CN219510817U - Integrated silicon-containing waste gas treatment device - Google Patents
Integrated silicon-containing waste gas treatment device Download PDFInfo
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- CN219510817U CN219510817U CN202320179287.3U CN202320179287U CN219510817U CN 219510817 U CN219510817 U CN 219510817U CN 202320179287 U CN202320179287 U CN 202320179287U CN 219510817 U CN219510817 U CN 219510817U
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Abstract
The utility model discloses an integrated silicon-containing waste gas treatment device, which comprises an outer frame, wherein the left side of the outer frame is provided with a waste gas combustion chamber, the top of the waste gas combustion chamber is connected with a burner, and the waste gas combustion chamber is connected with a waste gas cracking chamber through a heat storage fire barrier wall; the waste gas pyrolysis chamber is connected with the high-temperature dust collection chamber through a high-temperature flue gas outlet, the high-temperature dust collection chamber is connected with a purified flue gas chamber at the upper part through a high Wen Lvxin fixed on the isolation pore plate, and the purified flue gas chamber is connected with a smoke exhaust induced draft fan through a convection heat exchange component. The waste gas of lithium battery liquid injection is treated by the device of the utility model, and the organic matters and dust are discharged up to the standard, and each unit is compact and reasonable in arrangement, and the occupied area is more than 1/2 smaller than that of the existing device.
Description
Technical Field
The utility model relates to the field of waste gas treatment equipment, in particular to an integrated silicon-containing waste gas treatment device.
Background
A great deal of waste gas needs to be treated in the production process of the lithium battery, for example, the main components of the waste gas for injecting the electrolyte of the lithium battery are electrolyte diluent, carbonate organic matters, trimethyl fluorosilane and the like, and the waste gas for injecting the electrolyte is subjected to high-temperature incineration treatment to crack the organic matters to generate CO 2 And H 2 O, trimethyl fluorosilane reacts at high temperature to form silica. At present, the tail gas of the liquid injection waste gas is often purified by adopting a mode of burning and heat energy recovery. In order to solve the problem of blockage of a heat energy recovery device, the prior art often adopts tubular heat exchange equipment to avoid silica dust duplug, but the equipment is very bulky. Aiming at the problems, the integrated silicon-containing waste gas treatment device is developed corresponding to the lithium battery industry, and the reduction of the occupied area of equipment while ensuring the standard emission of the treated tail gas is particularly important.
Disclosure of Invention
The utility model aims to: aiming at the defects and shortcomings of the prior art, the utility model provides the integrated silicon-containing waste gas treatment device, organic matters and dust are discharged after the waste gas of the lithium battery injection liquid is treated by the device, and each unit is compact and reasonable in arrangement, and the occupied area is smaller than that of the prior device by more than 1/2.
The technical scheme is as follows: the utility model relates to an integrated silicon-containing waste gas treatment device, which is characterized in that: the device comprises an outer frame, wherein an exhaust gas combustion chamber is arranged on the left side of the outer frame, the top of the exhaust gas combustion chamber is connected with a burner, and the exhaust gas combustion chamber is connected with an exhaust gas cracking chamber through a heat storage fire barrier; the waste gas pyrolysis chamber is connected with the high-temperature dust collection chamber through a high-temperature flue gas outlet, the high-temperature dust collection chamber is connected with a purified flue gas chamber at the upper part through a high Wen Lvxin fixed on the isolation pore plate, and the purified flue gas chamber is connected with a smoke exhaust induced draft fan through a convection heat exchange assembly.
The side wall, the middle partition wall and the top wall of the waste gas combustion chamber adopt casting materials or aluminum silicate module structures; the burner is arranged at the corner of the L-shaped waste gas combustion chamber, and the burner is orthogonal to the flow direction of waste gas entering from the high-temperature waste gas inlet.
More than two heat storage fire-blocking walls are arranged at the outlet of the waste gas combustion chamber, and the heat storage fire-blocking walls are of an arch structure.
Wherein, the waste gas pyrolysis chamber be located L type waste gas combustion chamber right side, the upper right side of waste gas pyrolysis chamber is equipped with high temperature flue gas export.
Wherein the high-temperature dust collection chamber is of an aluminum silicate inner heat preservation structure, and the lower part of the high-temperature dust collection chamber is provided with an ash accumulation hopper; and a back blowing device is arranged in the purified smoke chamber and is connected with an externally hung air supply device.
Wherein the smoke exhaust induced draft fan is positioned on the right side of the treatment device; the high-temperature exhaust gas inlet at the upper part of the purifying flue gas chamber is provided with an exhaust gas fan, and the exhaust gas fan is positioned at the bottom of the treatment device.
The heat convection assembly is of a plate structure formed by integral die pressing, baffling circulation is formed inside the heat convection assembly through corrugated coupling, the extending direction of the corrugations is consistent with the direction of high-temperature smoke, the heights of the corrugations are 2-14 mm and are symmetrically arranged left and right, a plurality of round or needle-shaped concave-convex points which play roles in turbulence and self-supporting are distributed on two sides of the corrugations, and the heights of the corrugations are less than or equal to the heights of the concave-convex points.
Wherein, the high Wen Lvxin is an acid-base resistant hard surface filter.
Wherein, the side surface of the purified smoke chamber is provided with an air supplementing air door with an automatic air distribution and uniform distribution function.
The method comprises the steps of further heating waste gas preheated by a convection heat exchange component in a waste gas combustion chamber through a burner to reach a cracking temperature, and sequentially enabling generated high-temperature flue gas to pass through an L-shaped waste gas combustion chamber, an arched heat storage fire baffle wall, a waste gas cracking chamber and the convection heat exchange component, wherein low-temperature flue gas enters a chimney through a smoke exhaust induced draft fan and is discharged; the exhaust gas fan at the bottom sends exhaust gas into the convection heat exchange assembly, and the flow of the exhaust gas is opposite to that of hot flue gas, cold and hot media form a countercurrent flow mode, and the cold and hot media enter the exhaust gas combustion chamber from a high-temperature exhaust gas inlet at the upper part of the purified flue gas chamber.
The beneficial effects are that: compared with the prior art, the utility model has the following remarkable advantages: the waste gas of the lithium battery liquid injection is treated by the device, the organic matters and dust are discharged after reaching standards, and each unit is compact and reasonable in arrangement, and compared with the existing device, the waste gas of the lithium battery liquid injection occupies more than 1/2 of the floor area, so that the waste gas meets the actual situation of land shortage of the existing lithium battery factory. The high-temperature dust removal unit adopts an acid and alkali resistant hard surface filter, can bear high temperature and acid and alkali impact, and ensures the stable and reliable operation of the downstream heat energy recovery unit. The downstream heat energy recovery unit adopts a die pressing plate with a special structure, and the inside of the downstream heat energy recovery unit forms baffling circulation through corrugated coupling, so that waste heat recovery is realized to the greatest extent, high-temperature flue gas with the temperature of more than 800 ℃ can be born, and the heat exchange area per unit volume is 3 times of that of the tubular assembly, so that the heat exchange assembly further compresses the volume. The whole system adopts forward design idea development, can realize environmental protection and energy conservation, quality improvement and synergy in the waste gas treatment process, accords with the planning layout of national construction resource conservation type and environment-friendly society, and has huge economic effect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
in the figure, 1 is an outer frame; 2 is an exhaust gas combustion chamber; 3 is a heat storage fire-blocking wall; 4 is an exhaust gas cracking chamber; 5 is a high-temperature flue gas outlet; 6 is a high-temperature dust removal collecting chamber; 7 is an ash accumulation bucket; 8 is an exhaust fan; 9 is a smoke exhaust induced draft fan; 10 is a convective heat transfer assembly; 11 is high Wen Lvxin; 12 is a purified flue gas chamber; 13 is a wind supplementing air door; 14 is a high temperature exhaust gas inlet; 15 is a burner.
Detailed Description
The technical scheme of the utility model is further described below with reference to the accompanying drawings and the specific embodiments.
The integrated silicon-containing waste gas treatment device comprises an outer frame 1, wherein a waste gas combustion chamber 2 is arranged on the left side of the outer frame 1, the top of the waste gas combustion chamber 2 is connected with a burner 15, and the waste gas combustion chamber 2 is connected with a waste gas cracking chamber 4 through a heat storage fire barrier wall 3; the waste gas cracking chamber 4 is connected with the high-temperature dust collection chamber 6 through the high-temperature flue gas outlet 5, the high-temperature dust collection chamber 6 is connected with the purifying flue gas chamber 12 at the upper part through the high Wen Lvxin fixed on the isolation pore plate, and the purifying flue gas chamber 12 is connected with the smoke exhaust induced draft fan 9 through the convection heat exchange assembly 10.
The waste gas combustion chamber 2 is of an L-shaped vertical structure, and side walls, middle partition walls and top walls of the waste gas combustion chamber 2 are of castable or aluminum silicate module structures; the burner 15 is provided at a corner of the L-shaped exhaust gas combustion chamber 2, the burner 15 being orthogonal to the flow direction of the exhaust gas entering the high temperature exhaust gas inlet 14. More than two heat storage fire-blocking walls 3 are arranged at the outlet of the waste gas combustion chamber 2, and the heat storage fire-blocking walls 3 are of an arch structure. The waste gas pyrolysis chamber 4 is located on the right side of the L-shaped waste gas combustion chamber 2, and a high-temperature flue gas outlet 5 is formed in the upper right side of the waste gas pyrolysis chamber 4. The waste gas is fully and uniformly mixed with the flame of the burner 15 when the flame angle is folded, the combustion temperature is raised to 750-800 ℃, a plurality of arched door openings are arranged at the bottom outlet of the waste gas combustion chamber 2 by airflow, and a porous heat storage fire baffle wall 3 is arranged in the door openings. The upper part of the arched door opening plays a role in bearing the partition wall, porous heat accumulating bricks are placed in the door opening, and the aperture is not less than 9mm. The flue gas passing through the porous heat storage wall 3 enters the waste gas cracking chamber 4 to further decompose organic components in the waste gas, and the temperature of the waste gas cracking chamber 4 is ensured to be not lower than 750 ℃ through the adjustment of the load of the burner 15, so that the high-temperature effective residence time of the waste gas in the combustion chamber and the cracking chamber is ensured. And the turbulent flow of the flue gas can be promoted by the folded flame angle of the L-shaped waste gas cracking chamber 4 and the arched door opening fire-blocking wall at the bottom, and the waste gas cracking rate can reach more than 99.9% by forward design according to the principle of 3T.
Wherein the high-temperature dust collection chamber 6 is an aluminum silicate internal heat insulation structure, and the lower part of the high-temperature dust collection chamber 6 is an ash accumulation hopper 7; the inside of the purified smoke chamber 12 is provided with a back-blowing device which is connected with an externally hung air supply device and is a back-blowing flushing pipe. The high temperature filter 11 is a hard surface filter with acid and alkali resistance. The silicon-containing flue gas after pyrolysis enters the dust removal unit through a high-temperature flue gas outlet 5 arranged at the upper right side of the waste gas pyrolysis chamber 4. The high-temperature dust removing unit is of an aluminum silicate inner heat insulation structure, the lower part of the high-temperature dust removing unit is of a conical ash collecting hopper 7, the whole dust removing unit is divided into an upper part and a lower part through a middle isolation pore plate and a high Wen Lvxin, the lower part of the high-temperature dust removing unit is a high-temperature dust removing collecting chamber 6 which is not purified, the upper part of the high-temperature dust removing unit is a purified flue gas chamber 12, the high Wen Lvxin adopts an acid and alkali resistant hard surface filter which is fixed on a filter element fixing plate on the upper part of the dust removing unit, and the fixing plate plays an isolating role on a dust containing area and a clean area.
The dust-containing high-temperature flue gas enters a high-temperature dust removal collecting chamber 6 and passes through the filter element from the outer surface to the inner surface under the action of an induced draft fan. Dust particles are blocked on the outer surface of the filter element, and clean gas enters the interior of the filter element and is discharged to the purified flue gas chamber 12 at the upper part of the filter element. As the dust of the filter element is accumulated and thicker, the pressure difference between the inside and the outside of the filter is larger; when the pressure drop reaches the design pressure drop, the filter starts a back-flushing system, and the compressed air provided by the external air supply device is utilized to reversely spray the filter element through a back-flushing pipe arranged on each height Wen Lvxin to remove dust. The instantaneous reverse airflow and the air pressure brought by the instantaneous reverse airflow can remove dust adsorbed on the outer surface of the filter element, and the dust falls into the ash accumulation hopper 7 under the action of gravity after being separated.
Wherein, the convection heat exchange assembly 10 is a plate structure formed by integral mould pressing, the inside of the convection heat exchange assembly 10 forms baffling circulation through corrugated coupling, the extending direction of W-shaped corrugations is consistent with the direction of high-temperature smoke, the heights of the corrugations are 2 mm-14 mm and are symmetrically arranged left and right, a plurality of round or needle-shaped concave-convex points which play roles in turbulence and self-supporting are distributed on two sides of the corrugations, and the heights of the corrugations are less than or equal to the heights of the concave-convex points. The purified flue gas enters the convection heat exchange assembly 10 at the rear end, and the convection heat exchange assembly is of a plate type structure, is formed by integrally welding after the heat exchange plates are molded, and forms baffling circulation inside the heat exchange plates through corrugated coupling. The extending direction of the W-shaped corrugation is consistent with the direction of the high-temperature flue gas, the height of the corrugation is 2 mm-14 mm, the corrugation is symmetrically arranged left and right, a plurality of round or needle-shaped concave-convex points are distributed on two sides of the corrugation, and the functions of turbulence and self-supporting are achieved. The height of the corrugation is not larger than the height of the round concave-convex points.
Wherein, the side surface of the purified smoke chamber 12 is provided with an air supplementing air door 13 with an automatic air distribution and uniform distribution function. The smoke exhaust induced draft fan 9 is positioned on the right side of the treatment device; the high temperature exhaust gas inlet 14 is provided with an exhaust gas fan 8, and the exhaust gas fan 8 is positioned at the bottom of the treatment device. The side of the purified smoke chamber 12 is provided with an overhaul hole of the automatic air supplementing air door 13, so that cold air protection equipment can be properly leaked into when the equipment is abnormal in operation, and the height Wen Lvxin can be overhauled when the equipment is stopped. The smoke exhaust induced draft fan 9 is positioned on the right side of the equipment and is interlocked with the negative pressure of the hearth during operation, and the waste gas blower is positioned at the bottom of the equipment and is interlocked with the negative pressure of the waste gas pipeline, so that the whole system is ensured to be in a negative pressure operation state. The burner is interlocked with the temperature of the waste gas combustion chamber 2 and the temperature of the waste gas cracking chamber 4, and the effective residence time of the high-temperature cracking of the waste gas is prolonged.
When the device is used, the waste gas preheated by the convection heat exchange assembly 10 is further heated in the waste gas combustion chamber 2 through the burner 15 to reach the cracking temperature, the generated high-temperature smoke sequentially passes through the L-shaped waste gas combustion chamber 2, the arched heat storage fire baffle wall 3, the waste gas cracking chamber 4 and the convection heat exchange assembly 10, and the low-temperature smoke enters a chimney through the smoke exhaust induced draft fan 9 to be discharged; the exhaust fan 8 at the bottom feeds exhaust gas into the exhaust gas combustion chamber 2 from the high-temperature exhaust gas inlet 14 at the upper part of the purified flue gas chamber 12 in a countercurrent flow mode of the cold and hot medium in the convection heat exchange assembly 10 opposite to the flow of the hot flue gas.
The waste gas combustion chamber 2 is arranged into an L-shaped vertical structure, the side walls, the middle partition wall and the top wall adopt pouring materials or aluminum silicate module structures, and the burner 15 is arranged at the L-shaped corner and is orthogonal to the flow direction of the waste gas entering from the high-temperature waste gas inlet 14. The lower outlet of the waste gas combustion chamber 2 is provided with a plurality of arched heat accumulation fire-blocking walls 3. After the VOCs are combusted and pyrolyzed at high temperature, the VOCs sequentially pass through an L-shaped waste gas combustion chamber 2, an arched heat storage fire barrier wall 3 and a waste gas pyrolysis chamber 4, and in the process, components such as a diluent, carbonates, trimethylfluorosilane and the like in the waste gas of the lithium battery injection are pyrolyzed into CO 2 ，H 2 O and SiO 2 . The dust-containing flue gas enters the high-temperature dust-removing collecting chamber 6 through the high-temperature flue gas outlet 5 arranged above the side of the waste gas cracking chamber 4. The high-temperature dust collection chamber 6 is of an aluminum silicate inner heat insulation structure, the lower part is a conical ash accumulation hopper 7, a purified smoke chamber 12 is arranged at the upper part of the height Wen Lvxin through a middle isolation pore plate, a back-blowing flushing pipe is arranged in the purified smoke chamber 12,the back blowing device is connected with the external air supply device. The high temperature filter element 11 is a hard surface filter with acid and alkali resistance, and can resist 1200 ℃ at maximum. The dust-collecting device is fixed on a filter element fixing plate at the upper part of the dust-collecting unit, and the fixing plate plays a role in isolating a dust-containing area from a clean area. After entering the high-temperature flue gas dust removal collection chamber 6, the silicon-containing high-temperature flue gas passes through the high Wen Lvxin from the outer surface to the inner surface under the action of an induced draft fan. The dust particles are blocked on the outer surface of the height Wen Lvxin and the cleaned gas enters the interior of the height Wen Lvxin and is then discharged into the clean flue gas chamber 12 above the filter element. As the dust of the filter element is accumulated and thicker, the pressure difference between the dust-containing area and the clean area is larger and larger; when the pressure drop reaches the designed pressure drop, a back blowing system is started, compressed air provided by an external air supply device is utilized to reversely spray the height Wen Lvxin through a back blowing flushing pipe arranged on each height Wen Lvxin, and the instant reverse air flow and the air pressure brought by the instant reverse air flow can remove dust adsorbed on the outer surface of the height Wen Lvxin, and the dust falls into the dust accumulation hopper 7 under the action of gravity after being separated. The purified flue gas enters the convection heat exchange assembly 10 at the rear end, and the convection heat exchange assembly is of a plate type structure, adopts heat exchange plates arranged in parallel, is formed by integrally welding after the heat exchange plates are molded, and forms a baffling circulation channel through corrugated coupling inside the heat exchange plates. The low-temperature flue gas after heat recovery is discharged through a smoke exhaust induced draft fan 9 arranged on the right side of the equipment.
Claims (9)
1. Integral type contains silicon exhaust treatment device, its characterized in that: the device comprises an outer frame (1), wherein an exhaust gas combustion chamber (2) is arranged on the left side of the outer frame (1), the top of the exhaust gas combustion chamber (2) is connected with a burner (15), and the exhaust gas combustion chamber (2) is connected with an exhaust gas cracking chamber (4) through a heat storage fire barrier wall (3); the waste gas pyrolysis chamber (4) is connected with the high-temperature dust collection chamber (6) through the high-temperature flue gas outlet (5), the high-temperature dust collection chamber (6) is connected with the purifying flue gas chamber (12) on the upper part through the high Wen Lvxin (11) fixed on the isolation pore plate, and the purifying flue gas chamber (12) is connected with the smoke exhaust induced draft fan (9) through the convection heat exchange component (10).
2. The integrated silicon-containing exhaust gas treatment device of claim 1, wherein: the waste gas combustion chamber (2) is of an L-shaped vertical structure, and side walls, middle partition walls and top walls of the waste gas combustion chamber (2) are of casting materials or aluminum silicate module structures; the burner (15) is arranged at the corner of the L-shaped waste gas combustion chamber (2).
3. The integrated silicon-containing exhaust gas treatment device of claim 1, wherein: more than two heat storage fire-blocking walls (3) are arranged at the outlet of the waste gas combustion chamber (2), and the heat storage fire-blocking walls (3) are of an arch structure.
4. The integrated silicon-containing exhaust gas treatment device of claim 2, wherein: the waste gas cracking chamber (4) is positioned on the right side of the L-shaped waste gas combustion chamber (2), and a high-temperature flue gas outlet (5) is arranged at the upper right side of the waste gas cracking chamber (4).
5. The integrated silicon-containing exhaust gas treatment device of claim 1, wherein: the high-temperature dust collection chamber (6) is an aluminum silicate internal heat insulation structure, and the lower part of the high-temperature dust collection chamber (6) is an ash accumulation hopper (7); the inside of the smoke purifying chamber (12) is provided with a back blowing device which is connected with an externally hung air supply device.
6. The integrated silicon-containing exhaust gas treatment device of claim 1, wherein: the smoke exhaust induced draft fan (9) is positioned on the right side of the treatment device; the high-temperature exhaust gas inlet (14) at the upper part of the purifying flue gas chamber (12) is provided with an exhaust gas fan (8), and the exhaust gas fan (8) is positioned at the bottom of the treatment device.
7. The integrated silicon-containing exhaust gas treatment device of claim 1, wherein: the convection heat exchange assembly (10) is of a plate type structure, baffling circulation is formed inside the convection heat exchange assembly (10) through corrugated coupling, the extending direction of the corrugations is consistent with the direction of high-temperature smoke, the heights of the corrugations are 2-14 mm and are symmetrically arranged left and right, a plurality of round or needle-shaped concave-convex points which play roles in turbulence and self-supporting are distributed on two sides of the corrugations, and the heights of the corrugations are less than or equal to the heights of the concave-convex points.
8. The integrated silicon-containing exhaust gas treatment device of claim 1, wherein: the high Wen Lvxin (11) is an acid-base resistant hard surface filter.
9. The integrated silicon-containing exhaust gas treatment device of claim 1, wherein: the side of the purified smoke chamber (12) is provided with an air supplementing air door (13) with an automatic air distribution and uniform distribution function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320179287.3U CN219510817U (en) | 2023-02-10 | 2023-02-10 | Integrated silicon-containing waste gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320179287.3U CN219510817U (en) | 2023-02-10 | 2023-02-10 | Integrated silicon-containing waste gas treatment device |
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| Publication Number | Publication Date |
|---|---|
| CN219510817U true CN219510817U (en) | 2023-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320179287.3U Active CN219510817U (en) | 2023-02-10 | 2023-02-10 | Integrated silicon-containing waste gas treatment device |
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| Country | Link |
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| CN (1) | CN219510817U (en) |
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2023
- 2023-02-10 CN CN202320179287.3U patent/CN219510817U/en active Active
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