CN101601957B - Improved device for recovering, processing and recycling acidic waste gas - Google Patents

Improved device for recovering, processing and recycling acidic waste gas Download PDF

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Publication number
CN101601957B
CN101601957B CN 200810243279 CN200810243279A CN101601957B CN 101601957 B CN101601957 B CN 101601957B CN 200810243279 CN200810243279 CN 200810243279 CN 200810243279 A CN200810243279 A CN 200810243279A CN 101601957 B CN101601957 B CN 101601957B
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China
Prior art keywords
waste gas
gas absorption
accumulator tank
exhaust gas
absorption tower
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CN 200810243279
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Chinese (zh)
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CN101601957A (en
Inventor
匡优新
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匡优新
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Publication of CN101601957B publication Critical patent/CN101601957B/en

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Abstract

The invention provides an improved device for recovering, processing and recycling acidic waste gas, which can recover and process the acidic gas to enable the acidic gas to be continuously recycled in a pickling line to ensure that the waste gas can not be discharged into the atmosphere, thereby achieving the purpose of zero draining of the waste gas. The improved device for recovering, processing and recycling acidic waste gas comprises a blower and a waste gas absorber, wherein the waste gas absorber comprises a waste gas absorbing tower and a recovering tank, wherein a gas transmission pipeline of the blower is connected with the waste gas absorbing tower; the recovering tank is connected with a pipeline at the lower part of the waste gas absorbing tower and is connected with a pipeline of a mixing device; and the mixing device is connected with the pickling line.

Description

A kind of recycling EGR of acid waste gas of improvement

(1) technical field

The present invention relates to the waste gas treatment equipment field, be specially a kind of recycling EGR of acid waste gas of improvement.

(2) background technology

In the pickler of metallurgy industry, acid waste gas processing unit is the waste gas tower at present, it is that the acid waste gas that will produce in acid cleaning process sucks purifying column with blower fan, directly enter in atmosphere after spraying with alkali lye in purifying column, such processing procedure had both needed to consume a large amount of alkaline resources, can not guarantee the compliance rate of waste gas again, still to environment.

(3) summary of the invention

For the problems referred to above, the invention provides a kind of recycling EGR of acid waste gas of improvement, it can be recycling in pickling lines with continuing after the sour gas recycling, guaranteed that waste gas does not enter atmosphere, reaches zero waste gas emission.

Its technical scheme is such: it comprises blower fan, exhaust gas absorption device, described exhaust gas absorption device comprises waste gas absorption tower, the gas pipeline of described blower fan connects described waste gas absorption tower, it is characterized in that: described exhaust gas absorption device also comprises accumulator tank, described accumulator tank is connected with described waste gas absorption tower lower pipeline and is connected with the blending device pipeline, and described blending device is connected with pickling lines.

It is further characterized in that: described exhaust gas absorption device is provided with two covers, is respectively one-level absorption plant and sponge oil unit; Described two cover exhaust gas absorption device are connected in series; Described two waste gas absorption towers connect; The accumulator tank of described two cover exhaust gas absorption device has respectively two, forms closed circuit with corresponding described waste gas absorption tower respectively after described two accumulator tank parallel connections; Described accumulator tank is corresponding to be connected; The accumulator tank of described one-level absorption plant is connected with blending device; Be separately installed with acidometer in the accumulator tank of described one-level absorption plant; The waste gas absorption tower rear portion of described secondary exhaust gas absorption device also is connected with gas-liquid separator; Described gas-liquid separator gas outlet connects into pickling lines, and its delivery port connects the adapted tank; Described adapted tank is connected with the accumulator tank of described secondary exhaust gas absorption device.

Use the recycling EGR of acid waste gas of the present invention, its beneficial effect is: it can waste gas recycling, accomplishes zero waste gas emission, can meet the requirement of environmental protection, can play the effect that economizes on resources, reduces production costs again.

(4) description of drawings

Fig. 1 is apparatus of the present invention structural representation.

(5) specific embodiment

See Fig. 1, the present invention includes blower fan 1, exhaust gas absorption device, exhaust gas absorption device comprises waste gas absorption tower and accumulator tank, and blower fan 1 pipeline connects waste gas absorption tower, accumulator tank is connected with the waste gas absorption tower lower pipeline and is connected with blending device 3 pipelines, and blending device 3 is connected with pickling lines 4.In the present invention, exhaust gas absorption device is provided with two covers, is respectively one-level absorption plant and sponge oil unit; Wherein the one-level absorption plant comprise one-level waste gas absorption tower 2, accumulator tank 6,7, accumulator tanks 6,7 in parallel after with one-level waste gas absorption tower 2 composition closed circuits; Sponge oil unit comprises secondary waste gas absorption tower 9, secondary recovery groove 10,11, secondary recovery groove 10,11 rear and secondary waste gas absorption tower 9 composition closed circuits in parallel; Two cover exhaust gas absorption device are connected in series; One-level waste gas absorption tower 2 is connected connection with the secondary waste gas absorption tower; Accumulator tank 6 and secondary recovery groove 10, accumulator tank 7 and secondary recovery groove 11 are connected respectively; Be separately installed with acidometer 5 in accumulator tank 6,7, the accumulator tank 6,7 of one-level absorption plant also is connected with blending device 3 respectively; The waste gas absorption tower rear portion of secondary exhaust gas absorption device also is connected with gas-liquid separator 8; Gas-liquid separator 8 gas outlets connect into pickling lines 4, and its delivery port connects adapted tank 12; Adapted tank 12 is connected with the secondary recovery groove 10,11 of described secondary exhaust gas absorption device, and the arrow in figure represents the trend of waste gas.

describe the course of work of the present invention below in conjunction with accompanying drawing: the acid mist gas that pickling lines 4 produces is inhaled into by blower fan 1 and carries out the cold water spray-absorption in one-level waste gas absorption tower 1, the very fast formation acid solution soluble in water of acid mist gas also flows into an accumulator tank 6 (or 7), an accumulator tank 6, 7 take turns and change jobs, the acidometer that is installed in accumulator tank 6 (or 7) detects acid solution, when acid strength reaches 10%~15%, accumulator tank 6 autoshutdown liquid feed valves are also opened the valve that is connected with blending device 3, it is that to be hybridly prepared into concentration be to be transmitted back to pickling lines by pipeline after 25% acid solution to continue to use for 30%~33% acid solution that acid solution enters blending device 3 and concentration, when acid strength lower than 10% the time, acid solutions in accumulator tank 6 are back to that one-level waste gas absorption tower 2 is interior to be absorbed with acid mist gas again as shower water, then acid solution enters accumulator tank 6 and carries out concentration again and detect, when concentration reaches 10%~15%, acid solution enters blending device, and this moment, an accumulator tank 7 carried out work, and in waste gas absorption tower, 2 accumulator tanks 7 of acid solutions inflow that absorb carry out the concentration detection of acid solution, as accumulator tank 6 repetitive cycling job, the one-level exhaust gas absorption device reaches 80% left and right for the absorptivity of acid mist gas, absorb processing acid mist gas enters the secondary waste gas absorption tower that is connected with one-level waste gas absorption tower 2 and carries out secondary spraying and absorb, its circulation absorption process is identical with the one-level exhaust gas absorption device, because the systemic acid mist gas flow of secondary waste gas absorption tower is few, it is lower through the acid strength after spray-absorption, when in secondary recovery groove 10 (or 11), its concentration reaches 2%~3%, accumulator tank liquid feed valve autoshutdown acid solution enters an accumulator tank 6 (or 7) that is attached thereto, mix with the acid solution in an accumulator tank 6 (or 7) and carry out the concentration detection, if concentration reaches 10%~15% be admitted to blending device 3 and be mixed, if concentration is lower than 10% be back to waste gas absorption tower 2 and enter again spray-absorption, the acid mist gas that does not also absorb fully in secondary waste gas absorption tower 9, can enter the gas-liquid separator 8 that is attached thereto and carry out last separate absorbent, isolated air is sent into pickling lines via air outlet, can strengthen the mobility of workshop air, improve the quality of workshop air, acid solution after separate absorbent enters adapted tank 12 through delivery port, enter again the secondary recovery groove 10 (or 11) that is connected with adapted tank 12, carry out the concentration detection after mixing with the acid solution in secondary recovery groove 10 (or 11), if concentration reaches 2%~3%, acid solution is sent in an accumulator tank 6 (or 7), if concentration is lower than 2% be back in the secondary waste gas absorption tower as spray liquid and continue to absorb.The above course of work moves in circles.

Apparatus of the present invention mainly can be processed HCL, HF, H 2SO 4, NaOH, H 2The water-soluble gas such as S according to different gas, adopt different absorbents.

Claims (3)

1. the recycling EGR of the acid waste gas of an improvement, it comprises blower fan, exhaust gas absorption device, described exhaust gas absorption device comprises waste gas absorption tower, the gas pipeline of described blower fan connects described waste gas absorption tower, it is characterized in that: described exhaust gas absorption device also comprises accumulator tank, described accumulator tank is connected with described waste gas absorption tower lower pipeline and is connected with the blending device pipeline, and described blending device is connected with pickling lines; Described exhaust gas absorption device is provided with two covers, is respectively one-level absorption plant and sponge oil unit, and two cover exhaust gas absorption device are connected in series; Two waste gas absorption towers of two cover exhaust gas absorption device connect; The accumulator tank of two cover exhaust gas absorption device has respectively two, forms closed circuit with corresponding described waste gas absorption tower respectively after two accumulator tank parallel connections; Two groups of accumulator tanks are connected respectively; The accumulator tank of described one-level absorption plant is connected with blending device; Be separately installed with acidometer in the accumulator tank of described one-level absorption plant; The waste gas absorption tower rear portion of waste gas sponge oil unit also is connected with gas-liquid separator.
2. a kind of recycling EGR of acid waste gas of improvement according to claim 1 is characterized in that: described gas-liquid separator gas outlet connects into pickling lines, and its delivery port connects adapted tank.
3. a kind of recycling EGR of acid waste gas of improvement according to claim 2, it is characterized in that: described adapted tank is connected with the accumulator tank of waste gas sponge oil unit.
CN 200810243279 2008-12-23 2008-12-23 Improved device for recovering, processing and recycling acidic waste gas CN101601957B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200810243279 CN101601957B (en) 2008-12-23 2008-12-23 Improved device for recovering, processing and recycling acidic waste gas

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Application Number Priority Date Filing Date Title
CN 200810243279 CN101601957B (en) 2008-12-23 2008-12-23 Improved device for recovering, processing and recycling acidic waste gas

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CN101601957A CN101601957A (en) 2009-12-16
CN101601957B true CN101601957B (en) 2013-06-19

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Cited By (1)

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CN104099627B (en) * 2014-07-29 2016-06-08 安徽省宁国市东波紧固件有限公司 A kind of descaling bath with acid recovery function

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CN102872681A (en) * 2011-07-14 2013-01-16 天津市绿净源环保科技有限公司 Reuse method of acid gas treatment wastewater
CN102515107B (en) 2011-10-31 2013-01-02 深圳市新星轻合金材料股份有限公司 Zero pollution recovery system of safe anhydrous hydrogen fluoride production
CN102974194A (en) * 2012-12-25 2013-03-20 李书庆 Waste gas zero emission water circulation treatment device and method
CN105311938A (en) * 2014-06-26 2016-02-10 东至天孚化工有限公司 Replaceable-type acid fog purifying device
CN105233629B (en) * 2015-09-29 2018-03-02 厦门钨业股份有限公司 A kind of gas absorbing device and technique
CN105327594B (en) * 2015-11-12 2018-05-18 中国石油化工股份有限公司青岛安全工程研究院 Styrene waste gases processing unit
CN105483733A (en) * 2015-12-08 2016-04-13 无锡华工薄板有限公司 Hydrogen removing system of acid washing tank for strip steel
CN105483740A (en) * 2015-12-08 2016-04-13 无锡华工薄板有限公司 Hydrogen treatment system for strip steel acid pickling
CN105536474B (en) * 2015-12-24 2018-03-27 浙江埃森化学有限公司 A kind of device and its implementation that hydrogen fluoride in tail gas is removed using dynamic wave
CN105536442A (en) * 2015-12-31 2016-05-04 天津君议台科技发展有限公司 Acid regeneration acid mist recycling and purifying device
CN107376524B (en) * 2017-06-27 2019-10-18 苏州克莱尔环保科技有限公司 Oil plant acid waste gas processing system

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN104099627B (en) * 2014-07-29 2016-06-08 安徽省宁国市东波紧固件有限公司 A kind of descaling bath with acid recovery function

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