CN101862586B - System for industrial waste gas treatment and salt regeneration - Google Patents
System for industrial waste gas treatment and salt regeneration Download PDFInfo
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- CN101862586B CN101862586B CN2010102238410A CN201010223841A CN101862586B CN 101862586 B CN101862586 B CN 101862586B CN 2010102238410 A CN2010102238410 A CN 2010102238410A CN 201010223841 A CN201010223841 A CN 201010223841A CN 101862586 B CN101862586 B CN 101862586B
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Abstract
The invention relates to a system for industrial waste gas treatment and salt regeneration, which comprises a waste gas treatment device, a neutralization deslagging device, a salt liquid concentration device, a main water supply pipe, an alkali liquid feeding tank and a hydrochloric acid storage tank, wherein the waste gas treatment device is provided with absorption towers No.1-No.5, a gas-liquid separator, a blender, an acid liquid clarifying tank and an alkali liquid transit tank; the neutralization deslagging device is provided with a neutralization mixing kettle, an impurity elimination tank, a filter press and a salt liquid transit tank; and the salt liquid concentration device is provided with a preheater, a heater, an evaporator, a crystallizer, a salt liquid mixing tank, a centrifuge, a condenser and a condensing water tank. The system can effectively treat industrial waste gas containing chlorine gas and hydrogen chloride gas. Since products are reclaimed from waste liquid, the added value of the system is improved, and simultaneously, problems on sewage discharge do not exist.
Description
Technical field
The present invention relates to industrial waste gas handles and the salt regenerative system.
Background technology
The industrial waste gas that contains chlorine and hydrogen chloride gas that produces in the commercial production need pass through processing, could discharge after up to standard.Chinese patent number is that 200720005231.7 utility model patent specification discloses a kind of emission-control equipment; Have one-level scrubbing tower, secondary turbulent tower and three grades of turbulent towers; One-level scrubbing tower and two, three grades of turbulent towers are equipped with heat exchanger respectively one, two, No. three, and native system also has supply mains in alkali lye house steward, water inlet pipe, the cooling, cooling backwater house steward, discharge manifold in addition.Waste gas gets into the one-level scrubbing tower by the blower fan traction, and the water with the contrary spray of shower nozzle in the rapid washing pipe of one-level scrubbing tower fully contacts with hydrogen chloride gas, and hydrogen chloride is after the one-level washing, and chlorine gas concentration also decreases, and gets into the secondary turbulent tower again.Hydrogen chloride gas is further absorbed, and chlorine gas concentration also further reduces, and waste gas gets in three grades of turbulent towers, main processing chlorine.Waste gas is discharged by blower fan after three grades of absorptions.When circulation fluid is that concentration of hydrochloric acid in the absorption liquid acquires a certain degree, absorption liquid enters acid accumulator settling basin through the recycling carrier pipe.Though above-mentioned emission-control equipment is handled the industrial waste gas that contains chlorine and hydrogen chloride gas, make the gas of discharge up to standard, if relief liquor is not handled, still there is pollution problem.
Summary of the invention
The objective of the invention is to propose a kind of industrial waste gas that can carry out pollution-free processing and ability output Nacl to the industrial waste gas that contains chlorine and hydrogen chloride gas handles and the salt regenerative system.
For achieving the above object, the present invention takes following technical scheme:
The present invention includes emission-control equipment, water main, alkali lye supply groove, salt acid storage tank and in and deslagging device and saline solution enrichment facility;
Said emission-control equipment has turn trough in 1 to No. 5 absorption tower, gas-liquid separator, blender and acid accumulator settling basin and the alkali lye; Industrial waste gas is discharged through blower fan behind gas-liquid separator through 1 to No. 5 absorption tower successively again; Said blender is accepted respectively from neutral water and the alkali lye of water main with alkali lye confession groove; The liquid outlet of blender is connected with the inlet on No. 5 absorption towers and No. 4 absorption towers respectively; The liquid outlet of aerosol separator is connected with the liquid mouth that returns on No. 5 absorption towers; The overfall on No. 5 absorption towers is connected with the fluid infusion mouth on No. 4 absorption towers; The overfall on No. 4 absorption towers is connected with the fluid infusion mouth on No. 3 absorption towers, each leakage fluid dram on above-mentioned No. 3 absorption towers, No. 4 absorption towers and No. 5 absorption towers all with said alkali lye in turn trough be connected; The neutral water from the water main is accepted on said No. 2 absorption towers, and the overfall on No. 2 absorption towers is connected with the fluid infusion mouth on No. 1 absorption tower, and the leakage fluid dram on No. 1 absorption tower and No. 2 absorption towers all is connected with said acid accumulator settling basin; The upper and lower part of said acid accumulator settling basin has clear liquid delivery outlet and suspension outlet respectively, and a wherein clear liquid delivery outlet of acid accumulator settling basin is connected with said salt acid storage tank;
In having with deslagging device in said with stirred tank, deblending slot, filter press and salt liquid transit groove; Accept alkali lye with stirred tank in said from turn trough in the hydrochloric acid of said acid accumulator settling basin and the said alkali lye; Said deblending slot is accepted the suspension from said acid accumulator settling basin; All be connected with said filter press with the liquid outlet of stirred tank and the discharging opening of deblending slot in said, the filter liquor of filter press is pumped into said salt liquid transit groove;
Said saline solution enrichment facility has preheater, heater, evaporimeter, crystallizer, saline solution tank diameter, centrifuge, condenser and condensate draining; Be connected with the inlet of said preheater with the infusion port of the salt liquid transit groove of deslagging device in said; The liquid outlet of preheater is connected with the charging aperture of said heater; The discharging opening of evaporimeter is connected with the charging aperture of said crystallizer; The discharging of crystallizer is imported said centrifuge through the saline solution tank diameter, and the liquid phase of centrifuge drains in the filtrating storage tank, and the solid phase of centrifuge is dense salt; The condensed water that condenser produces is collected by the condensed water storage tank.
No. 1 absorption tower of said emission-control equipment is a spray absorber; No. 2 absorption towers and No. 3 absorption towers are that rapids is towards spray absorber; No. 4 absorption towers and No. 5 absorption towers are packed absorber; Be connected by circulation pipe between the liquid outlet on each absorption tower and the shower nozzle, be serially connected with water pump in each circulation pipe, absorption liquid forms circulation; Also be serially connected with heat exchanger in each circulation pipe on said No. 1 absorption tower, No. 2 absorption towers, No. 3 absorption towers.
Be provided with the saline solution tank diameter in said and between the filter press of deslagging device and the salt liquid transit groove.
Give birth to steam and get into heater; A secondary steam part gets into preheater; All the other are evaporimeter, condenser successively; In condensation flow to the condensed water storage tank that condenser produces, the condensed water that condensed water in the condensed water storage tank and preheater produce is pooled in the water leg, and the water of water leg offers the water main.
Said saline solution enrichment facility also has rinsing bowl, is connected serial connection washing pump in the circulation pipe between the upper and lower Butterworth Hatch of heater and the rinsing bowl by circulation pipe.
The present invention has following good effect: the present invention have emission-control equipment, in and deslagging device and saline solution enrichment facility; Emission-control equipment adopts the Pyatyi absorption tower that waste gas is handled; And the Pyatyi absorption tower adopts fountain, rapids towards three types of fountain and material filling types; The absorption liquid that use on the two-stage absorption tower before in the Pyatyi absorption tower is neutral water; The absorption liquid that use on three grades of absorption towers, back is alkali lye, thus waste gas chlorine quilt absorption fully behind each absorption tower of process, but also help hydrochloric acid is collected.Handle with deslagging device and saline solution enrichment facility in the waste liquid warp that in waste gas treatment process, produces, therefrom reclaim salt acid product and Nacl product.Native system can be administered the industrial waste gas that contains chlorine and hydrogen chloride gas effectively, owing to from waste liquid, reclaim product, thus improve the added value of native system; There is not simultaneously the sewage discharge problem; Have in the absorption tower of native system and adopt fluid infusion step by step, utilize again, for example steam reuse after becoming condensed water at the relief liquor on each link or after recycling or collecting; The parting liquid of aerosol separator adds in the absorption tower and utilizes, so energy-conservation.
Description of drawings
For content of the present invention is more clearly understood,, the present invention is done further detailed explanation, wherein below according to specific embodiment and combine accompanying drawing
Fig. 1 is an embodiment of the invention diagrammatic sketch;
Fig. 2 be in another embodiment diagrammatic sketch of deslagging device.
The specific embodiment
Embodiment 1
See Fig. 1, present embodiment comprise emission-control equipment A, in and deslagging device B, saline solution enrichment facility C and water main 1, alkali lye supply groove 2, salt acid storage tank 3, water leg 4 and filtrating storage tank 5.Water main 1 neutral water is provided by the water for industrial use of outside and the condensed water of native system generation jointly.
Said emission-control equipment A has turn trough A10 in No. 1 absorption tower A1, No. 2 absorption tower A2, No. 3 absorption tower A3, No. 4 absorption tower A4, No. 5 absorption tower A5, aerosol separator A6, blender A7 and acid accumulator settling basin A9 and the alkali lye.Above-mentioned No. 1 absorption tower A1 is a spray absorber, and No. 2 absorption tower A2 and No. 3 absorption tower A3 are that rapids is towards spray absorber.No. 4 absorption tower A4 and No. 5 absorption tower A5 are packed absorber.Top in the spray absorber is provided with spray head.Rapids is provided with spray head towards the top in the spray absorber, is provided with rapids in the rapid washing pipe towards shower nozzle.Top in the packed absorber is provided with spray head, has filler in the tower.Be connected by circulation pipe between the liquid outlet on each absorption tower and the shower nozzle, be serially connected with water pump a in each circulation pipe, the absorption liquid of each tower forms circulation.Because handle in the waste gas process and can produce exothermic reaction, the absorption efficiency of tower descends under hot conditions, in each circulation pipe of No. 1 absorption tower A1, No. 2 absorption tower A2, No. 3 absorption tower A3, is serially connected with heat exchanger d, reduces the temperature of absorption liquid.
Be connected by pipe A11 between the air inlet of the exhaust outlet of No. 1 absorption tower A1 and No. 2 absorption tower A2; Be connected by pipe A12 between the air inlet of the exhaust outlet of No. 2 absorption tower A2 and No. 3 absorption tower A3; Be connected by pipe A13 between the exhaust outlet of No. 3 absorption tower A3 and No. 4 absorption tower A4 air inlets; Is connected by pipe A14 between the air inlet of the exhaust outlet of No. 4 absorption tower A4 and No. 5 absorption tower A5, is connected the gas outlet connection delivery pipe A16 of aerosol separator A6 by managing A15 between the air inlet of the exhaust outlet on No. 5 absorption towers and aerosol separator A6; Serial connection blower fan A8 among the delivery pipe A16, industrial waste gas is discharged through blower fan A8 behind aerosol separator A6 through 1 to No. 5 absorption tower successively again.
Water main 1 and alkali lye supply groove 2 respectively through the first water supply arm 11 with alkali lye confession manage 21 and be connected with the feed tube of said blender A7; Water supply arm 11 supplies on the pipe 21 flowmeter f to be installed respectively with alkali lye, is used to control the neutral water of entering blender A7 and the ratio of alkali lye.The liquid outlet of blender A7 is connected with the inlet of No. 5 absorption tower A5, is connected with the inlet of No. 4 absorption tower A4 through pipe A27 through pipe A26; The liquid outlet of aerosol separator A6 is connected with the liquid mouth that returns of No. 5 absorption tower A5 through pipe A25, and the parting liquid of aerosol separator A6 adds among No. 5 absorption tower A5 and utilizes.The overfall of No. 5 absorption tower A5 is connected with the fluid infusion mouth of No. 4 absorption tower A4 through pipe A24; The overfall of No. 4 absorption tower A4 is connected with the fluid infusion mouth of No. 3 absorption tower A3 through pipe A23; Each leakage fluid dram of the leakage fluid dram of the leakage fluid dram of No. 3 absorption tower A3, No. 4 absorption tower A4 and No. 5 absorption tower A5 is connected with alkali lye discharge manifold A28 through delivery pipe, and turn trough A10 is connected in alkali lye discharge manifold A28 and the said alkali lye.Water main 1 second arm 12 is connected with the water inlet of No. 2 absorption tower A2; Be connected by pipe A22 between the fluid infusion mouth of the overfall of No. 2 absorption tower A2 and No. 1 absorption tower A1; The leakage fluid dram of the leakage fluid dram of No. 1 absorption tower A1 and No. 2 absorption tower A2 respectively is connected with acid solution discharge manifold A21 through discharging tube, and acid solution discharge manifold 21 is connected with said acid accumulator settling basin A9.The upper and lower part of said acid accumulator settling basin A9 has clear liquid delivery outlet and suspension outlet respectively; The wherein clear liquid delivery outlet of acid accumulator settling basin A9 is connected with said salt acid storage tank 3 through pipe A29; The clear liquid on acid accumulator settling basin A9 top promptly is a watery hydrochloric acid, delivers to clear liquid in the salt acid storage tank 3 then as reclaiming product.The fluid infusion mode on above-mentioned No. 1 absorption tower, No. 3 absorption towers, No. 4 absorption towers is all through the overflow supply of first grade absorption tower afterwards; Absorption liquid when No. 1 absorption tower and No. 2 absorption towers reaches finite concentration; Then drive valve and enter acid accumulator settling basin A9; Absorption liquid when No. 3 absorption towers, No. 4 absorption towers and No. 5 absorption towers reaches finite concentration, then drives valve and enters turn trough A10 in the alkali lye.
Above-mentioned water main's 1 second arm 12 is connected except the water inlet with No. 2 absorption tower A2, and also the water inlet with No. 3 absorption tower A3 is connected, and water for cleaning is provided.
In having with deslagging device B in said with stirred tank B1, deblending slot B2, filter press B3 and salt liquid transit groove B4.Be added with reagent in the deblending slot.Be connected with the liquid outlet of turn trough A10 in the alkali lye with the clear liquid delivery outlet of said acid accumulator settling basin A9 with pipe B7 through pipe B6 respectively with two input ports of stirred tank B1 in said; The charging aperture of said deblending slot B2 is connected with the suspension outlet of said acid accumulator settling basin A9 through pipe B8; The suspension pump of acid accumulator settling basin A9 is delivered to deblending slot B2; In respectively be connected with said filter press B3 with pipe B10 with the discharging opening of the liquid outlet of stirred tank B1 and deblending slot B2 through pipe B9, come the rare saline solution of self-neutralization stirred tank B1 and the suspension of deblending slot B2 to pass through filter press B3 simultaneously, obtain filter residue and filter liquor; Rare saline solution receives the effect of reagent in the filter process of filter press B3; Foreign ion obtains removing, and filter liquor is that the purity of rare saline solution is improved, and the filter liquor of filter press B3 is pumped into said salt liquid transit groove B4.
Said saline solution enrichment facility C has preheater C1, heater C2, evaporimeter C3, crystallizer C4, dense saline solution tank diameter C5, centrifuge C6, condenser C7 and condensate draining C8.Be provided with circulation pipe between said crystallizer C4 and the heater C2, be serially connected with circulating pump C11 in the circulation pipe.Be connected by pipe C12 in said and between the inlet of the infusion port of the salt liquid transit groove B4 of deslagging device B and said preheater C1; Be connected by pipe C13 between the charging aperture of the liquid outlet of preheater C1 and said heater C2; Be connected by pipe C14 between the charging aperture of the discharging opening of evaporimeter C3 and said crystallizer C4; Is connected by pipe C15 between the discharging opening of crystallizer C4 and the said dense saline solution tank diameter C5, is connected by managing C16 between the charging aperture of dense saline solution tank diameter C5 and said centrifuge C6.
Rare saline solution of salt liquid transit groove B4 output is pumped in the preheater C1 through pipe C12, delivers to heater C2 heating through preheating after manage C13, and successively through pipe C14, evaporimeter C3, crystallizer C4; Owing between crystallizer C4, heater C2 and the evaporimeter C3 closed circuit is arranged, rare saline solution progressively concentrates, and concentrate is pumped to saline solution tank diameter C5 through pipe C15; Deliver to centrifuge C6 through pipe C16 again and carry out liquid, solid phase separation; Liquid phase is discharged in the filtrating storage tank 5, can reuse, and solid phase is Nacl.
Give birth to steam and get into heater C2; A secondary steam part gets into preheater C1 through pipe C18; All the other secondary steams get into condenser C7 through pipe C14, evaporimeter C3, pipe C17 successively; Among condensation flow to the condensed water storage tank C8 that condenser C7 produces, the condensed water that condensed water among the condensed water storage tank C8 and preheater C1 produce is pooled in the water leg 4 through pipe C20 and pipe C19 respectively, and the water of water leg 4 offers water main 1.
Said saline solution enrichment facility C also has rinsing bowl C9, is connected serial connection washing pump C10 in the circulation pipe between the upper and lower Butterworth Hatch of heater C2 and the rinsing bowl C9 by circulation pipe.
The body of the tower bottom on above-mentioned each absorption tower is equipped with thermometer t that detects the absorption liquid temperature and the densimeter i that detects absorption liquid concentration.In addition, about the position is provided with liquid level gauge and PH meter, be provided with corresponding valve in the pipeline.
During shown in Figure 2 is with another embodiment of deslagging device, in and be provided with the saline solution tank diameter B5 that has agitator between the filter press B3 of deslagging device B and the saline solution lead-over groove B4.
Claims (5)
1. an industrial waste gas is handled and the salt regenerative system, comprises that emission-control equipment (A) and water main (1), alkali lye supply groove (2) and salt acid storage tank (3); It is characterized in that: during native system also comprises and deslagging device (B), saline solution enrichment facility (C);
Said emission-control equipment (A) has turn trough (A10) in 1 to No. 5 absorption tower, gas-liquid separator (A6), blender (A7) and acid accumulator settling basin (A9) and the alkali lye; Industrial waste gas is discharged through blower fan (A8) behind gas-liquid separator (A6) through 1 to No. 5 absorption tower successively again; Said blender (A7) is accepted respectively from neutral water and the alkali lye of water main (1) with alkali lye confession groove (2); The liquid outlet of blender (A7) is connected with the inlet of No. 5 absorption towers (A5) with No. 4 absorption towers (A4) respectively; The liquid outlet of aerosol separator (A6) is connected with the liquid mouth that returns on No. 5 absorption towers (A5); The overfall on No. 5 absorption towers (A5) is connected with the fluid infusion mouth on No. 4 absorption towers (A4); The overfall on No. 4 absorption towers (A4) is connected with the fluid infusion mouth on No. 3 absorption towers (A3), each leakage fluid dram on above-mentioned No. 3 absorption towers (A3), No. 4 absorption towers (A4) and No. 5 absorption towers (A5) all with said alkali lye in turn trough (A10) be connected; The neutral water from water main (1) is accepted on said No. 2 absorption towers (A2), and the overfall on No. 2 absorption towers (A2) is connected with the fluid infusion mouth on No. 1 absorption tower (A1), and the leakage fluid dram on No. 1 absorption tower (A1) and No. 2 absorption towers (A2) all is connected with said acid accumulator settling basin (A9); The upper and lower part of said acid accumulator settling basin (A9) has clear liquid delivery outlet and suspension outlet respectively, and a wherein clear liquid delivery outlet of acid accumulator settling basin (A9) is connected with said salt acid storage tank (3);
In said and deslagging device (B) have in and stirred tank (B1), deblending slot (B2), filter press (B3) and salt liquid transit groove (B4); In said and stirred tank (B1) accept alkali lye from turn trough (A10) in the hydrochloric acid of said acid accumulator settling basin (A9) and the said alkali lye; Said deblending slot (B2) is accepted the suspension from said acid accumulator settling basin (A9); All be connected with said filter press (B3) with the liquid outlet of stirred tank (B1) and the discharging opening of deblending slot (B2) in said, the filter liquor of filter press (B3) is pumped into said salt liquid transit groove (B4);
Said saline solution enrichment facility (C) has preheater (C1), heater (C2), evaporimeter (C3), crystallizer (C4), saline solution tank diameter (C5), centrifuge (C6), condenser (C7) and condensate draining (C8); Be connected with the inlet of said preheater (C1) with the infusion port of the salt liquid transit groove (B4) of deslagging device (B) in said; The liquid outlet of preheater (C1) is connected with the charging aperture of said heater (C2); The discharging opening of evaporimeter (C3) is connected with the charging aperture of said crystallizer (C4); The discharging of crystallizer (C4) is imported said centrifuge (C6) through saline solution tank diameter (C5); The liquid phase of centrifuge (C6) drains in the filtrating storage tank (5), and the solid phase of centrifuge (C6) is dense salt; The condensed water that condenser (C7) produces is collected by condensed water storage tank (C8).
2. industrial waste gas according to claim 1 is handled and the salt regenerative system; It is characterized in that: No. 1 absorption tower (A1) of said emission-control equipment is spray absorber; No. 2 absorption towers (A2) and No. 3 absorption towers (A3) be rapids towards spray absorber, No. 4 absorption towers (A4) and No. 5 absorption towers (A5) are packed absorber, are connected by circulation pipe between the liquid outlet on each absorption tower and the shower nozzle; Be serially connected with water pump (a) in each circulation pipe, absorption liquid forms circulation; Also be serially connected with heat exchanger (d) in each circulation pipe on said No. 1 absorption tower (A1), No. 2 absorption towers (A2), No. 3 absorption towers (A3).
3. industrial waste gas according to claim 1 is handled and the salt regenerative system, it is characterized in that: be provided with saline solution tank diameter (B5) in said and between the filter press (B3) of deslagging device (B) and the salt liquid transit groove (B4).
4. industrial waste gas according to claim 1 is handled and the salt regenerative system; It is characterized in that: give birth to steam and get into heater (C2); A secondary steam part gets into preheater (C1), and all the other are evaporimeter (C3), condenser (C7) successively, in condensation flow to the condensed water storage tank (C8) that condenser (C7) produces; The condensed water that condensed water in the condensed water storage tank (C8) and preheater (C1) produce is pooled in the water leg (4), and the water of water leg (4) offers water main (1).
5. industrial waste gas according to claim 1 is handled and the salt regenerative system; It is characterized in that: said saline solution enrichment facility (C) also has rinsing bowl (C9); Be connected serial connection washing pump (C10) in the circulation pipe between the upper and lower Butterworth Hatch of heater (C2) and the rinsing bowl (C9) by circulation pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102238410A CN101862586B (en) | 2010-07-12 | 2010-07-12 | System for industrial waste gas treatment and salt regeneration |
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| CN2010102238410A CN101862586B (en) | 2010-07-12 | 2010-07-12 | System for industrial waste gas treatment and salt regeneration |
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| CN101862586A CN101862586A (en) | 2010-10-20 |
| CN101862586B true CN101862586B (en) | 2012-03-07 |
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| CN2010102238410A Expired - Fee Related CN101862586B (en) | 2010-07-12 | 2010-07-12 | System for industrial waste gas treatment and salt regeneration |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102502497B (en) * | 2011-10-18 | 2013-11-06 | 山东聊城鲁西化工第四化肥有限公司 | Graded and continuous production device and technique of hydrochloric acid |
| CN104923051B (en) * | 2015-05-11 | 2017-06-13 | 苏州瑞钰特自动化科技有限公司 | A kind of coating waste gas, waste water, waste residue one cleaning system |
| CN110465161B (en) * | 2019-08-05 | 2021-09-07 | 潜江宜生新材料有限公司 | Tail gas absorption system for producing silane coupling agent |
| CN111116523B (en) * | 2019-12-30 | 2021-09-07 | 浙江新和成股份有限公司 | System and process for producing alpha-chloro-alpha-acetyl-gamma-butyrolactone |
Citations (5)
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|---|---|---|---|---|
| CN2503976Y (en) * | 2001-09-25 | 2002-08-07 | 陈玉林 | Chlorine, waste gas absorbing device |
| CN101254395A (en) * | 2007-03-01 | 2008-09-03 | 徐全海 | Waste gas treatment system |
| CN101648104A (en) * | 2008-08-13 | 2010-02-17 | 北京格瑞华阳科技发展有限公司 | Technology for reclaiming hydrogen chloride tail gas in chemical production |
| CN101723327A (en) * | 2009-12-01 | 2010-06-09 | 张再明 | Hydrochloric acid absorption tower and process for producing hydrochloric acid for production |
| CN201848198U (en) * | 2010-07-12 | 2011-06-01 | 江苏海鹏防腐设备有限公司 | Industrial waste gas treatment and salt regenerating unit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4154219B2 (en) * | 2001-12-25 | 2008-09-24 | キヤノン株式会社 | Wet gas treatment method |
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2010
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2503976Y (en) * | 2001-09-25 | 2002-08-07 | 陈玉林 | Chlorine, waste gas absorbing device |
| CN101254395A (en) * | 2007-03-01 | 2008-09-03 | 徐全海 | Waste gas treatment system |
| CN101648104A (en) * | 2008-08-13 | 2010-02-17 | 北京格瑞华阳科技发展有限公司 | Technology for reclaiming hydrogen chloride tail gas in chemical production |
| CN101723327A (en) * | 2009-12-01 | 2010-06-09 | 张再明 | Hydrochloric acid absorption tower and process for producing hydrochloric acid for production |
| CN201848198U (en) * | 2010-07-12 | 2011-06-01 | 江苏海鹏防腐设备有限公司 | Industrial waste gas treatment and salt regenerating unit |
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