CN114146546A - High-efficient wet flue gas desulfurization is dust removal processing apparatus in coordination - Google Patents
High-efficient wet flue gas desulfurization is dust removal processing apparatus in coordination Download PDFInfo
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- CN114146546A CN114146546A CN202111532292.XA CN202111532292A CN114146546A CN 114146546 A CN114146546 A CN 114146546A CN 202111532292 A CN202111532292 A CN 202111532292A CN 114146546 A CN114146546 A CN 114146546A
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- flue gas
- dust removal
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- water washing
- wet desulphurization
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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
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
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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
- B01D53/14—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
- B01D53/18—Absorbing units; Liquid distributors therefor
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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
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
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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
- B01D53/96—Regeneration, reactivation or recycling of reactants
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Abstract
The invention discloses a high-efficiency wet desulphurization and dust removal cooperative treatment device which is of a tower body structure, wherein the interior of the tower body is divided into an absorption section, a washing section and a demisting and dust removal section from bottom to top; the absorption section comprises a flue gas inlet (3), a tower bottom slurry pool (1), a spraying device (4), a tower plate (5), an air lifting cap and a first circulating pump (2); the water washing section comprises a water washing device (7) and a second circulating pump (6); the demisting and dedusting section comprises a demister (8), a cleaning device, a wet bag type dust collector (9), a dust collector ash removal device (11) and a flue gas outlet (10). The invention can reach SO2The emission index of the high-yield high-; the flue gas purification effect is ensured, and the realization of the ultralow emission index is ensured.
Description
Technical Field
The invention belongs to the technical field of industrial flue gas desulfurization and dust removal treatment, and particularly relates to a high-efficiency wet desulfurization and dust removal synergistic treatment device.
Background
As is well known, China is a country with more coal and less oil, and coal resources are important components of energy in China. In 2016, the coal power generation ratio exceeds 60 percent and the power generation ratio exceeds 70 percent, thereby meeting the important position of coal in the energy structure of China. The industrial boiler mainly burns coal in the industries of chemical industry, electric power, coking, smelting, carbon, production and the like. The flue gas exhaust gas discharged by the boiler of the coal-fired power plant and various industrial kilns contains SO2Harmful components such as nitrogen oxides are the main causes of damaging the ecological environment, namely acid rain and haze, and the sustainable development of the economic society of China and the survival and health of human beings are seriously influenced. Therefore, the deep purification of the coal-fired flue gas becomes a great economic and civil problem which is generally concerned and urgently needed to be solved in China.
As the haze weather of China is more serious in recent years, national and local governments increase the intensity of controlling smoke emission pollutants, and provide a series of strict emission standards. The national file requirement reaches 2020, the coal-fired unit is active at 60W kilowatts and above, the public coal-fired generating set with 30W kilowatts and above in eastern areas, the self-provided coal-fired generating set with 10W kilowatts and above and other conditional coal-fired generating sets, the emission concentration of the air pollutants after the transformation basically reaches or approaches the emission limit value of the gas turbine set, the smoke dust is less than or equal to 10mg/Nm, SO is planted in a year2And (3) carrying out dry weight cultivation under the conditions of less than or equal to 35mg/Nm and no more than 50mg/Nm on the nitrogen oxide.
The traditional process is mainly carried out in steps of desulfurization and dust removal, SO that combined desulfurization and dust removal are realized, and the graded treatment mode has the defects of large floor area, high investment and operation cost and SO2The removal efficiency of pollutants such as aerosol particles, dust, soluble pollutants and the like is not ideal enoughHas the disadvantages of low cost and high safety.
Disclosure of Invention
The invention provides a high-efficiency wet desulphurization and dust removal cooperative treatment device aiming at the defects in the prior art.
The technical solution of the invention is as follows: a high-efficiency wet desulphurization and dust removal combined treatment device is of a tower body structure, wherein the interior of the tower body is divided into an absorption section, a washing section and a demisting and dust removal section from bottom to top; the absorption section comprises a flue gas inlet, a tower bottom slurry pool, a spraying device, a tower plate, an air lifting cap and a first circulating pump; the water washing section comprises a water washing device and a second circulating pump; the demisting and dedusting section comprises a demister, a cleaning device, a wet bag type dust collector, a dust collector ash removal device and a flue gas outlet.
According to the embodiment of the invention, a flue gas inlet of the absorption section is arranged above the tower bottom slurry pool, the spraying device is arranged above the flue gas inlet, and the first circulating pump is externally connected with the tower bottom slurry pool and the spraying device; a tower plate is arranged above the spraying device, and the gas lifting cap is arranged on the tower plate; the tower plate and the air lifting cap are made of metal, glass fiber reinforced plastic or plastic; the air lifting cap is of a rectangular, circular, rhombic or polygonal structure, the top of the air lifting cap is provided with a rain-proof brim to prevent spray liquid of the washing device from entering the lower part of the tower plate, and the side surface is provided with holes to ensure the circulation of flue gas.
According to an embodiment of the invention, the second circulation pump connects the tray and the water washing device from the outside.
According to the embodiment of the invention, the spraying devices are 3-5 layers.
According to the embodiment of the invention, the number of the water washing devices is 1-3.
According to an embodiment of the present invention, the demister and the cleaning device are installed between the water washing device and the wet type bag collector.
According to an embodiment of the invention, the flue gas outlet is arranged above the wet bag house.
According to an embodiment of the invention, the demister is of a ridge type, a flat plate type or a wire mesh type.
According to the embodiment of the invention, the filter bag of the wet bag type dust collector is made of glass fiber, metal fiber and plastic fiber; the dust remover ash cleaning device is arranged at the top or the side of the filter bag.
The beneficial technical effects of the invention are as follows: because the absorption section is provided with the multilayer spraying device, most of impurities, dust and SO can be absorbed and removed through full mixing reaction2The first circulating pump pumps and circulates the tower bottom slurry to the spraying device for repeated spraying reaction, so that the full absorption is ensured; the water washing section is provided with a plurality of layers of water washing devices, so that most water-soluble pollutants can be removed, the process water is pumped by the second circulating pump and circulated to the water washing devices for repeated water washing, and the full washing is ensured; through multilayer spraying and multilayer water washing, the treatment of impurities, dust, soluble pollutants and SO is improved2Because the demisting and dedusting section is provided with the demister and the wet bag type dust collector, most water mist and aerosol particles can be removed, and most impurities, dust, soluble pollutants and SO in the industrial flue gas are ensured due to the three-section structure2The removal of pollutants such as aerosol particles and the like can completely reach SO after being treated by the high-efficiency wet desulphurization synergistic treatment device2The emission index of the high-yield high-; the flue gas purification effect is ensured, and the realization of the ultralow emission index is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a high-efficiency wet desulfurization and dust removal processing device.
Fig. 2 is a schematic view of a wet bag house.
In the figure: 1-a tower bottom slurry pool; 2-a first circulation pump; 3-a flue gas inlet; 4-a spraying device; 5-tower plate; 6-a second circulation pump; 7-a water washing device; 8-a demister; 9-wet bag type dust collector; 10-a flue gas outlet; 11-dust remover ash removal device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
A high-efficiency wet desulphurization and dust removal processing device is of a tower body structure, wherein a tower bottom slurry pool 1, a flue gas inlet, a spraying device 4, a tower plate 5, an air lifting cap, a washing device 7, a demister 8, a cleaning device, a wet bag type dust collector 9 and a flue gas outlet 10 are arranged in the tower body from bottom to top; the first circulating pump 2 is externally connected with the tower bottom slurry pool 1 and the spraying device 4; the second circulation pump 6 connects the tray 5 and the water washing device 7 from the outside.
The lower side of a flue gas inlet 3 in the absorption section is a tower bottom slurry pool 1, the upper side of the flue gas inlet 3 is a spraying device 4, the tower bottom slurry pool 1 is communicated with the spraying device 4 through a first circulating pump 2, the upper side of the spraying device 4 is a tower plate 5 and an air lifting cap, and the absorption section is communicated with the water washing section through the tower plate 5 and the air lifting cap.
The washing device 7 in the washing section is arranged on the upper sides of the tower plate 5 and the gas lift cap, the demister 8 and the washing device thereof are arranged on the upper side of the washing device 7, and the process water above the tower plate 5 and the gas lift cap is communicated with the washing device 7 through the second circulating pump 6.
A flue gas outlet 10 is arranged above the wet bag type dust collector 9 in the demisting and dedusting section.
The specific implementation mode is as follows: the flue gas inlet 3 is communicated with industrial flue gas, the industrial flue gas enters the tower body and then passes through the spraying device 4, and SO in the flue gas2The full reaction is obtained, partial soluble pollutants and dust are removed, the spraying slurry falls into a tower bottom slurry pool 1 and circulates to a spraying device 4 through a first circulating pump 2, the flue gas passes through the spraying device 4 and then enters a water washing section through a tower plate 5 and a gas lifting cap, most of the soluble pollutants and partial dust are removed after being washed by a large amount of industrial water of a water washing device 7, the washing process water falls into the upper side of the tower plate 5 and enters a circulating water tank through a pipeline and circulates to the water washing device 7 through a second circulating pump 6, the flue gas of the tower plate 5 passes through the water washing device 7 and then passes through a demister 8, most of water drops in the flue gas are removed, after passing through the demister 8, the flue gas is further removed with water drops, aerosol particles and dust in the flue gas through a wet bag type dust collector 9 to form clean flue gas, and the clean flue gas is discharged out of a tower body 10.
Through multilayer spraying reaction, multilayer washing and removal of a wet bag type dust collector, SO in industrial flue gas is improved2And dust, soluble pollutants, aerosol and other pollutants.
The absorption section comprises: the tower bottom slurry pool 1, a first circulating pump 2, a flue gas inlet 3, 3-5 layers of spraying devices 4, a tower plate 5 and an air lifting cap.
A plurality of shower nozzles are arranged on 3~5 layers of spray set 4.
The number of spraying layers and the number of spray heads are determined within the range of 3-5 layers by the factors such as the amount of flue gas, the diameter of the tower and the like.
Slurry at the bottom of the tower is circulated to a multi-layer spraying device 4 by a first circulating pump 2.
The water washing section comprises: a water washing device 7 and a second circulating pump 6.
A plurality of spray heads are arranged on the water washing device 7.
The number of washing layers and the number of spray heads are determined within the range of 1-3 layers by the factors such as the amount of flue gas, the diameter of the tower and the like.
The demisting and dedusting section comprises a demister 8 and a cleaning device thereof, a wet bag type dust collector 9, a dust collector ash removal device 11 and a flue gas outlet 10.
The material of the filter bag of the wet bag type dust collector 9 is glass fiber, metal fiber, plastic fiber and the like.
The number of filter bags and bag cages of the wet bag type dust collector 9 is determined by the factors such as the amount of smoke, the diameter of the tower and the like.
The wet bag house 9 is schematically shown in fig. 2.
Finally, it should be noted that the above embodiments are only 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 examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may 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 (9)
1. A high-efficiency wet desulphurization and dust removal combined treatment device is a tower body structure and is characterized in that the interior of the tower body is divided into an absorption section, a washing section and a demisting and dust removal section from bottom to top; the absorption section comprises a flue gas inlet (3), a tower bottom slurry pool (1), a spraying device (4), a tower plate (5), an air lifting cap and a first circulating pump (2); the water washing section comprises a water washing device (7) and a second circulating pump (6); the demisting and dedusting section comprises a demister (8), a cleaning device, a wet bag type dust collector (9), a dust collector ash removal device (11) and a flue gas outlet (10).
2. The high-efficiency wet desulphurization synergistic dedusting treatment device according to claim 1, wherein the flue gas inlet (3) of the absorption section is arranged above the tower bottom slurry pool (1), the spraying device (4) is arranged above the flue gas inlet (3), and the first circulating pump (2) is externally connected with the tower bottom slurry pool (1) and the spraying device (4); a tower plate (5) is arranged above the spraying device (4), and a gas lifting cap is arranged on the tower plate (5); the tower plate (5) and the air lifting cap are made of metal, glass fiber reinforced plastic or plastic; the air lifting cap is of a rectangular, circular, rhombic or polygonal structure, and the top of the air lifting cap is provided with a rain-proof brim.
3. The apparatus of claim 1, wherein the second circulation pump (6) is externally connected to the tray (5) and the water washing device (7).
4. The efficient wet desulphurization and dust removal combined treatment device as claimed in claim 1, wherein the number of the spraying devices (4) is 3-5.
5. The efficient wet desulphurization and dust removal combined treatment device as claimed in claim 1, wherein the number of the water washing devices (7) is 1-3.
6. The high-efficiency wet desulphurization synergistic dedusting treatment device as set forth in claim 1, wherein the demister (8) and the cleaning device are installed between the water washing device (7) and the wet bag filter (9).
7. The high-efficiency wet desulphurization dust removal processing device according to claim 1, wherein the flue gas outlet (10) is arranged above the wet bag filter (9).
8. The high-efficiency wet desulphurization and dust removal combined treatment device as claimed in claim 1, wherein the demister (8) is ridge type, flat plate type or wire mesh type.
9. The efficient wet desulphurization and dust removal combined treatment device as claimed in claim 1, wherein the filter bag of the wet bag filter (9) is made of glass fiber, metal fiber or plastic fiber; the dust remover ash cleaning device (11) is arranged on the top or the side of the filter bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111532292.XA CN114146546A (en) | 2021-12-15 | 2021-12-15 | High-efficient wet flue gas desulfurization is dust removal processing apparatus in coordination |
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| CN202111532292.XA CN114146546A (en) | 2021-12-15 | 2021-12-15 | High-efficient wet flue gas desulfurization is dust removal processing apparatus in coordination |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0435720A (en) * | 1990-05-31 | 1992-02-06 | Mitsubishi Heavy Ind Ltd | Method for recovering heat in apparatus for wet-desulfurizing stack gas |
| JP2006326458A (en) * | 2005-05-25 | 2006-12-07 | Able:Kk | Desulfurization method and apparatus of exhaust gas containing sulfur oxide |
| CN205699958U (en) * | 2016-04-14 | 2016-11-23 | 中国神华能源股份有限公司 | Purification dust removal system |
| CN106823740A (en) * | 2017-01-23 | 2017-06-13 | 上海大学 | Charcoal element stove, the ammonia process of desulfurization of coke oven flue gas multisection type and dedusting absorption tower |
| CN206652387U (en) * | 2017-02-27 | 2017-11-21 | 上海明净环保科技有限公司 | A kind of ammonia desulfuration equipment of resourcebility |
| CN107413176A (en) * | 2017-09-26 | 2017-12-01 | 航天环境工程有限公司 | A kind of ammonia process of desulfurization dedusting flue gas minimum discharge system and application |
| CN206746299U (en) * | 2017-03-20 | 2017-12-15 | 南京碧林环保科技有限公司 | Absorption tower for carbon baking furnace flue gas desulfurization |
| CN111888896A (en) * | 2020-08-06 | 2020-11-06 | 山东国舜建设集团有限公司 | Dust removal device and method for lime-gypsum wet desulfurization tower |
| CN112169568A (en) * | 2020-09-30 | 2021-01-05 | 北京航天环境工程有限公司 | Desulfurization, dedusting and demisting system for deeply removing ultrafine flue gas dust and application |
-
2021
- 2021-12-15 CN CN202111532292.XA patent/CN114146546A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0435720A (en) * | 1990-05-31 | 1992-02-06 | Mitsubishi Heavy Ind Ltd | Method for recovering heat in apparatus for wet-desulfurizing stack gas |
| JP2006326458A (en) * | 2005-05-25 | 2006-12-07 | Able:Kk | Desulfurization method and apparatus of exhaust gas containing sulfur oxide |
| CN205699958U (en) * | 2016-04-14 | 2016-11-23 | 中国神华能源股份有限公司 | Purification dust removal system |
| CN106823740A (en) * | 2017-01-23 | 2017-06-13 | 上海大学 | Charcoal element stove, the ammonia process of desulfurization of coke oven flue gas multisection type and dedusting absorption tower |
| CN206652387U (en) * | 2017-02-27 | 2017-11-21 | 上海明净环保科技有限公司 | A kind of ammonia desulfuration equipment of resourcebility |
| CN206746299U (en) * | 2017-03-20 | 2017-12-15 | 南京碧林环保科技有限公司 | Absorption tower for carbon baking furnace flue gas desulfurization |
| CN107413176A (en) * | 2017-09-26 | 2017-12-01 | 航天环境工程有限公司 | A kind of ammonia process of desulfurization dedusting flue gas minimum discharge system and application |
| CN111888896A (en) * | 2020-08-06 | 2020-11-06 | 山东国舜建设集团有限公司 | Dust removal device and method for lime-gypsum wet desulfurization tower |
| CN112169568A (en) * | 2020-09-30 | 2021-01-05 | 北京航天环境工程有限公司 | Desulfurization, dedusting and demisting system for deeply removing ultrafine flue gas dust and application |
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