CN104190211B - Device and method for increasing absorption rate of iodine-containing tail gas - Google Patents
Device and method for increasing absorption rate of iodine-containing tail gas Download PDFInfo
- Publication number
- CN104190211B CN104190211B CN201410434672.3A CN201410434672A CN104190211B CN 104190211 B CN104190211 B CN 104190211B CN 201410434672 A CN201410434672 A CN 201410434672A CN 104190211 B CN104190211 B CN 104190211B
- Authority
- CN
- China
- Prior art keywords
- iodine
- absorption
- tower
- cleaning mixture
- scrubbing tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a device and a method for increasing the absorption rate of iodine-containing tail gas. The device comprises an absorbing liquid tank, a washing tower and a washing tank, wherein absorbing liquid in the absorbing liquid tank is pumped into an absorbing tower, flows through the absorbing tower and then returns into the absorbing liquid tank by another pipeline; the top end of the absorbing tower is provided with a gas escaping hole which is connected with the washing tower by a pipeline; the bottom part of the washing tower is communicated with the washing tank by a pipe section; the side part of the washing tower is communicated with the washing tank by a pumping pipeline; a branch pipeline is arranged on the pumping pipeline and leads into the absorbing liquid tank. The device and the method disclosed by the invention have the advantages that by adoption of a two-stage circulating system, iodine absorption is facilitated, and iodine steam discharged to the outside is reduced to be 4mg/L, so that the environment-protecting requirement is met, and the effect is obvious; the iodine absorption rate is increased to be 80% and economic benefit is improved.
Description
Technical field
The present invention relates to chemical production technical field is and in particular to a kind of device putting forward high iodine-containing tail gas absorption rate and side
Method.
Background technology
From phosphorus ore extract iodine mainly use phosphorus ore containing iodine production phosphoric acid carry out as raw material, produce phosphoric acid,diluted
During these iodine be distributed in flue gas, phosphoric acid and ardealite.Carry in the phosphoric acid,diluted producing from phosphate ore production containing iodine
Iodine, analysis iodine, iodine generally carry out separating using the means filtering after separating out, and finally realize solid-liquid separation and are filtrated to get thick iodine and contain iodine
Filtrate；The main component of filtrate is water, but is in acidity containing substantial amounts of residual oxidizing agent and iodine, has stronger oxidisability；Iodine
Content is higher, and directly outer row can cause environmental pollution, and with sewage disposal, operation is numerous and diverse, high cost.Generally rock phosphate in powder containing iodine produces
During produce phosphoric acid,diluted in contain iodine, carry during iodine analysis phosphoric acid in add hydrogen peroxide as oxidant reaction, blown with hot-air
Go out molecular iodine therein and enter absorption tower, then use sodium sulfite solution as absorbing liquid cyclic absorption, when concentration reaches necessarily
During concentration, carry out analysing iodine, filtration.During the continuous output in absorption tower and absorbing iodine, there is part iodine and form iodine " steaming
Vapour " is discharged and is wasted, and manufacturing enterprise, due to a lack of preferable recovery method, haves no alternative but iodine steam is direct by high wind mostly at present
Discharge outdoor, not only cause product loss, reduce the iodine response rate, and serious environment pollution.
Content of the invention
Content of iodine is exceeded in order to solve to extract from phosphorus ore in the tail gas of row outside during iodine for the present invention, causes the wasting of resources, dirt
A kind of problem of dye environment, there is provided device and method putting forward high iodine-containing tail gas absorption rate.
The present invention, in order to solve above-mentioned technical problem, adopts the following technical scheme that
A kind of device putting forward high iodine-containing tail gas absorption rate, including scrubbing tower, sink, absorbs liquid bath, in this absorption liquid bath
Absorbing liquid pumping absorption tower in, absorbing liquid flow through absorption tower after by another pipeline again be back to absorb liquid bath in, described
Absorption tower top is gas escape port, and this gas escape port is connected by pipeline with described scrubbing tower, described wash tower bottoms
Communicated with described sink by pipeline section, scrubbing tower sidepiece is communicated with sink by a pump tubing length, described pump tubing length
Dividing has a branch road, and this branch road is passed through in described absorption liquid bath.
It is set with a chimney, described chimney top exceeds the upper end of described scrubbing tower, described chimney in described scrubbing tower
The bottom that bottom is located in described scrubbing tower.
Described scrubbing tower is provided with spray equipment, and described spray equipment includes an endless tube, described
Endless tube communicate with pump tubing length, this endless tube is provided with four shower nozzles, and four shower nozzles are located in described scrubbing tower
Top.
The gas escape port on described absorption tower top is connected with the middle part of scrubbing tower by pipeline.
It is provided with control valve in described branch road.
A kind of method putting forward high iodine-containing tail gas absorption rate, comprises the following steps:
A) preparation of cleaning mixture: the filtrate containing iodine after analysis iodine is filtered enters in sink, then in described sink
It is passed through so2Use as cleaning mixture；
B) iodine first order absorption: absorbing liquid is loaded and absorbs in liquid bath, be then sent by pumping in absorption tower, simultaneously toward absorption
It is passed through the extracting gas containing iodine in tower, carries out iodine absorption, absorbing liquid is back in absorption liquid bath from absorption tower after absorbing iodine, then passes through
It is pumped in absorption tower and carries out iodine absorption, cyclic absorption again, during this, absorption tower escaping gas passes in a scrubbing tower；
C) two grades of absorptions of iodine: the cleaning mixture in step a sink is pumped in the scrubbing tower described in step b, absorbs
Tower escaping gas enters in this scrubbing tower, and by cleaning mixture spray-absorption, the cleaning mixture being washed out in tower is back in tank
Continue washing absorption again in pumping scrubbing tower, cleaning mixture cyclic absorption utilizes；
D) cleaning mixture switchs to absorbing liquid use: when the cleaning mixture in sink in step c is by amount of iodine after recycling
When reaching 5g/l, cleaning mixture is passed through in absorption liquid bath as absorbing liquid recycling the control valve opened in branch road；
E) iodine of row's analysis outward: when iodide ion concentration reaches 30g/l in the absorbing liquid in absorption liquid bath, enter outward in analysis iodine groove
Carry out analysing iodine, filtration, filtrate enter and is passed through so in sink again2Recycle as fresh wash liquid.
70-95mg/l containing iodine in filtrate after the analysis iodine filtration of described step a, is passed through filtrate quality percentage ratio 35%-
45% so2Use as cleaning mixture.
The invention has the beneficial effects as follows:
1. the cyclic absorption apparatus system of the present invention includes scrubbing tower and absorption tower can make the absorbance of overall iodine improve,
Particularly the iodine vapor content in outer last person's gas can be reduced to 4mg/l, meet the requirement of environmental protection；The present invention will analyse containing after iodine filters
Iodine filtrate enters in sink, is then passed through so in sink2As cleaning mixture, for containing of cyclic absorption absorption tower effusion
Iodine vapor, enters when cleaning mixture concentration reaches 5g/l and absorbs the absorbing liquid recycling absorbing as one-level iodine in groove, work as suction
When receipts liquid concentration reaches 30g/l, outer row analyses iodine, makes iodine absorbance bring up to 80%, assimilation effect is notable；With my company subordinate
As a example Zhi Dian factory produces 6 tons of scales of iodine per year, after assembly of the invention and process, year benefit can increase by ten thousand yuan of nearly 5-6.
2. the present invention will put forward iodine filter liquor, enter in sink, be passed through appropriate so2As cleaning mixture, cleaning mixture is through following
Ring pump is beaten to scrubbing tower, gas containing iodine is sprayed by certain sprinkle density by equally distributed four shower nozzles in scrubbing tower top
Drench washing absorption, contact area is big, good absorbing effect, when the concentration of cleaning mixture reaches a timing, open control valve and squeezed into
Absorbing liquid circulating slot proceeds iodine as absorbing liquid during first order absorption and absorbs, and recycles；Iodine can be steamed by this system
Vapour thoroughly reclaims, and the lean iodine gas after washing drains into outdoor meet the requirement of environmental protection, and this system and method is also applied for simultaneously
The absorption of other toxic and harmfuls.
3. it is set with a chimney in scrubbing tower of the present invention, chimney top exceeds the upper end of scrubbing tower, chimney bottom is located at and washes
Wash the bottom in tower, extend and enter scrubbing tower and include the distance that flows through of iodine gas, scrubbed after gas enter from chimney bottom
Enter chimney to discharge；Scrubbing tower top is set with an endless tube, and this endless tube is communicated with pipeline section, and this endless tube is provided with four shower nozzles；Can
Fully spray washing enter scrubbing tower containing iodine vapor, good absorbing effect.
4. assembly of the invention compact conformation, take up an area save, small investment, operating cost low it is easy to implement this technique, adopt
Old material is transformed, low cost.
Brief description
Fig. 1. for the structural representation of the present invention.
Specific embodiment
A kind of device for improving iodine absorbance in tail gas when extracting iodine from phosphorus ore, including absorption liquid bath 2, this absorption
Absorbing liquid is delivered in absorption tower 1 by a pipeline 15 carrying circulating pump 3 by the absorbing liquid in liquid bath, in addition absorb liquid bath 2 with
It is connected with a circulation line 5, the gas containing iodine of absorption tower effusion is passed through in scrubbing tower 7 by pipeline 6, pipeline 6 between absorption tower 1
Carbon steel plastics lined pipe for dn350 makes absorption tower 2 top connect with scrubbing tower 7 middle part；Scrubbing tower 7 is made up of a steel lining plastic tank, its
The sleeve pipe being inside also equipped with a dn400 is connected with chimney 13, and chimney 13 is set in scrubbing tower 7, and chimney 13 top exceeds scrubbing tower 7
Upper end, chimney 13 bottom be located at scrubbing tower 7 in bottom.This scrubbing tower 7 bottom is communicated with sink 8 by pipeline section 17, washes
The cleaning mixture washed in groove 8 is delivered in scrubbing tower 7 by the pump 10 in a pump tubing length 9, and dividing in this pump tubing length 9 has a branch road 4,
Control valve 18 is installed in branch road 4, this branch road 4 is passed through in absorption liquid bath 2.Described scrubbing tower is provided with spray equipment, spray dress
Put including an endless tube 12, endless tube 12 is communicated with pump tubing length 9, this endless tube 12 is provided with four shower nozzles 11, four shower nozzles are located at institute
State the top in scrubbing tower 7.
Embodiment 1
Iodine, analysis iodine, iodine adopt filtration means after separating out are put forward in the phosphoric acid,diluted producing from phosphate ore production containing iodine
Carry out separating, finally realize solid-liquid separation and be filtrated to get thick iodine and the filtrate containing iodine；By the filtrate containing iodine 80mg/l, by pipeline
14 add in washing liquid bath 8, are passed through so of filtrate quality percentage ratio 40%2As cleaning mixture；Mass percentage concentration is that 20 % are sub-
Metabisulfite solution loads in absorption liquid bath 2 as absorbing liquid, then delivers in absorption tower 1 by pump 3, simultaneously logical toward in absorption tower
Cross pipeline 16 and be passed through extracting gas containing iodine 40mg/l, returned to by circulation line 5 after the absorbing liquid in absorption tower 1 absorbs
Absorb in liquid bath 2, then deliver in absorption tower 1 further through pump 3, continue to absorb, recycle, absorption tower 1 top ease during this
The gas 35mg/l containing iodine going out, is passed in scrubbing tower 2, then by the cleaning mixture in above-mentioned sink 8 through pump 10 dozens to washing
Wash in the endless tube 12 of tower 7, cleaning mixture carries out spray-absorption by equally distributed four shower nozzles 11, presses the spray of 30mg/l during spray
Drench density to be sprayed, so in cleaning mixture2Iodine molecule in the vortex tail gas that will enter in tower is reduced to iodine soluble ion,
Cleaning mixture containing iodide ion pass through pipeline section 17 flow into washing liquid bath 8 in again through circulating pump 10 dozens sprayed to scrubbing tower 7, wash
Wash liquid to recycle, the purified lean iodine gas absorbing after washing enters air from chimney 13.Divide in the pump tubing length 9 of cleaning mixture
There is a branch road 4, control valve 18 is installed in this branch road 4, branch road 4 passes in absorption liquid bath 2, when cleaning mixture recycles, washes
Wash liquid concentration reach open during 5g/l control valve 18 by this branch road 4 by cleaning mixture be passed through absorption liquid bath in make as absorbing liquid
With；Absorb absorbing liquid in liquid bath 2 and beat when concentration reaches 30g/l after recycling and carry out analysing iodine to analysis iodine groove, work as absorbing liquid
Beat to analysis iodine groove to lead to absorb liquid level in liquid bath and also can open control valve 18 when not enough the cleaning mixture of rich iodine is passed through branch road 4 and supplement
Recycle to absorbing in liquid bath 2 as absorbing liquid；After analysis iodine, continue to filter, by the filtrate containing iodine 75mg/l, by pipeline 14
Add in washing liquid bath 8, be passed through so of filtrate quality percentage ratio 25%2Use as cleaning mixture replenisher, or directly in sink
Filtrate after middle supplement original analysis iodine, is passed through so2, use as fresh cleaning mixture；Then again scrubbing tower is squeezed into by pump 10
Carry out washing absorption, circulate above-mentioned whole process.Outside during scrubbed tower washing, the lean iodine gas 4mg/l containing iodine of row, reaches environmental protection
Require.Absorb iodine through secondary cycle, the iodine response rate improves 80%.
Embodiment 2
Iodine, analysis iodine, iodine adopt filtration means after separating out are put forward in the phosphoric acid,diluted producing from phosphate ore production containing iodine
Carry out separating, finally realize solid-liquid separation and be filtrated to get thick iodine and the filtrate containing iodine；By the filtrate containing iodine 95mg/l, by pipeline
14 add in washing liquid bath 8, are passed through so of filtrate quality percentage ratio 45%2As cleaning mixture；Mass percentage concentration is that 20 % are sub-
Metabisulfite solution loads in absorption liquid bath 2 as absorbing liquid, then delivers in absorption tower 1 by pump 3, simultaneously logical toward in absorption tower
Cross pipeline 16 and be passed through extracting gas containing iodine 35mg/l, returned to by circulation line 5 after the absorbing liquid in absorption tower 1 absorbs
Absorb in liquid bath 2, then deliver in absorption tower 1 further through pump 3, continue to absorb, recycle, during this, absorption tower 1 escapes
Gas 25mg/l containing iodine, passed in scrubbing tower 2, then by the cleaning mixture in above-mentioned sink 8 through pump 10 dozens to washing
In the endless tube 12 of tower 7, cleaning mixture carries out spray-absorption by equally distributed four shower nozzles 11, presses the spray of 25mg/l during spray
Density is sprayed, by so in cleaning mixture2Will enter tower in vortex tail gas in iodine molecule be reduced to iodine soluble from
Son, the cleaning mixture containing iodide ion pass through pipeline section 17 flow into washing liquid bath 8 in again through circulating pump 10 dozens sprayed to scrubbing tower 7
Drench, cleaning mixture recycles, the purified lean iodine gas absorbing after washing enters air from tower top.The pump tubing length 9 of cleaning mixture
In point have a branch road 4, control valve 18 is installed in this branch road 4, branch road 4 passes in absorption liquid bath 2, when cleaning mixture recycles
When, the concentration of cleaning mixture is reached to open control valve 18 during 5g/l and be passed through cleaning mixture by this branch road 4 and absorbs in liquid bath as suction
Receive liquid to use；Beat when the concentration absorbing absorbing liquid in liquid bath 2 reaches 30g/l to analysis iodine groove；When absorbing liquid is beaten to analysis iodine groove
Leading to also to open control valve 18 when liquid level is not enough be supplemented to the cleaning mixture of rich iodine in absorption liquid bath 2 makes as absorbing liquid circulation
With；After analysis iodine, continue to filter, the filtrate containing iodine 90mg/l is added in washing liquid bath 8 by pipeline 14, is passed through filtrate quality
So of percentage ratio 30%2Use as cleaning mixture replenisher；Or in sink, directly supplement the filtrate after original analysis iodine, it is passed through
so2, as fresh wash liquid as recycling next time；Then squeeze into scrubbing tower again and carry out washing absorption；Circulate above-mentioned whole
Individual process.6mg/l containing iodine in the lean iodine gas of row outside during scrubbed tower washing, meet the requirement of environmental protection.Absorb iodine through secondary cycle,
The iodine response rate improves 75%.
Embodiment 3
Iodine, analysis iodine, iodine adopt filtration means after separating out are put forward in the phosphoric acid,diluted producing from phosphate ore production containing iodine
Carry out separating, finally realize solid-liquid separation and be filtrated to get thick iodine and the filtrate containing iodine；By the filtrate containing iodine 70mg/l, by pipeline
14 add in washing liquid bath 8, are passed through so of filtrate quality percentage ratio 35%2As cleaning mixture；Mass percentage concentration is that 20 % are sub-
Metabisulfite solution loads in absorption liquid bath 2 as absorbing liquid, then delivers in absorption tower 1 by pump 3, simultaneously logical toward in absorption tower
Cross pipeline 16 and be passed through extracting gas containing iodine 20mg/l, returned to by circulation line 5 after the absorbing liquid in absorption tower 1 absorbs
Absorb in liquid bath 2, then deliver in absorption tower 1 further through pump 3, continue to absorb, recycle, during this, absorption tower 1 escapes
Gas 15mg/l containing iodine, passed in scrubbing tower 2, then by the cleaning mixture in above-mentioned sink 8 through pump 10 dozens to washing
In the endless tube 12 of tower 7, cleaning mixture carries out spray-absorption by equally distributed four shower nozzles 11, presses the spray of 20mg/l during spray
Density is sprayed, by so in cleaning mixture2Will enter tower in vortex tail gas in iodine molecule be reduced to iodine soluble from
Son, the cleaning mixture containing iodide ion pass through pipeline section 17 flow into washing liquid bath 8 in again through circulating pump 10 dozens sprayed to scrubbing tower 7
Drench, cleaning mixture recycles, the purified lean iodine gas absorbing after washing enters air from tower top.The pump tubing length 9 of cleaning mixture
In point have a branch road 4, control valve 18 is installed in this branch road 4, branch road 4 passes in absorption liquid bath 2, when cleaning mixture recycles
When, the concentration of cleaning mixture is reached to open control valve 18 during 5g/l and be passed through cleaning mixture by this branch road 4 and absorbs in liquid bath as suction
Receive liquid to use；Beat when the concentration absorbing absorbing liquid in liquid bath 2 reaches 30g/l to analysis iodine groove, when absorbing liquid is beaten to analysis iodine groove
Control valve 18 can also be opened when liquid level is not enough be supplemented to the cleaning mixture of rich iodine in absorption liquid bath 2 makes as absorbing liquid circulation
With.After analysis iodine, continue to filter, the filtrate containing iodine 70mg/l is added in washing liquid bath 8 by pipeline 14, is passed through filtrate quality
So of percentage ratio 35%2Use as cleaning mixture replenisher；Or the filtrate after supplement original analysis iodine in sink, it is passed through so2,
As fresh wash liquid as recycling next time；Then squeeze into scrubbing tower again and carry out washing absorption.During scrubbed tower washing
The lean iodine gas 5mg/l containing iodine of outer row, meet the requirement of environmental protection.Absorb iodine through secondary cycle, the iodine response rate improves 65%.
Claims (2)
1. a kind of method putting forward high iodine-containing tail gas absorption rate it is characterised in that: by carry high iodine-containing tail gas absorption rate device realize,
This device includes absorbing liquid bath (2), and the absorbing liquid in this absorption liquid bath (2) pumps in an absorption tower (1), and absorbing liquid flows through absorption
Tower (1) is back in this absorption liquid bath (2) by another pipeline afterwards again, also includes scrubbing tower (7) and sink (8), described suction
The top receiving tower is gas escape port, and this gas escape port is connected by pipeline (6) with the middle part of described scrubbing tower (7),
Described scrubbing tower (7) bottom is communicated with described sink (8) by pipeline section (17), and this scrubbing tower (7) sidepiece passes through one and pumps
Pipeline (9) is communicated with sink (8), and described pump tubing length (9) point has a branch road (4), is provided with control valve in described branch road (4)
(18), this branch road (4) is passed through in described absorption liquid bath (2), is set with a chimney (13) in described scrubbing tower (7), described
Chimney (13) top exceeds the upper end of described scrubbing tower (7), the bottom that described chimney bottom is located in described scrubbing tower (7)；Institute
The scrubbing tower (7) stated is provided with spray equipment, and described spray equipment includes an endless tube (12), described endless tube (12) with described
Pump tubing length (9) communicates, and this endless tube (12) is provided with four shower nozzles (11), and four shower nozzles are upper in described scrubbing tower (7)
Portion；Further comprising the steps of:
A) preparation of cleaning mixture: the filtrate containing iodine after analysis iodine is filtered enters in sink (8), then in described sink (8)
Inside it is passed through so2Use as cleaning mixture；
B) iodine first order absorption: absorbing liquid is loaded and absorbs in liquid bath (2), be then sent by pumping in absorption tower (1), simultaneously toward suction
Receive in tower (1) and the extracting gas containing iodine are passed through by pipeline (16), carry out iodine absorption in described absorption tower, absorb the suction after iodine
Receive liquid to be back in absorption liquid bath (2) from absorption tower (1), then be pumped in absorption tower (1) by circulating pump (3) and carry out iodine again
Absorb, circulation is carried out, the gas containing iodine absorbing tower top effusion during this passes in a scrubbing tower (7)；
C) two grades of absorptions of iodine: the cleaning mixture in step a sink (8) is pumped in the scrubbing tower (7) described in step b, inhales
The gas containing iodine receiving tower effusion enters in this scrubbing tower, and by described cleaning mixture spray-absorption, then this cleaning mixture returns again
Continue by washing absorption again in pumping scrubbing tower to sink, cleaning mixture cyclic absorption utilizes；
D) cleaning mixture switchs to absorbing liquid use: when the cleaning mixture in sink (8) in step c is reached by amount of iodine after recycling
During to 5g/l, open the control valve in branch road (18) and cleaning mixture is passed through in absorption liquid bath as absorbing liquid recycling；
E) iodine of row's analysis outward: after the absorbing liquid in absorption liquid bath recycles suction iodine, when in absorbing liquid, iodide ion concentration reaches 30g/l
When outside arrange, enter carry out in analysis iodine groove analysing iodine, filtration, filtrate enter and are passed through so in sink again2Recycle as cleaning mixture.
2. a kind of method putting forward high iodine-containing tail gas absorption rate according to claim 1 it is characterised in that: described step a
70-95mg/l containing iodine in filtrate after analysis iodine filtration, is passed through so of filtrate quality percentage ratio 25%-45%2Use as cleaning mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434672.3A CN104190211B (en) | 2014-08-29 | 2014-08-29 | Device and method for increasing absorption rate of iodine-containing tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410434672.3A CN104190211B (en) | 2014-08-29 | 2014-08-29 | Device and method for increasing absorption rate of iodine-containing tail gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104190211A CN104190211A (en) | 2014-12-10 |
| CN104190211B true CN104190211B (en) | 2017-01-18 |
Family
ID=52075663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410434672.3A Expired - Fee Related CN104190211B (en) | 2014-08-29 | 2014-08-29 | Device and method for increasing absorption rate of iodine-containing tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104190211B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110585862A (en) * | 2019-09-20 | 2019-12-20 | 瓮福达州化工有限责任公司 | Iodine recovery system of phosphoric acid concentration workshop section |
| CN115487669B (en) * | 2022-10-19 | 2024-08-27 | 厚成科技（南通）有限公司 | Absorption washing tower for lithium hexafluorophosphate tail gas |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004035302A (en) * | 2002-07-02 | 2004-02-05 | Daikin Ind Ltd | Method for recovering iodine and recovering apparatus |
| CN102772982A (en) * | 2011-05-12 | 2012-11-14 | 特力生有限公司 | Method for recycling ammonia gas |
| CN202762294U (en) * | 2012-09-13 | 2013-03-06 | 河南开元金属制品有限公司 | Acid mist purification device |
| CN103011084A (en) * | 2012-12-10 | 2013-04-03 | 瓮福（集团）有限责任公司 | Method for extracting iodine from dehydrate wet method diluted phosphoric acid reaction iodic waste gas |
| CN203469771U (en) * | 2013-08-16 | 2014-03-12 | 甘肃瓮福化工有限责任公司 | Washing system for ammonium phosphate offgas |
| CN203469791U (en) * | 2013-08-16 | 2014-03-12 | 甘肃瓮福化工有限责任公司 | Recover device for extracting iodine in iodine tail gas |
-
2014
- 2014-08-29 CN CN201410434672.3A patent/CN104190211B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104190211A (en) | 2014-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103964382A (en) | Bittern bromine-blowing process | |
| CN104190211B (en) | Device and method for increasing absorption rate of iodine-containing tail gas | |
| CN204768713U (en) | Make things convenient for solid -liquid separation's reation kettle | |
| CN103920359B (en) | A kind of trademark belt coating solvent recovery unit and recovery method | |
| CN208429963U (en) | A kind of oily wastewater regeneration device | |
| CN207042226U (en) | A kind of cold rolling acid mist absorbs automatic circulating system | |
| CN206739921U (en) | A kind of titanium white flour flow design air-flow crushing tail gas secondary waste heat recycling system | |
| CN201543353U (en) | Hydrogen oxygen gas-water separator | |
| CN107569994A (en) | A kind of alkali liquor absorption tower with filler back purge system | |
| CN105861767A (en) | Method for rapidly dissolving fused salt chloride residues and device thereof | |
| CN106039970A (en) | Method for removing sulfur dioxide from sulfuric acid industrial tail gas and recovering sulfuric acid, and apparatus thereof | |
| CN104056535B (en) | A kind of organic absorbent method flue gas desulfurization and denitrification demercuration system | |
| CN206229365U (en) | Rosin resin washes oxidation reaction apparatus | |
| CN206295680U (en) | A kind of ardealite filter protector | |
| CN206751389U (en) | A kind of chlorine recovery system during pyridine compounds and their continuous chlorination | |
| CN205576367U (en) | Oil immersion groove device on chemical fiber production line | |
| CN104437054A (en) | Electrolytic aluminium waste gas treatment integrated device | |
| CN205850310U (en) | The oxime water separation tank that a kind of diacetylmonoxime produces | |
| CN210729140U (en) | Polyvinyl chloride paste resin drying tail gas recovery and purification device | |
| CN211752593U (en) | EO takes off aldehyde refining plant in ethylene oxide production | |
| CN206809803U (en) | Donkey-hide gelatin production evaporator and seperator steam water circulation utilization system | |
| CN102584523A (en) | Semifinished chlorinated solution water washing and alkali washing device used during chlorobenzene production and water washing and alkali washing method | |
| CN207071317U (en) | A kind of composite exhaust gas processor | |
| CN209348397U (en) | A kind of cross-flow type air cleaning Water curtain machine | |
| CN206940658U (en) | A kind of acid waste water processing unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20180829 |