CN111036039A - Treatment device and treatment method for waste gas in tar treatment process - Google Patents
Treatment device and treatment method for waste gas in tar treatment process Download PDFInfo
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- CN111036039A CN111036039A CN202010010321.5A CN202010010321A CN111036039A CN 111036039 A CN111036039 A CN 111036039A CN 202010010321 A CN202010010321 A CN 202010010321A CN 111036039 A CN111036039 A CN 111036039A
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- B01D53/14—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 absorption
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- B01D53/14—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 absorption
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- 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
- B01D53/14—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 absorption
- B01D53/1406—Multiple stage absorption
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- B01D53/14—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 absorption
- B01D53/1487—Removing organic compounds
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- 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
- B01D53/50—Sulfur oxides
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
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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
- B01D2258/02—Other waste gases
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Abstract
The invention discloses a treatment device and a treatment method for waste gas in a tar treatment process, wherein the treatment device comprises a waste gas pipeline, a washing system, a water washing system, an incineration device, a desulfurization and denitrification system and a discharge chimney; one end of the waste gas pipeline is connected with a waste gas collecting device pipeline at the tar production equipment side, and the other end of the waste gas pipeline is connected with a washing system pipeline; the washing system is connected with a washing system pipeline, the washing system is connected with an incineration device pipeline, the incineration device is connected with a desulfurization and denitrification system pipeline, and the other end of the desulfurization and denitrification system is connected with a discharge chimney. The device can completely remove pollutants in the waste gas, reaches the national environmental protection emission standard, not only solves the pollution of the waste gas to the environment, but also improves the product yield and reduces the enterprise cost.
Description
Technical Field
The invention relates to the field of treatment of waste gas in a tar deep processing process, in particular to a device and a method for treating waste gas in a deep processing process.
Background
A certain amount of waste gas generated in the deep processing process of tar is difficult to be effectively purified and cannot meet the environmental-friendly discharge standard.
Disclosure of Invention
The invention aims to solve the problems and provide a method which can completely remove pollutants in waste gas so as to meet the environmental emission standard. Not only solves the pollution of waste gas to the environment, but also improves the product yield and reduces the enterprise cost.
In order to achieve the purpose, the invention provides the following technical scheme:
a treatment device for waste gas in a tar treatment process comprises a waste gas pipeline, a washing system, a water washing system, an incineration device, a desulfurization and denitrification system and a discharge chimney; one end of the waste gas pipeline is connected with a waste gas collecting device pipeline at the tar production equipment side, and the other end of the waste gas pipeline is connected with a washing system pipeline; the washing system is connected with a washing system pipeline, the washing system is connected with an incineration device pipeline, the incineration device is connected with a desulfurization and denitrification system pipeline, and the other end of the desulfurization and denitrification system is connected with a discharge chimney.
Further, the washing system comprises a washing tank, a washing tower, a negative pressure generator and a first circulating pump; the negative pressure generator is installed above the washing tank and connected with a waste gas pipeline, the washing tower is further installed above the washing tank, the washing tank is connected with a circulating pump, the circulating pump is connected with the upper end of the washing tower, the circulating pump and the washing tower are both connected with the negative pressure generator pipeline, and the upper end of the washing tower is connected with a washing system pipeline.
Further, the washing system includes washing tower, water washing tank, No. two circulating pumps, vapour and liquid separator and total flue gas fan, washing tower and washing tower pipe connection, water washing tank and No. two circulating pump pipe connections, No. two circulating pumps and the upper end pipe connection of washing tower, the upper end and the vapour and liquid separator pipe connection of washing tower, vapour and liquid separator's bottom and water washing tank pipe connection, vapour and liquid separator and total flue gas fan pipe connection, total flue gas fan and incinerator pipe connection.
Further, the incineration device comprises a tubular furnace and a flame arrester; an air pipeline, a coke oven gas pipeline and a waste gas pipeline are arranged at the bottom of the tubular furnace; and a flame arrester is installed on the waste gas pipeline, and the top of the tubular furnace is connected with a desulfurization and denitrification system pipeline.
Further, the desulfurization and denitrification system comprises an ammonia pump, a denitrification reactor, a heat exchanger, a desulfurization tower and a gypsum slurry pump; the top of the denitration reactor is connected with a top pipeline of the incineration device, the side face of the denitration reactor is connected with an ammonia pump through a pipeline, the bottom of the denitration reactor is connected with a pipeline heat exchanger, the heat exchanger is circularly connected with a desulfurization tower, and a gypsum slurry pump is installed on the side face of the desulfurization tower.
A treatment method of a treatment device for waste gas in a tar treatment process comprises the following treatment steps:
s1, enabling waste gas generated in the deep processing of tar to enter a washing system through a waste gas pipeline and a negative pressure generator of the washing system, and spraying washing oil to a washing tower to wash and absorb organic matters in the waste gas;
s2, the waste gas after absorbing the organic matters enters a water washing system for further washing, and inorganic gas in the waste gas is purified;
s3, burning the waste gas in a tubular furnace of a burning device; converting the residual trace organic substances into CO2, H2O, NOX and SO 2;
and S4, removing NOX and SO2 from the incinerated waste gas by a desulfurization and denitrification system, and then discharging the waste gas after reaching the standard.
Further, in the step S1, a first circulation pump of the washing system pumps the wash oil in the washing tank into the negative pressure generator and the washing tower, the wash oil is sufficiently atomized through a nozzle at an inlet of the negative pressure generator, and the flow rate is increased at a throat of the negative pressure generator to generate negative pressure, so that the organic waste gas generated in the device is sucked into the negative pressure generator, and the gas and the liquid are sufficiently collided, contacted and absorbed, which is a first-stage absorption process; a washing tower is arranged on the washing tank, washing oil pumped by a first circulating pump forms a liquid layer on a sieve plate in the washing tower, organic waste gas enters from the bottom of the tower, rises through the liquid layer through a sieve mesh, and is discharged by bubbling, so that gas-liquid two phases are in counter-current full contact and are in a second-stage absorption process; removing most of organic waste gas after two-stage absorption process; the inlet and the outlet of the first circulating pump are respectively connected with a washing oil finished product tank and a raw material tar tank through pipelines, and after the washing oil absorption in the washing tank reaches saturation, the washing oil is sent back to the raw material tar tank for recycling and supplementing fresh washing oil.
Further, the waste gas absorbed by the organic substances in the step S2 enters a water washing system, the waste gas of each washing tower is collected and then enters the bottom of the washing tower, a second circulating pump drives the water in a water washing tank into the top of the washing tower to form a liquid layer on a sieve plate in the washing tower, the waste gas rises through a sieve hole to penetrate through the liquid layer, so that soluble substances in the waste gas are dissolved in the water, the waste gas after water washing is ejected from the washing tower and then enters a gas-liquid separator, the water vapor carried in the waste gas is impacted and settled to the bottom when encountering a baffle plate, a large amount of water vapor is intercepted and then enters the washing tank for recycling, and the waste gas is sent into a tubular furnace through a total flue gas fan to be incinerated; the inlet and the outlet of the second circulating pump are respectively connected with a production water pipeline and a raw material tar tank by pipelines, and water is sent back to the raw material tar tank for recycling after the water absorption in the washing tank reaches saturation, and fresh production water is supplemented.
Further, the flue gas washed by the water in the step S2 is sent into a tube furnace for incineration, and after high-temperature incineration, all the residual trace organic substances in the flue gas are converted into inorganic waste gas mainly comprising CO2, H2O, NOX and SO 2; the device is characterized in that a flame arrester is arranged at a waste gas inlet, an induced draft fan is arranged at an outlet of the tubular furnace, combusted gas is sent into a desulfurization and denitrification system for further treatment, flue gas discharged from the tubular furnace enters the top of a denitrification reactor, the flue gas is fully mixed with ammonia water sprayed by an ammonia water pump and then enters the denitrification reactor from the upper part, NOX and NH3 are subjected to reduction reaction to generate N2 and H2O under the catalytic action of a catalyst, the reacted flue gas is cooled by a heat exchanger and then enters a desulfurization tower, gypsum slurry is sent into the desulfurization tower by a gypsum slurry pump, SO2 in the waste gas reacts with CaCO3 to generate CaSO4, and the desulfurized clean flue gas is heated by the heat exchanger and then is discharged by a discharge chimney up to the standard.
Compared with the prior art, the invention has the beneficial effects that: the device can completely remove pollutants in the waste gas, reaches the national environmental protection emission standard, not only solves the pollution of the waste gas to the environment, but also improves the product yield and reduces the enterprise cost.
Drawings
FIG. 1: the system structure diagram of the invention;
FIG. 2: a washing system diagram;
FIG. 3: a water washing system diagram;
FIG. 4: a burning device diagram;
FIG. 5: a desulfurization and denitrification system diagram.
In the figure: 1. an exhaust gas conduit; 2. a washing system; 3. a water washing system; 4. an incineration device; 5. a desulfurization and denitrification system; 6. discharging a chimney; 21. a washing tank; 22. a washing tower; 23. a negative pressure generator; 24. a first circulating pump; 31. washing the tower with water; 32. a water washing tank; 33. a second circulating pump; 34. a gas-liquid separator; 35. a total flue gas fan; 41. a tube furnace; 42. a flame arrestor; 51. an ammonia pump; 52. a denitration reactor; 54. a heat exchanger; 55. a desulfurizing tower; 56. a gypsum slurry pump.
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.
Referring to fig. 1, the present invention provides an embodiment:
a treatment device for waste gas in a tar treatment process comprises a waste gas pipeline 1, a washing system 2, a water washing system 3, an incineration device 4, a desulfurization and denitrification system 5 and a discharge chimney 6; one end of the waste gas pipeline 1 is connected with a waste gas collecting device on the tar production equipment side through a pipeline, and the other end of the waste gas pipeline 1 is connected with a washing system 2 through a pipeline; the washing system 2 is connected with the washing system 3 through a pipeline, the washing system 3 is connected with the incineration device 4 through a pipeline, the incineration device 4 is connected with the desulfurization and denitrification system 5 through a pipeline, and the other end of the desulfurization and denitrification system 5 is connected with the discharge chimney 6. The washing system 2 comprises a washing tank 21, a washing tower 22, a negative pressure generator 23 and a first circulating pump 24; negative pressure generator 23 installs in the top of washing tank 21 and is connected with exhaust gas piping 1, scrubbing tower 22 is still installed to the top of washing tank 21, washing tank 21 is connected with circulating pump 24, circulating pump 24 is connected with scrubbing tower 22's upper end, circulating pump 24 and scrubbing tower 22 all with negative pressure generator 23 pipe connection, scrubbing tower 22 upper end and 3 pipe connections of washing system. Washing system 3 includes washing tower 31, water washing tank 32, No. two circulating pumps 33, vapour and liquid separator 34 and total flue gas fan 35, washing tower 31 and washing tower 22 pipe connection, water washing tank 32 and No. two circulating pumps 33 pipe connection, No. two circulating pumps 33 and washing tower 31's upper end pipe connection, washing tower 31's upper end and vapour and liquid separator 34 pipe connection, vapour and liquid separator 34's bottom and water washing tank 32 pipe connection, vapour and liquid separator 34 and total flue gas fan 35 pipe connection, total flue gas fan 35 and 4 pipe connection of incineration device. The incineration apparatus 4 comprises a tube furnace 41 and a flame arrester 42; an air pipeline, a coke oven gas pipeline and a waste gas pipeline are arranged at the bottom of the tubular furnace 41; and a flame arrester 42 is installed on the waste gas pipeline, and the top of the tubular furnace 41 is connected with the desulfurization and denitrification system 5 through a pipeline. The desulfurization and denitrification system 5 comprises an ammonia water pump 51, a denitrification reactor 52, a heat exchanger 54, a desulfurization tower 55 and a gypsum slurry pump 56; the top of the denitration reactor 52 is connected with the top of the incineration device 4 through a pipeline, the side surface of the denitration reactor 52 is connected with an ammonia water pump 51 through a pipeline, the bottom of the denitration reactor 52 is connected with a pipeline heat exchanger 54, the heat exchanger 54 is circularly connected with a desulfurization tower 55, and the side surface of the desulfurization tower 55 is provided with a gypsum slurry pump 56.
A treatment method of a treatment device for waste gas in a tar treatment process comprises the following treatment steps:
s1, enabling waste gas generated in deep processing of tar to enter a washing system 2 through a waste gas pipeline 1 and a negative pressure generator 23 of the washing system 2, spraying washing oil on a washing tower 22 to wash and absorb organic matters in the waste gas, driving the washing oil in a washing tank 21 into the negative pressure generator 23 and the washing tower 22 through a first circulating pump 24 of the washing system 2, fully atomizing the washing oil through a nozzle at the inlet of the negative pressure generator 23, increasing the flow speed at the throat of the negative pressure generator 23 to generate negative pressure, sucking the organic waste gas generated in the device into the negative pressure generator 23, and enabling the gas and the liquid to generate sufficient collision, contact and absorption, namely a first-stage absorption process; a washing tower 22 is arranged on the washing tank 21, washing oil pumped by a first circulating pump 24 forms a liquid layer on a sieve plate in the washing tower 22, organic waste gas enters from the bottom of the tower, rises through the liquid layer through a sieve mesh, and is discharged by bubbling, so that gas-liquid two-phase countercurrent fully contacts, and a second-stage absorption process is realized; removing most of organic waste gas after two-stage absorption process; the inlet and outlet of the first circulating pump 24 are respectively connected with a washing oil finished product tank and a raw material tar tank by pipelines, and after the washing oil absorption in the washing tank 21 reaches saturation, the washing oil is sent back to the raw material tar tank for recycling and supplementing fresh washing oil.
S2, enabling waste gas after absorbing organic matters to enter a water washing system 3 for further washing, purifying inorganic gas in the waste gas, enabling the waste gas after absorbing organic matters to enter the water washing system 3, enabling the waste gas of each washing tower to be converged and then enter the bottom of a water washing tower 31, driving water in a water washing tank 32 into the top of each washing tower by a second circulating pump 33, forming a liquid layer on a sieve plate in each washing tower, enabling the waste gas to rise through the liquid layer through a sieve hole, enabling soluble substances in the waste gas to be dissolved in the water, enabling the waste gas after water washing to be ejected out of the water washing tower 31 and then enter a gas-liquid separator 34, impacting and settling water vapor carried in the waste gas to the bottom when encountering a baffling baffle plate, intercepting a large amount of water vapor at the stage and then recycling the water vapor in the washing tank, and sending the; the inlet and outlet of the second circulating pump 33 are respectively connected with the raw material tar tank by pipelines and production water pipelines, and water is sent back to the raw material tar tank for recycling after the water absorption in the washing tank reaches saturation, and fresh production water is supplemented.
S3, burning the waste gas in the tubular furnace 41 of the burning device 4; converting residual trace organic substances into CO2, H2O, NOX and SO2, feeding the washed flue gas into a tubular furnace 41 for incineration, and converting all residual trace organic substances in the flue gas into inorganic waste gas mainly comprising CO2, H2O, NOX and SO2 after high-temperature incineration; a flame arrester 42 is arranged at a waste gas inlet, an induced draft fan is arranged at an outlet of the tubular furnace, the combusted gas is sent into a desulfurization and denitrification system 5 for further treatment, the flue gas from the tubular furnace enters the top of a denitrification reactor 52, is fully mixed with ammonia water sprayed by an ammonia water pump 51 in an inlet flue and then enters the denitrification reactor from the upper part, NOx and NH3 are subjected to reduction reaction to generate N2 and H2O under the catalytic action of a catalyst, the reacted flue gas is cooled by a heat exchanger 54 and then enters a desulfurization tower 55, the desulfurization tower 55 is fed by a gypsum slurry pump 56, SO2 in the waste gas reacts with CaCO3 to generate CaSO4, and the purified flue gas after desulfurization is heated by the heat exchanger 54;
and S4, removing NOX and SO2 from the incinerated waste gas by a desulfurization and denitrification system 5, and then discharging the waste gas after reaching the standard.
Through the above specific embodiments, the technical effects of the technical scheme adopted by the invention are as follows: the device can completely remove pollutants in the waste gas, reaches the national environmental protection emission standard, not only solves the pollution of the waste gas to the environment, but also improves the product yield and reduces the enterprise cost.
Claims (9)
1. A processing apparatus of tar processing procedure waste gas which characterized in that: comprises a waste gas pipeline (1), a washing system (2), a washing system (3), an incineration device (4), a desulfurization and denitrification system (5) and a discharge chimney (6); one end of the waste gas pipeline (1) is connected with a waste gas collecting device pipeline on the tar production equipment side, and the other end of the waste gas pipeline (1) is connected with a washing system (2) pipeline; the washing system (2) is connected with the washing system (3) through a pipeline, the washing system (3) is connected with the incineration device (4) through a pipeline, the incineration device (4) is connected with the desulfurization and denitrification system (5) through a pipeline, and the other end of the desulfurization and denitrification system (5) is connected with the discharge chimney (6).
2. The apparatus of claim 1, wherein the apparatus comprises: the washing system (2) comprises a washing tank (21), a washing tower (22), a negative pressure generator (23) and a first circulating pump (24); negative pressure generator (23) are installed in the top of washing tank (21) and are connected with exhaust gas conduit (1), scrubbing tower (22) are still installed to the top of washing tank (21), washing tank (21) are connected with circulating pump (24) No. one, circulating pump (24) are connected with the upper end of scrubbing tower (22), circulating pump (24) and scrubbing tower (22) all with negative pressure generator (23) pipe connection, scrubbing tower (22) upper end and water washing system (3) pipe connection.
3. The apparatus of claim 1, wherein the apparatus comprises: water washing system (3) is including washing tower (31), water washing jar (32), No. two circulating pump (33), vapour and liquid separator (34) and total flue gas fan (35), washing tower (31) and washing tower (22) pipe connection, water washing jar (32) and No. two circulating pump (33) pipe connection, the upper end pipe connection of No. two circulating pump (33) and washing tower (31), the upper end and vapour and liquid separator (34) pipe connection of washing tower (31), the bottom and the water washing jar (32) pipe connection of vapour and liquid separator (34), vapour and liquid separator (34) and total flue gas fan (35) pipe connection, total flue gas fan (35) and incineration device (4) pipe connection.
4. The apparatus of claim 1, wherein the apparatus comprises: the incineration device (4) comprises a tube furnace (41) and a flame arrester (42); an air pipeline, a coke oven gas pipeline and a waste gas pipeline are arranged at the bottom of the tubular furnace (41); and a flame arrester (42) is installed on the waste gas pipeline, and the top of the tubular furnace (41) is connected with a desulfurization and denitrification system (5) through a pipeline.
5. The apparatus of claim 1, wherein the apparatus comprises: the desulfurization and denitrification system (5) comprises an ammonia water pump (51), a denitrification reactor (52), a heat exchanger (54), a desulfurization tower (55) and a gypsum slurry pump (56); the top of the denitration reactor (52) is connected with the top pipeline of the incineration device (4), the side surface of the denitration reactor (52) is connected with an ammonia water pump (51) through a pipeline, the bottom of the denitration reactor (52) is connected with a pipeline heat exchanger (54), the heat exchanger (54) is circularly connected with a desulfurization tower (55), and the side surface of the desulfurization tower (55) is provided with a gypsum slurry pump (56).
6. The method according to any of claims 1 to 5, wherein the method comprises the steps of: the processing steps are as follows:
s1, enabling waste gas generated in the deep processing of tar to enter a washing system (2) through a waste gas pipeline (1) and a negative pressure generator (23) of the washing system (2), and spraying washing oil to a washing tower (22) to wash and absorb organic matters in the waste gas;
s2, the waste gas after absorbing the organic matters enters a water washing system (3) for further washing, and inorganic gas existing in the waste gas is purified;
s3, burning the waste gas in a tubular furnace (41) of a burning device (4); converting the residual trace organic substances into CO2, H2O, NOX and SO 2;
s4, removing NOX and SO2 from the incinerated waste gas by a desulfurization and denitrification system (5) and then discharging the waste gas after reaching the standard.
7. The method according to claim 6, wherein the method comprises the steps of: s1, pumping the washing oil in the washing tank (21) into a negative pressure generator (23) and a washing tower (22) by a first circulating pump (24) of the washing system (2), fully atomizing the washing oil through a nozzle at the inlet of the negative pressure generator (23), increasing the flow speed at the throat of the negative pressure generator (23) to generate negative pressure, sucking the organic waste gas generated in the device into the negative pressure generator (23), and fully colliding, contacting and absorbing the gas and the liquid to form a first-stage absorption process; a washing tower (22) is arranged on the washing tank (21), washing oil pumped by a first circulating pump (24) forms a liquid layer on a sieve plate in the washing tower (22), organic waste gas enters from the bottom of the tower, rises through the liquid layer through a sieve mesh, and is bubbled out, so that gas-liquid two-phase countercurrent full contact is realized, and a second-stage absorption process is realized; removing most of organic waste gas after two-stage absorption process; an inlet and an outlet of the first circulating pump (24) are respectively connected with a washing oil finished product tank and a raw material tar tank through pipelines, and after the washing oil absorption in the washing tank (21) reaches saturation, the washing oil is sent back to the raw material tar tank for recycling and supplementing fresh washing oil.
8. The method according to claim 6, wherein the method comprises the steps of: the waste gas absorbed by the organic substances in the step S2 enters a water washing system (3), the waste gas of each washing tower is converged and then enters the bottom of a water washing tower (31), water in a water washing tank (32) is pumped into the top of the washing tower by a second circulating pump (33), a liquid layer is formed on a sieve plate in the washing tower, the waste gas rises through sieve holes to penetrate through the liquid layer, soluble substances in the waste gas are dissolved in the water, the washed waste gas is ejected out of the water washing tower (31) and then enters a gas-liquid separator (34), water vapor carried in the waste gas is impacted and settled to the bottom when encountering a baffle plate, a large amount of water vapor is intercepted and then enters the washing tank for recycling, and the waste gas is sent into a tubular furnace through a total flue gas fan (35) to be incinerated; the inlet and the outlet of the second circulating pump (33) are respectively connected with a production water pipeline and a raw material tar tank by pipelines, and water is sent back to the raw material tar tank for recycling after the water absorption in the washing tank reaches saturation, and fresh production water is supplemented.
9. The method according to claim 6, wherein the method comprises the steps of: the flue gas washed by the water in the step S2 is sent into a tube furnace (41) for incineration, and after high-temperature incineration, all the residual trace organic substances in the flue gas are converted into inorganic waste gas mainly comprising CO2, H2O, NOX and SO 2; the flue gas inlet is equipped with spark arrester (42), be equipped with the draught fan at the tube furnace export, send into SOx/NOx control system (5) after the burning and carry out further processing, flue gas that comes out from the tube furnace enters into denitration reactor (52) top, in the denitration reactor is gone into from the upper portion after the sufficient mixing with ammonia water that ammonia water pump (51) sprayed in the import flue, under the catalytic action of catalyst, NOX and NH3 reduction reaction generate N2 and H2O, flue gas after the reaction gets into desulfurizing tower (55) after heat exchanger (54) cooling, gypsum thick liquid that desulfurizing tower (55) were sent into through gypsum thick liquid pump (56), SO2 and CaCO3 reaction in the waste gas generate CaSO4, clean flue gas after the desulfurization is through discharging chimney (6) discharge up to standard after heat exchanger (54) intensifies the temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010010321.5A CN111036039A (en) | 2020-01-06 | 2020-01-06 | Treatment device and treatment method for waste gas in tar treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521965A (en) * | 2021-01-29 | 2021-10-22 | 乌海宝杰新能源材料有限公司 | Efficient and energy-saving granulation tail gas treatment system and treatment process thereof |
| CN114522488A (en) * | 2021-12-25 | 2022-05-24 | 兖矿科蓝凯美特化工有限公司 | Workshop dust drainage washing processing system |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521965A (en) * | 2021-01-29 | 2021-10-22 | 乌海宝杰新能源材料有限公司 | Efficient and energy-saving granulation tail gas treatment system and treatment process thereof |
| CN114522488A (en) * | 2021-12-25 | 2022-05-24 | 兖矿科蓝凯美特化工有限公司 | Workshop dust drainage washing processing system |
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