CN203955018U - A kind of spray roasting acid regeneration is containing sour exhaust gas purification system - Google Patents
A kind of spray roasting acid regeneration is containing sour exhaust gas purification system Download PDFInfo
- Publication number
- CN203955018U CN203955018U CN201420250341.XU CN201420250341U CN203955018U CN 203955018 U CN203955018 U CN 203955018U CN 201420250341 U CN201420250341 U CN 201420250341U CN 203955018 U CN203955018 U CN 203955018U
- Authority
- CN
- China
- Prior art keywords
- alkali
- caustic wash
- wash tower
- pipeline
- containing sour
- 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 - Lifetime
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- 239000002253 acid Substances 0.000 title claims abstract description 25
- 239000007921 spray Substances 0.000 title claims abstract description 21
- 238000000746 purification Methods 0.000 title claims abstract description 16
- 230000008929 regeneration Effects 0.000 title claims abstract description 15
- 238000011069 regeneration method Methods 0.000 title claims abstract description 15
- 239000003513 alkali Substances 0.000 claims abstract description 73
- 239000003518 caustics Substances 0.000 claims abstract description 37
- 238000003860 storage Methods 0.000 claims abstract description 13
- 238000005201 scrubbing Methods 0.000 abstract description 9
- 238000004140 cleaning Methods 0.000 abstract description 8
- 238000013459 approach Methods 0.000 abstract description 4
- 230000033228 biological regulation Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 34
- 239000007789 gas Substances 0.000 description 24
- 238000000034 method Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910001868 water Inorganic materials 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000005554 pickling Methods 0.000 description 4
- 238000005304 joining Methods 0.000 description 3
- 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
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000010669 acid-base reaction Methods 0.000 description 1
- 239000002585 base Substances 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
- 238000006243 chemical reaction Methods 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
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002650 habitual effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model relates to a kind of spray roasting acid regeneration 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, joins and on the pipeline between alkali groove and caustic wash tower, establishes alkali lye spray pump.Flowing full pipe is established in described caustic wash tower bottom, connects cesspool.Compared with prior art, the beneficial effects of the utility model are: 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.
Description
Technical field
The utility model relates in the hydrochloric acid technique of regenerating in metallurgy industry tail gas clean-up technology after scrubbing tower, relates in particular to a kind of spray roasting acid regeneration containing sour exhaust gas purification system.
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 the existing < < steel rolling industrial atmosphere pollutant emission standard > > (GB28665-2012) of China controls
3index.
Along with the enhancing of country to the great attention of environmental protection and compatriots' awareness of the legal system, transform for many years habitual 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 utility model provides a kind of spray roasting acid regeneration containing sour exhaust gas purification system, carries out alkali cleaning purification after adopting caustic wash tower or alkali cleaning circulating slot to scrubbing tower containing sour tail gas, makes its pH value approach 7, and reaches the discharge standard of national regulation.
In order to achieve the above object, the utility model is realized 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, joins and on the pipeline between alkali groove and caustic wash tower, establishes alkali lye spray pump.
Flowing full pipe is established in described caustic wash tower bottom, connects cesspool.
Compared with prior art, the beneficial effects of the utility model are:
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.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1. unload alkali pump 2. alkali storage tanks 3. and join alkali groove 4. alkali lye spray pump 5. flowing full pipe 6. caustic wash tower 61. packing layer 62. caustic wash tower chimney 63. shower nozzle 7. caustic wash tower circulating pump 8. cesspools
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further:
See Fig. 1, that the spray roasting acid regeneration with caustic wash tower described in the utility model is containing the structural representation of 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 5 is established in described caustic wash tower 6 bottoms, connects cesspool 8
The sour tail gas clean-up technique that contains based on a kind of spray roasting acid regeneration containing sour exhaust gas purification system, carries out alkali cleaning purification containing sour tail gas after 6 pairs of scrubbing towers of employing caustic wash 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, with unloading alkali pump 1, is transported to 2 storages of alkali storage tank;
2) while joining alkali, with unloading alkali pump 1, alkali is transported to and joins alkali groove 3, adding water, to be mixed with the alkali lye of 10% concentration standby;
3) from pickling line acid regeneration device scrubbing tower, through pipeline, transport containing acid 50～80mg/m
3tail gas from caustic wash tower 6 bottoms, enter, the reverse contact of alkali lye at packing layer 61 with top circulated sprinkling, the acid in tail gas and the alkali generation chemical reaction in alkali lye: HCL+NaOH=NaCL+H
2o, removes HCL wherein; Alkali lye is sent to top by caustic wash tower circulating pump 7 extraction caustic wash tower 6 bottom alkali lye 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 63 at caustic wash tower chimney 62 places, makes tail gas cleaning more thorough, and the supplementary alkali lye spraying flows in circulation alkali liquor downwards;
5) ever-increasing circulation alkali liquor overflows from the flowing full pipe 5 of caustic wash tower 6 bottoms, flows into cesspool 8 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, from caustic wash tower chimney 62, directly discharge.
What described packing layer 61 adopted is PPH packing layer.
The alkali lye of 10% left and right, joining 3 preparations of alkali groove, is squeezed into concentrated base from alkali storage tank 2 and is added water preparation.
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 5 is established in caustic wash tower 6 bottoms, and unnecessary spray liquid enters cesspool 8 from flowing out caustic wash tower 6, the treated qualified rear outer row of decontaminated water treatment system
A kind of spray roasting acid regeneration of the utility model is containing sour exhaust gas purification system, after adopting 6 pairs of scrubbing towers of caustic wash tower, containing sour tail gas, carry out alkali cleaning purification, when in circulation fluid, alkali number is enough, tail gas is after alkali liquid washing, and HCL wherein will all be washed off, then from caustic wash tower chimney 62, 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: take 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 sour approximately 50～80mg/m
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, one is concentration 40% for the alkali of market sale now, and its alkali consumption is: 2.53 ÷ 0.4=6.325Kg/h.
The salt that the alkali wash water overflowing from flowing full pipe 5 produces while taking acid-base reaction out of simultaneously, can avoid the rear plug nozzle of salt accumulation.
Claims (2)
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, 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 is established in described caustic wash tower bottom, connects cesspool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420250341.XU CN203955018U (en) | 2014-05-15 | 2014-05-15 | A kind of spray roasting acid regeneration is containing sour exhaust gas purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420250341.XU CN203955018U (en) | 2014-05-15 | 2014-05-15 | A kind of spray roasting acid regeneration is containing sour exhaust gas purification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203955018U true CN203955018U (en) | 2014-11-26 |
Family
ID=51915660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420250341.XU Expired - Lifetime CN203955018U (en) | 2014-05-15 | 2014-05-15 | A kind of spray roasting acid regeneration is containing sour exhaust gas purification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203955018U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103977685A (en) * | 2014-05-15 | 2014-08-13 | 鞍山创新废酸除硅再生工程有限公司 | Acid-regeneration acid tail gas purification system by using spray roasting method and tail gas purification process |
| CN105174231A (en) * | 2015-08-25 | 2015-12-23 | 王卓 | Concentrating and purifying technology of diluted sulfuric acid |
| CN108939895A (en) * | 2018-08-13 | 2018-12-07 | 华电电力科学研究院有限公司 | SO in a kind of double alkali method desulfurizing cooperation-removal flue gas3System and its working method |
-
2014
- 2014-05-15 CN CN201420250341.XU patent/CN203955018U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103977685A (en) * | 2014-05-15 | 2014-08-13 | 鞍山创新废酸除硅再生工程有限公司 | Acid-regeneration acid tail gas purification system by using spray roasting method and tail gas purification process |
| CN103977685B (en) * | 2014-05-15 | 2015-12-09 | 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 and tail gas clean-up technique |
| CN105174231A (en) * | 2015-08-25 | 2015-12-23 | 王卓 | Concentrating and purifying technology of diluted sulfuric acid |
| CN108939895A (en) * | 2018-08-13 | 2018-12-07 | 华电电力科学研究院有限公司 | SO in a kind of double alkali method desulfurizing cooperation-removal flue gas3System and its working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 114000 6 Yongkang street, Tiexi Economic Development Zone, Anshan, Liaoning. Patentee after: ANSHAN CHUANGXIN ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 114000 6 Yongkang street, Tiexi Economic Development Zone, Anshan, Anshan, Liaoning Patentee before: ANSHAN CHUANGXIN WASTE ACID DESILICATION REGENERATION ENGINEERING CO.,LTD. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141126 |
|
| CX01 | Expiry of patent term |