CN106895690A - A kind of vertical high-temperature environment-friendly coal drying oven - Google Patents
A kind of vertical high-temperature environment-friendly coal drying oven Download PDFInfo
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- CN106895690A CN106895690A CN201710189497.XA CN201710189497A CN106895690A CN 106895690 A CN106895690 A CN 106895690A CN 201710189497 A CN201710189497 A CN 201710189497A CN 106895690 A CN106895690 A CN 106895690A
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- coal
- drying
- casing
- air distribution
- drying furnace
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
- F26B17/122—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the material moving through a cross-flow of drying gas; the drying enclosure, e.g. shaft, consisting of substantially vertical, perforated walls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The present invention relates to a kind of drying furnace for formed coal, it is included with superposed cloth material mouth (3), air distribution plate (11) below cloth material mouth, the space between two adjacent air distribution plates (11) defines casing (4), it is characterised in that：Casing (4) is with the horizontal about 20 45 ° of oblique angle.Drying oven of the invention is distributed its material more uniform due to being provided with multiple cloth material mouths simultaneously, and casing is designed for tilting, and gravitational pressure is effectively reduced during moulded coal is moved downward, so as to reduce frictional force so that dust yield is significantly reduced.Other wind-distributing pipe road and the special construction design of wind distributing hole so that moulded coal baked strength becomes uniform sequential.Blanking narrows the raising at place, effectively solves the problems, such as that discharging speed is inconsistent, solves the problems, such as buildup.The solution of dust and buildup problem so that the possibility caught fire is substantially reduced, and then furnace temperature design can be risen to 200 DEG C.
Description
Technical field
The present invention relates to a kind of drying furnace for formed coal, more particularly to a kind of vertical moulded coal dedicated drying stove, more particularly
It is related to a kind of vertical high-temperature environment-friendly coal dedicated drying stove.Moreover, it relates to the drying furnace for formed coal is dried in moulded coal
In purposes, and moulded coal furnace drying method.
Background technology
At present, under the background that Jing-jin-ji region administers atmospheric haze, the popularization of China's Briquette Industry, especially coal briquette for civillan use is just
Carry out in high gear.Hebei province's plan in 2017 promotes moulded coal amount and is about 8,000,000 tons or so.With the continuous hair of Briquette Industry
Exhibition, the continuous foundation of production line necessarily improves the important directions of yield using drying furnace for formed coal.
Prior art is usually using Horizontal drying furnace and tower stove.
Existing Horizontal drying furnace has the drawback that：(1) air quantity is small, only the m of 2-10 ten thousand3/ h heat smokes；(2) hot blast along
Shuttled between gas producing formation, coal is low to the absorption efficiency of heat, and drying efficiency is low；(3) heat smoke is walked along moulded coal flow table face,
The skin drying degree of briquette prod is high, and internal briquette prod dries low degree, causes product quality uneven；(4) temperature in stove
Degree is high, mechanical lubrication low degree, and chain or turnover panel carry moulded coal pressure greatly, be easily caused chain or guipure wanders off and is broken, quilt
Compel parking；(5) due in stove bearing capacity it is limited, guipure and turnover panel are difficult to widen, and can not improve rotating speed, overall yield compared with
It is low, it is mostly 5-15t/h.
In view of the shortcoming of Horizontal drying furnace mentioned above, vertical coal drying oven is by its distinctive yield is big, investment
The advantage such as the low, thermal efficiency is high, is promoted and applies in increasing enterprise.The drying furnace for formed coal of China's application at present is about
There are 400 or so, wherein tower stove there are more than 250 platforms, it is contemplated that future still there are the 500 Yu Jia moulded coals enterprises to select vertical drying
Stove.
In general, the heat needed for drying moulded coal is constant, but temperature is difficult to improve always in operating process, therefore
Wind Volume is forced to use to be dried, therefore easily there are many situations in operation in tower stove：(1) ignition issues are dashed forward
Go out, once temperature is higher than 100 DEG C, then easily lead to internal temperature accumulation, cause firing accident to take place frequently；(2) dust problem is tight
Weight, during moulded coal is moved downward, flour dust overflow phenomenon is very serious caused by phase mutual friction；(3) dust problem is easily caused
Oven body part air channel is blocked, and causes cloth wind uneven, and product moisture content height differs greatly, and wet type coal is in motion process
In it is frangible and exacerbate the problem of dust, and had a strong impact on yield；(4) briquette prod drying is uneven so that enterprise must not
Drying time is not improved, while yield is influenceed, the possibility caught fire is also significantly increased；(5) dust problem causes production
The environmental aspect of factory building significantly deteriorates.
Therefore, the research and development of efficient, environmentally friendly, large-tonnage moulded coal special vertical drying oven is increasingly taken seriously.
The research and development of such drying oven, can fully alleviate that current coal briquette for civillan use production line output is low, efficiency is low, working condition is disliked
The situation that bad, firing accident takes place frequently, its development and application is the important directions of future development.
Prior art has proposed a series of drying ovens：
CN201620211471.1 discloses a kind of vertical intermittent heat exchange drying oven, the furnace interior heat transfer medium and type
Coal is not directly contacted with, and passes through indirect heat exchange and dried, and flue gas is by lower from above being conveyed, and flue-gas temperature is controllable higher.
CN201620074649.2 discloses a kind of vertical direct heat transfer drying oven, and different from traditional drying oven, inside sets
Put similar to the tower air distribution plate of multiple filling layers, reduced the abrasion caused in moulded coal Machine Movement Process, flue-gas temperature compared with
It is low.
CN201320476298.4 discloses a kind of vertical circular drying oven, and it is internal to be provided with helical structure, under making it
Material mode has significant advantage.
CN201220031892.8 discloses a kind of anti-drying oven that catches fire of italic, and drying oven inner mold coal channel is inclination
Shape, its product discharge device is that flow controls roller, the discharge velocity of controllable type product of coal, it is to avoid buildup.The patent
Drying oven is still present moulded coal and is easily stuck between roller and feed bin, so as to the problem for causing motor overload or moulded coal to be crushed.Additionally,
The moulded coal passage and supply layer of the drying oven are designed side by side, and flue gas is not contacted with each other with moulded coal, belongs to indirect heat exchange type, is changed
The thermal efficiency is low.The yield of the drying oven is relatively low simultaneously.Additionally, the patent needs to use flow to control roller to carry out discharge, make to set
It is standby to become complicated and be difficult to repair, power and equipment cost are also add in addition.
CN200820049249.1 discloses a kind of drying oven of Sloping Hearth, and similar to carbonizing apparatus, its discharge passes through bottom
The gradient in portion is automatically moved, and cloth wind mode is also more special.
CN200620068442.0 discloses a kind of tower stove, and its internal cloth has divided multilayer, is respectively provided with tiltedly
Body and vertical air distribution plate, marker method are about 90-120 DEG C close to tradition drying oven, flue-gas temperature.
The drying oven of above-mentioned prior art still suffers from that drying temperature is low, yields poorly, buildup, exist catch fire may and thermal effect
The low problem of rate.
The content of the invention
It is an object of the invention to provide a kind of novel vertical high-temperature environmental-protection moulded coal drying oven, it can overcome above-mentioned prior art
The shortcoming of drying oven.In particular it relates to a kind of novel vertical high-temperature environmental-protection moulded coal drying oven, it is mainly reflected in body of heater
Structure has significant difference, significantly improves operation operating mode, including improve moulded coal motion mode, moulded coal pressure-bearing, drying temperature
The technologies such as degree, air quantity, pan feeding mode, solve material movement accumulation, dust is produced, drying time is long, waste heat recovery volume substantially
Greatly, uneven, the key technology bottleneck of the vertical and bedroom kiln such as body of heater volume is big is dried.
The cloth material mouth of drying oven of the present invention is set to multiple cloth material mouths, preferably 2-3 cloth material mouth.With the one of prior art
Individual material mouthful is different with auxiliary materials distributor, and material just has been split into many parts before pan feeding, has effectively contained cloth
Uneven problem so that moulded coal piled up in body of heater and be distributed it is relatively uniform, to a certain extent cause material pressure
It is evenly distributed, it is broken caused by accumulation so as to reduce moulded coal, more ensure that speed of the material in moving downward is uniform.
In drying oven of the invention, exhaust gas recycling tube is provided with and cloth tube between on the outside of cloth tube, often saves casing
Waste gas is set and takes out mouth, by dehydrating unit, the hot blast of 60-80% is back to hot-blast stove and is matched somebody with somebody again the waste gas that suction opeing is extracted out
Wind, to realize reclaiming heat.
Only about 1.0-1.5 meters of the box height of drying oven of the present invention, compared to the drying oven that in the market box height is 3 meters,
The moulded coal load-bearing reduction of present invention drying furnace bottom.Meanwhile, casing be with the horizontal about 2045 ° of italics at angle, by moulded coal it
Between pressure change is all undertaken to undertake part component by casing by moulded coal so that the weight that bottom half moulded coal bears is entered
One step reduction about 30-66%.Compared to the drying oven of in the market, the load-bearing of drying oven bottom of the present invention moulded coal is substantially reduced, effectively
Reduce the frictional force of material movement, so as to reduce Dust Capacity, and then reduce possibility of catching fire, additionally effectively change
It has been apt to the moulded coal caused by the material accumulation that pressure is produced to crush and discharging inequality.
The wind-distributing pipe road of drying oven of the present invention devises three passages, and is all triangle, the purpose is to utilize shape
The blast and air quantity inside wind-distributing pipe are have adjusted, cloth air quantity and pressure in different wind distributing hole positions is more have adjusted.Air feed pipe
Bottom air quantity and pressure are big so that the briquette prod heating degree highest of same level, and air feed pipe top air quantity and pressure are low so that
Same level briquette prod heating degree is minimum.
The air distribution plate of drying oven of the present invention is designed and causes that top is rectangle, and 1/3-1/2 is being calculated as from bottom corresponding to casing
Height at, the air distribution plate is narrowed in the form of two inverted trapezoidals, thus in the bottom of air distribution plate, the air distribution plate and furnace wall it
Between, between two inverted trapezoidals for narrowing formed triangle wind-distributing pipe road.Preferably, the shape of described two inverted trapezoidals is identical.
Air quantity is larger, but cloth air port is less, makes its wind for air distribution plate bottom (corresponding at highly 1/2 from the bottom of inverted trapezoidal to inverted trapezoidal)
Speed is significantly improved, so as to make it into during moulded coal storehouse with kinetic energy higher.Air distribution plate middle part (corresponds to inverted trapezoidal height 1/2
Place to the top of inverted trapezoidal) air quantity is smaller, and cloth air port is more, more air quantity is entered moulded coal storehouse, properly increases heat radiation strong
Degree.The top rectangular upper portion of air distribution plate (correspond to) is not provided with wind distributing hole, it is therefore an objective to reduce air quantity and blast so that middle part and
The hot blast of bottom is diffused to the relatively low top of pressure.For the moulded coal of bottom half, flue-gas temperature is 180-200
DEG C, temperature of charge is 140-160 DEG C, and for the moulded coal in the middle part of casing, flue-gas temperature is 140-180 DEG C, and temperature of charge is
100-140 DEG C, flue-gas temperature is 100-140 DEG C for the moulded coal on casing top, but temperature of charge is only 60-100 DEG C.Always
The layout again of temperature gradient field is realized on body so that the heating of moulded coal is evenly, it is to avoid hot localised points, thus reduced
Fiery possibility, more realizes the cascade utilization of heat so that the thermal efficiency is improved, and shortens the heat time of moulded coal, and reduction is caught fire can
Can property.
In drying oven of the present invention, moulded coal is moved downward, but casing top is provided with large volume of exhaust gas recycling tube, always
On body be negative pressure, gas flow direction generally towards pressure it is low direction motion, therefore hot blast by bottom adverse current upwards along
The low exhaust gas recycling tube motion of pressure.This design reduces the air quantity of discharging opening, effectively improves the airborne dust work of discharging opening
Condition, it is often more important that waste gas can effectively be put together and be recycled to hot-blast stove recycling, reduce energy consumption.
In the present invention, " larger volume " is the drying oven with prior art for the drying oven of prior art
Compare, the waste gas storage room of drying oven of the present invention and waste gas recovery pipe volume 10-80% high, 15-60% preferably high are more preferably high
20-40%.
Additionally, the structure arrangement that drying oven of the present invention passes through wind-distributing pipe road and feed opening, make the position that feed opening is narrowed to
Upper raising is to (from lower box meter) at casing 1/3-1/2, and this position top moulded coal amount is less, and pressure is relatively low, can significantly drop
Low its buildup and get stuck.Although making material down going channel narrow step by step, box side closing in angle and XZ planes (wherein X-axis
It is the longitudinal direction of drying oven, Y-axis is the transverse direction of drying oven, and Z axis are vertical for drying oven) into 15-25 ° of angle, it is preferably 15-22 °, more excellent
Select 16-20 °, 30 ° of angles at such as 19 ° of angle, far smaller than prior-art devices, it is to avoid material movement path is different in size,
Can ensure that material uniformly slips downwards row, and feed opening closes up with XZ planes into 5-15 °, such as it is 3-15 °, preferably 5-12 °, more excellent
Select 8-12 °, such as 10 ° of angle, that is to say, that material movement is to herein, and passage is spacious all the better, more avoid bottom buildup
Problem.The problem of feed opening material bridge formation is more avoided, so as to avoid buildup on the whole and material downstream rate is inconsistent
Problem.Blanking velocity is consistent, and it is uneven to advantageously account for material drying, further improve the partial material residence time it is long and then
Cause ignition issues.And without using extra blanking device so that operation is simpler, and cost is lower.
Drying oven of the invention is distributed its material more uniform due to being provided with multiple cloth material mouths simultaneously, and casing is
Tilting is designed, and gravitational pressure is effectively reduced during moulded coal is moved downward, so as to reduce frictional force so that dust
Yield is significantly reduced.The special construction design of other wind-distributing pipe road and wind distributing hole so that moulded coal baked strength becomes uniformly to have
Sequence.Blanking narrows the raising at place, effectively solves the problems, such as that discharging speed is inconsistent, solves the problems, such as buildup.Dust and product
The solution of material problem so that the possibility caught fire is substantially reduced, and then furnace temperature design can be risen to 200 DEG C.According to laboratory
As a result, drying time is 1h, 90-120 DEG C, the drying kiln that drying time is 4h, saving of time 75% compared in the market.Also
It is to say 4 times of an output increased for casing.Further, since there is provided waste gas circulation is reclaimed, overall air quantity is reduced, also will be remaining
Heat is reclaimed, and the thermal efficiency can improve 20%.
Steel plate materialses used in drying oven of the present invention are had no particular limits, it can be any commercially available steel plate,
Boiler plate is recommended, the thickness is 8mm.
Moreover, it relates to purposes of the drying furnace for formed coal in moulded coal drying, and use baking of the invention
The method of dry baking oven dry type coal.In the method for the invention, drying temperature can be 150-200 DEG C, preferably 160-200 DEG C, more excellent
Select 170-200 DEG C, even more preferably most preferably 180-200 DEG C, 190-200 DEG C.
Brief description of the drawings
Fig. 1 is the perspective view of the drying oven of one embodiment of the invention；
Fig. 2 is the front view of the drying oven of one embodiment of the invention；
Fig. 3 is the side sectional view of the drying oven of one embodiment of the invention；
Fig. 4 is the schematic diagram of the air distribution plate of the drying oven of one embodiment of the invention.
In the various figures, each reference has following implication：
1. waste gas recovery mouthful
2. waste gas takes out mouth
3. cloth material mouth
4. casing
5. cloth air port
6. wind-distributing pipe road
7. feed opening
8. oscillating plate
9. spring
10. base
11. air distribution plates
12. furnace walls
Specifically describe
The specific embodiment of drying oven of the present invention is specifically described below with reference to accompanying drawing.It is pointed out that this is to implement
Scheme is given merely for the sake of the more clearly elaboration purpose of the present invention, it is impossible to is considered as and is limited the scope of the present invention.
Reference picture 1, drying oven of the invention has superposed cloth material mouth 3, the air distribution plate 11 below cloth material mouth,
Space between two adjacent air distribution plates defines casing 4.The moulded coal to be dried fed by cloth material mouth 3 enters in casing 4.
The top of drying oven of the present invention is provided with waste gas space and the exhaust gas recycling tube of larger space, is as general as negative pressure, therefore gas
Flow direction generally towards pressure it is low direction motion, hot blast by bottom adverse current upwards along the low spatial movement of pressure.This
One design causes that heat is all absorbed by wet type coal, realizes the utilization step by step of heat, while reducing the air quantity of discharging opening, has
The airborne dust operating mode for improving discharging opening of effect, it is often more important that waste gas can effectively be put together and hot-blast stove is recycled to and returned
Receive and utilize, reduce energy consumption.
Cloth air port 5 is provided with air distribution plate.The shape in cloth air port 5 has no particular limits, and for example it can be slit-shaped, hole
Shape etc..The arrangement in cloth air port 5 has no particular limits, for example, horizontal arrangement, vertical arrangement, it is horizontal and vertical it is staggered,
Or incline arrangement etc..
When moulded coal is dried, hot blast is blown into casing 4 by wind-distributing pipe road 6 through cloth air port 5, so as to dry moulded coal therein.
After moulded coal is dried, moulded coal is discharged via feed opening 7.
Additionally, the often section casing of drying oven of the invention sets waste gas takes out mouth 2, the waste gas of extraction is taken out mouth 2 and is passed through through waste gas
Dehydrating unit, the hot blast of 60-80% is back to hot-blast stove carries out air distribution again, to reclaim heat.
Reference picture 2, the casing 4 of drying oven of the present invention with horizontal plane (i.e. X/Y plane in Fig. 1) into about 20-45 ° of oblique angle,
So that the weight that bottom half moulded coal bears further reduces about 30-66%, drying oven compared to existing technology, bottom-type
Coal load-bearing is substantially reduced, and is effectively reduced the frictional force of material movement, so as to reduce Dust Capacity, is effectively improved because of pressure
The discharging that the material accumulation that power is produced is caused is uneven.
Reference picture 3, the cloth material mouth 3 of drying oven of the present invention is set to multiple cloth material mouths, and preferably 2-3 cloth material mouth is (wherein
Fig. 3 illustrate only 3 cloth material mouths).It is different from an existing material mouthful and auxiliary materials distributor, material before pan feeding just
Through being divided into many parts, the uneven problem of cloth is effectively contained, so that moulded coal is uniformly dried.
From figure 3, it can be seen that drying oven of the present invention makes feed opening 7 by wind-distributing pipe road 6 and the structure arrangement of feed opening 7
The position narrowed is improved to (from lower box meter) at the about 1/3-1/2 of casing 4 upwards, and this position top moulded coal amount is less,
Pressure is relatively low, can significantly reduce its buildup and the phenomenon for getting stuck.Although material down going channel narrows step by step, lower box side plate with
Into 15-25 ° of angle, preferably 15-22 °, more preferably 16-20 °, such as 19 ° of angle, closing in angle is far smaller than prior art to XZ planes
30 ° of angles of device, it is to avoid material movement path is different in size, can ensure that material uniformly slips downwards row, and feed opening closes up
With XZ planes into 5-15 °, such as 3-15 °, preferably 5-12 °, more preferably 8-12 °, such as 10 ° of angle, that is to say, that material movement
To herein, passage is spacious all the better, more avoids the problem of bottom buildup.The problem of feed opening material bridge formation is more avoided, from
And buildup and the inconsistent problem of material downstream rate are avoided on the whole.Blanking velocity is consistent, advantageously accounts for material drying
Uneven, further the improvement partial material residence time is long and then causes ignition issues.And without using extra blanking
Device so that operation is simpler, and cost is lower.
Fig. 4 is the schematic diagram of drying oven air distribution plate 11 of the present invention.The air distribution plate 11 of drying oven of the present invention is designed and causes top
It is rectangle, is calculated as at the height of 1/3-1/2 from bottom corresponding to casing 4, the air distribution plate 11 is received in the form of two inverted trapezoidals
It is narrow, thus in the bottom of air distribution plate, three cloth are formed between the air distribution plate 11 and furnace wall 12, between two inverted trapezoidals for narrowing
Air pipe line 6.Preferably, the shape of described two inverted trapezoidals is identical.Bottom (corresponding to the bottom of inverted trapezoidal) wind of air distribution plate 11
Amount is larger, but cloth air port is less, significantly improves its wind speed, increased when it enters moulded coal storehouse with kinetic energy higher.Middle part
(corresponding to the top of inverted trapezoidal), air quantity was smaller, and cloth air port is more, more air quantity is entered moulded coal storehouse, properly increased heat radiation
Intensity.Top (corresponding to the rectangular upper portion of air distribution plate) is not provided with wind distributing hole, it is therefore an objective to air quantity and blast are reduced, so that middle part
It is diffused to the relatively low top of pressure with the hot blast of bottom.
Embodiment
In embodiments below, following drying furnace for formed coal of the invention is used：Highly for 1.5 meters, with three charging apertures,
Casing with the horizontal 45 ° oblique angle, the position narrowed of box side is improved to the 1/3 of casing 4 upwards, box side closes up
Angle is in 19 ° of angles with XZ planes, and it is in 10 ° of angles that feed opening closes up with XZ planes.
In contrast, the use of height it is 3 meters, only with a charging aperture, casing and horizontal plane, side plate casing is narrowed
Position be located at the 1/2 of casing 4, closing in angle and XZ planes are in 19 degree angles, and feed opening closes up with XZ planes in 30 degree of angles
Commercially available drying furnace for formed coal.
Moulded coal to be dried is separately added into drying furnace for formed coal of the invention and commercially available drying furnace for formed coal, is found in this hair
In bright drying furnace for formed coal, drying temperature can up to 200 DEG C, and drying time at such a temperature is 1h.In contrast,
Drying temperature highest in commercially available moulded coal drying can only rise to 120 DEG C, and drying time at such a temperature is 4h.
As can be seen here, compared with commercially available drying furnace for formed coal, it is greatly improved moulded coal using drying furnace for formed coal of the invention and dries
Dry temperature, so as to shorten drying time, improves efficiency.
Furthermore, it was found that compared with commercially available drying furnace for formed coal is used, using drying furnace for formed coal of the invention so that Dust Capacity subtracts
About 60-80% is lacked.
As can be seen here, when using drying furnace for formed coal of the invention, furnace temperature is greatly improved, shortens drying time, and make
Obtain Dust Capacity to greatly reduce, so that the possibility caught fire is substantially reduced.
In particular it relates to following aspect：
1. a kind of drying furnace for formed coal, it is included with superposed cloth material mouth (3), the air distribution plate below cloth material mouth
(11), the space between two adjacent air distribution plates (11) defines casing (4), it is characterised in that：Casing (4) and horizontal plane
Into about 20-45 ° of oblique angle.
2. the drying furnace for formed coal as described in the 1st, it is characterised in that：It is being calculated as 1/3-1/2's from bottom corresponding to casing 4
Highly locate, air distribution plate (11) is narrowed in the form of two inverted trapezoidals, thus in the bottom of air distribution plate, in the air distribution plate (11) and stove
The wind-distributing pipe road (6) of triangle is formed between wall (12), between two inverted trapezoidals for narrowing.
3. the drying furnace for formed coal as described in the 1st or 2, it is characterised in that：The bottom air quantity of air distribution plate (11) is larger, but cloth
Air port is less；Middle part air quantity is smaller, but cloth air port is more；Top is not provided with wind distributing hole.
4. the drying furnace for formed coal as any one of 1-3, it is characterised in that：Box side closing in angle and XZ planes
Into 15-25 ° of angle, and feed opening closes up and XZ planes into 5-15 ° of angle.
5. the drying furnace for formed coal as any one of 1-4, it is characterised in that：Often section casing (4) of the drying oven
It is provided with waste gas and takes out mouth (2), the waste gas of extraction takes out mouth (2) by dehydrating unit through waste gas, and the hot blast of 60-80% is back to hot blast
Stove carries out air distribution again.
6. the drying furnace for formed coal as any one of 1-5, it is characterised in that：Cloth material mouth (3) is set to multiple clothes
Mouthful, preferably 2-3.
7. the drying furnace for formed coal as any one of 1-6, it is characterised in that：Casing (4) height of the drying oven
For about 1.0-1.5 meters；Waste gas space and the exhaust gas recycling tube of larger space are set on casing (4) top, it is as general as negative pressure.
8. the drying furnace for formed coal as any one of 1-7 moulded coal drying in purposes.
9. it is a kind of dry moulded coal method, wherein using the drying furnace for formed coal as any one of 1-8.
10. the method as described in the 9th, wherein drying temperature are 150-200 DEG C, more preferably preferably 160-200 DEG C, 170-
200 DEG C, even more preferably most preferably 180-200 DEG C, 190-200 DEG C.
Claims (10)
1. a kind of drying furnace for formed coal, it is included with superposed cloth material mouth (3), the air distribution plate below cloth material mouth
(11), the space between two adjacent air distribution plates (11) defines casing (4), it is characterised in that：Casing (4) and horizontal plane
Into about 20-45 ° of oblique angle.
2. drying furnace for formed coal as claimed in claim 1, it is characterised in that：It is being calculated as 1/3-1/2's from bottom corresponding to casing 4
Highly locate, air distribution plate (11) is narrowed in the form of two inverted trapezoidals, thus in the bottom of air distribution plate, in the air distribution plate (11) and stove
The wind-distributing pipe road (6) of triangle is formed between wall (12), between two inverted trapezoidals for narrowing.
3. drying furnace for formed coal as claimed in claim 1 or 2, it is characterised in that：The bottom air quantity of air distribution plate (11) is larger, but cloth
Air port is less；Middle part air quantity is smaller, but cloth air port is more；Top is not provided with wind distributing hole.
4. the drying furnace for formed coal as any one of claim 1-3, it is characterised in that：Box side closing in angle is put down with XZ
Face is into 15-25 ° of angle, and feed opening closes up and XZ planes into 5-15 ° of angle.
5. the drying furnace for formed coal as any one of claim 1-4, it is characterised in that：The often section casing of the drying oven
(4) it is provided with waste gas and takes out mouth (2), the waste gas of extraction takes out mouth (2) by dehydrating unit through waste gas, and the hot blast of 60-80% is back to
Hot-blast stove carries out air distribution again.
6. the drying furnace for formed coal as any one of claim 1-5, it is characterised in that：Cloth material mouth (3) is set to multiple cloth
Material mouth, preferably 2-3.
7. the drying furnace for formed coal as any one of claim 1-6, it is characterised in that：The casing (4) of the drying oven is high
Degree is for about 1.0-1.5 meters；Waste gas space and the exhaust gas recycling tube of larger space are set on casing (4) top, it is as general as bearing
Pressure.
8. the drying furnace for formed coal as any one of claim 1-7 moulded coal drying in purposes.
9. it is a kind of dry moulded coal method, wherein using the drying furnace for formed coal as any one of claim 1-8.
10. method as claimed in claim 9, wherein drying temperature are 150-200 DEG C, more preferably preferably 160-200 DEG C, 170-
200 DEG C, even more preferably most preferably 180-200 DEG C, 190-200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710189497.XA CN106895690A (en) | 2017-03-27 | 2017-03-27 | A kind of vertical high-temperature environment-friendly coal drying oven |
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| CN111504046A (en) * | 2019-01-30 | 2020-08-07 | 新疆八一钢铁股份有限公司 | Hot flue gas drying device for storage bin |
| CN112812870A (en) * | 2021-01-06 | 2021-05-18 | 刘明锐 | Coal slime solidification upgrading process and device thereof |
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| CN112812870A (en) * | 2021-01-06 | 2021-05-18 | 刘明锐 | Coal slime solidification upgrading process and device thereof |
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Application publication date: 20170627 |