CN103977685A - Acid-regeneration acid tail gas purification system by using spray roasting method and tail gas purification process - Google Patents
Acid-regeneration acid tail gas purification system by using spray roasting method and tail gas purification process Download PDFInfo
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- CN103977685A CN103977685A CN201410208440.6A CN201410208440A CN103977685A CN 103977685 A CN103977685 A CN 103977685A CN 201410208440 A CN201410208440 A CN 201410208440A CN 103977685 A CN103977685 A CN 103977685A
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- Prior art keywords
- alkali
- tail gas
- wash tower
- pipeline
- acid
- 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.)
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- 239000002253 acid Substances 0.000 title claims abstract description 58
- 239000007921 spray Substances 0.000 title claims abstract description 45
- 238000000746 purification Methods 0.000 title claims abstract description 37
- 238000011069 regeneration method Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003513 alkali Substances 0.000 claims abstract description 223
- 238000003860 storage Methods 0.000 claims abstract description 21
- 238000013459 approach Methods 0.000 claims abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 135
- 238000004140 cleaning Methods 0.000 claims description 56
- 239000003518 caustics Substances 0.000 claims description 47
- 230000008929 regeneration Effects 0.000 claims description 30
- 238000005201 scrubbing Methods 0.000 claims description 18
- 239000002585 base Substances 0.000 claims description 14
- 230000032258 transport Effects 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000005554 pickling Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 7
- 238000005304 joining Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 229910001868 water Inorganic materials 0.000 claims description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 238000012946 outsourcing Methods 0.000 claims description 6
- 239000010865 sewage Substances 0.000 claims description 6
- 239000000284 extract Substances 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 58
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000010669 acid-base reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940067573 brown iron oxide Drugs 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The invention relates to an acid-regeneration acid tail gas purification system by using a spray roasting method and a tail gas purification process. A tail gas purification system adopting an alkaline tower comprises the alkali wash tower, an alkali preparation tank and an alkali storage tank, wherein the alkali wash tower, the alkali preparation tank and the alkali storage tank are communicated through pipelines; an alkali wash tower circulating pump is arranged on a self-circulation pipeline of the alkali wash tower; an alkali discharge pump I is arranged on a pipeline between the alkali storage tank and the alkali preparation tank, and an alkali liquor spray pump is arranged on a pipeline between the alkali preparation tank and the alkali wash tower. A tail gas purification system adopting an alkali wash circulating tank comprises the alkali wash circulating tank and a concentrated alkali tank, wherein the alkali wash circulating tank and the concentrated alkali tank are communicated with each other through a pipeline; an alkali wash tank circulating pump is arranged on a self-circulation pipeline of the alkali wash circulating tank, and an alkali discharge pump II is arranged on a pipeline between the alkali wash circulating tank and the concentrated alkali tank. Compared with the prior art, the acid-regeneration acid tail gas purification system has the benefits that (1) the acid tail gas is purified in an alkali wash manner through the wash tower, a pH valve approaches 7, and the treated acid tail gas achieves the emission standard of the nation; (2) the system is stable in operation, small in fluctuation and low in alkali consumption; and (3) the system is small in investment and fast in effect and has popularization and utilization values.
Description
Technical field
The tail gas clean-up technology after scrubbing tower that the present invention relates to regenerate in metallurgy industry in hydrochloric acid technique, relates in particular to a kind of spray roasting acid regeneration containing sour exhaust gas purification system and tail gas clean-up technique.
Background technology
Before metallurgical works steel rolling, will carry out pickling, the spent acid that pickling line produces adopts spray roasting to regenerate conventionally, can produce 18～20% regenerated acid and return to pickling line and use, and obtains the brown iron oxide of high-quality simultaneously.The tail gas that this technique produces carries out 3 sections of washings at scrubbing tower, but still contains approximately 50～80mg/m of acid after washing
3, can't reach the highest permission concentration of emission 30mg/m that China's existing " steel rolling industrial atmosphere pollutant emission standard " (GB28665-2012) controls
3index.
Along with the great attention of country to environmental protection and the enhancing of compatriots' awareness of the legal system, transform for many years usual technique, solve acid mist to the pollution problem of environment to reach GB requirement, just become the new problem of current research, implement acid regeneration device exhaust alkali washing process, there is stable operation, fluctuate little, the advantage that alkaline consumption is low, can make tail gas that acid regeneration process produces after washing pH value close to 7, and lower than discharging standards 30mg/m
3index, can thoroughly solve regenerating unit exhaust emissions containing acid and concentration problem not up to standard.
Summary of the invention
The invention provides a kind of spray roasting acid regeneration containing sour exhaust gas purification system, carry out alkali cleaning purification containing sour tail gas after adopting caustic wash tower or alkali cleaning circulating slot to scrubbing tower, make its pH value approach 7, and reach the discharge standard of national regulation; The present invention provides the tail gas clean-up technique containing sour exhaust gas purification system based on a kind of spray roasting acid regeneration simultaneously.
In order to achieve the above object, the present invention realizes by the following technical solutions:
A kind of spray roasting acid regeneration is containing sour exhaust gas purification system, comprise caustic wash tower by pipeline connection, join alkali groove and alkali storage tank, on described caustic wash tower self-loopa pipeline, establish caustic wash tower circulating pump, alkali storage tank and join on the pipeline between alkali groove and establish and unload alkali pump one, joins and on the pipeline between alkali groove and caustic wash tower, establishes alkali lye spray pump.
Flowing full pipe one is established in described caustic wash tower bottom, connects cesspool one.
Based on a kind of spray roasting acid regeneration containing sour exhaust gas purification system containing sour tail gas clean-up technique, carry out alkali cleaning purification containing sour tail gas after adopting caustic wash tower to scrubbing tower, make its pH value approach 7, and reach the discharge standard of national regulation; Comprise the steps:
1) outsourcing alkali, transports to by alkali storage tank with tank car, is transported to the storage of alkali storage tank with unloading alkali pump one;
2) while joining alkali, with unloading alkali pump one, alkali is transported to and joins alkali groove, adding water, it is for subsequent use to be mixed with the alkali lye of 10% concentration;
3) transport through pipeline from pickling line acid regeneration device scrubbing tower containing acid 50～80mg/m
3tail gas enter from caustic wash tower bottom, the reverse contact of alkali lye at packing layer with top circulated sprinkling, the alkali generation chemical reaction in acid and alkali lye in tail gas: HCL+NaOH=NaCL+H
2o, removes HCL wherein; Alkali lye is sent to top by caustic wash tower circulating pump extraction caustic wash tower bottom alkali lye and carries out circulated sprinkling;
4) alkali lye spray pump extracts the alkali lye of joining in alkali groove and supplements spray to the shower nozzle one at caustic wash tower chimney place, tail gas is cleaned more thorough, and the alkali lye that supplements spray flows into downwards in circulation alkali liquor;
5) ever-increasing circulation alkali liquor overflows from the flowing full pipe of caustic wash tower bottom, flows into cesspool one and send Sewage Disposal treated qualified rear outer row;
6) tail gas after alkali lye spray cleans, acid content≤30mg/m
3, reach discharging standards, directly discharge from caustic wash tower chimney.
A kind of spray roasting acid regeneration, containing sour exhaust gas purification system, comprises alkali cleaning circulating slot and concentrated base groove by pipeline connection, on the self-loopa pipeline of described alkali cleaning circulating slot, establishes alkaline bath circulating pump, on the pipeline between alkali cleaning circulating slot and concentrated base groove, establishes and unloads alkali pump two.
Described alkali cleaning circulating slot top is provided with containing sour gas inlet pipe, blast pipe, filler pipe and adds alkali pipe, and bottom is provided with the flowing full pipe two that connects cesspool two, is provided with alkali lye shower nozzle two in gas inlet pipe, and it is 150-200mm that inlet tube inserts the degree of depth in alkali lye.
Based on a kind of spray roasting acid regeneration containing sour exhaust gas purification system containing sour tail gas clean-up technique, carry out alkali cleaning purification containing sour tail gas after adopting alkali cleaning circulating slot to scrubbing tower, make its pH value approach 7, and reach the discharge standard of national regulation; Comprise the steps:
1) outsourcing alkali, transports to by concentrated base groove with tank car, is transported to the storage of concentrated base groove with unloading alkali pump two;
2) transport through pipeline from pickling line acid regeneration device scrubbing tower containing acid 50～80mg/m
3tail gas enter from alkali cleaning circulating slot top gas inlet pipe;
3) wash tail gas, the alkali lye generation chemical reaction of the tail gas after washing in immersion tube and alkali cleaning circulating slot: HCL+NaOH=NaCL+H at shower nozzle two places of inlet tube with alkali cleaning circulating pump circulated sprinkling
2o, removes HCL wherein; Alkali lye is sent to top by alkaline bath circulating pump extraction alkali cleaning circulating slot bottom alkali lye and carries out circulated sprinkling;
4) filler pipe on alkali cleaning circulating slot and add alkali pipe and at any time alkali lye is supplemented, ensures that the required alkali lye of reaction has enough quantity and concentration;
5) ever-increasing circulation alkali liquor overflows from the flowing full pipe two of alkali cleaning circulating slot bottom, flows into cesspool two and send Sewage Disposal treated qualified rear outer row;
6) tail gas through alkali lye spray and after cleaning, acid content≤30mg/m
3, reaching discharging standards, the blast pipe from alkali cleaning circulating slot directly discharges.
Compared with prior art, the invention has the beneficial effects as follows:
1) by carrying out alkali cleaning purification containing sour tail gas after scrubbing tower, make its pH value approach 7, and reach the discharge standard of national regulation;
2) system stable operation, fluctuate littlely, alkali consumption is low;
3) small investment, instant effect, has utilization and extention and is worth.
Brief description of the drawings
Fig. 1 is structural representation one of the present invention (the spray roasting acid regeneration with caustic wash tower is containing sour exhaust gas purification system).
Fig. 2 is structural representation two of the present invention (the spray roasting acid regeneration with alkali cleaning circulating slot is containing sour exhaust gas purification system).
In figure: 1. unload alkali pump one 2. alkali storage tanks 3. and join alkali groove 4. alkali lye spray pump 5. flowing full pipe one 6. caustic wash tower 61. packing layer 62. caustic wash tower chimney 63. shower nozzle one 7. caustic wash tower circulating pump 8. cesspools 1 and unload alkali pump 2 10. concentrated base groove 11. alkali cleaning circulating slot 12. alkali cleaning circulating pump 13. gas inlet pipe 14. shower nozzle 2 15. filler pipes 16. and add alkali pipe 17. blast pipe 18. flowing full pipe 2 19. cesspools two
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
See Fig. 1, the structural representation of the spray roasting acid regeneration with caustic wash tower of the present invention containing sour exhaust gas purification system, comprise caustic wash tower 6 by pipeline connection, join alkali groove 3 and alkali storage tank 2, on described caustic wash tower 6 self-loopa pipelines, establish caustic wash tower circulating pump 7, alkali storage tank 2 and join on the pipeline between alkali groove 3 and establish and unload alkali pump 1, joins on the pipeline between alkali groove 3 and caustic wash tower 6 and establishes alkali lye spray pump 4.
Flowing full pipe 1 is established in described caustic wash tower 6 bottoms, connects cesspool 1.
The sour tail gas clean-up technique that contains based on a kind of spray roasting acid regeneration containing sour exhaust gas purification system, adopts caustic wash tower 6 to carrying out alkali cleaning purification containing sour tail gas after scrubbing tower, makes its pH value approach 7, and reaches the discharge standard of national regulation; Comprise the steps:
1) outsourcing alkali, transports to alkali storage tank 2 with tank car other, is transported to alkali storage tank 2 and stores with unloading alkali pump 1;
2) while joining alkali, with unloading alkali pump 1, alkali is transported to and joins alkali groove 3, adding water, it is for subsequent use to be mixed with the alkali lye of 10% concentration;
3) transport through pipeline from pickling line acid regeneration device scrubbing tower containing acid 50～80mg/m
3tail gas enter from caustic wash tower 6 bottoms, the reverse contact of alkali lye at packing layer 61 with top circulated sprinkling, the alkali generation chemical reaction in acid and alkali lye in tail gas: HCL+NaOH=NaCL+H
2o, removes HCL wherein; Alkali lye extracts caustic wash tower 6 bottom alkali lye by caustic wash tower circulating pump 7 and is sent to top and carries out circulated sprinkling;
4) alkali lye spray pump 4 extracts the alkali lye of joining in alkali groove 3 and supplements spray to the shower nozzle 1 at caustic wash tower chimney 62 places, tail gas is cleaned more thorough, and the alkali lye that supplements spray flows into downwards in circulation alkali liquor;
5) ever-increasing circulation alkali liquor overflows from the flowing full pipe 1 of caustic wash tower 6 bottoms, flows into cesspool 1 and send Sewage Disposal treated qualified rear outer row;
6) tail gas after alkali lye spray cleans, acid content≤30mg/m
3, reach discharging standards, directly discharge from caustic wash tower chimney 62.
What described packing layer 61 adopted is PPH packing layer.
The alkali lye of 10% left and right is prepared joining alkali groove 3, squeezes into the concentrated base preparation that adds water from alkali storage tank 2.
After the new alkali liquor absorption part acid mist spraying on caustic wash tower chimney 62, flow automatically on the packing layer 61 of circulation section, and sneak in circulated sprinkling liquid, flowing full pipe 1 is established in caustic wash tower 6 bottoms, and unnecessary spray liquid enters cesspool 1 from flowing out caustic wash tower 6, the treated qualified rear outer row of decontaminated water treatment system
See Fig. 2, the structural representation of the spray roasting acid regeneration with alkali cleaning circulating slot of the present invention containing sour exhaust gas purification system, comprise alkali cleaning circulating slot 11 and concentrated base groove 10 by pipeline connection, on the self-loopa pipeline of described alkali cleaning circulating slot 11, establish alkaline bath circulating pump 12, on the pipeline between alkali cleaning circulating slot 11 and concentrated base groove 10, establish and unload alkali pump 29.
Described alkali cleaning circulating slot 11 tops are provided with containing sour gas inlet pipe 13, blast pipe 17, filler pipe 15 and add alkali pipe 16, bottom is provided with the flowing full pipe 2 18 that connects cesspool 2 19, in gas inlet pipe 13, be provided with alkali lye shower nozzle 2 14, it is 150-200mm that inlet tube 13 inserts the degree of depth in alkali lye.
The sour tail gas clean-up technique that contains based on a kind of spray roasting acid regeneration containing sour exhaust gas purification system, adopts alkali cleaning circulating slot 11 to carrying out alkali cleaning purification containing sour tail gas after scrubbing tower, makes its pH value approach 7, and reaches the discharge standard of national regulation; Comprise the steps:
1) outsourcing alkali, transports to concentrated base groove 10 with tank car other, is transported to concentrated base groove 10 and stores with unloading alkali pump 29;
2) transport through pipeline from pickling line acid regeneration device scrubbing tower containing acid 50～80mg/m
3tail gas enter from alkali cleaning circulating slot 11 top gas inlet pipes 13;
3) wash tail gas, the alkali lye generation chemical reaction of the tail gas after washing in immersion tube and alkali cleaning circulating slot 11: HCL+NaOH=NaCL+H at shower nozzle 2 14 places of inlet tube 13 with alkali cleaning circulating pump 12 circulated sprinklings
2o, removes HCL wherein; Alkali lye extracts alkali cleaning circulating slot 11 bottom alkali lye by alkaline bath circulating pump 12 and is sent to top and carries out circulated sprinkling;
4) filler pipe on alkali cleaning circulating slot 11 15 and add alkali pipe 16 and at any time alkali lye is supplemented, ensures that the required alkali lye of reaction has enough quantity and concentration;
5) ever-increasing circulation alkali liquor overflows from the flowing full pipe 2 18 of alkali cleaning circulating slot 11 bottoms, flows into cesspool 2 19 and send Sewage Disposal treated qualified rear outer row;
6) tail gas through alkali lye spray and after cleaning, acid content≤30mg/m
3, reaching discharging standards, the blast pipe 17 from alkali cleaning circulating slot 11 directly discharges.
A kind of spray roasting acid regeneration of the present invention is containing sour exhaust gas purification system, adopt caustic wash tower 6 or alkali cleaning circulating slot 11 to carrying out alkali cleaning purification containing sour tail gas after scrubbing tower, when in circulation fluid, alkali number is enough, tail gas is after alkali liquid washing, HCL wherein will all be washed off, then the blast pipe 17 from caustic wash tower chimney 62 or alkali cleaning circulating slot enters atmosphere, at this moment the main component of tail gas is carbon dioxide, nitrogen and water vapour, can be to environment, new alkali lye supplements at any time, can thoroughly wash the remaining acid mist of circulation cleaning section off.
The calculating of alkali consumption: taking treating capacity as 7m
3/ h acid regeneration device is example, the about 24000m of its tail gas amount
3/ h, after scrubbing tower, tail gas is containing approximately 50～80mg/m of acid
3by upper limit value, hydrochloricly in tail gas be: 24000 × 80 ÷ 1000 ÷ 1000=1.92Kg/h, in and 1Kg hydrochloric acid theory need the NaOH of 1.2Kg, loss coefficient calculates by 1.1: 1.92X1.2X1.1=2.53Kg/h, the alkali of market sale is now generally concentration 40%, and its alkali consumption is: 2.53 ÷ 0.4=6.325Kg/h.
The salt that the alkali wash water overflowing from flowing full pipe 1 or flowing full pipe 2 18 produces while taking acid-base reaction out of simultaneously, can avoid plug nozzle after salt accumulation.
Claims (6)
1. a spray roasting acid regeneration is containing sour exhaust gas purification system, it is characterized in that, comprise caustic wash tower by pipeline connection, join alkali groove and alkali storage tank, on described caustic wash tower self-loopa pipeline, establish caustic wash tower circulating pump, alkali storage tank and join on the pipeline between alkali groove and establish and unload alkali pump one, joins and on the pipeline between alkali groove and caustic wash tower, establishes alkali lye spray pump.
2. a kind of spray roasting acid regeneration according to claim 1, containing sour exhaust gas purification system, is characterized in that, flowing full pipe one is established in described caustic wash tower bottom, connects cesspool one.
Based on a kind of spray roasting acid regeneration claimed in claim 1 containing sour exhaust gas purification system containing sour tail gas clean-up technique, carry out alkali cleaning purification containing sour tail gas after adopting caustic wash tower to scrubbing tower, make its pH value approach 7, and reach the discharge standard of national regulation; It is characterized in that, comprise the steps:
1) outsourcing alkali, transports to by alkali storage tank with tank car, is transported to the storage of alkali storage tank with unloading alkali pump one;
2) while joining alkali, with unloading alkali pump one, alkali is transported to and joins alkali groove, adding water, it is for subsequent use to be mixed with the alkali lye of 10% concentration;
3) transport through pipeline from pickling line acid regeneration device scrubbing tower containing acid 50～80mg/m
3tail gas enter from caustic wash tower bottom, the reverse contact of alkali lye at packing layer with top circulated sprinkling, the alkali generation chemical reaction in acid and alkali lye in tail gas: HCL+NaOH=NaCL+H
2o, removes HCL wherein; Alkali lye is sent to top by caustic wash tower circulating pump extraction caustic wash tower bottom alkali lye and carries out circulated sprinkling;
4) alkali lye spray pump extracts the alkali lye of joining in alkali groove and supplements spray to the shower nozzle one at caustic wash tower chimney place, tail gas is cleaned more thorough, and the alkali lye that supplements spray flows into downwards in circulation alkali liquor;
5) ever-increasing circulation alkali liquor overflows from the flowing full pipe of caustic wash tower bottom, flows into cesspool one, send Sewage Disposal treated qualified rear outer row;
6) tail gas after alkali lye spray cleans, acid content≤30mg/m
3, reach discharging standards, directly discharge from caustic wash tower chimney.
4. a spray roasting acid regeneration is containing sour exhaust gas purification system, it is characterized in that, comprise alkali cleaning circulating slot and concentrated base groove by pipeline connection, on the self-loopa pipeline of described alkali cleaning circulating slot, establish alkaline bath circulating pump, on the pipeline between alkali cleaning circulating slot and concentrated base groove, establish and unload alkali pump two.
5. a kind of spray roasting acid regeneration according to claim 4 is containing sour exhaust gas purification system, it is characterized in that, described alkali cleaning circulating slot top is provided with containing sour gas inlet pipe, blast pipe, filler pipe and adds alkali pipe, bottom is provided with the flowing full pipe two that connects cesspool two, in gas inlet pipe, be provided with alkali lye shower nozzle two, it is 150-200mm that inlet tube inserts the degree of depth in alkali lye.
6. the sour tail gas clean-up technique that contains containing sour exhaust gas purification system based on a kind of spray roasting acid regeneration claimed in claim 4, after adopting alkali cleaning circulating slot to scrubbing tower, carry out alkali cleaning purification containing sour tail gas, make its pH value approach 7, and reach the discharge standard of national regulation; It is characterized in that, comprise the steps:
1) outsourcing alkali, transports to by concentrated base groove with tank car, is transported to the storage of concentrated base groove with unloading alkali pump two;
2) transport through pipeline from pickling line acid regeneration device scrubbing tower containing acid 50～80mg/m
3tail gas enter from alkali cleaning circulating slot top gas inlet pipe;
3) wash tail gas, the alkali lye generation chemical reaction of the tail gas after washing in immersion tube and alkali cleaning circulating slot: HCL+NaOH=NaCL+H at shower nozzle two places of inlet tube with alkali cleaning circulating pump circulated sprinkling
2o, removes HCL wherein; Alkali lye is sent to top by alkaline bath circulating pump extraction alkali cleaning circulating slot bottom alkali lye and carries out circulated sprinkling;
4) filler pipe on alkali cleaning circulating slot and add alkali pipe and at any time alkali lye is supplemented, ensures that the required alkali lye of reaction has enough quantity and concentration;
5) ever-increasing circulation alkali liquor overflows from the flowing full pipe two of alkali cleaning circulating slot bottom, flows into cesspool two, send Sewage Disposal treated qualified rear outer row;
6) tail gas through alkali lye spray and after cleaning, acid content≤30mg/m
3, reaching discharging standards, the blast pipe from alkali cleaning circulating slot directly discharges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410208440.6A CN103977685B (en) | 2014-05-15 | 2014-05-15 | A kind of spray roasting acid regeneration is containing sour exhaust gas purification system and tail gas clean-up technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410208440.6A CN103977685B (en) | 2014-05-15 | 2014-05-15 | A kind of spray roasting acid regeneration is containing sour exhaust gas purification system and tail gas clean-up technique |
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| CN103977685B CN103977685B (en) | 2015-12-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173934A (en) * | 2018-10-11 | 2019-01-11 | 长治市霍家工业有限公司 | A kind of susceptible to plugging device of solution caustic wash tower spray |
| CN109663466A (en) * | 2019-01-15 | 2019-04-23 | 山东京博石油化工有限公司 | A kind of hydrogen sulfide alkaline cleaner and method for mixed alkanes dehydrogenation unit |
| CN111871977A (en) * | 2020-06-29 | 2020-11-03 | 江苏沙钢集团有限公司 | Acid regeneration liquid supply pipeline flushing system and flushing method |
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| US4990317A (en) * | 1989-11-20 | 1991-02-05 | International Technology Corporation | Process for the treatment of hot waste gas containing hydrogen chloride |
| JPH10337439A (en) * | 1997-06-09 | 1998-12-22 | Hitachi Ltd | Exhaust gas treatment device of fluorine-containing organic halogen compound and treatment thereof |
| CN201578982U (en) * | 2009-12-18 | 2010-09-15 | 中冶南方工程技术有限公司 | Novel acid generation washing tower |
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| CN203155067U (en) * | 2012-10-26 | 2013-08-28 | 中国石油化工股份有限公司 | An oxidation alkaline wash deep purification system for yellow phosphorus exhaust |
| CN203955018U (en) * | 2014-05-15 | 2014-11-26 | 鞍山创新废酸除硅再生工程有限公司 | A kind of spray roasting acid regeneration is containing sour exhaust gas purification system |
-
2014
- 2014-05-15 CN CN201410208440.6A patent/CN103977685B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4990317A (en) * | 1989-11-20 | 1991-02-05 | International Technology Corporation | Process for the treatment of hot waste gas containing hydrogen chloride |
| JPH10337439A (en) * | 1997-06-09 | 1998-12-22 | Hitachi Ltd | Exhaust gas treatment device of fluorine-containing organic halogen compound and treatment thereof |
| CN201578982U (en) * | 2009-12-18 | 2010-09-15 | 中冶南方工程技术有限公司 | Novel acid generation washing tower |
| CN201643967U (en) * | 2010-03-22 | 2010-11-24 | 江苏蓝之达环境科技股份有限公司 | Industrial waste gas treatment and recycling device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109173934A (en) * | 2018-10-11 | 2019-01-11 | 长治市霍家工业有限公司 | A kind of susceptible to plugging device of solution caustic wash tower spray |
| CN109663466A (en) * | 2019-01-15 | 2019-04-23 | 山东京博石油化工有限公司 | A kind of hydrogen sulfide alkaline cleaner and method for mixed alkanes dehydrogenation unit |
| CN111871977A (en) * | 2020-06-29 | 2020-11-03 | 江苏沙钢集团有限公司 | Acid regeneration liquid supply pipeline flushing system and flushing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103977685B (en) | 2015-12-09 |
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