, the pore plates far away from the opening in the circumferential direction have high porosity, and the opening is an air inlet or an air outlet.

(III) advantageous effects

According to the above technical scheme, the utility model discloses annular space removes bed gas-solid reaction unit has one of them of following beneficial effect at least:

(1) the annular space reaction structure is adopted, an annular space cavity is formed in the annular space reaction structure to contain solid particles, and the whole equipment is simple in design, compact in structure, reasonable in space utilization, small in occupied area and convenient to install and use. In addition, the annular space reaction structure ensures that gas can contact solid particles in more directions in the annular space reaction structure, thereby avoiding the occurrence of reaction dead angles and ensuring the reaction uniformity. Especially, the spherical annular reaction structure has better effect because gas can contact reaction particles in all directions.

(2) On the basis of an annular space reaction structure, the following reaction device scheme is designed: cylindrical and spherical. For the cylindrical scheme, the scheme has compact structure and low cost; for the spherical scheme, the full-symmetry design is adopted, so that the occupied space is smaller, the uniformity of an air field is better, the stress is uniform, and the pressure-bearing capacity is excellent.

(3) For the cylindrical and spherical reaction devices, the following four types respectively extend: firstly, outward entering and outward exiting; secondly, inward feeding and inward discharging; thirdly, external in and external out; and fourthly, the mold is in-out type.

Wherein, for the types of the third and fourth, the structure is simple and the use is convenient.

Wherein, for the types of the first and the second, gas enters from the gas inlet cavity and is subjected to primary treatment through solid particles of the annular space cavity section corresponding to the gas inlet cavity; and then the solid particles passing through the annular space cavity section corresponding to the gas outlet cavity are subjected to secondary treatment, and the treatment effect of the gas is ensured by the two treatment processes.

(4) The vertical setting of annular space reaction structure relies on the gravity feeding of solid particle self, can save the operation expense, reduces the energy consumption.

(5) For the reaction devices of the first and second types, solid particles slide down from top to bottom, and firstly pass through the annular space cavity section corresponding to the gas outlet cavity to react with the pretreated gas; then, the gas which just enters is pretreated through the annular space cavity section corresponding to the gas inlet cavity; finally, the solid particles which fail firstly are quickly replaced, thereby achieving the purpose of fully utilizing the solid particles at different stages.

(6) Set up unified awl annular feeding storehouse in the top in annular space chamber, the top in the chamber that will circulate is sealed to the bottom in the annular feeding storehouse of awl of one side, the annular feeding storehouse top of awl sets up unified feed inlet of another side, the material gets into the back from the feed inlet, utilize the slope homodisperse of solid particle self gravity and awl annular feeding storehouse side to each position in annular space chamber, thereby only need a feed inlet, 1 fill is carried the material loading machine and can be realized the feeding, other equipment such as no valve, need not artifical homocline, thereby investment and manual work have been saved, the fault rate and operation cost have been reduced.

(7) Set up unified back taper unloading chute in the below of annular space chamber, this cyclic annular unloading chute of back taper seals the bottom that the chamber will circulate together with solid particle on the one hand, and the slope of this cyclic annular unloading chute of back taper side on the other hand collects the waste material automatically.

(8) Set up the transfer feed bin in back taper unloading chute below, set up the opening intercommunication to the transfer feed bin in unloading chute below, the solid particle that slides down from lower swift current spout directly gets into the transfer feed bin, flows from its discharge gate. The discharge port can be directly connected with a discharging machine without other equipment, thereby reducing the equipment investment and being convenient for field installation and operation.

(9) At least one of the inner layer and the outer layer of the annular space reaction structure is surrounded by pore plates with different porosities, the position of the annular space reaction structure opposite to the air inlet (or the air outlet) is taken as a starting point, the porosity of the pore plate close to the position is small, and the porosity of the pore plate far away from the position is large, so that the gas can uniformly pass through the annular space reaction structure in the circulation direction, the gas flow field is more uniform, the reaction is more sufficient, and the reaction efficiency is higher. The distance here means: a circumferential distance and/or an axial distance.

(10) The annular space reaction structure is in a cylindrical ring shape, the symmetrical axis is vertical to the ground, and the porosity of the same piece of the pore plate is set to be the same; the pore plates adjacent in the vertical direction are arranged to be the same; in a plurality of pore plates on the same horizontal plane, the pore plate circumferentially close to the air inlet (or the air outlet) has small porosity, and the pore plate circumferentially far from the air inlet (or the air outlet) has large porosity, so that the relationship between the uniformity of an air field and the cost of equipment is balanced as much as possible.

(10) At least one of the inner and outer layers of the annular space reaction structure is surrounded by pore plates with different porosities. If the porous sheet is a louver, the porosity is adjusted by: firstly, grid plate spacing; the proportion of straight edges and oblique edges of the grid plate; and the straight edge of the grid plate forms an acute angle with the ground. Furthermore, at least part of the grid plates are arranged to be adjustable in angle, so that the angle of the straight edges of the louver grid plates can be adjusted according to the effect, the relation between the effect and the consumption of solid particles is further balanced, and the required effect is achieved with the minimum cost.

(11) The inner layer of louver and the outer layer of louver are connected to form one horizontal layer capable of bearing solid grains independently. The shutter is connected with the shell through the T-shaped beam, so that the overall stability of the annular gap polygonal body is improved while the shutter is convenient to disassemble and assemble.

(12) The louver grille adopts a modular design, has high rigidity, is not easy to deform, is convenient to process and manufacture, improves the working efficiency and reduces the processing cost; the polygonal structure of the shutter combination is beneficial to absorbing deformation caused by temperature and prolonging the service life of equipment.

(13) At least one of the inner and outer layers of the annular space reaction structure is surrounded by pore plates with different porosities. If the porous sheet material is a porous sheet, for a porous sheet, the porosity is adjusted by: firstly, hole density; ② the size of single aperture.

(14) The bottom of the annular space reaction structure is supported from the ground by using an annular support, so that the shell load is reduced, and the overall stability of the annular space reaction structure is improved.

Drawings

FIG. 1 is a sectional view of a gas-solid reaction apparatus of an annular space moving bed according to a first embodiment of the present invention.

FIG. 2A is a sectional view of the gas-solid reaction apparatus of the annular moving bed shown in FIG. 1 taken along the plane A-A.

Fig. 2B is a sectional view of a gas-solid reaction device of an annular space moving bed according to another embodiment of the present invention.

FIG. 3 is a schematic view of a louver in the annular moving bed gas-solid reaction apparatus shown in FIG. 1.

FIG. 4 is a schematic view of a ring-shaped support in the annular moving bed gas-solid reaction apparatus shown in FIG. 1.

Fig. 5 is a sectional view of a gas-solid reaction device of an annular space moving bed according to a second embodiment of the present invention.

Fig. 6 is a sectional view of a gas-solid reaction device of an annular space moving bed according to a third embodiment of the present invention.

Fig. 7A is a cross-sectional view of a gas-solid reaction device of an annular space moving bed according to a fourth embodiment of the present invention.

FIG. 7B is a sectional view of the gas-solid reaction apparatus of the annular moving bed shown in FIG. 7A in the A-A direction.

Fig. 7C is a longitudinal sectional view of an annular gap moving bed gas-solid reaction device having a polygonal annular horizontal structure according to another embodiment of the present invention.

Fig. 8 is a sectional view of a gas-solid reaction device of an annular space moving bed according to a sixth embodiment of the present invention.

Fig. 9 is a sectional view of a gas-solid reaction device of an annular space moving bed according to a seventh embodiment of the present invention.

[ description of the main reference numerals in the drawings ] for the embodiments of the present invention

10. 10 ", 10'" -a housing; 11-a T-beam;

20. 20A, 20 ", 20'" -an annular space reaction structure;

21-28-louver; L1-L8-louver layer;

30. 30 ', 30 ", 30'" -a separator plate;

40-ring shaped support

50-conical annular feeding bin; 51-a feed inlet;

60-inverted cone-shaped feeding chute;

70-a transfer bin;

C_r、C_r″、C_r″′、C_r1、C_r2-an annular space cavity;

C_c、C_c′、C_c″、C_c"' -a circulation chamber;

C_in、C_in′、C_in″、C_in″′、C_in1、C_in2-an air intake chamber;

C_out、C_out′、C_out″、C_out″′、C_outl、C_out2-an outlet chamber;

H_in、H_in′、H_in″、H_in1、H_in2-an air inlet;

H_out、H_out′、H_out″、H_outl、H_out2-an air outlet.

Detailed Description

The utility model provides an annular gap removes bed gas-solid reaction unit, it utilizes annular gap chamber holding solid particle to reach the succinct, compact structure, the space of whole platform equipment design reasonable, installation convenient to use's purpose, and designed from three aspect on this basis:

firstly, designing a chamber to reasonably guide the gas to flow;

secondly, the feeding and discharging design is adopted to improve the convenience of feeding and discharging;

and thirdly, designing an air field in the chamber to improve the uniformity of the air field and improve the reaction efficiency.

Before describing the embodiments of the present invention in detail, it is necessary to explain some techniques and terms.

1. With respect to "gas", "solid particles" and "treatment"

As mentioned in the background, moving beds are widely used in the fields of energy processing, multiphase chemical reactions, material separation, flue gas purification, etc. Thus, the types of particles added to the moving bed and the types of treatment of the gas introduced by the particles are very numerous and include, but are not limited to, the following six types:

firstly, in the flue gas desulfurization in the environmental protection field, the gas introduced into the moving bed is 'flue gas'; the solid particles added in the moving bed are 'reaction particles' capable of reacting with sulfur compounds in the flue gas; the treatment of the flue gas is "reaction".

Secondly, in the denitration of the flue gas in the environmental protection field, the gas introduced into the moving bed is 'flue gas'; the solid particles added in the moving bed are 'catalyst particles' capable of catalyzing the reaction of the nitro compounds in the flue gas; the treatment of the flue gas is "catalytic".

Thirdly, in the flue gas dust removal in the environmental protection field, the gas introduced into the moving bed is 'flue gas'; the solid particles added in the moving bed are 'adsorption particles' capable of adsorbing dust in the flue gas, and are usually activated carbon particles; the treatment of the flue gas is "adsorption".

Fourthly, in the gas drying of the moving bed dryer, the gas introduced into the moving bed is 'wet gas'; the solid particles added in the moving bed are "desiccant particles" capable of adsorbing moisture in the wet gas; the treatment of the wet gas is "adsorption".

Fifthly, in the field of inorganic chemical industry, the gas introduced into the moving bed is 'reaction gas'; the solid particles added in the moving bed are 'catalyst particles' for catalyzing reaction gas to perform specific reaction to generate specific products; the treatment of the reactant gases is "catalytic".

Sixthly, in the field of organic chemical industry, the gas introduced into the moving bed is oil gas; the solid particles added in the moving bed are 'catalyst particles' capable of catalyzing oil gas to perform specific reaction; the treatment of hydrocarbons is "catalyzed".

It should be understood by those skilled in the art that although the embodiments of the present invention are described by taking the flue gas desulfurization and denitration as examples, the annular gas-solid reaction device of the present invention can be widely applied to the fields of gas drying, inorganic chemical industry, organic chemical industry, etc., as long as "gas" and "solid particles" are correspondingly adjusted.

2. About "Ring"

The utility model discloses an annular space reaction structure, its meaning is that the plane is gone to cut open this reactor, and the section is the annular.

First, the ring shape may be a circular ring, a polygonal ring, or another irregularly shaped ring.

Secondly, as for the overall appearance shape of the annular space reaction structure, it may be a cylindrical shape, a polygonal cylindrical shape, a spherical shape, or the like.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that these embodiments are provided so that this disclosure will satisfy applicable legal requirements, and that this disclosure may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein.

First embodiment (cylindrical in-out type)

In a first exemplary embodiment of the present invention, there is provided an annular moving bed gas-solid reaction apparatus for removing sulfur components from flue gas, so that solid particles are reaction particles that can react with sulfur compounds.

In the gas-solid reaction device of the annular space moving bed in the embodiment, the whole device is cylindrical, and the gas inlet and the gas outlet are both arranged outside the shell, so that the device of the type is called as a cylindrical gas-solid reaction device of the annular space moving bed with an external inlet and an external outlet. The nomenclature of the other embodiments is similar and will not be repeated.

FIG. 1 is a sectional view of a gas-solid reaction apparatus of an annular space moving bed according to a first embodiment of the present invention. FIG. 2A is a sectional view of the gas-solid reaction apparatus of the annular moving bed shown in FIG. 1 taken along the plane A-A. As shown in fig. 1 and fig. 2A, the gas-solid reaction device of the annular moving bed in this embodiment includes:

a housing 10;

an annular space reaction structure 20 fixed inside the shell and internally forming an annular space cavity C_rTo contain the reaction particles, the inner side of which forms a flow-through chamber C_c；

A partition 30 fixed between the shell and the annular space reaction structure and dividing the space between the shell and the annular space reaction structure into air inlet chambers C_inAnd an air outlet cavity C_out；

Air inlet H_inAnd a gas outlet H_outAnd the two ends of the shell are respectively provided with a gas inlet cavity and a gas outlet cavity.

In the embodiment, the reactor adopts an annular space design, and the whole equipment has the advantages of simple design, compact structure, small occupied area, convenience in installation and use and investment saving.

The details of the components of the gas-solid reaction apparatus of the annular moving bed of this embodiment are described below.

In this embodiment, the housing 10 is cylindrical, which is beneficial to the uniformity of the air fields of the air inlet cavity and the air outlet cavity. In addition, the cylindrical shell has good self rigidity, and a bearing mechanism can be reduced, so that the whole weight of the equipment is reduced.

It will be appreciated by those skilled in the art that the housing may be designed in other shapes besides cylindrical, such as regular polygonal, spherical, elliptical, etc., as long as it is capable of receiving the annular space reaction structure and forming a chamber therebetween.

Referring to fig. 1 and fig. 2A, the annular space reaction structure 20 is a regular octagonal cylindrical ring with inner and outer layers, and is specifically surrounded by axial multi-layer louvers (L1-L8, 21-28, etc.).

It will be appreciated by those skilled in the art that for larger scale reactors, a polygonal cylindrical shape with internal and external double layers surrounded by louvers is more appropriate; for a reactor with smaller scale, the inner and outer double-layer cylindrical rings or polygonal cylindrical rings can be directly surrounded by the pore plates. Fig. 2B is a sectional view of a gas-solid reaction device of an annular space moving bed according to another embodiment of the present invention. Wherein the inner and outer double layers of the annular space reaction structure 20A are directly enclosed by the porous plates.

Compared with a pore plate, the louver grille adopts a modular design, has high rigidity and is not easy to deform, is convenient to process and manufacture, improves the working efficiency and reduces the processing cost. In addition, the polygonal structure of the shutter combination is beneficial to absorbing deformation caused by temperature and prolonging the service life of equipment.

FIG. 3 is a schematic view of a louver in the annular moving bed gas-solid reaction apparatus shown in FIG. 1. As shown in fig. 3, the louver is made of a thin steel plate, which is bent or not bent, layer by layer, and is called as a grid plate, the straight edge of the grid plate has a certain included angle with the horizontal direction, and the straight section is arranged on the single edge, so that the rigidity of the grid plate is improved, and solid particles can be prevented from falling off.

Referring to fig. 1, the annular space reaction structure is arranged perpendicular to the ground and is formed by splicing a plurality of layers of louvers (L1-L8) in the axial direction. For each layer (one of L1-L8) in the axial direction, the inner layer of louvers and the outer layer of louvers are connected to form a layer which is integrated in the horizontal direction and can independently carry solid particles. The assembled shutter is connected with the shell through the T-shaped beam 11, so that the overall stability of the annular gap polygon body is improved while the assembly and disassembly are convenient.

It should be noted that, in this embodiment, the shell mainly has a positioning function and a supporting function for the annular space reaction structure. The annular space reaction structure is mainly supported by an annular bracket of the annular space reaction structure. FIG. 4 is a schematic view of a ring-shaped support in the annular moving bed gas-solid reaction apparatus shown in FIG. 1. Referring to fig. 1 and 4, the gas-solid reaction device of the annular moving bed further includes: attached to the annular support 40 below the annular space reaction structure. The support legs of the annular support 40 are fixed on the ground and support the annular space reaction structure, so that the shell load is reduced, and the overall stability of the annular space moving bed gas-solid reaction device is improved.

Referring to FIG. 1, an annular cavity C is formed inside the annular space reaction structure_rA circulation chamber C is formed at the inner side of the annular space reaction structure_c. The baffle 30 is a transverse baffle that is secured between the housing and the annular space reaction structure, thereby dividing the space between the housing and the annular space reaction structure into the inlet chamber C_inAnd an air outlet cavity C_out. An air inlet H is arranged on the shell at the outer sides of the air inlet cavity and the air outlet cavity_inAnd a gas outlet H_out。

It should be noted that although the space between the casing and the annular space reaction structure is equally divided into the gas inlet chamber C in this embodiment_inAnd an air outlet cavity C_outHowever, the present invention is not limited thereto. In other embodiments of the present invention, the air intake chamber C can be reasonably arranged according to the requirement_inAnd an air outlet cavity C_outVolume ratio of the two, for example: 2: 1, 1: 2, etc.

In order to balance the air fields in the air inlet cavity and the air outlet cavity as much as possible, in the embodiment, the air inlet H is arranged in the direction vertical to the ground_inArranged at the height 1/2 of the air inlet chamber, and an air outlet H_outAt the outlet chamber height 1/2.

When the gas-solid reaction device of the annular space moving bed works, the smoke passes through the air inlet H_inEnters the air inlet cavity C_inThe reaction liquid passes through the annular space cavity section corresponding to the air inlet cavity to carry out the first reaction and enters the circulation cavity C_c(ii) a Then the reaction liquid passes through the annular space cavity section corresponding to the gas outlet cavity to carry out secondary reaction, and enters the gas outlet cavity C_outFrom the gas outlet H_outAnd (4) discharging. Therefore, compared with the traditional moving bed gas-solid reaction device, the flue gas in the embodiment undergoes twice reactions, and the purification effect is ensured.

On the basis of the above scheme, the applicant also found that: because the air inlet and the air outlet can only be arranged at fixed positions on the shell, the air fields in the air inlet cavity and the air outlet cavity are not uniformly distributed, so that the purification effect is influenced, and the utilization rate of the reaction particles is not high.

In order to solve the problem, the utility model discloses in, the annular space reaction structure is enclosed by the inside and outside two-layer shutter, pore board or other types's pore board, in the pore board who constitutes the pore reactor, has two kinds of pore boards that the porosity is different at least to control the gas field in the cavity, promote purifying effect, improve reaction particle utilization ratio.

The porosity means a ratio of a pore area through which a gas can pass in one surface to the total area. For a unit area of porous sheet material, the greater the porosity, the easier the gas will pass through; the smaller the porosity, the less gas will pass through.

For a louver, it comprises a plurality of elongated holes. The porosity can be adjusted by the following factors:

grid plate spacing

The larger the spacing of the grid plates, the greater the porosity; the smaller the spacing of the grids, the smaller the porosity.

② the proportion of straight edge and bevel edge in the bent grid plate, abbreviated as straight-oblique proportion

The total width of the blade is not changed, and under the condition that the distance is not changed, the proportion of the straight edge is larger, and the porosity is smaller; the greater the proportion of hypotenuse, the greater the porosity.

Third, the angle of the acute angle formed by the straight edge of the grid plate and the ground, called the grid plate angle for short

The smaller the grid plate angle is, the larger the porosity is; the greater the louver angle, the less the porosity.

For a pore plate, which comprises a number of circular or rectangular or triangular pores, the porosity is adjusted by the pore size and the pore density. Specifically, the denser the pores, the larger the pore diameter, the greater the porosity; the more open the pores, the smaller the pore size, the smaller the porosity.

The utility model discloses in, the annular space reaction structure is enclosed by the different pore plate materials of porosity to air inlet (or gas outlet) just right annular space reaction structure position is the starting point, and the porosity of the pore plate material that is close apart from this position is little, and the porosity of the pore plate material far away from this position is big, thereby has guaranteed that gas evenly passes from the circulation direction, makes the air current field more even, and the reaction is more abundant, and reaction efficiency is higher. The distance here means: a circumferential distance and/or an axial distance. In other words, as long as take the different shutter of porosity to make the pore generator and adjust the gas field, no matter in circumference or axial, or circumference and axial, all be in the utility model discloses the within range that protects.

In practical engineering, it should be considered that manufacturing grid plates with different pitches and angles on the same louver increases cost, so the embodiment adopts the scheme that the pitches, angles and vertical-oblique proportions of the grid plates of the same louver are the same. In addition, referring to fig. 1, in the embodiment, the air inlet cavity corresponds to two layers of shutters, and the air inlet is disposed in the middle of the air inlet cavity, so that the porosity of two shutters axially connected up and down in the embodiment is set to be the same.

In this embodiment, for 8 louvers in the same layer in the pore cavity section corresponding to the air inlet cavity, the porosity thereof increases with the distance from the air inlet, that is, the following is satisfied:

φ₂₁＜φ₂₂＝φ₂₃＜φ₂₄＝φ₂₅＜φ₂₆＝φ₂₇＜φ₂₈

wherein phi is_2AThe porosity of the grid plate 2A is 1-8. Through the arrangement, the uniformity of the gas field is greatly improved, and meanwhile, the production cost is controlled as much as possible.

In addition, be different from the fixed setting of grid tray angle of shutter among the prior art, the utility model discloses still include: and the at least one grid plate angle adjusting mechanism is used for adjusting the acute angle formed by the straight edges of the grid plates of one or more shutters and the horizontal plane. When the flue gas purification device is in actual use, the flue gas at the gas outlet is monitored, and if the sulfur content of the flue gas is higher than a preset standard, the angle of the grid plate can be increased through the grid plate angle adjusting mechanism, so that the average path of the flue gas passing through reaction particles is increased, the space and time of adsorption and reaction are prolonged, and the purification effect is enhanced. Conversely, if the sulfur content is below a predetermined level, the cascade angle can be decreased by the cascade angle adjustment mechanism so that the average path of the flue gas through the reaction particles is decreased and the rate of passage of the flue gas is increased. By the above measures, flexibility of cost control is enhanced.

As mentioned above, in the present embodiment, the symmetry axis of the annular space reaction structure is perpendicular to the ground and is arranged in a central symmetry manner, which brings about two advantages:

1. the flue gas is firstly purified at the annular space cavity section corresponding to the gas inlet cavity for the first time, and then is purified at the annular space cavity section corresponding to the gas outlet cavity for the second time, and the purification effect is ensured in the two-time purification process.

2. Reaction particles in the annular space cavity C_rIn the process of moving, firstly, the pretreated flue gas passes through the annular space cavity section corresponding to the gas outlet cavity and reacts; then the flue gas which enters for the first time is pretreated through the annular space cavity section corresponding to the air inlet cavity. The reaction particles can react (or adsorb) with harmful substances in the smoke twice, so that the full utilization of the reaction particles is achieved.

3. The reaction particles slide down from top to bottom, and the reaction particles which fail first are quickly replaced, so that the updating iteration of the reaction particles is facilitated, and the aim of fully utilizing the solid particles at different stages is fulfilled.

4. The running cost can be saved by the gravity feeding of the reaction particles.

With reference to fig. 1, on the basis of the vertical arrangement of the annular space reaction structure, in order to facilitate the loading of the reaction particles, the embodiment further includes: a conical ring-shaped feeding bin 50 connected to the upper part of the annular space reaction structure, a feeding hole 51 arranged above the conical ring-shaped feeding bin, an annular space reaction structure connected to the lower part of the conical ring-shaped feeding bin, and an inner space and an annular space cavity C formed by the inner space of the conical ring-shaped feeding bin_rAre communicated with each other. For the conical ring-shaped feeding bin, one side of the conical ring-shaped feeding bin is provided with a flowing cavity C_cIs sealed at the upper part; on the other hand, after the reaction particles enter from the feed inlet, the reaction particles are uniformly dispersed to all directions of the annular cavity by the feed bin by utilizing the self gravity of the reaction particles and the self gradient of the conical ring, so that the feed inlet only needs 1 bucket lifting feeder, other equipment is not needed, manual material homogenizing is not needed, the investment is saved, andthe cost of operation.

With reference to fig. 1, on the basis of the vertical arrangement of the annular space reaction structure, the embodiment further includes: and the upper end of the inverted cone-shaped feeding chute 60 connected below the annular space reaction structure is connected with the outer layer of the annular space reaction structure. For the blanking chute, the lower part of the circulation cavity is sealed on one hand; on the other hand, after the reaction particles react with harmful components in the smoke for two times, the reaction particles are separated from the annular space cavity C_rAnd the waste falls down along the discharging chute 60, so that the waste is automatically collected.

With reference to fig. 1, on the basis of the above inverted conical feeding chute, the present embodiment further includes: and a transfer bin 70 connected below the inverted cone-shaped feeding chute. The waste material that slips down from the back taper unloading chute directly gets into the transfer feed bin to the discharge gate that from the transfer feed bin flows. The discharge port can be directly connected with a discharging machine without other equipment, thereby reducing the equipment investment and being convenient for field installation and operation.

On the basis of as above back taper unloading chute, this embodiment still includes: and the valve plate mechanism is fixed below the blanking chute and is controlled to extend out and retract so as to control the discharging speed of the blanking chute.

The above is the specific structure of the gas-solid reaction device of the annular space moving bed in this embodiment, and the working process thereof is described below based on the specific structure. Referring to fig. 1, in the present embodiment:

(1) circulation of reaction particles

The reaction particles can be continuously or discontinuously loaded from the upper feed inlet 51 according to the process requirements, slide down along the inclined plane of the cone-shaped annular feed bin based on the self gravity, and are uniformly dispersed to the annular cavity C_rThen via the annular space C_rThe material falls from the annular space cavity after moving downwards and sequentially passing through the annular space cavity section corresponding to the air outlet cavity and the annular space cavity section corresponding to the air inlet cavity, and then enters the transfer bin 70 along the inclined plane of the inverted cone-shaped blanking chute 60 so as to be discharged by the discharging machine;

(2) flue gas circulation

Flue gas passes through the gas inlet H_inAnd into the inlet chamber C_inThen, howeverThe back flue gas passes through the lower half section of the polygonal annular space cavity for one time, and enters the circulation cavity C after the reaction for one time_cAlong the circulation chamber C_cMoves from bottom to top, passes through the upper half section of the polygonal annular space cavity again to carry out secondary reaction, and then the flue gas reaches the gas outlet cavity C_outThrough the gas outlet H_outInto the exhaust system.

Besides the above mentioned advantages, the solution of the present embodiment has the advantages of simple structure, low manufacturing cost, simple maintenance, etc.

Therefore, the utility model discloses a gas-solid reaction unit of annular space moving bed that first embodiment is used for getting rid of sulphur composition in the flue gas introduces and finishes.

Second and third embodiments (cylindrical in-out type)

The present embodiment differs from the first embodiment in that: the air inlet cavity, the air outlet cavity and the circulation cavity are arranged.

In the gas-solid reaction device of the annular space moving bed in the embodiment, the whole device is cylindrical, and the gas inlet and the gas outlet are both arranged in the shell, so that the device of the type is called as a cylindrical gas-solid reaction device of the annular space moving bed with an inner inlet and an inner outlet.

Fig. 5 is a sectional view of a gas-solid reaction device of an annular space moving bed according to a second embodiment of the present invention. As shown in fig. 5, the gas-solid reaction device of the annular moving bed in this embodiment includes:

a housing 10;

an annular space reaction structure 20 fixed inside the shell and internally forming an annular space cavity C_rTo contain the reaction particles, the space between the reaction particles and the shell forms a circulation cavity C_c′；

A partition 30' fixed to the chamber inside the annular space reaction structure and dividing the space inside the annular space reaction structure into air inlet chambers C_in' and outlet chamber C_out′；

Air inlet H_in' and outlet H_out' and the two are respectively arranged in the air inlet cavity and the air outlet cavity and penetrate out of the shell through pipelines.

The following describes the respective components of the gas-solid reaction apparatus of the annular moving bed of this embodiment.

In this embodiment, the housing may be cylindrical, polygonal cylindrical, etc., as long as it can accommodate the annular space reaction structure and form a chamber therebetween.

In this embodiment, the annular space reaction structure 20 is a regular octagonal cylinder ring with two layers, specifically, it is surrounded by multiple axial layers of louvers.

In this embodiment, the annular space reaction structure is vertical to the ground and is formed by splicing a plurality of layers of shutters in the axial direction. For each layer in the axial direction, the inner layer of louver and the outer layer of louver are connected to form a layer which is integrated in the horizontal direction and can independently bear solid particles. The assembled shutter is connected with the shell through the T-shaped beam, so that the disassembly and the assembly are convenient, and the overall stability of the annular gap polygonal body is improved.

Referring to FIG. 5, an annular cavity C is formed inside the annular space reaction structure_rA circulation cavity C is formed at the outer side of the annular space reaction structure_c'. The partition 30' is a transverse partition fixed to the inside of the annular space reaction structure, thereby dividing the space inside the annular space reaction structure into the lower air inlet chamber C_in' and the upper gas outlet cavity C_out'. Corresponding air inlets H are arranged on the air inlet cavity and the air outlet cavity_in' and outlet H_out′。

In this embodiment, the air inlet H_in' is arranged at the lower half part of the air inlet cavity, and the air outlet H_outThe gas inlet cavity is arranged at the upper half part of the gas outlet cavity, the characteristic that the density of the flue gas is small and rises is utilized, the flue gas pressure at the lower part of the gas inlet cavity (gas outlet cavity) is ensured to be approximately the same as the flue gas pressure at the upper part of the gas inlet cavity (gas outlet cavity) as far as possible, and the purpose of improving the utilization efficiency of the solid particles is achieved.

The utility model discloses in, the annular space reaction structure is enclosed by the inner and outer two-layer shutter, pore plate or the pore panel of other types. Among the pore plates constituting the pore reactor, at least two kinds of pore plates having different porosities are present.

grid plate spacing

Similar to the embodiment, in the embodiment, the porosity of the 8 louvers in the same layer in the pore cavity section corresponding to the air inlet cavity increases with the distance from the air inlet.

With reference to fig. 5, on the basis of the vertical arrangement of the annular space reaction structure, the embodiment further includes: a conical ring-shaped feeding bin 50 connected to the upper part of the annular space reaction structure, a feeding hole 51 arranged above the conical ring-shaped feeding bin, an annular space reaction structure connected to the lower part of the conical ring-shaped feeding bin, and an inner space and an annular space cavity C formed by the inner space of the conical ring-shaped feeding bin_rAre communicated with each other. For the conical annular feeding bin, an air outlet cavity C is formed on one side_outThe upper part of the' is closed; on the other hand, reaction particle gets into the back from the feed inlet, utilizes reaction particle self gravity and the slope of awl ring form self by each position of feeding storehouse homodisperse to the annular space chamber to the feed inlet only need 1 fill carry the material loading machine can, need not other equipment, need not artifical mixing, saved investment and running cost.

With reference to fig. 5, on the basis of the vertical arrangement of the annular space reaction structure, the embodiment further includes: and the upper end of the inverted cone-shaped feeding chute 60 connected below the annular space reaction structure is connected with the outer layer of the annular space reaction structure. For the blanking chute, an air inlet cavity C is arranged on one side_inThe lower part of the' is closed; on the other hand, after the reaction particles react with harmful components in the smoke for two times, the reaction particles are separated from the annular space cavity C_rAnd the waste falls down along the discharging chute 60, so that the waste is automatically collected.

With reference to fig. 5, on the basis of the above inverted conical feeding chute, the present embodiment further includes: and a transfer bin 70 connected below the inverted cone-shaped feeding chute. The waste material that slips down from the back taper unloading chute directly gets into the transfer feed bin to the discharge gate that from the transfer feed bin flows. The discharge port can be directly connected with a discharging machine without other equipment, thereby reducing the equipment investment and being convenient for field installation and operation.

With reference to fig. 5, on the basis of the inverted conical feeding chute, the present embodiment further includes: and the valve plate mechanism is fixed below the blanking chute and is controlled to extend out and retract so as to control the discharging speed of the blanking chute.

In addition to the above descriptions, for the purpose of brief description, other technical features that can be applied to the same in the above first embodiment are all included herein, and the same descriptions are not repeated.

The above is the specific structure of the gas-solid reaction device of the annular space moving bed in this embodiment, and the working process thereof is described below based on the specific structure. In this embodiment:

(1) circulation of reaction particles

The reaction particle flow in this example is the same as in the first example and will not be repeated here.

(2) Flue gas circulation

Referring to fig. 6, in the present embodiment, the flue gas enters the gas inlet H through the pipeline_in', then enters the air intake chamber C_inThe smoke passes through the lower half section of the polygonal annular space cavity from inside to outside for one time, and enters the circulation cavity C after one-time reaction (or adsorption)_c', along the flow-through chamber C_cThe flue gas flows from bottom to top, passes through the upper half section of the polygonal annular cavity from outside to inside again to carry out secondary reaction (or adsorption), and then reaches the gas outlet cavity C_out', through the gas outlet H_out' enter the discharge system via a pipe.

Simulation experiments prove that compared with the first embodiment, the gas field distribution of the gas-solid reaction device of the annular space moving bed is more uniform, and the dependence on the shutter to adjust the gas field can be reduced. Specifically, the following beneficial effects are achieved:

1. the gas directly enters the inner cavity from the pipeline, the gas is uniformly diffused, the resistance is low, and the gas penetrates through the solid particle material layer more uniformly.

2. The gas inlet pipe passes through the shell and the granular layer annular space and directly reaches the central cavity, so that the gas has smaller resistance at the inlet. The gas is more uniformly diffused from the center to the outer circumferential direction; in a similar way, the gas flows from the back, from bottom to top, and enters the gas outlet cavity from the outside to the inside, and the whole process is relatively uniform. So that the process resistance of the entire gas in the apparatus is further reduced.

3. Because the structural gas is uniformly distributed in the equipment, the louver or the pore plate used by the annular gap can be designed into a specification without manually interfering the gas distribution by adjusting parameters such as the distance, the angle, the aperture ratio and the like of the grid plate. Thereby increasing simplicity of design and fabrication.

4. The air inlet and outlet pipeline can connect the inner and outer cylinders of the annular gap with the equipment shell, and the cross section of the air inlet and outlet pipeline of the equipment is large, so that the equipment can be naturally integrally connected, and the overall stability is improved.

Therefore, the utility model discloses the introduction of second embodiment annular space moving bed gas-solid reaction unit finishes.

Third and third embodiments (spherical structure)

The embodiment provides a gas-solid reaction device of an annular space moving bed for removing a nitro compound in smoke. The present embodiment differs from the first embodiment in that: the whole device is spherical, the shell is hollow spherical, and the annular space reaction structure is spherical.

Fig. 6 is a sectional view of a gas-solid reaction device of an annular space moving bed according to a third embodiment of the present invention. As shown in fig. 6, the gas-solid reaction device of the annular moving bed in this embodiment includes:

the shell 10' is in a hollow spherical shape;

an annular space reaction structure 20' arranged in the shell and in a spherical ring shape, an annular space cavity C for containing solid particles is formed inside the annular space reaction structure_rAn inside thereof forming a flow diverting cavity C_c″；

A partition 30' disposed between the housing and the annular space reaction structure, dividing the space between the housing and the annular space reaction structure into air inlet chambers C_in"and outlet chamber C_out″；

Air inlet H_inAnd outlet H_outAnd corresponds to the inlet and outlet chambers, respectively.

In this embodiment, the feed inlet sets up in the casing top and passes the casing through the charge-in pipeline and communicate to annular space reaction structure top, and the discharge gate sets up in the casing bottom and passes the casing through ejection of compact pipeline and communicate to annular space reaction structure below. Due to the self inclination of the annular space reaction structure, solid particles are introduced from the feeding hole, automatically fall after entering the annular space reaction cavity along the feeding pipeline and are discharged from the discharging hole through the discharging pipeline, a special feeding bin and the like are not needed to be arranged, the design is further simplified, and the cost is further improved.

In this embodiment, the baffle 30 "is horizontally disposed to equally divide the space between the shell and the annular space reaction structure into the lower air inlet chamber C_in"and upper outlet chamber C_out". Air inlet H_in"the bottom of the outside of the air intake chamber opened in the housing is preferably provided at the bottom of the housing, and the discharge duct passes through the air intake port H_in"is connected to the bottom of the annular cavity. Gas outlet H_out"open at the top of the outside of the outlet chamber on the housing, preferably at the top of the housing, the feed conduit passing through the outlet H_out"attached to the top of the annular space reaction structure. In the embodiment, the characteristics of small smoke density and automatic rising are utilized, the positions of the air inlet and the air outlet are reasonably arranged, and the smoke can rise and be purified by utilizing the characteristics of the smoke even if the smoke is less, so that the smoke quantity can be self-adapted.

In this embodiment, since the louvers are planar structures, which are not suitable for the inner and outer structures of the spherical bed, various porous plates are usually used to press the inner and outer layers of the annular space reaction structure. Among the pore plates constituting the pore reactor, at least two kinds of pore plates having different porosities exist.

In this embodiment, at least one of the inner and outer layers of the annular space reaction structure is surrounded by pore plates with different porosities, the position of the annular space reaction structure opposite to the gas inlet (or the gas outlet) is taken as a starting point, the porosity of the pore plate close to the starting point is small, and the porosity of the pore plate far from the starting point is large, so that gas can uniformly pass through the annular space reaction structure from the circulation direction, the gas flow field is more uniform, the reaction is more sufficient, and the reaction efficiency is higher.

For the purpose of brief description, other technical features that can be applied to the same in the first embodiment are all described herein, and the same description is not repeated.

It should be clear to those skilled in the art that, similarly to the second embodiment, if the inside of the annular gap reaction structure is divided into the air inlet cavity and the air outlet cavity by the partition board, the space between the annular gap reaction structure and the casing is used as the circulation cavity, and the air inlet and the air outlet are respectively arranged in the air inlet cavity and the air outlet cavity, the present invention can be implemented equally, and will not be described again here.

(1) circulation of reaction particles

The reaction particle flow in this example is similar to the example and will not be repeated here.

(2) Flue gas circulation

Referring to FIG. 6, in the present embodiment, the flue gas passes through the gas inlet H_inEnters the air inlet cavityC_inThen the flue gas passes through the annular space C once_rThe lower half section of the reactor enters the circulation cavity C after a catalytic reaction is carried out for one time under the action of catalyst particles to remove partial nitro compounds in the flue gas_c", along the circulation chamber C_c"the side wall moves from bottom to top and again outwardly through the annular space C_rThe upper half section of the flue gas is subjected to secondary catalytic reaction under the action of catalyst particles to remove the nitrogen compounds in the flue gas again, and then the flue gas reaches the gas outlet cavity C_outThrough the gas outlet H_out"into the exhaust system.

The spherical container has the advantages compared with other containers: the bearing capacity of the spherical tank is highest under the condition of the same wall thickness, the required wall thickness of the spherical container is only the same diameter under the condition of the same internal pressure, the required wall thickness of the spherical container is 1/2 which is the same as the wall thickness of the raw material circular container, the surface area of the spherical container is the smallest under the condition of the same volume, and 30-40% of steel is saved compared with the circular container generally due to the reasons of small wall thickness, small surface area and the like.

It should be noted that the "ball" of the present invention is a generalized ball, which includes not only a sphere in the geometric sense, but also an ellipsoid, and the sphere (similar to a football) spliced by the plane blocks is similar to a sphere, and the present invention can be implemented as well.

Therefore, the gas-solid reaction device of the annular space moving bed has the following advantages:

1. the spherical equipment is in a central symmetrical shape, so that the gas inlet and outlet route is more flexible, and the gas inlet and outlet are arranged at any position, so that the gas flow field distribution is more uniform.

2. When the gas passes through the spherical bed layer, the gas is dispersed and passes through a large area; that is, the reaction or adsorption process of the gas in the whole equipment has no turn-back and mutation, so the pressure drop is particularly low, thereby further reducing the energy consumption of the system.

3. The solid particle distributes evenly in the bed, does not have the blind spot, is favorable to solid particle discharge or circulation more, only need set up the feed inlet simultaneously in the casing top and pass the casing through the pipeline and communicate to annular space reaction structure top, set up the discharge gate in the casing bottom and pass the casing through the pipeline and communicate to annular space reaction structure bottom, need not set up extra feeding storehouse and transfer feed bin to the design has been simplified, the investment has been saved.

4. Under the condition that internal pressure is needed to increase reaction efficiency or increase reaction speed, the consumption of materials can be greatly reduced by using a spherical moving bed or a fixed bed, and the one-time investment cost is reduced; cylindrical devices would add significant weight to the device body, while rectangular devices would not be suitable for operation with high internal pressure.

5. Under the condition of equal treatment capacity, the occupied area of the spherical equipment is smaller; the whole structure is simple and compact, and the number of accessory equipment is small. The whole equipment has no wearing parts and low maintenance cost.

Therefore, the third embodiment of the utility model discloses the introduction of annular space moving bed gas-solid reaction unit finishes.

Fourth and fourth embodiments (horizontal structure)

In some environment-friendly application occasions, the diameter of the gas pipeline is larger, and the pipeline is longer due to arrangement conditions, so that an annular space moving bed can be arranged in the horizontal straight-section pipeline.

The utility model discloses the fourth embodiment provides a be suitable for the annular space of major diameter gas pipeline to remove bed gas-solid reaction unit. The present embodiment differs from the first embodiment in that: and (4) a horizontal structure.

Fig. 7A is a cross-sectional view of a gas-solid reaction device of an annular space moving bed according to a fourth embodiment of the present invention. FIG. 7B is a sectional view of the gas-solid reaction apparatus of the annular moving bed shown in FIG. 7A in the A-A direction. As shown in fig. 7A and fig. 7B, in the gas-solid reaction device with annular moving bed in the present embodiment, the housing 10 '″ and the annular reaction structure 20' ″ are both horizontally disposed, that is, the central axes of the housing and the annular reaction structure are both parallel to the ground. An annular cavity C is formed inside the annular reaction structure_r″′。

The inner side of the annular space cavity is provided with a longitudinal baffle 30', the direction of which is vertical to the horizontal direction, thereby dividing the inner space of the annular space reaction structure into an air inlet cavity C_in"' and gas outlet cavity C_out". One side of the air inlet cavity is provided with an air inletAnd one side of the air outlet cavity is provided with an air outlet. A circulation chamber C is formed between the shell and the annular space reactor_c". In the process, referring to fig. 7A and 7B, the flue gas enters the gas inlet chamber C from the left gas inlet_in' is firstly purified at the annular space cavity section corresponding to the air inlet cavity and then passes through the circulation cavity C_cThe secondary purification is carried out on the annular space cavity section corresponding to the gas outlet cavity and enters the gas outlet cavity C_outAnd finally discharged out of the reaction apparatus. The purification effect is ensured by the two purification processes.

A plurality of feed inlets are arranged in a single row along the axial direction right above the shell and are respectively connected to the annular space cavity C through feed pipes_r". Also, a plurality of discharge ports are arranged in a single row right below the shell, and the discharge ports are respectively connected to the annular space cavity C through discharge pipelines_r". During the process, the reaction particles are fed from a plurality of feed inlets simultaneously and enter the annular cavity C_rAfter the material is discharged, the material is gradually glided by the gravity of the material and is finally discharged from the discharge hole.

In the embodiment shown in fig. 7B, the annular space is circular, but the annular space can also be polygonal, so long as it is ensured that the reaction particles can slide down in the annular space by gravity, as shown in fig. 7C.

As will be understood by those skilled in the art, the gas-solid reaction device with annular space moving bed in horizontal structure in the present embodiment has the following advantages:

the method can be directly realized by using the gas pipeline, the diameter of the material section with the annular space is locally increased, equipment does not need to be additionally arranged, the occupied area is not additionally occupied, and the cost of equipment infrastructure is saved.

Secondly, gas enters from the axial direction and is discharged from the axial direction, and the gas flow is smoother. The volume of gas entering equipment from a pipeline is not changed suddenly in the prior design, so that certain pressure loss is caused.

And shutter or orifice plate with annular gap structure may be used in one specification without secondary gas distribution. The manufacture is simpler.

The gas flow can be combined in various ways such as external in and external out, internal in and internal out, internal in and external out and the like, and various forms can be flexibly selected according to actual conditions when different process requirements are met. The thickness and the length of the solid particle layer can be flexibly adjusted according to the site conditions, so that the appearance is attractive and simple; and the flexible adjustment of the structure does not increase the material cost and the gas flow resistance.

The upper part is fed in a single row with a plurality of ports, the lower part is discharged in a single row with a plurality of ports, and the replacement frequency of the materials can be flexibly operated according to the original process parameters so as to increase the overall operation flexibility of the equipment.

The whole device is arranged according to the normal direction of the connecting pipeline, so the appearance is neat and simple.

The equipment is arranged in the transverse pipeline, no equipment such as a protruding high tower and the like exists, the corresponding feeding and discharging system is directly arranged at the top and the bottom of the pipeline, no high-altitude operation exists in the using process of the equipment, and the safety is greatly improved.

Therefore, the utility model discloses the introduction of fourth embodiment annular space moving bed gas-solid reaction unit finishes.

Fifth and fifth embodiments (Cascade Structure)

The utility model discloses the embodiment provides a gas-solid reaction unit of annular gap removal bed. The present embodiment differs from the first embodiment in that: be provided with 2 horizontal outer baffles in the second space between casing and annular space reaction structure, divide into three cavity with the second space, the cavity of downside and top is as admitting air the chamber and giving vent to anger the chamber, sets up air inlet and gas outlet respectively, and the position in the middle of two outer baffles in the inboard first space of annular space reaction structure sets up an interior baffle again to be 2 cavities with first spatial separation.

As can be understood by those skilled in the art, the embodiment is equivalent to that the gas-solid reaction devices of the two embodiments I are cascaded in the longitudinal direction, and the gas inlet of the later stage is connected to the gas outlet of the former stage, so that the distance for the flue gas to flow through is increased, and the flue gas purification effect is further improved.

Similarly, in other embodiments of the present invention, a plurality of partition plates with different axial positions may be disposed inside and/or outside the annular space reaction structure, and a path through which the flue gas flows is designed, so that a similar effect can be achieved. The first to the fourth embodiments all have similar modifications and are within the protection scope of the present invention.

Therefore, the utility model discloses fifth embodiment annular space removes bed gas-solid reaction unit introduces and finishes.

Sixth and sixth embodiments (cylindrical external in and external out type)

The sixth embodiment of the utility model provides a gas-solid reaction unit of a circular gap moving bed. The present embodiment differs from the first embodiment in that: a partition plate is not arranged in a second space between the annular space reaction structure and the shell, and an air inlet is arranged on the shell; the air outlet is arranged in the first space at the inner side of the annular space reaction structure and is connected to the outside of the shell through a pipeline.

Fig. 8 is a sectional view of a gas-solid reaction device of an annular space moving bed according to a sixth embodiment of the present invention. As shown in FIG. 8, in this embodiment, the annular space reaction structure has an annular space C_r1. The second space between the shell and the annular space reaction structure is used as an air inlet cavity C_in1And an air inlet H is arranged on the shell_in1(ii) a The first space at the inner side of the annular space reaction structure is used as an air outlet cavity C_out1Air outlet H_out1Is arranged in the air outlet cavity and passes through the shell through a pipeline.

In the embodiment, the feeding and discharging structure of the solid particles is similar to that of the embodiment, and automatic feeding by using the weight of the solid particles can be realized.

It can be seen that the utility model discloses need not the baffle, as long as form the ring gap chamber and hold solid particle, can solve current moving bed design complicacy, the redundant problem of structure, realize advantages such as whole platform equipment design is succinct, compact structure, area are little, installation convenient to use.

Those skilled in the art will appreciate that the positions of the inlet chamber and the outlet chamber may be interchanged, i.e., the first space inside the annular space reaction structure serves as the inlet chamber, the second space between the housing and the annular space reaction structure serves as the outlet chamber, and the inlet and outlet are provided corresponding to the inlet chamber and the outlet chamber, to achieve a similar effect.

Seventh and seventh embodiments (spherical in-out type)

The utility model discloses the seventh embodiment provides a spherical annular gap removes bed gas-solid reaction unit. The present embodiment is different from the annular moving bed gas-solid reaction device shown in fig. 6 in that: a partition plate is not arranged in a second space between the shell and the annular space reaction structure, a first space on the inner side of the annular space reaction structure is set to be an air inlet cavity, and a second space between the annular space reaction structure and the shell is set to be an air outlet cavity.

Fig. 9 is a sectional view of a gas-solid reaction device of an annular space moving bed according to a seventh embodiment of the present invention. As shown in fig. 9, in this embodiment, the gas-solid reaction device of the annular moving bed is spherical as a whole, wherein the shell is hollow spherical, and the annular reaction structure is spherical. Wherein the annular space reaction structure has an annular space cavity C_r2. The first space at the inner side of the annular space reaction structure is used as an air inlet cavity C_in2An air inlet H is arranged at the center of the sphere_in2And is connected to the outside of the shell through a pipeline; the second space between the shell and the annular space reaction structure is used as an air outlet cavity C_out2Air outlets H are arranged at symmetrical positions on the shell_out2。

In the embodiment, the feeding and discharging structure of the solid particles is similar to that of the third embodiment, and the feeding hole is arranged at the top end of the shell and communicated to the upper part of the annular space cavity through the shell by a pipeline; the discharge port is arranged at the bottom end of the shell and communicated to the lower part of the annular space cavity through the shell by a pipeline, and the annular space cavity can be utilized to realize automatic feeding by utilizing the weight of solid particles.

It can be seen that the utility model discloses need not the baffle, form the ring gap chamber and hold solid particle, can solve current moving bed design complicacy, the redundant problem of structure, realize advantages such as whole platform equipment design is succinct, compact structure, area is little, installation convenient to use.

In addition, in this embodiment, directly admit air from the middle of the inboard, the outer side is two mouthful of gas outlets from top to bottom, is applicable to the condition that has certain scale tolerance more, but initial concentration of sulphide is not high again. Firstly, inlet gas can be quickly and uniformly diffused, and the reaction effect is ensured; secondly, the gas only penetrates through the solid particle layer once, which is equivalent to that the resistance in the equipment is only half of the original resistance; thirdly, the gas passes through the solid particles once, but the solid particles can react with the solid particles twice from top to bottom, so that the utilization rate of the gas is improved.

It will be appreciated by those skilled in the art that the positions of the inlet and outlet chambers are actually interchangeable, i.e. the space between the housing and the annular space reaction structure acts as the inlet chamber and the space inside the annular space reaction structure acts as the outlet chamber, and a similar effect is achieved.

It should be particularly noted that, for the spherical annular moving bed gas-solid reaction device, the symmetry of the device can be fully utilized, the gas inlet (or the gas outlet) is arranged at the center of the sphere, and the gas outlet (or the gas inlet) is arranged on the shell in a central symmetry manner, so that the uniformity of the gas field in the cavity can be further promoted, and the reaction effect can be improved.

In summary, seven embodiments of the present invention have been described in detail with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Furthermore, the above definitions of the various elements and methods are not limited to the particular structures, shapes or arrangements of parts mentioned in the examples, which may be easily modified or substituted by one of ordinary skill in the art, for example:

(1) the shape of the shell and the annular space reaction structure can also be other shapes;

(2) the field of application of the gas-solid reaction device of the annular moving bed is not limited to the above-mentioned fields, the gas to be fed is not limited to the flue gas as in the above embodiment, and the solid particles to be charged into the annular reaction structure are not limited to the reaction particles or the catalyst particles.

From the above description, the person skilled in the art should clearly understand the gas-solid reaction device of the annular gap moving bed of the present invention.

To sum up, the utility model provides a gas-solid reaction unit of annular gap removal bed, its overall design is succinct, compact, can improve the utilization efficiency of solid particle and gaseous treatment effect, can conveniently advance, the ejection of compact to the solid particle, realizes economic benefits's maximize, has extremely strong practical value and better popularization and application prospect.

It should also be noted that directional terms, such as "upper", "lower", "front", "rear", "left", "right", etc., used in the embodiments are only directions referring to the drawings, and are not intended to limit the protection scope of the present invention. And the shapes and sizes of the respective components in the drawings do not reflect actual sizes and proportions, but merely illustrate the contents of the embodiments of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.

Furthermore, the word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various aspects. However, the method of the present invention should not be interpreted as reflecting an intention that: the invention as claimed requires more features than are expressly recited in each claim.

The above-mentioned embodiments are detailed descriptions of the objects, technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the embodiments of the present invention, and are not intended to limit the present invention, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A gas-solid reaction device of a cylindrical annular space moving bed is characterized by comprising:

the shell is in a vertically arranged cylindrical shape;

the annular space reaction structure arranged in the shell is cylindrical, and an annular space cavity for containing solid particles is formed in the annular space reaction structure.

2. The annular moving bed gas-solid reaction device according to claim 1, wherein the inner side of the annular reaction structure forms a first space and a second space is formed between the inner side of the annular reaction structure and the shell;

the gas-solid reaction device of the annular moving bed further comprises: the partition plate is arranged in one of the first space and the second space, the partition plate divides the space into an air inlet cavity and an air outlet cavity, and the other one of the first space and the second space is used as a circulating cavity; wherein, correspond air inlet chamber and play the air cavity and set up air inlet and gas outlet respectively.

3. The annular moving bed gas-solid reaction device according to claim 2, wherein the first space is a circulation chamber;

the partition board is a transverse partition board which divides the second space into an air inlet cavity and an air outlet cavity; the air inlet and the air outlet are respectively arranged on the corresponding shell at the outer sides of the air inlet cavity and the air outlet cavity.

4. The annular moving bed gas-solid reaction device according to claim 1, wherein the feed inlet and the discharge outlet of the annular reaction structure are respectively arranged above and below the annular cavity.

5. The annular moving bed gas-solid reaction device according to claim 4, further comprising:

the inner side of the conical annular feeding bin is used for sealing the upper part of the circulation cavity, the inner space of the conical annular feeding bin is communicated with the annular space cavity, and the upper part of the conical annular feeding bin is provided with the feeding hole.

6. The annular moving bed gas-solid reaction device according to claim 4, further comprising:

a feed chute connected below the annular space reaction structure, connected to an outer layer of the annular space reaction structure and forming a downward slope.

7. The annular moving bed gas-solid reaction device according to claim 6, further comprising:

and the valve plate mechanism is fixed below the blanking chute and is controlled to extend out and retract so as to control the discharging speed of the blanking chute.

8. The annular moving bed gas-solid reaction device according to claim 6, further comprising:

the transfer bin is connected below the discharging chute, and the discharging port is arranged below and/or on the side surface of the transfer bin.

9. The annular moving bed gas-solid reaction device according to any one of claims 1 to 8, wherein the annular space reaction structure is a double-layer structure surrounded by a plurality of pore plates;

at least one of the inner and outer layers of the annular space reaction structure comprises: two or more porous plates having different porosities.

10. The annular moving bed gas-solid reaction device according to claim 9, wherein the annular reaction structure is a double-layer structure surrounded by a plurality of pore plates;

the porosity of the same pore plate is the same;

the porosity of the pore plates adjacent in the vertical direction is the same;

in a plurality of pore plates on the same horizontal plane, compared with the pore plates which are close to the opening in the circumferential direction, the pore plates which are far from the opening in the circumferential direction have large porosity, and the opening is an air inlet or an air outlet.