CN114699868A - Industrial waste gas multistage treatment process - Google Patents
Industrial waste gas multistage treatment process Download PDFInfo
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- CN114699868A CN114699868A CN202210579465.1A CN202210579465A CN114699868A CN 114699868 A CN114699868 A CN 114699868A CN 202210579465 A CN202210579465 A CN 202210579465A CN 114699868 A CN114699868 A CN 114699868A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D57/00—Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B03C
- B01D57/02—Separation, other than separation of solids, not fully covered by a single other group or subclass, e.g. B03C by electrophoresis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/116—Molecular sieves other than zeolites
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses a multistage treatment process for industrial waste gas, which comprises the steps of connecting the industrial waste gas into a waste gas inlet of a waste gas treatment device, and removing oil stains in the waste gas through a cyclone oil removal device; purifying the waste gas subjected to oil stain removal by the cyclone oil removal device by a low-temperature plasma device; filtering the waste gas purified by the low-temperature plasma device and the waste gas absorbed by the electrophoresis drying chamber and the electrophoresis tank through the waste gas pipeline by a filter; purifying the filtered waste gas by a molecular sieve adsorption tank; after the desorption operation is carried out for a set time, stopping the electric heating operation, opening a cold supplement valve and a direct discharge valve, cooling the molecular sieve adsorption box, and closing the desorption system when a first set value is reached; the conveyed waste gas is adsorbed again by the adsorption fan and then is discharged into the atmosphere through an exhaust pipe with the height of 15 m; in general: the invention has the characteristics of convenient use, low cost, high waste gas treatment efficiency and good treatment effect.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment, and particularly relates to a multistage treatment process for industrial waste gas.
Background
The waste gas of enterprises is a great pollution source, and the treatment thereof always troubles the production enterprises. Particularly, with the development of society, countries and people pay more and more attention to environmental pollution and environmental governance. Therefore, the treatment of the waste gas of enterprises is a problem which needs to be solved urgently.
The prior art also shows some technical schemes of waste gas treatment, such as that a Chinese patent with application number of 2017111068213 discloses the invention and provides a waste gas treatment process, waste gas is collected and conveyed to a cyclone dust collector through a collecting pipeline for dust removal treatment, and then the waste gas enters two-stage waste gas treatment; firstly, spraying water on waste gas by a water pump through a spray tower, attaching most of dust in the water, and discharging a small amount of organic waste gas and then carrying out UV photolysis purification treatment;
the process is convenient to use, can reduce the exhaust emission and reduce the environmental pollution, but in the process of treating the exhaust gas, water is directly sprayed by the spray tower, so that the waste of water resources is serious, and meanwhile, the released gas contains moisture through UV photolysis purification, so that the exhaust gas can not be completely purified by UV photolysis, and the exhaust gas is not completely treated; therefore, the development of the industrial waste gas multi-stage treatment process is convenient to use and low in cost, and the arrangement of the multi-stage treatment process can enable waste gas treatment to be cleaner, so that the industrial waste gas multi-stage treatment process has important application significance.
SUMMARY OF THE PATENT FOR INVENTION
The invention aims to provide an industrial waste gas multistage treatment process, which aims to solve the problems that the waste gas cannot be completely treated in the treatment process and cannot reach the standard when being discharged to the atmosphere in the existing waste gas treatment process, so that the industrial waste gas multistage treatment process is convenient to use and low in cost, and has important application significance in enabling the waste gas treatment to be cleaner by arranging the multistage treatment process.
In order to achieve the purpose, the invention provides the following technical scheme:
a multi-stage treatment process for industrial waste gas comprises the following treatment steps: s1, introducing the industrial waste gas into a waste gas inlet of a waste gas treatment device, and removing oil stains in the waste gas through a cyclone oil removal device;
s2, purifying the waste gas which is degreased by the cyclone oil removal device in the S1 by a low-temperature plasma device;
s3, filtering the waste gas purified by the low-temperature plasma device in the S2 and the waste gas absorbed by the electrophoresis drying chamber and the electrophoresis tank through the waste gas pipeline through a filter;
s4, purifying the waste gas filtered in the S3 by a molecular sieve adsorption box;
s5, when the waste gas in S4 passes through the molecular sieve adsorption boxes, two molecular sieve adsorption boxes (A.B) adsorb the gas, the other molecular sieve adsorption box (C) desorbs the molecular sieve module, an inlet valve of the molecular sieve adsorption box (C) is interlocked with a desorption valve, the adsorption valve is opened and the desorption valve is closed in the adsorption state, the adsorption valve is closed and the desorption valve is opened in the desorption state, the phenomenon of simultaneous opening or closing does not exist, and the two adsorption-desorption states (A.B.C) are always kept to be switched to the equipment for shutdown at regular time;
s6, after the desorption operation is carried out for a set time, the desorption is stopped, the cold supplement valve and the direct discharge valve are opened, the molecular sieve adsorption box is cooled, and when a first set value is reached, the desorption system is closed;
desorption of molecular sieve modules of the molecular sieve adsorption box in the S7 and S6 work is powered by a high-temperature direct-fired furnace; the desorbed waste gas enters a high-temperature direct-fired furnace for combustion and decomposition;
s8, the waste gas conveyed in the S7 is collected by an adsorption fan and then is discharged into the atmosphere through an exhaust funnel with the height of 15 m;
the industrial waste gas discharged in the S1 is connected into a cyclone oil removal device through a wind speed transmitter and a collection fan, the cyclone oil removal device is connected with an oil seal, the right side of the cyclone oil removal device is connected with a low-temperature plasma treatment device, the industrial waste gas discharged from an electrophoresis drying chamber and an electrophoresis tank in the S3 is firstly blown to a next pipeline by a second collection fan and can enter a filter together with the waste gas treated by the low-temperature plasma treatment device, the filter is positioned on the right side of the low-temperature plasma treatment device and positioned on the right side of an electrophoresis drying chamber and an electrophoresis tank waste gas discharge pipeline, the right side of the filter is connected with a molecular sieve adsorption tank, the left side and the right side of the molecular sieve adsorption tank are both provided with electric valve switches, the lower part of the molecular sieve adsorption tank is connected with a direct-fired furnace, the right side of the direct-fired furnace is connected with a fresh air supply device, the right side of the fresh air supply device is connected with a desorption fan, the right side of the molecular sieve adsorption tank is connected with an adsorption fan, the right side of the adsorption fan is connected with a chimney;
the waste gas treatment system adopts PLC control (automatic and manual states); the operating parameters can be changed according to the process requirements;
the number of the molecular sieve adsorption tanks is three, the three molecular sieve adsorption tanks are connected in parallel, and the three molecular sieve adsorption tanks are controlled by a PLC (programmable logic controller), wherein two molecular sieve adsorption tanks have an adsorption function, and the other molecular sieve adsorption tank has a desorption function;
when the molecular sieve adsorption box in the S4 adsorbs gas, the PLC program automatically opens the corresponding adsorption valve, starts the adsorption fan after the valve is in place, and switches the box body after the adsorption fan operates to set adsorption time;
when the molecular sieve adsorption box in the S4 desorbs gas, a PLC presets a desorption program to operate, a corresponding desorption valve is opened, a desorption fan is operated, and a combustor is operated when a wind pressure signal is detected by a wind pressure switch at the outlet of the desorption fan;
fire valves are arranged on the left side and the right side of the filter;
has the advantages that: the cyclone oil removal device is arranged at a waste gas outlet, the cyclone oil removal device can remove oil stains in waste gas, then the waste gas enters the low-temperature plasma device, the low-temperature plasma device is rich in particles with extremely high chemical activity, electrons, ozone and excited molecules, industrial waste gas reacts with the active groups with higher energy and is finally converted into carbon dioxide and water, the carbon dioxide and the water are treated by the low-temperature plasma device, then the carbon dioxide and the water enter a filter together with waste gas discharged from an electrophoresis drying chamber and an electrophoresis tank, the carbon dioxide and the water are filtered again and then enter a molecular sieve adsorption box, the number of the three molecular sieve adsorption boxes is controlled by a PLC (programmable logic controller), two of the molecular sieve adsorption boxes adsorb the other one, the adsorbed gas enters the other molecular sieve adsorption box for desorption, the desorbed gas enters a direct-fired furnace for high-temperature treatment, then the gas is discharged into the atmosphere through a 15m high-chimney, and the process waste gas is treated layer by layer through a multi-stage treatment process, the limit value of environmental-friendly atmospheric emission can be met, and the treatment efficiency reaches over 95 percent; in general: the invention has the advantages of convenient use, low cost, cleaner waste gas treatment by setting a multi-stage treatment process, capability of meeting the limit value of environmental protection atmospheric emission and treatment efficiency of more than 95 percent.
Drawings
FIG. 1 is a schematic view of the structure of the process flow for treating waste gas of the present invention;
FIG. 2 is an enlarged schematic view of the invention at A-A;
FIG. 3 is an enlarged schematic view of the present invention at B-B.
Reference numerals: 1. the device comprises a cyclone oil removal device 2, an electric valve switch 3, a low-temperature plasma device 4, a filter 5, a molecular sieve adsorption tank 6, a cooling fan 7, a direct-fired furnace 8, a desorption fan 9, a fresh air supply device 10, an adsorption fan 11, a chimney 12, a wind speed transmitter 13, a collection fan 14, an oil seal 15 and a second collection fan.
Detailed Description
The following describes the embodiments of the present invention with reference to the drawings.
The invention provides a multistage treatment process for industrial waste gas, which is characterized by comprising the following treatment steps: s1, introducing the industrial waste gas into a waste gas inlet of a waste gas treatment device, and removing oil stains in the waste gas through the cyclone oil removal device 1;
s2, purifying the waste gas which is degreased by the cyclone oil removal device 1 in the S1 by a low-temperature plasma device 3;
s3, filtering the waste gas purified by the low-temperature plasma device 3 in the S2 and the waste gas absorbed by the electrophoresis drying chamber and the electrophoresis tank through the waste gas pipeline through a filter 4;
s4, purifying the waste gas filtered in the S3 by a molecular sieve adsorption box 5;
when the waste gas in S5 and S4 passes through the molecular sieve adsorption tanks 5, two molecular sieve adsorption tanks A.B adsorb the gas, the other molecular sieve adsorption tank C desorbs the molecular sieve module, an inlet valve of the molecular sieve adsorption tank C is interlocked with a desorption valve, the adsorption valve is opened and the desorption valve is closed in the adsorption state, the adsorption valve is closed and the desorption valve is opened in the desorption state, the phenomenon of simultaneous opening or closing does not exist, and the two adsorption-desorption states (A.B.C) are always kept to be switched to the equipment for shutdown at regular time;
s6, after the desorption operation is carried out for a set time, the desorption is stopped, the cold supplement valve and the direct discharge valve are opened, the molecular sieve adsorption box 5 is cooled, and when the first set value is reached, the desorption system is closed; the proportion of an inlet valve of the desorption fan and the straight-line valve is adjusted, and the proportion adjusting angle of the valve is continuously controlled according to the temperature of the pipeline temperature measuring element, so that the temperature of a desorption opening is ensured;
desorption of molecular sieve modules of the molecular sieve adsorption box 5 in the S7 and S6 work is powered by a high-temperature direct-fired furnace 7; the desorbed waste gas enters a high-temperature direct-fired furnace for combustion and decomposition;
s8, collecting the waste gas conveyed in the S7 by an adsorption fan 10, and then discharging the waste gas into the atmosphere through an exhaust pipe 11 with the height of 15 m;
the industrial waste gas discharged in the S1 is connected into a cyclone oil removing device 1 through a wind speed transmitter 12 and a collecting fan 13, the cyclone oil removing device 1 is connected with an oil seal 14, the right side of the cyclone oil removing device 1 is connected with a low-temperature plasma processing device 3, the industrial waste gas discharged from an electrophoresis drying chamber and an electrophoresis tank in the S3 is firstly blown to a next pipeline by a second collecting fan 15 and enters a filter 4 together with the waste gas processed by the low-temperature plasma processing device 3, the filter 4 is positioned at the right side of the low-temperature plasma processing device 3 and is positioned at the right side of the waste gas discharging pipeline of the electrophoresis drying chamber and the electrophoresis tank, the right side of the filter 4 is connected with a molecular sieve adsorption tank 5, the left side and the right side of the molecular sieve adsorption tank 5 are both provided with electric valve switches, a direct-fired furnace 7 is connected below the molecular sieve adsorption tank 5, and a combustion temperature measuring element of the direct-fired furnace 7 is interlocked with a fresh air inlet valve, when the temperature is over-temperature, a fresh air supply valve is opened to cool, the temperature is constant, the direct combustion furnace 7 is closed, a fresh air supply device 9 is connected to the right side of the fresh air supply device 9, a desorption fan 8 is connected to the right side of the fresh air supply device 9, an adsorption fan 10 is connected to the right side of the molecular sieve adsorption box 5, and a chimney 11 is connected to the right side of the adsorption fan 10;
the waste gas treatment system adopts PLC to control automatic and manual states; the operating parameters can be changed according to the process requirements;
the number of the molecular sieve adsorption tanks 5 is three, the three molecular sieve adsorption tanks 5 are connected in parallel, and the three molecular sieve adsorption tanks 5 are controlled by a PLC (programmable logic controller), wherein two molecular sieve adsorption tanks are used for adsorption function, and the other molecular sieve adsorption tank is used for desorption function;
when the molecular sieve adsorption box 5 in the S4 adsorbs gas, the PLC program automatically opens the corresponding adsorption valve, starts the adsorption fan after the valve is in place, and switches the box body after the adsorption fan operates to set adsorption time;
when the molecular sieve adsorption box 5 desorbs gas in S4, the PLC presets a desorption program to operate, opens a corresponding desorption valve, operates a desorption fan, and operates a burner when a wind pressure signal is detected by a wind pressure switch at the outlet of the desorption fan;
fire valves are arranged on the left side and the right side of the filter 4;
the invention discloses a method for preparing a novel composite material: collecting the number of fans: 1, power: 45kw (variable frequency control); the number of adsorption fans is as follows: 1, power: 37kw (variable frequency control); the number of desorption fans is as follows: 1, power: 7.5kw (variable frequency control); the number of cooling fans is: 1, power: 7.5kw (variable frequency control); one burner: 20 ten thousand Kcal, specific regulation (comprising 1 combustion-supporting fan, the power is 3 kw); a wind pressure switch: 4 (self-matched inlets or outlets, one fan for each); opening and closing amount electric valve: 15, carrying out the step (A); an analog electric valve: 2, performing step (2); thermocouple temperature measurement point: 8 points (3 points of the activated carbon adsorption box, 4 points of direct combustion purification and 1 point of temperature regulation and control); a pointer differential pressure gauge: 1 (pointer, dry filter configuration);
the invention adopts PLC control (automatic and manual states), and PLC parameters can be changed according to process requirements; under the condition of automatic operation, the device has a safety or interlocking function, and can give an alarm or automatically stop if the device is operated abnormally; the automatic operation and the manual operation can be switched at will;
when a PLC preset desorption program operates, a corresponding desorption valve is opened, a desorption fan is operated, and when a wind pressure switch at the outlet of the desorption fan detects a wind pressure signal, a combustor is operated;
the invention relates to a process for implementing the process, firstly, three pipelines of No. 1 organic waste gas, No. 2 organic waste gas and No. 3 organic waste gas are blown by a collecting fan to enter a cyclone oil removing device 1, the cyclone oil removing device 1 can carry out oil removing treatment on the entering industrial waste gas, the treated waste gas enters a low-temperature plasma device 3, the left side and the right side of the low-temperature plasma device 3 are both provided with electric valve switches 2, the electric valve switches 2 are controlled by a PLC, the left electric valve is opened and the right electric valve is closed when the waste gas enters, the low-temperature plasma device 3 is opened to treat the waste gas when the waste gas enters, the electric valve on the right side of the low-temperature plasma device 3 is opened after the treatment is finished, the treated waste gas and gases discharged from an electrophoresis drying chamber and an electrophoresis tank enter a filter 4, the filter 4 carries out filtration treatment on the entering industrial waste gas, one of the molecular sieve adsorption tank 5 is controlled by the PLC to be a desorption function, the other two molecular sieve adsorption boxes are adsorption functions, the PLC controls the waste gas to enter the two molecular sieve adsorption boxes 5 for adsorption treatment, the adsorption treatment time is set, the PLC controls the other molecular sieve adsorption box 5 for desorption after the adsorption treatment is finished, the three molecular sieve adsorption boxes 5 are randomly distributed by the PLC in the operation process, the adsorption and desorption functions are uncertain, the desorbed gas enters the direct-fired furnace 7 for high-temperature treatment, and is driven by the adsorption fan 10 and discharged by a chimney 11 with the height of 15m after the treatment is finished, so that the industrial waste gas treatment is finished; in general: the invention has the advantages of convenient use, low cost, cleaner waste gas treatment by setting a multi-stage treatment process, capability of meeting the limit value of environmental protection atmospheric emission and treatment efficiency of more than 95 percent.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (1)
1. The multistage industrial waste gas treatment process is characterized by comprising the following treatment steps: s1, introducing the industrial waste gas into a waste gas inlet of a waste gas treatment device, and removing oil stains in the waste gas through a cyclone oil removal device (1);
s2, purifying the waste gas after the oil stain is removed by the cyclone oil removal device (1) in the S1 by a low-temperature plasma device (3);
s3, filtering the waste gas purified by the low-temperature plasma device (3) in the S2 and the waste gas absorbed by the electrophoresis drying chamber and the electrophoresis tank through the waste gas pipeline through a filter (4);
s4, purifying the waste gas filtered in the S3 by a molecular sieve adsorption box (5);
s5, when the waste gas in S4 passes through the molecular sieve adsorption boxes (5), two molecular sieve adsorption boxes (A.B) adsorb the gas, the other molecular sieve adsorption box (C) desorbs the molecular sieve module, an inlet valve of the molecular sieve adsorption box (C) is interlocked with a desorption valve, the adsorption valve is opened in the adsorption state, the desorption valve is closed, the adsorption valve is closed in the desorption state, the desorption valve is opened, the phenomenon of simultaneous opening or closing does not exist, and the two adsorption-desorption states (A.B.C) are always switched to the equipment to be stopped at regular time;
s6, after the desorption operation is carried out for a set time, the desorption is stopped, the cold supplement valve and the direct vent valve are opened, the molecular sieve adsorption box (5) is cooled, and when a first set value is reached, the desorption system is closed;
the molecular sieve adsorption box (5) in the S7 and S6 work is desorbed by a molecular sieve module and is powered by a high-temperature direct-fired furnace (7); the desorbed waste gas enters a high-temperature direct-fired furnace for combustion and decomposition;
s8, collecting the waste gas conveyed in the S7 by an adsorption fan (10), and then discharging the waste gas into the atmosphere through an exhaust pipe (11) with the height of 15 m;
the industrial waste gas discharged in the S1 is connected into a cyclone oil removing device (1) through a wind speed transmitter (12) and a collecting fan (13), the cyclone oil removing device (1) is connected with an oil seal (14), the right side of the cyclone oil removing device (1) is connected with a low-temperature plasma processing device (3), the industrial waste gas discharged from an electrophoresis drying chamber and an electrophoresis tank in the S3 is firstly blown to a next pipeline by a second collecting fan (15) and enters a filter (4) together with the waste gas processed by the low-temperature plasma processing device (3), the filter (4) is positioned on the right side of the low-temperature plasma processing device (3) and is positioned on the right side of the waste gas discharging pipeline of the electrophoresis drying chamber and the electrophoresis tank, the right side of the filter (4) is connected with a molecular sieve adsorption tank (5), electric valve switches are arranged on the left and right sides of the molecular sieve adsorption tank (5), a direct-fired furnace (7) is connected below the molecular sieve adsorption tank (5), the right side of the direct-fired furnace (7) is connected with a fresh air supply device (9), the right side of the fresh air supply device (9) is connected with a desorption fan (8), the right side of the molecular sieve adsorption box (5) is connected with an adsorption fan (10), and the right side of the adsorption fan (10) is connected with a chimney (11);
the waste gas treatment system adopts PLC control (automatic and manual states); the operating parameters can be changed according to the process requirements;
the number of the molecular sieve adsorption boxes (5) is three, the three molecular sieve adsorption boxes (5) are connected in parallel, and the three molecular sieve adsorption boxes (5) are controlled by a PLC (programmable logic controller) to have an adsorption function and a desorption function;
when the molecular sieve adsorption box (5) in the S4 adsorbs gas, the PLC program automatically opens the corresponding adsorption valve, after the valve is in place, the adsorption fan is started, and the box body is switched after the operation is carried out for the set adsorption time;
when the molecular sieve adsorption box (5) in the S4 desorbs gas, a PLC (programmable logic controller) presets a desorption program to operate, a corresponding desorption valve is opened, a desorption fan is operated, and a combustor is operated when a wind pressure signal is detected by a wind pressure switch at the outlet of the desorption fan;
fire valves are arranged on the left side and the right side of the filter (4).
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| CN202210579465.1A CN114699868A (en) | 2022-05-25 | 2022-05-25 | Industrial waste gas multistage treatment process |
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| CN202210579465.1A CN114699868A (en) | 2022-05-25 | 2022-05-25 | Industrial waste gas multistage treatment process |
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