CN106039970A - Method for removing sulfur dioxide from sulfuric acid industrial tail gas and recovering sulfuric acid, and apparatus thereof - Google Patents
Method for removing sulfur dioxide from sulfuric acid industrial tail gas and recovering sulfuric acid, and apparatus thereof Download PDFInfo
- Publication number
- CN106039970A CN106039970A CN201610650543.7A CN201610650543A CN106039970A CN 106039970 A CN106039970 A CN 106039970A CN 201610650543 A CN201610650543 A CN 201610650543A CN 106039970 A CN106039970 A CN 106039970A
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- China
- Prior art keywords
- sulfuric acid
- hydrogen peroxide
- absorption tower
- tail gas
- sulfur dioxide
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 title claims abstract description 109
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 27
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 82
- 239000007789 gas Substances 0.000 claims abstract description 77
- 239000007921 spray Substances 0.000 claims abstract description 50
- 238000010521 absorption reaction Methods 0.000 claims abstract description 46
- 239000002253 acid Substances 0.000 claims abstract description 23
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 238000003860 storage Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 3
- 239000011593 sulfur Substances 0.000 claims abstract description 3
- 235000011149 sulphuric acid Nutrition 0.000 claims description 19
- 239000001117 sulphuric acid Substances 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 9
- 238000006477 desulfuration reaction Methods 0.000 description 6
- 230000023556 desulfurization Effects 0.000 description 6
- 230000004907 flux Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- -1 Absorption tower 10 Chemical compound 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007979 citrate buffer Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003827 upregulation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/507—Sulfur oxides by treating the gases with other liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The invention discloses a method for removing sulfur dioxide from sulfuric acid industrial tail gas and recovering sulfuric acid, and an apparatus thereof, and relates to a sulfuric acid industrial tail gas treatment method and an apparatus thereof. The method is characterized in that a hydrogen peroxide solution is used in an absorption tower to remove sulfur dioxide in flowing sulfuric acid industrial tail gas and recover sulfuric acid. The apparatus comprises the absorption tower, a spraying device and a demister, the spraying device is composed of a circulating pump, a metering pump, a hydrogen peroxide storage tank and a spray thrower, the absorption tower is provided with a gas inlet and a gas outlet, a collection tank, a gas distribution plate, a diluted acid resistant packing, the spray thrower and the demister are sequentially arranged in the absorption tower, the bottom of the collection tank is provided with a circulation opening and a liquid discharge opening, the circulation opening is connected with the spray thrower through the circulation pump, the liquid discharge opening is provided with a valve, and the hydrogen peroxide storage tank is connected with the liquid inlet of the circulation pump through the metering pump. The method and the apparatus have the advantages of good removal effect of sulfur dioxide in the sulfuric acid industrial tail gas, realization of reduction of the sulfuric acid production cost and prevention of secondary pollution due to recycling of sulfur, simple device structure, simplicity in operation, less investment and low running cost.
Description
Technical field
The present invention relates to exhaust gas treating method and the device of sulfuric acid industry, specifically a kind of removing sulfuric acid industry tail gas
Middle sulfur dioxide, the method and device of recovery sulphuric acid.
Background technology
China's sulfuric acid industry year SO2Discharge capacity about 100,000 tons, accounts for whole nation SO2The 0.4% of discharge capacity, accounts for chemical industry SO2Row
Put the 9.0% of total amount, be SO bigger in chemical industry2Emission source.GB 26132-2010 " sulfuric acid industry pollutant emission mark
Accurate " formally implement on March 1st, 2011, there is a tightened up regulation for sulfuric acid industry sulfur dioxide (SO2) emissions, at present, I
State's gas washing in SA production mainly uses double-absorption technique, owing to being limited by device conversion ratio, and its sulfur dioxide in tail gas content
High, it is difficult to meet the requirement of its standard.For that purpose it is necessary to increase exhaust gas processing device, current sulfuric acid industry vent gas treatment mainly should
With ammonia process, amine process, Citrate Buffer, alkaline process etc., the said method removal effect to sulfuric acid industry sulfur dioxide in tail gas
Difference, desulfurization degree is low.The problems such as the device structure realizing these methods is complicated, there is investment big, and operating cost is high, these problems
Existence so that it is in sulfuric acid industry promote run into bigger obstacle.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, it is provided that a kind of to sulfuric acid industry sulfur dioxide in tail gas
Removal effect good, desulfurization degree is high, the removing that after purification, the sulphuric acid low, that produce of the sulfur dioxide concentration in tail gas is recycled
Sulfuric acid industry sulfur dioxide in tail gas, the method and device of recovery sulphuric acid.
The technical scheme is that, a kind of removing sulfuric acid industry sulfur dioxide in tail gas, the method reclaiming sulphuric acid, it is special
Levy and be: in absorption tower, use the sulfuric acid industry sulfur dioxide in tail gas of hydrogen peroxide solution removing flowing, reclaim sulphuric acid, specifically
Step is as follows:
A, by the sulfuric acid industry tail gas containing sulfur dioxide by bottom, absorption tower air inlet input；
B, spray equipment are sprayed hydrogen peroxide solution by the spray thrower being located at top, absorption tower, and tail gas and hydrogen peroxide are on absorption tower
After interior haptoreaction, then removed mist by the demister above spray thrower, finally discharged by the gas outlet at top, absorption tower；
C, hydrogen peroxide solution fall in the collecting tank bottom absorption tower after reacting with the sulfur dioxide in tail gas, work as collecting tank
When the hydrogen peroxide concentration of interior solution is higher than 0.1%, solution is entered spray equipment circulated sprinkling by the circulation port bottom collecting tank, when
When hydrogen peroxide concentration is less than 0.1% in solution, one part is entered by the leakage fluid dram bottom collecting tank the circulation of dry absorption section
As the regulation dense water of acid in acid tank, a part enters spray equipment circulated sprinkling after supplementing hydrogen peroxide solution.
The hydrogen peroxide content of the hydrogen peroxide solution in this method b step controls at 0.1%-5%, the hydrogen peroxide solution of spray
Control at 1:500-1:100 with the liquid air volume ratio of the sulfuric acid industry tail gas of input.
The removing sulfuric acid industry sulfur dioxide in tail gas designed for realizing said method, the device reclaiming sulphuric acid, it is special
Levying and be, including absorption tower, spray equipment and demister, spray equipment is by circulating pump, dosing pump, hydrogen peroxide storage tank and spray thrower
Forming, bottom, absorption tower and top are respectively equipped with air inlet and gas outlet, and in absorption tower, air inlet is arranged over gas distribution grid,
Offering gas distribution holes on gas distribution grid uniformly, top, absorption tower is provided with spray thrower, between gas distribution grid and spray thrower
It is provided with specific surface area 100m2/m3-300m2/m3The filler of resistance to diluted acid, spray thrower is arranged over demister, is provided with bottom absorption tower
Collecting tank, is provided with circulation port and leakage fluid dram bottom collecting tank, circulation port connects with spray thrower through circulating pump, and leakage fluid dram is provided with valve
Door, hydrogen peroxide storage tank connects with circulating pump inlet through dosing pump.
In this device, the percent opening of gas distribution grid is at 40%-60%.
The invention has the beneficial effects as follows, use hydrogen peroxide spray sulfuric acid industry tail gas, remove sulfur dioxide therein, recovery
Sulphuric acid, good to the removal effect of sulfuric acid industry sulfur dioxide in tail gas, desulfurization degree is high, the sulfur dioxide concentration in tail gas after purification
Low, sulfur is recycled, and not only reduces the production cost of sulphuric acid and prevents secondary pollution, it is achieved the equipment knot of the method
Structure is simple, easy and simple to handle, invest little, operating cost is low.
Accompanying drawing explanation
Accompanying drawing is a kind of structural representation of the present invention, is also the schematic diagram of a kind of embodiment.
Detailed description of the invention
A kind of remove sulfuric acid industry sulfur dioxide in tail gas, reclaim sulphuric acid method, in absorption tower use dioxygen water-soluble
Loss of thick fluid, except the sulfuric acid industry sulfur dioxide in tail gas flowed, recovery sulphuric acid, specifically comprises the following steps that
A, by the sulfuric acid industry tail gas containing sulfur dioxide by bottom, absorption tower air inlet input；
B, spray equipment are sprayed hydrogen peroxide solution by the spray thrower being located at top, absorption tower, and the hydrogen peroxide of hydrogen peroxide solution contains
Amount controls at 0.1%-5%, and the hydrogen peroxide solution of spray controls 1 with the liquid air volume ratio of the sulfuric acid industry tail gas of input:
500-1:100, tail gas and hydrogen peroxide are in absorption tower after haptoreaction, then are removed in tail gas by the demister above spray thrower
Mist, is finally discharged by the gas outlet at top, absorption tower, and the sulfur dioxide in tail gas and hydrogen peroxide react generation sulphuric acid；
C, hydrogen peroxide solution fall in the collecting tank bottom absorption tower after reacting with the sulfur dioxide in tail gas, work as collecting tank
When the hydrogen peroxide concentration of interior solution is higher than 0.1%, solution is entered spray equipment circulated sprinkling by the circulation port bottom collecting tank, when
When hydrogen peroxide concentration is less than 0.1% in solution, one part is entered acid-producing apparatus dry suction work by the leakage fluid dram bottom collecting tank
As the regulation dense water of acid in the circulation acid tank of section, a part enters spray equipment circulated sprinkling after supplementing hydrogen peroxide solution,
The volume of the hydrogen peroxide solution supplemented is identical with the liquor capacity that leakage fluid dram is discharged, it is ensured that the long-play of device.
The removing sulfuric acid industry sulfur dioxide in tail gas designed for realizing said method, the device reclaiming sulphuric acid, including
Absorption tower 10, spray equipment and demister 8, spray equipment is by circulating pump 3, dosing pump 2, hydrogen peroxide storage tank 1 and spray thrower 7 groups
Becoming, bottom, absorption tower 10 and top are respectively equipped with air inlet 11 and gas outlet 9, and in absorption tower 10, air inlet 11 is arranged over gas
Distribution grid 5, gas distribution grid 5 is offered gas distribution holes uniformly, and percent opening, at 40%-60%, can make the gas of input
It is uniformly distributed.Top, absorption tower 10 is provided with spray thrower 7, is provided with specific surface area 100m between gas distribution grid 5 and spray thrower 72/m3-
300m2/m3The filler of resistance to diluted acid 6, spray thrower 7 is arranged over demister 8, is provided with collecting tank 4, collecting tank 4 end bottom absorption tower 10
Portion is provided with circulation port and leakage fluid dram 13, and circulation port connects with spray thrower 7 through circulating pump 3, and leakage fluid dram 13 is provided with valve 12, dioxygen
Water storage tank 1 connects with circulating pump 3 inlet through dosing pump 2.
During use, air inlet 11 is connected with the offgas outlet of acid-producing apparatus, leakage fluid dram 13 and acid-producing apparatus dry absorption section
Circulation acid tank connect, collecting tank 4 in add concentration be the hydrogen peroxide solution of 0.1-5%, in hydrogen peroxide storage tank 1 addition dense
Spend higher hydrogen peroxide solution.Sulfuric acid industry tail gas containing sulfur dioxide is entered by bottom, absorption tower air inlet, and circulating pump will be double
Oxygen aqueous solution pumps in the spray thrower on top, absorption tower, and under hydrogen peroxide solution is drenched by top, gas-liquid is filled out at the resistance to diluted acid in the middle of tower
Being fully contacted reaction in the bed of material, the sulfur dioxide in tail gas is by receipts that hydrogen peroxide sorption enhanced is that dilute sulfuric acid falls into bottom absorption tower
In collection groove.When in collecting tank the hydrogen peroxide concentration of solution higher than 0.1% time, solution by the circulation port bottom collecting tank through circulating pump
Enter spray thrower, it is achieved circulated sprinkling；When hydrogen peroxide concentration is less than 0.1% in solution, open valve by one part by receiving
The circulation acid tank that the leakage fluid dram of collection trench bottom enters dry absorption section is interior as the regulation dense water of acid, and a part is supplementary by dosing pump
Appropriate hydrogen peroxide solution, controls hydrogen peroxide content at 0.1%-5%, then enters back into spray thrower spray.Pass through dosing pump
The volume of the hydrogen peroxide solution supplemented is identical with the liquor capacity that leakage fluid dram is discharged, it is ensured that the long-play of device.
Using said apparatus is 150m to flow3/ h, content of sulfur dioxide are 1300mg/Nm3Sulfuric acid industry tail gas carry out
Processing, adding concentration in collecting tank is the hydrogen peroxide solution of 5%, and hydrogen peroxide spray flux is 1.2m3/ h, in the tail gas after process
Content of sulfur dioxide is down to 40-60mg/Nm3, process the dilute sulfuric acid 58Kg reclaiming concentration 13.2% for 26 hours.
Using said apparatus is 23000Nm to exhaust flow3/ h, content of sulfur dioxide are 1300mg/Nm3Troilite system
The industrial tail gas that acid equipment produces processes, and adding concentration in collecting tank is the hydrogen peroxide solution of 2%, hydrogen peroxide spray flux
For spray flux 180m3/ h, the sulfur dioxide in tail gas content after process is down to 40-60mg/Nm3, day reclaim the diluted acid of concentration 13%
8.5 tons, all add and inhale circulation acid tank to dry, folding hundred acid yield 1.1 tons can be improved day.
Using the present invention to remove sulfuric acid industry sulfur dioxide in tail gas, reclaim sulphuric acid, desulfurization degree is high, removal effect is good, only
After change, the sulfur dioxide concentration in tail gas is low, and the diluted acid of generation is recovered to sulfuric acid production system recycling, not only achieves and subtracts
Row reduces pollution, reduces again gas washing in SA production cost, belongs to the desulfurization technology of green cleaning.Absorption tower simple in construction, operation letter
Just, invest little, operating cost is low, effective, preferably popularization and application in sulfuric acid industry tail gas desulfurization engineering.
Claims (4)
1. one kind removes sulfuric acid industry sulfur dioxide in tail gas, the method reclaiming sulphuric acid, it is characterised in that: use in absorption tower
The sulfuric acid industry sulfur dioxide in tail gas of hydrogen peroxide solution removing flowing, recovery sulphuric acid, specifically comprise the following steps that
A, by the sulfuric acid industry tail gas containing sulfur dioxide by bottom, absorption tower air inlet input；
B, spray equipment are sprayed hydrogen peroxide solution by the spray thrower being located at top, absorption tower, and tail gas connects in absorption tower with hydrogen peroxide
After touching reaction, then removed mist by the demister above spray thrower, finally discharged by the gas outlet at top, absorption tower；
C, hydrogen peroxide solution fall into after reacting with the sulfur dioxide in tail gas in the collecting tank bottom absorption tower, when molten in collecting tank
When the hydrogen peroxide concentration of liquid is higher than 0.1%, solution is entered spray equipment circulated sprinkling by the circulation port bottom collecting tank, works as solution
When middle hydrogen peroxide concentration is less than 0.1%, one part is entered by the leakage fluid dram bottom collecting tank the circulation acid tank of dry absorption section
Interior as the regulation dense water of acid, a part is entrance spray equipment circulated sprinkling after supplementing hydrogen peroxide solution.
Removing sulfuric acid industry sulfur dioxide in tail gas the most according to claim 1, the method reclaiming sulphuric acid, its feature exists
In: the hydrogen peroxide content of the hydrogen peroxide solution in b step controls at 0.1%-5%, the hydrogen peroxide solution of spray and the sulfur of input
The liquid air volume ratio of acid industrial tail gas controls at 1:500-1:100.
3. removing sulfuric acid industry sulfur dioxide in tail gas, the device of recovery sulphuric acid, it is characterised in that include absorption tower, spray dress
Putting and demister, spray equipment is made up of circulating pump, dosing pump, hydrogen peroxide storage tank and spray thrower, and bottom, absorption tower and top are divided
Not being provided with air inlet and gas outlet, in absorption tower, air inlet is arranged over gas distribution grid, and gas distribution grid is offered uniformly
Gas distribution holes, top, absorption tower is provided with spray thrower, is provided with specific surface area 100m between gas distribution grid and spray thrower2/m3-
300m2/m3The filler of resistance to diluted acid, spray thrower is arranged over demister, is provided with collecting tank, is provided with bottom collecting tank bottom absorption tower
Circulation port and leakage fluid dram, circulation port connects with spray thrower through circulating pump, and leakage fluid dram is provided with valve, and hydrogen peroxide storage tank is through dosing pump
Connect with circulating pump inlet.
Removing sulfuric acid industry sulfur dioxide in tail gas the most according to claim 3, the device of recovery sulphuric acid, its feature exists
In: the percent opening of described gas distribution grid is at 40%-60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610650543.7A CN106039970A (en) | 2016-08-09 | 2016-08-09 | Method for removing sulfur dioxide from sulfuric acid industrial tail gas and recovering sulfuric acid, and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610650543.7A CN106039970A (en) | 2016-08-09 | 2016-08-09 | Method for removing sulfur dioxide from sulfuric acid industrial tail gas and recovering sulfuric acid, and apparatus thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106039970A true CN106039970A (en) | 2016-10-26 |
Family
ID=57481773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610650543.7A Pending CN106039970A (en) | 2016-08-09 | 2016-08-09 | Method for removing sulfur dioxide from sulfuric acid industrial tail gas and recovering sulfuric acid, and apparatus thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN106039970A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109224798A (en) * | 2018-10-24 | 2019-01-18 | 北京美斯顿科技开发有限公司 | A kind of desulfurization sulphuric acid plant and vehicular desulphurization plant |
| CN110407181A (en) * | 2019-08-19 | 2019-11-05 | 广东新生环保科技股份有限公司 | A tail gas sulfur dioxide acid recovery system |
| CN111908432A (en) * | 2020-09-09 | 2020-11-10 | 江苏庆峰工程集团有限公司 | Production method and production device for refining 98% sulfuric acid for electronic industry |
-
2016
- 2016-08-09 CN CN201610650543.7A patent/CN106039970A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109224798A (en) * | 2018-10-24 | 2019-01-18 | 北京美斯顿科技开发有限公司 | A kind of desulfurization sulphuric acid plant and vehicular desulphurization plant |
| CN110407181A (en) * | 2019-08-19 | 2019-11-05 | 广东新生环保科技股份有限公司 | A tail gas sulfur dioxide acid recovery system |
| CN111908432A (en) * | 2020-09-09 | 2020-11-10 | 江苏庆峰工程集团有限公司 | Production method and production device for refining 98% sulfuric acid for electronic industry |
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Application publication date: 20161026 |