CN111265952A - Bubbling scrubber for tail gas of cupola furnace - Google Patents
Bubbling scrubber for tail gas of cupola furnace Download PDFInfo
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- CN111265952A CN111265952A CN202010268347.XA CN202010268347A CN111265952A CN 111265952 A CN111265952 A CN 111265952A CN 202010268347 A CN202010268347 A CN 202010268347A CN 111265952 A CN111265952 A CN 111265952A
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- pipe
- tail gas
- water outlet
- gas distribution
- pool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
- B01D47/021—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath by bubbling the gas through a liquid bath
-
- 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
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
-
- 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
Abstract
A bubbling scrubber for tail gas of a cupola furnace comprises a scrubbing pool, a tail gas inlet pipe, a smoke guide pipe, a tail gas distribution pipe, a water inlet pipe, a water outlet main pipe and a blow-off pipe; one end of the tail gas inlet pipe is connected with a smoke exhaust pipe of the cupola furnace, and the other end of the tail gas inlet pipe is connected with a smoke guide pipe; one end of the smoke guide pipe is connected with a tail gas distribution pipe, and a baffle is arranged at the terminal of the tail gas distribution pipe; the tail gas distribution pipes are arranged horizontally and vertically, and each tail gas distribution pipe is provided with a downward smoke vent; the water inlet pipe is arranged above the gas washing pool and is controlled by a valve to feed water; the water outlet pipes are arranged at the lower part of the gas washing pool and are all connected with the water outlet main pipe, and the valve controls water outlet; the whole tail gas distribution pipe is arranged in a gas washing pool and soaked in washing water; the blow-off pipe is arranged at the bottom of the gas washing pool. The invention has simple structure, easy processing, low cost, convenient use and simple and convenient cleaning. The gas scrubber can effectively remove smoke dust and SO in the tail gas2And the pollution to the atmosphere is reduced. Is suitable forIn casting enterprises with cupola furnaces.
Description
Technical Field
The present invention relates to an apparatus for separating solid particles from a gas, and more particularly, to a bubbling scrubber for a blast furnace off-gas.
Background
As is well known, cupola furnaces are metal furnaces for melting pig iron for cast iron, which are lined with refractory bricks. The raw scrap iron, coke and flux of the cupola furnace are charged from the top and the required air is blown in from near the bottom. The waste gas generated in the production process of the cupola furnace contains smoke dust and SO2Is one of the main pollutants of foundries. If the waste gas is directly discharged without being purified, the waste gas can pollute the atmospheric environment. 500 per yearThe coal coke consumption of a casting enterprise with 0 set of anti-theft well covers is about 30t every year, and 314 ten thousand m of smoke emission can occur3A, ash production 18.25%, volatiles production 1.27%. The flue gas must be treated to reduce environmental pollution.
According to retrieval, Chinese patent application for tail gas bubbling washing and purifying is '2016210711521 high-concentration tail gas bubbling washing and purifying device', the purifier comprises a washing and purifying barrel and washing liquid in the barrel, and further comprises a pore plate provided with a plurality of small pores, the pore plate in the horizontal direction is arranged in the washing and purifying barrel and is arranged at the middle lower part of the washing liquid, an air outlet of an air inlet pipe of the washing and purifying barrel is positioned right below the pore plate, an overflow gap is arranged between the edge of the pore plate and the inner wall of the washing and purifying barrel, an overflow-proof cofferdam is arranged at the edge of the pore plate, an annular overflow-proof cofferdam is positioned below the pore plate, and an exhaust pipe is arranged at; 2016214474741, the device comprises a cylinder, a smoke inlet on the right side of the cylinder, a smoke outlet on the left side of the cylinder, a washing liquid supplement port on the lower part of the right end of the cylinder, an ash bucket connected to the lower part of the cylinder, an ash outlet at the lower end of the ash bucket, a transmission shaft arranged in the cylinder, a fixed spiral sheet arranged on the inner wall of the cylinder, a rotary dewatering sheet arranged on the transmission shaft, and a plurality of water-exciting bubble pores arranged on the rotary dewatering sheet on the right side of the transmission shaft. Both of these two patent technologies have the disadvantages of complicated equipment, troublesome processing and high cost.
Disclosure of Invention
The invention aims to provide a bubbling scrubber for tail gas of a cupola furnace, which overcomes the defects of complex structure and high manufacturing cost of the prior art by using a simple device structure and meets the requirement of scrubbing.
The bubbling scrubber for the tail gas of the cupola furnace consists of a scrubbing pool, a tail gas inlet pipe, a smoke guide pipe, a tail gas distribution pipe, a water inlet pipe, a water outlet main pipe and a blow-off pipe; one end of the tail gas inlet pipe is connected with a smoke exhaust pipe of the cupola furnace, and the other end of the tail gas inlet pipe is connected with a smoke guide pipe; one end of the smoke guide pipe is connected with a tail gas distribution pipe, and a baffle is arranged at the terminal of the tail gas distribution pipe; the tail gas distribution pipes are arranged horizontally and vertically according to requirements, and each tail gas distribution pipe is provided with a downward smoke vent; the water inlet pipe is arranged on the gas washing pool and is controlled by a valve to feed water; the water outlet pipes are arranged at the lower part of the gas washing pool, each water outlet pipe is connected with a water outlet main pipe, and the valve controls water outlet; the whole tail gas distribution pipe is arranged in a gas washing pool and soaked in washing water; the blow-off pipe is arranged at the bottom of the gas washing pool.
The gas washing tank is a rectangular cubic tank and is built by reinforced cement and lined with an anticorrosive material.
The tail gas inlet pipe penetrates through the tank wall from one end of the gas washing tank to enter the tank and is connected with the smoke guide pipe; the smoke guide pipe is divided into a plurality of outlets which are connected with the tail gas distribution pipe.
The tail gas distribution pipes are distributed in a horizontal row and a vertical row, wherein the horizontal row is 2-8 rows, and the vertical row is 1-3 rows; each tail gas distribution pipe is provided with 1-3 downward smoke exhaust holes, and the smoke exhaust holes can be one of circular, oval, polygonal or square.
The tail gas distribution pipe is supported and fixed by a bracket made of channel steel or angle steel in the pool.
The number of the water outlet pipes is 5-7, the water outlet pipes are uniformly distributed at the lower part of the rear end of the gas washing pool, and the water outlet pipes penetrate through the pool wall and then are collected into 1 water outlet main pipe and then are discharged into a waste water ditch.
The number of the blow-off pipes is 1-4, the blow-off pipes are respectively and uniformly distributed at the bottom of the gas washing pool, and the pipe openings are provided with plugs.
The invention relates to a method for using a bubbling scrubber for tail gas of a cupola furnace, and the principle is as follows: before the cupola furnace begins to exhaust tail gas, the control valve of the water inlet pipe is opened, clean water is put into the gas washing pool until all tail gas distributing pipes are submerged, and the control valve of the water outlet pipe is closed at the same time, so that the gas washing pool is kept at a certain water level. When the tail gas pressure is big enough, tail gas gets into from tail gas import pipe promptly and leads the tobacco pipe, and each tail gas distributing pipe is got into to the rethread leads the tobacco pipe, from the decurrent exhaust port of tail gas distributing pipe among getting into pond water, forms the tympanic bulla, smoke and dust and SO that tail gas smugglied secretly2Is captured by clean water and separated from tail gas, most dust particles in the tail gas are deposited in pool water, and SO2Dissolved by the pool water, and the relatively clean waste gas escapes from the water surface and is discharged into the atmosphere, and at the moment, the smoke dust and SO in the waste gas2Has reached the environmental protection discharge standard(ii) a And (4) accumulating the sediments in the pond to a certain amount, and digging out the sediment by adopting an artificial pond cleaning method. When the water in the gas washing pool is used for a period of time and fresh clear water needs to be replaced, the blockage of the blow-off pipe can be opened, partial waste water is discharged, clear water is supplemented, and the water level in the pool is kept; if the gas washing pool needs to be thoroughly cleaned, the drainage valve can be opened, the discharged wastewater is collected from the water outlet pipe and enters the water outlet main pipe, and then the wastewater is added with lime water for neutralization and then is discharged into the wastewater ditch after reaching the standard.
The bubbling scrubber for the tail gas of the cupola furnace has the advantages of simple structure, easy processing, low manufacturing cost, convenient use and simple and convenient cleaning. The gas scrubber can effectively remove smoke dust and SO in the tail gas2The exhausted waste gas effectively reduces the pollution to the atmosphere. Is suitable for casting enterprises with cupola furnaces.
Drawings
FIG. 1 is a top view of the bubbling scrubber for cupola off-gas of example 1,
FIG. 2 is a side view of the bubbling scrubber for cupola off-gas of example 1,
FIG. 3 is a schematic view showing the structure of the exhaust gas distribution pipe and its smoke exhaust holes,
fig. 4 is a schematic structural view of the sewage draining pipe and a piston thereof.
In the figure, 1 is a gas washing tank, 2 is a tail gas inlet pipe, 3 is a smoke guide pipe, 4 is a tail gas distribution pipe, 5 is a water inlet pipe, 6 is a water outlet pipe, 7 is a water outlet main pipe, 8 is a blow-off pipe, 9 is a baffle plate, 10 is a support, 11 is a blow-off plug, and 12 is a smoke exhaust hole.
Detailed Description
Example 1
The bubbling scrubber for cupola tail gas shown in figures 1 and 2 comprises a scrubbing pool 1, a tail gas inlet pipe 2, a smoke guide pipe 3, a tail gas distribution pipe 4, a water inlet pipe 5, a water outlet pipe 6, a water outlet main pipe 7 and a blow-off pipe 8; the gas washing tank 1 is a rectangular cubic tank and is built by reinforced cement and lined with an anticorrosive material; the tail gas inlet pipe 2 penetrates through the tank wall from one end of the gas washing tank to be connected with a smoke exhaust pipe of the cupola furnace, and the other end of the tail gas inlet pipe is connected with a smoke guide pipe 3; one end of the smoke guide pipe 3 is divided into 12 outlets which are connected with the tail gas distribution pipe 4, and the end of the tail gas distribution pipe 4 is provided with a baffle plate 9; the tail gas distribution pipes 4 are divided into 4 rows of transverse and 3 columns, and each tail gas distribution pipe 4 is provided with 3 rows of downward circular smoke exhaust holes 12; the tail gas distribution pipe 4 is supported and fixed by a bracket 10 made of channel steel and angle steel in the pool; the water inlet pipe 5 is arranged on the gas washing pool 1, and the water inlet pipe 5 is controlled by a valve; 5 water outlet pipes 6 are uniformly arranged at the lower part of the rear end of the gas washing pool 1, each water outlet pipe 1 penetrates through the pool wall and then is converged into a water outlet header pipe 7 to be connected with the water outlet header pipe, the valve is used for controlling water outlet, and wastewater is discharged into a wastewater ditch; the whole tail gas distribution pipe 4 is arranged in the gas washing pool 1 and soaked in washing water; 4 blow-off pipes 8 are arranged at 4 corners of the bottom of the gas washing pool 1, and a blow-off plug 11 is arranged at the pipe orifice.
The overall dimension of the gas washing pool 1 is 8m in length, 4m in width and 1.5m in height; the diameter of the tail gas inlet pipe 3 is 100mm, the diameter of the smoke guide pipe 3 is 200mm, the diameter of the tail gas distribution pipe 4 is 100mm, the diameter of the water inlet pipe 5 is 50mm, the diameter of the water outlet pipe 6 is 100mm, the diameter of the water outlet main pipe 7 is 150mm, and the diameter of the sewage discharge pipe 8 is 100 mm.
According to the monitoring of an environment monitoring station in the Beacon county in 2015, the dust particles in the tail gas discharged from the cupola furnace are 150 mg/m3(ii) a Containing SO2850mg/ m3The dust-containing particles in the waste gas discharged after passing through the bubbling scrubber can not be detected; containing SO270.6mg/m3。
Claims (7)
1. A bubbling scrubber for tail gas of a cupola furnace is characterized in that the bubbling scrubber consists of a scrubbing pool (1), a tail gas inlet pipe (2), a smoke guide pipe (3), a tail gas distribution pipe (4), a water inlet pipe (5), a water outlet pipe (6), a water outlet main pipe (7) and a blow-off pipe (8); one end of the tail gas inlet pipe (2) is connected with a smoke exhaust pipe of the cupola furnace, and the other end is connected with the smoke guide pipe (3); one end of the smoke guide pipe (3) is connected with the tail gas distribution pipe (4), and a baffle (13) is installed at the terminal of the tail gas distribution pipe (4); the tail gas distribution pipes (4) are arranged horizontally and vertically, and each tail gas distribution pipe (4) is provided with downward smoke exhaust holes (12) in rows; the water inlet pipe (5) is arranged on the gas washing pool (1), and the water inlet pipe (5) is controlled by a valve to feed water; the water outlet pipes (6) are arranged at the lower part of the gas washing pool (1), each water outlet pipe (1) is connected with a water outlet header pipe (7), and the valve controls water outlet; the whole tail gas distribution pipe (4) is arranged in the gas washing pool (1) and soaked in washing water; the blow-off pipe (8) is arranged at the bottom of the gas washing pool (1).
2. The bubbling gas scrubber according to claim 1, characterized in that the scrubbing basin (1) is a rectangular cubic basin built of reinforced cement lined with an anti-corrosive material.
3. The bubbling scrubber according to claim 1, characterized in that the tail gas inlet pipe (2) penetrates through the tank wall from one end of the scrubber tank (1) into the tank and is connected with the smoke guide pipe (3); the smoke guide pipe (3) is divided into a plurality of outlets which are connected with the tail gas distribution pipe (4).
4. The bubbling scrubber according to claim 1, wherein the tail gas distribution pipes (4) are distributed in horizontal rows and vertical rows, the horizontal rows are 2-8 rows, and the vertical rows are 1-3 rows; each tail gas distribution pipe (4) is provided with 1-3 downward smoke exhaust holes (12), and the smoke exhaust holes (12) can be one of circular, oval, polygonal or square.
5. The bubbling scrubber according to one of claims 1 or 4, characterized in that the exhaust gas distribution pipe (4) is supported and fixed in the scrubber basin (1) by brackets (10) made of channel steel and angle steel.
6. The bubbling scrubber according to claim 1, wherein the number of the water outlet pipes (6) is 5-7, the water outlet pipes are uniformly arranged at the lower part of the rear end of the scrubbing pool (1), and the water outlet pipes (6) penetrate through the pool wall and then are collected into 1 water outlet header pipe (7) outside the scrubbing pool (1) and then are discharged into a wastewater ditch.
7. The bubbling gas scrubber according to claim 1, wherein the number of the sewage discharge pipes (8) is 1-4, the sewage discharge pipes are respectively and uniformly distributed at the bottom of the gas scrubbing pool (1), and pipe orifices are blocked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010268347.XA CN111265952A (en) | 2020-04-08 | 2020-04-08 | Bubbling scrubber for tail gas of cupola furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010268347.XA CN111265952A (en) | 2020-04-08 | 2020-04-08 | Bubbling scrubber for tail gas of cupola furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111265952A true CN111265952A (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010268347.XA Pending CN111265952A (en) | 2020-04-08 | 2020-04-08 | Bubbling scrubber for tail gas of cupola furnace |
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| Country | Link |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11137957A (en) * | 1997-11-05 | 1999-05-25 | Chiyoda Corp | Desulfurizer for stack gas |
| CN201337876Y (en) * | 2008-12-19 | 2009-11-04 | 宁波金远东工业科技有限公司 | Gas-liquid distributor |
| CN202078849U (en) * | 2011-05-27 | 2011-12-21 | 长沙奥邦环保实业有限公司 | Bubbling device for removing acidic gas |
| CN103657384A (en) * | 2013-12-26 | 2014-03-26 | 天津彩意科技有限公司 | Bubbler |
| CN104174260A (en) * | 2014-09-01 | 2014-12-03 | 嵩县开拓者钼业有限公司 | Gas absorption tower and application method thereof |
| CN104307342A (en) * | 2014-11-07 | 2015-01-28 | 广西南宁华国环境科技有限公司 | Two-stage flue gas desulfurizing tower |
| CN205199283U (en) * | 2015-12-02 | 2016-05-04 | 昆明承曜建材有限公司 | Tail gas recovery unit in water -reducing agent production system |
| CN206064081U (en) * | 2016-09-22 | 2017-04-05 | 四川武胜春瑞医药化工有限公司 | A kind of highly concentrated tail gas bubble cleaning depurator |
| WO2018037504A1 (en) * | 2016-08-24 | 2018-03-01 | 千代田化工建設株式会社 | Method for removing impurities |
| CN209287031U (en) * | 2018-12-28 | 2019-08-23 | 国网安徽省电力有限公司电力科学研究院 | A kind of sulfur dioxide minimum discharge desulfurizer being bubbled combination tower based on spray |
| KR102043819B1 (en) * | 2019-02-07 | 2019-11-12 | 주식회사 케이티엘 | wet scrubber |
| CN210057764U (en) * | 2019-03-12 | 2020-02-14 | 中国石油化工股份有限公司 | Smoke dust removing, desulfurizing and white smoke eliminating tower |
-
2020
- 2020-04-08 CN CN202010268347.XA patent/CN111265952A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11137957A (en) * | 1997-11-05 | 1999-05-25 | Chiyoda Corp | Desulfurizer for stack gas |
| CN201337876Y (en) * | 2008-12-19 | 2009-11-04 | 宁波金远东工业科技有限公司 | Gas-liquid distributor |
| CN202078849U (en) * | 2011-05-27 | 2011-12-21 | 长沙奥邦环保实业有限公司 | Bubbling device for removing acidic gas |
| CN103657384A (en) * | 2013-12-26 | 2014-03-26 | 天津彩意科技有限公司 | Bubbler |
| CN104174260A (en) * | 2014-09-01 | 2014-12-03 | 嵩县开拓者钼业有限公司 | Gas absorption tower and application method thereof |
| CN104307342A (en) * | 2014-11-07 | 2015-01-28 | 广西南宁华国环境科技有限公司 | Two-stage flue gas desulfurizing tower |
| CN205199283U (en) * | 2015-12-02 | 2016-05-04 | 昆明承曜建材有限公司 | Tail gas recovery unit in water -reducing agent production system |
| WO2018037504A1 (en) * | 2016-08-24 | 2018-03-01 | 千代田化工建設株式会社 | Method for removing impurities |
| CN206064081U (en) * | 2016-09-22 | 2017-04-05 | 四川武胜春瑞医药化工有限公司 | A kind of highly concentrated tail gas bubble cleaning depurator |
| CN209287031U (en) * | 2018-12-28 | 2019-08-23 | 国网安徽省电力有限公司电力科学研究院 | A kind of sulfur dioxide minimum discharge desulfurizer being bubbled combination tower based on spray |
| KR102043819B1 (en) * | 2019-02-07 | 2019-11-12 | 주식회사 케이티엘 | wet scrubber |
| CN210057764U (en) * | 2019-03-12 | 2020-02-14 | 中国石油化工股份有限公司 | Smoke dust removing, desulfurizing and white smoke eliminating tower |
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