CN111672287A - Waste gas recovery system capable of reducing condensate - Google Patents
Waste gas recovery system capable of reducing condensate Download PDFInfo
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- CN111672287A CN111672287A CN202010594793.XA CN202010594793A CN111672287A CN 111672287 A CN111672287 A CN 111672287A CN 202010594793 A CN202010594793 A CN 202010594793A CN 111672287 A CN111672287 A CN 111672287A
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/62—Carbon oxides
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/504—Carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2258/00—Sources of waste gases
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- B01D2258/0283—Flue gases
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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
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Abstract
The invention discloses a waste gas recovery system for reducing condensate, which comprises a smoke tube, a smoke treatment tank and a primary treatment chamber, wherein the smoke exhaust end of the smoke tube is connected with a waste heat recoverer through a flange, the smoke outlet end of the waste heat recoverer is connected with a water-cooling flue, the gas outlet end of the water-cooling flue is connected with a bag-type dust remover, the smoke treatment tank is arranged on one side of the bag-type dust remover, the bottom of one side of the smoke treatment tank is provided with a gas inlet nozzle, and the top of the smoke treatment tank is provided with a gas outlet. The waste gas is subjected to dust removal and dehydration treatment by utilizing multi-stage waste removal treatment, condensate and water vapor are reduced, and the carbon dioxide, sulfur and nitrate are removed, and meanwhile, multi-stage cooling and dust fall treatment is performed on the carbon dioxide absorbent liquid, the desulfurizer liquid and the denitrifier liquid, so that the environmental protection coefficient is higher when the waste gas treated by the waste gas recovery system is discharged.
Description
Technical Field
The invention belongs to the technical field of waste gas treatment, and particularly relates to a waste gas recovery system for reducing condensate.
Background
The waste gas recovery system that present fume emission used uses comparatively singly, when the flue gas that faces different compositions is handled, needs personnel to assemble corresponding clarification plant again, and it is comparatively inconvenient to use, does not have the part that can direct change treating agent liquid.
Disclosure of Invention
It is an object of the present invention to provide an exhaust gas recovery system with reduced condensate to solve the problems set forth in the background art described above.
In order to achieve the purpose, the invention provides the following technical scheme: the waste gas recovery system for reducing condensate comprises a smoke pipe, a smoke treatment tank and a primary treatment chamber, wherein the smoke exhaust end of the smoke pipe is connected with a waste heat recoverer through a flange, the smoke outlet end of the waste heat recoverer is connected with a water-cooling flue, the air outlet end of the water-cooling flue is connected with a bag-type dust remover, one side of the bag-type dust remover is provided with a smoke treatment tank, the bottom of one side of the smoke treatment tank is provided with an air inlet nozzle, the top of the smoke treatment tank is provided with an air outlet nozzle, the air inlet nozzle of the smoke treatment tank is connected with the exhaust end of the bag-type dust remover through an air pipe, the air outlet nozzle of the smoke treatment tank is connected with a spiral steam-water separator through an air pipe, the air outlet of the spiral steam-water separator is connected with a desulfurizing tower through a pipeline, The device comprises a secondary treatment chamber group and a tertiary treatment chamber group, wherein the bottom of one side of the primary treatment chamber group is connected with an air inlet nozzle, the top of the primary treatment chamber group is connected with the bottom of one side of the secondary treatment chamber group, the top of the secondary treatment chamber group is connected with the bottom of one side of the tertiary treatment chamber group, and the top of the tertiary treatment chamber group is connected with an air outlet nozzle.
Further, the specific recovery steps are as follows:
the method comprises the following steps: connecting the air inlet end of the smoke tube with an exhaust port of a boiler, performing waste heat recovery treatment on the high-temperature waste gas passing through a waste heat recoverer, sending the waste gas into a water-cooling flue by the exhaust end of the waste heat recoverer for primary water-cooling treatment, and then performing dust reduction treatment on the waste gas by a bag-type dust remover;
step two: the waste gas after dust falling treatment of the bag-type dust remover is discharged to a primary treatment chamber group of a flue gas treatment tank through an air inlet nozzle, before use, carbon dioxide absorbent liquid is injected into the primary treatment chamber group, an air outlet end of the air outlet nozzle is sleeved with an air extraction pump, and the waste gas passing through the primary treatment chamber group is subjected to carbon dioxide removal treatment in sequence;
step three: the waste gas treated in the second step enters a secondary treatment chamber group through the suction force of an air pump, a desulfurizer liquid is injected into the secondary treatment chamber group before use, and the passing waste gas is subjected to desulfurization treatment through the secondary treatment chamber group;
step four: the gas treated in the third step sequentially enters a third-stage treatment chamber group through the suction force of a suction pump, before the gas is used, a denitration agent liquid is sequentially injected into the third-stage treatment chamber group, the gas passing through the third-stage treatment chamber group is subjected to denitration treatment, and the waste gas after being sequentially treated by the primary treatment chamber group, the second-stage treatment chamber group and the third-stage treatment chamber group is subjected to multi-level cooling and dust-settling treatment through a carbon dioxide absorbent liquid, a desulfurizer liquid and the denitration agent liquid while carbon dioxide, sulfur and nitrate are removed;
step five: sending the gas treated in the step four to a spiral steam-water separator for gas-water separation treatment by the suction force of a suction pump, and performing unified gas-water separation on water condensate generated in the flue gas and water vapor in the treatment process;
step six: and (4) discharging the gas treated in the fifth step to a desulfurizing tower through an axial flow fan to carry out four-stage waste gas treatment, and discharging the gas through a chimney to the outside after treatment to finish multistage dust removal and desulfurization treatment on the waste flue gas of the boiler, so that the discharged gas is clean and environment-friendly.
Furthermore, the water level lines of the liquid materials in the primary treatment chamber group, the secondary treatment chamber group and the third treatment chamber group are all lower than the exhaust ports, and baffle plates are welded in the exhaust ports of the primary treatment chamber group, the secondary treatment chamber group and the third treatment chamber group.
Furthermore, 2-4 groups of axial flow fans are sequentially sleeved on the smoke pipe 1.
Furthermore, the top of one side of each of the primary treatment chamber group, the secondary treatment chamber group and the tertiary treatment chamber group of the flue gas treatment tank is provided with a liquid injection port and a liquid discharge port, and one side of each of the primary treatment chamber group, the secondary treatment chamber group and the tertiary treatment chamber group is provided with an observation window.
Further, the carbon dioxide absorbent liquid in the second step is amine liquid or vanadic anhydride catalytic potassium alkali liquid.
Further, the desulfurizing agent liquid in the third step is iron oxide melt.
Compared with the prior art, the invention has the beneficial effects that: the multi-stage waste gas removing treatment is utilized to remove dust and water from the waste gas, condensate and water vapor are reduced, the multi-stage cooling and dust-settling treatment is carried out on the waste gas through carbon dioxide absorbent liquid, desulfurizer liquid and denitrifier liquid while removing carbon dioxide, sulfur and nitrate, so that the environmental protection coefficient is higher when the waste gas treated by the waste gas recovery system is discharged, personnel can inject required agent liquid with different components into the primary treatment chamber group, the secondary treatment chamber group and the tertiary treatment chamber group according to the arrangement of the primary treatment chamber group, the secondary treatment chamber group and the tertiary treatment chamber group, the diversity of the whole waste gas recovery treatment system is greatly improved, the waste gas with different components is treated without disassembling and recombining the multiple recovery systems, and the liquid material is replaced through the liquid injection ports and the liquid discharge ports of the primary treatment chamber group, the secondary treatment chamber group and the tertiary treatment chamber group, effectively reducing the use cost.
Drawings
FIG. 1 is a schematic diagram of the overall configuration of a condensate reduction flue gas recovery system of the present invention.
FIG. 2 is a schematic cross-sectional view of a flue gas treatment canister of a condensate reduction flue gas recovery system of the present invention.
FIG. 3 is a schematic diagram of a flue gas treatment tank of a condensate reduction flue gas recovery system according to the present invention.
In the figure: 1. a smoke pipe; 2. a waste heat recoverer; 3. water cooling the flue; 4. a bag-type dust collector; 5. a flue gas treatment tank; 6. a spiral steam-water separator; 7. a desulfurizing tower; 8. a chimney; 9. an axial flow fan; 10. a primary processing chamber; 11. a secondary treatment chamber group; 12. a third-stage treatment chamber group; 13. an air outlet nozzle; 14. an air inlet nozzle; 15. a tapping port; 16. a liquid injection port; 17. and (4) an observation window.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1-3, a waste gas recovery system for reducing condensate comprises a smoke tube 1, a smoke treatment tank 5 and a primary treatment chamber 10, wherein the smoke exhaust end of the smoke tube 1 is connected with a waste heat recoverer 2 through a flange, the smoke outlet end of the waste heat recoverer 2 is connected with a water cooling flue 3, the air outlet end of the water cooling flue 3 is connected with a bag-type dust remover 4, one side of the bag-type dust remover 4 is provided with the smoke treatment tank 5, the bottom of one side of the smoke treatment tank 5 is provided with an air inlet nozzle 14, the top of the smoke treatment tank 5 is provided with an air outlet nozzle 13, the air inlet nozzle 14 of the smoke treatment tank 5 is connected with the air outlet end of the bag-type dust remover 4 through an air tube, the air outlet nozzle 13 of the smoke treatment tank 5 is connected with a spiral steam-water separator 6 through an air tube, the air outlet of the spiral, primary treatment chamber group 10, secondary treatment chamber group 11 and tertiary treatment chamber group 12 have arranged bottom to top both sides in 5 in proper order in the flue gas treatment tank in the crisscross way, primary treatment chamber group 10 one side bottom is connected with suction nozzle 14, the top and the 11 one side bottom of secondary treatment chamber group 10 of primary treatment chamber group are connected, 11 tops of secondary treatment chamber group are connected with tertiary treatment chamber group 12 one side bottom, tertiary treatment chamber group 12 tops is connected with play gas nozzle 13.
Wherein the specific recovery steps are as follows:
the method comprises the following steps: the air inlet end of a smoke pipe 1 is connected with an exhaust port of a boiler, after waste heat recovery treatment is carried out on high-temperature waste gas passing through a waste heat recoverer 2, the waste gas is sent into a water-cooling flue 3 by the exhaust end of the waste heat recoverer 2 to be subjected to primary water-cooling treatment, and then dust falling treatment is carried out on the waste gas by a bag-type dust collector 4;
step two: the waste gas after dust-falling treatment of the bag-type dust collector 4 is discharged to a primary treatment chamber group 10 of a flue gas treatment tank 5 through an air inlet nozzle 14, before use, carbon dioxide absorbent liquid is injected into the primary treatment chamber group 10, an air outlet end of an air outlet nozzle 13 is connected with an air pump in a sleeved mode, and carbon dioxide removal treatment is sequentially carried out on the waste gas passing through the primary treatment chamber group 10;
step three: the waste gas treated in the second step enters the secondary treatment chamber group 11 through the suction force of the air pump, before use, a desulfurizer liquid is injected into the secondary treatment chamber group 11, and the treated waste gas is subjected to desulfurization treatment through the secondary treatment chamber group 11;
step four: the gas treated in the third step sequentially enters the third-stage treatment chamber group 12 through the suction force of the suction pump, before the gas is used, a denitration agent liquid is sequentially injected into the third-stage treatment chamber group 12, the gas passing through is subjected to denitration treatment through the third-stage treatment chamber group 12, and the waste gas sequentially treated through the primary treatment chamber group 10, the secondary treatment chamber group 11 and the third-stage treatment chamber group 12 is subjected to multi-level cooling and dust-settling treatment through a carbon dioxide absorbent liquid, a desulfurizer liquid and the denitration agent liquid while carbon dioxide, sulfur and nitrate are removed;
step five: the gas treated in the step four is sent to a spiral steam-water separator 6 for gas-water separation treatment through the suction force of a suction pump, and the water condensate generated in the flue gas and the water vapor in the treatment process are subjected to unified gas-water separation;
step six: and (3) discharging the gas treated in the fifth step to a desulfurizing tower 7 through an axial flow fan 9 to carry out four-stage waste gas treatment, and discharging the gas through a chimney 8 after treatment to finish multi-stage dust removal and desulfurization treatment on the waste flue gas of the boiler, so that the discharged gas is clean and environment-friendly.
The water level lines of the liquid materials in the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12 are all lower than the exhaust ports, and baffle plates are welded in the exhaust ports of the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12.
Wherein, 2 groups of axial fans 9 are sequentially sleeved on the smoke pipe 1.
The top of one side of each of the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12 of the flue gas treatment tank 5 is provided with a liquid injection port 16 and a liquid discharge port 15, and one side of each of the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12 is provided with an observation window 17.
Wherein, the carbon dioxide absorbent liquid in the second step is amine liquid.
Wherein, the desulfurizing agent liquid in the third step is ferric oxide melt.
Example 2
As shown in fig. 1-3, a waste gas recovery system for reducing condensate comprises a smoke tube 1, a smoke treatment tank 5 and a primary treatment chamber 10, wherein the smoke exhaust end of the smoke tube 1 is connected with a waste heat recoverer 2 through a flange, the smoke outlet end of the waste heat recoverer 2 is connected with a water cooling flue 3, the air outlet end of the water cooling flue 3 is connected with a bag-type dust remover 4, one side of the bag-type dust remover 4 is provided with the smoke treatment tank 5, the bottom of one side of the smoke treatment tank 5 is provided with an air inlet nozzle 14, the top of the smoke treatment tank 5 is provided with an air outlet nozzle 13, the air inlet nozzle 14 of the smoke treatment tank 5 is connected with the air outlet end of the bag-type dust remover 4 through an air tube, the air outlet nozzle 13 of the smoke treatment tank 5 is connected with a spiral steam-water separator 6 through an air tube, the air outlet of the spiral, primary treatment chamber group 10, secondary treatment chamber group 11 and tertiary treatment chamber group 12 have arranged bottom to top both sides in 5 in proper order in the flue gas treatment tank in the crisscross way, primary treatment chamber group 10 one side bottom is connected with suction nozzle 14, the top and the 11 one side bottom of secondary treatment chamber group 10 of primary treatment chamber group are connected, 11 tops of secondary treatment chamber group are connected with tertiary treatment chamber group 12 one side bottom, tertiary treatment chamber group 12 tops is connected with play gas nozzle 13.
Wherein the specific recovery steps are as follows:
the method comprises the following steps: the air inlet end of a smoke pipe 1 is connected with an exhaust port of a boiler, after waste heat recovery treatment is carried out on high-temperature waste gas passing through a waste heat recoverer 2, the waste gas is sent into a water-cooling flue 3 by the exhaust end of the waste heat recoverer 2 to be subjected to primary water-cooling treatment, and then dust falling treatment is carried out on the waste gas by a bag-type dust collector 4;
step two: the waste gas after dust-falling treatment of the bag-type dust collector 4 is discharged to a primary treatment chamber group 10 of a flue gas treatment tank 5 through an air inlet nozzle 14, before use, carbon dioxide absorbent liquid is injected into the primary treatment chamber group 10, an air outlet end of an air outlet nozzle 13 is connected with an air pump in a sleeved mode, and carbon dioxide removal treatment is sequentially carried out on the waste gas passing through the primary treatment chamber group 10;
step three: the waste gas treated in the second step enters the secondary treatment chamber group 11 through the suction force of the air pump, before use, a desulfurizer liquid is injected into the secondary treatment chamber group 11, and the treated waste gas is subjected to desulfurization treatment through the secondary treatment chamber group 11;
step four: the gas treated in the third step sequentially enters the third-stage treatment chamber group 12 through the suction force of the suction pump, before the gas is used, a denitration agent liquid is sequentially injected into the third-stage treatment chamber group 12, the gas passing through is subjected to denitration treatment through the third-stage treatment chamber group 12, and the waste gas sequentially treated through the primary treatment chamber group 10, the secondary treatment chamber group 11 and the third-stage treatment chamber group 12 is subjected to multi-level cooling and dust-settling treatment through a carbon dioxide absorbent liquid, a desulfurizer liquid and the denitration agent liquid while carbon dioxide, sulfur and nitrate are removed;
step five: the gas treated in the step four is sent to a spiral steam-water separator 6 for gas-water separation treatment through the suction force of a suction pump, and the water condensate generated in the flue gas and the water vapor in the treatment process are subjected to unified gas-water separation;
step six: and (3) discharging the gas treated in the fifth step to a desulfurizing tower 7 through an axial flow fan 9 to carry out four-stage waste gas treatment, and discharging the gas through a chimney 8 after treatment to finish multi-stage dust removal and desulfurization treatment on the waste flue gas of the boiler, so that the discharged gas is clean and environment-friendly.
The water level lines of the liquid materials in the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12 are all lower than the exhaust ports, and baffle plates are welded in the exhaust ports of the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12.
In this embodiment, as shown in fig. 2, the blocking sheet can block the liquid material.
Wherein, 4 groups of axial fans 9 are sequentially sleeved on the smoke pipe 1.
The top of one side of each of the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12 of the flue gas treatment tank 5 is provided with a liquid injection port 16 and a liquid discharge port 15, and one side of each of the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12 is provided with an observation window 17.
In this embodiment, as shown in fig. 3, the observation window 17 is convenient for a person to observe the turbidity and the remaining amount of the agent liquid.
And C, wherein the carbon dioxide absorbent liquid in the step II is potassium alkali liquid catalyzed by vanadium pentoxide.
Wherein, the desulfurizing agent liquid in the third step is ferric oxide melt.
The working principle of the invention is as follows: by utilizing multi-stage waste removing treatment, the waste gas is subjected to dust removal and dehydration treatment, condensate and water vapor are reduced, multi-stage cooling and dust fall treatment are carried out through carbon dioxide absorbent liquid, desulfurizer liquid and denitrifier liquid while carbon dioxide, sulfur and nitrate are removed, so that the environmental protection coefficient is higher when the waste gas treated by the waste gas recovery system is discharged, through the arrangement of the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12, personnel can inject required agent liquid with different components into the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12 aiming at the smoke with different components, the diversity of the whole waste gas recovery treatment system is greatly improved, the smoke with different components is treated without the need of dismounting and recombination of a plurality of recovery systems, and liquid materials are replaced through the liquid injection ports 16 and the liquid discharge ports 15 of the primary treatment chamber group 10, the secondary treatment chamber group 11 and the tertiary treatment chamber group 12, effectively reducing the use cost.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A waste gas treatment device for reducing condensate comprises a smoke pipe (1), a smoke treatment tank (5) and a primary treatment chamber (10), and is characterized in that the smoke exhaust end of the smoke pipe (1) is connected with a waste heat recoverer (2) through a flange, the smoke exhaust end of the waste heat recoverer (2) is connected with a water cooling flue (3), the air outlet end of the water cooling flue (3) is connected with a bag-type dust remover (4), the smoke treatment tank (5) is arranged on one side of the bag-type dust remover (4), the bottom of one side of the smoke treatment tank (5) is provided with an air inlet nozzle (14), the top of the smoke treatment tank (5) is provided with an air outlet nozzle (13), the air inlet nozzle (14) of the smoke treatment tank (5) is connected with the air exhaust end of the bag-type dust remover (4) through an air pipe, the air outlet nozzle (13) of the smoke treatment tank, the gas outlet of spiral catch water (6) has desulfurizing tower (7) through the pipe connection, the gas outlet of desulfurizing tower (7) is connected with chimney (8), primary treatment room group (10), secondary treatment room group (11) and tertiary treatment room group (12) have been arranged in proper order to top both sides in bottom in flue gas treatment tank (5) in the crisscross way, primary treatment room group (10) one side bottom is connected with suction nozzle (14), the top and the secondary treatment room of primary treatment room group (10) one side bottom are connected, secondary treatment room group (11) top is connected with tertiary treatment room group (12) one side bottom, tertiary treatment room group (12) top is connected with outlet nozzle (13).
2. An exhaust gas recovery processing method of an exhaust gas processing device for reducing condensate according to claim 1, characterized in that: the specific recovery steps are as follows:
the method comprises the following steps: the air inlet end of a smoke pipe (1) is connected with an exhaust port of a boiler, after waste heat recovery treatment is carried out on high-temperature waste gas passing through a waste heat recoverer (2), the waste gas is sent into a water-cooling flue (3) by the exhaust end of the waste heat recoverer (2) to be subjected to primary water-cooling treatment, and then dust falling treatment is carried out on the waste gas by a bag-type dust remover (4);
step two: the waste gas after dust falling treatment of the bag-type dust collector (4) is discharged to a primary treatment chamber group (10) of a flue gas treatment tank (5) through an air inlet nozzle (14), before use, carbon dioxide absorbent liquid is injected into the primary treatment chamber group (10), an air outlet end of an air outlet nozzle (13) is sleeved with an air pump, and carbon dioxide removal treatment is sequentially carried out on the waste gas passing through the primary treatment chamber group (10);
step three: the waste gas treated in the step two enters a secondary treatment chamber group (11) through the suction force of an air pump, a desulfurizer liquid is injected into the secondary treatment chamber group (11) before use, and the waste gas passing through the secondary treatment chamber group (11) is subjected to desulfurization treatment;
step four: the gas treated in the third step sequentially enters a third-stage treatment chamber group (12) through the suction force of a suction pump, before the gas is used, a denitration agent liquid is sequentially injected into the third-stage treatment chamber group (12), the gas passing through is subjected to denitration treatment through the third-stage treatment chamber group (12), and the waste gas after being sequentially treated through a primary treatment chamber group (10), a secondary treatment chamber group (11) and the third-stage treatment chamber group (12) is subjected to multi-stage cooling and dust-falling treatment through a carbon dioxide absorbent liquid, a desulfurizer liquid and the denitration agent liquid while carbon dioxide, sulfur and nitrate are removed;
step five: the gas treated in the step four is sent to a spiral steam-water separator (6) for gas-water separation treatment through the suction force of a suction pump, and the water condensate generated in the flue gas and the water vapor in the treatment process are subjected to unified gas-water separation;
step six: and (3) discharging the gas treated in the fifth step to a desulfurizing tower (7) through an axial flow fan (9) to enter a four-stage waste gas treatment, and discharging the gas through a chimney (8) to the outside after treatment to finish multistage dust removal and desulfurization treatment on the waste flue gas of the boiler, so that the discharged gas is clean and environment-friendly.
3. The exhaust gas recovery processing method of an exhaust gas processing device for reducing condensate according to claim 2, characterized in that: the water line of the liquid materials in the primary treatment chamber group (10), the secondary treatment chamber group (11) and the tertiary treatment chamber group (12) is lower than the exhaust port, and baffle plates are welded in the exhaust ports of the primary treatment chamber group (10), the secondary treatment chamber group (11) and the tertiary treatment chamber group (12).
4. An exhaust treatment device for reducing condensate as set forth in claim 1 wherein: the smoke pipe (1) is sequentially sleeved with 2-4 groups of axial flow fans (9).
5. An exhaust treatment device for reducing condensate as set forth in claim 1 wherein: the flue gas treatment tank is characterized in that a liquid injection port (16) and a liquid discharge port (15) are formed in the tops of one sides of a primary treatment chamber group (10), a secondary treatment chamber group (11) and a tertiary treatment chamber group (12) of the flue gas treatment tank (5), and observation windows (17) are formed in one sides of the primary treatment chamber group (10), the secondary treatment chamber group (11) and the tertiary treatment chamber group (12).
6. The exhaust gas recovery processing method of an exhaust gas processing device for reducing condensate according to claim 2, characterized in that: and the carbon dioxide absorbent liquid in the second step is amine liquid or potassium alkali liquid catalyzed by vanadium pentoxide.
7. The exhaust gas recovery processing method of an exhaust gas processing device for reducing condensate according to claim 2, characterized in that: and the desulfurizing agent liquid in the third step is iron oxide melt.
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| CN202010594793.XA CN111672287A (en) | 2020-06-28 | 2020-06-28 | Waste gas recovery system capable of reducing condensate |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN210021563U (en) * | 2019-02-20 | 2020-02-07 | 贵州环科环境工程有限公司 | Coal-fired flue gas desulfurization equipment |
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| CN103285723A (en) * | 2013-06-07 | 2013-09-11 | 蔡如尤 | Waste gas treating device |
| KR101734185B1 (en) * | 2016-12-05 | 2017-05-11 | (주)신화엔바텍 | System for removing foul smell of multiple pollutant with variable laminated absorption type, and deodorization method using the same |
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| CN210021563U (en) * | 2019-02-20 | 2020-02-07 | 贵州环科环境工程有限公司 | Coal-fired flue gas desulfurization equipment |
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