CN103480252A - Method for treating acid gas containing hydrogen sulfide - Google Patents
Method for treating acid gas containing hydrogen sulfide Download PDFInfo
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- CN103480252A CN103480252A CN201210194691.4A CN201210194691A CN103480252A CN 103480252 A CN103480252 A CN 103480252A CN 201210194691 A CN201210194691 A CN 201210194691A CN 103480252 A CN103480252 A CN 103480252A
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- hydrogen sulfide
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- 239000007789 gas Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 76
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 20
- 239000002253 acid Substances 0.000 title claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 64
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 59
- 239000011593 sulfur Substances 0.000 claims abstract description 59
- 230000008569 process Effects 0.000 claims abstract description 41
- 238000001179 sorption measurement Methods 0.000 claims abstract description 28
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 18
- 230000003647 oxidation Effects 0.000 claims abstract description 16
- 238000009833 condensation Methods 0.000 claims abstract description 15
- 230000005494 condensation Effects 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 230000003197 catalytic effect Effects 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 7
- 239000002918 waste heat Substances 0.000 claims abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims description 20
- 238000000926 separation method Methods 0.000 claims description 13
- 230000008929 regeneration Effects 0.000 claims description 10
- 238000011069 regeneration method Methods 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000002737 fuel gas Substances 0.000 claims description 5
- 150000003464 sulfur compounds Chemical class 0.000 claims description 4
- 230000001172 regenerating effect Effects 0.000 claims description 3
- 238000007872 degassing Methods 0.000 claims 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000002912 waste gas Substances 0.000 abstract 1
- 239000005864 Sulphur Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- PVXVWWANJIWJOO-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-N-ethylpropan-2-amine Chemical compound CCNC(C)CC1=CC=C2OCOC2=C1 PVXVWWANJIWJOO-UHFFFAOYSA-N 0.000 description 1
- GVGLGOZIDCSQPN-PVHGPHFFSA-N Heroin Chemical compound O([C@H]1[C@H](C=C[C@H]23)OC(C)=O)C4=C5[C@@]12CCN(C)[C@@H]3CC5=CC=C4OC(C)=O GVGLGOZIDCSQPN-PVHGPHFFSA-N 0.000 description 1
- QMMZSJPSPRTHGB-UHFFFAOYSA-N MDEA Natural products CC(C)CCCCC=CCC=CC(O)=O QMMZSJPSPRTHGB-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- -1 sulfide hydrogen Chemical class 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/20—Capture or disposal of greenhouse gases of methane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
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- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention relates to a method for treating acid gas containing hydrogen sulfide, wherein the acid gas containing hydrogen sulfide and air enter a combustion furnace, are combusted and enter a waste heat boiler to generate medium-high pressure steam; after the sulfur in the process gas containing liquid sulfur is separated by condensation, the process gas is fed into first-stage Claus reactor, the sulfur-containing process gas after reaction is re-condensed and separated into liquid sulfur, the process gas is fed into second-stage Claus reactor, the sulfur-containing process gas is re-condensed and separated, the process gas is fed into direct oxidation or catalytic reactor, and the air partially degassed by liquid sulfur and combustible gas with a certain proportion are fed into said reactor to make oxidation reaction, SO that the sulfur-containing compound can be converted into SO2Then the process gas is introduced into the adsorption bed layer, and SO is contained in the gas2Directly discharging the waste gas to the atmosphere through a chimney after adsorption heat exchange; the method has sulfur recovery rate of 99.9% or more, and is also suitable for other SO-containing materials2Or sulfide tail gas treatment process, and the tail gas meets the new national emission standard.
Description
Technical field
The present invention relates to a kind of hydrogen sulfide containing Sour gas disposal method, the tail gas after the method is processed does not need burning, directly qualified discharge.Applicable all sulfuric acid gas, belong to natural gas and refinery's acid gas manufacture field.
Background technology
Sulfur dioxide is one of major pollutants in atmosphere, is to weigh the important symbol whether atmosphere is polluted.The compulsory standard " discharge standard of air pollutants " that China came into effect in 1997 (GB16297-1996), is stipulated SO
2existing pollution sources and the new the highest permission discharge quality of pollution sources concentration are respectively 1200mg/m
3and 960mg/m
3.Standard increasingly stringent along with the countries in the world environment protection; " petroleum refining industry emission of industrial pollutants standard " the regulation sour gas retracting device concentration of emission limit value that is about to promulgate is: during 2011.7.1～2014.6.30, existing enterprise is 960mg/m
3, from the existing enterprise 2014.7.1 and the newly-built enterprise from 2011.7.1, be 400mg/m
3.Be about to " the Gas Purification Factory atmosphere pollutants emission standards " promulgated, the tail gas SO of its sulfur reclamation tail gas burning stove and acid gas incinerator
2the discharge standard regulation: during 2011.1.1～2014.12.31, existing enterprise is 1000mg/m
3, from the existing enterprise 2015.1.1 and the newly-built enterprise from 2011.1.1, be 500mg/m
3.This standard is to SO
2discharge stricter, if press New emission standard, implement, can allow existing Gas Purification Factory and refinery tail-gas discharge be faced with formidable challenges.
The Claus sulphur technique processed that the sulfide hydrogen Sour gas disposal proposes from Englishize scholar Claus in 1883 so far, the history of more than 100 year, the Claus recovery technology of sulfur also experiences a process made constant progress.Particularly, from the sixties in last century, abroad develop and realize that industrialized sulphur recovery and tail gas treatment process have tens of kinds.As: the low-temperature Claus techniques such as Sulfreen, MCRC, Clauspol; The H such as Seletox, Hi-Activity, SuperClaus, Clinsulf
2the direct selective oxidation process of S; And the selective catalytic oxidations such as Selectox, Modop and Super claus are basic sulfur recovery technique.These technique sulfur recovery rates all are being improved in various degree, but are difficult to meet the SO of substandard
2emission request.And SCOT technique and many improvement technique, the HCR technique of NIGI company, the BSR/MDEA technique of Parsons company, the tail gas Reducing and absorption techniques such as RAR technique of KTI company can, by absorbing after the sulfur-containing tail gas hydrogenation, obviously reduce SO in tail gas again
2discharge, even can hang down below 100ppm.Domestic some patented technologies that also form on recovery technology of sulfur, as: 96104817.4, ZL200710049014.2,200710048360.9,200710058567.4,24200810022175.7,200910058717.0 and 200910065268.2 etc., all being improved at existing recovery technology of sulfur, also all improve in various degree sulfur recovery rate, reduced the discharge of sulfur-containing compound in tail gas.
Due to the restriction that is subject to the claus reaction thermodynamical equilibrium, except tail gas reduction class technique and employing alkali liquor absorption mode, SO in the tail gas of all the other techniques discharges
2all do not reach and be about to the SO carried out
2country's New emission standard.Reducing and absorption tail gas treatment process complexity, investment, running cost and energy consumption are all quite high; Alkali cleaning absorbs shortcomings such as there being again secondary pollution.
Summary of the invention
The objective of the invention is to utilize the combination of renewable absorbing process and existing sulfide hydrogen recovery processing technique, propose a kind of hydrogen sulfide containing Sour gas disposal method, compare with Reducing and absorption class technique, can be implemented to tail gas SO
2in the time of minimum discharge, also there is significantly energy-saving and cost-reducing, saving and invest, reduce the advantages such as running cost.
Hydrogen sulfide containing Sour gas disposal method of the present invention, particular content is as follows:
(1) allocate air into containing the acid hydrogen sulfide gas of high concentration, enter combustion furnace, after condenser separates sulphur, enter one-level claus reaction device, separate through condenser A again that sulphur is laggard enters secondary claus reaction device, or enter again three grades of claus reaction devices, then separate through condenser B;
(2) secondary claus reaction device or three grades of claus reaction devices sulfur-bearing Process Gas out pass through direct oxidation or catalytic reactor again, and selective oxidation of sulfur containing compounds in particular is become to SO
2;
(3) containing SO
2high temperature gas flow directly enters SO
2adsorption reaction, occur in adsorption bed, and the tail gas after absorption is at SO
2content during lower than national standard, enters condenser C, reclaims after heat by smoke stack emission;
(4) SO in tail gas after absorption
2when content is above standard, adsorption bed is switched to reproduced state, passes into reducibility gas, and the sulfur-bearing Process Gas of regeneration, after condenser D separates molten sulfur, return to front any one-level claus reaction device, and the molten sulfur of condensation separation enters spout.
The hydrogen sulfide containing Sour gas disposal method of the second that the present invention proposes, particular content is as follows:
(1) the very low sour gas of sulfide hydrogen, the fuel gas that first proportioning is certain and air, through direct oxidation or catalytic reactor, enter adsorption bed after reaction, adsorption reaction occurs, and the gas after absorption is at SO
2content, lower than under national standard, enters heat reclaiming system, after the recovery heat, is discharged.
(2) when after absorption, tail gas is above standard, adsorption bed is switched to reproduced state, passes into reducibility gas, and regeneration sulfur-bearing Process Gas is after the condensation separation molten sulfur, and this Process Gas returns to combustion furnace again.
Technique of the present invention is carried out on existing technique basis, is mainly by the direct oxidation of tail gas high temperature or catalytic reaction, and selective oxidation of sulfur containing compounds in particular becomes SO
2after, carrying out high temperature adsorption, adsorbent can be regenerated, and regeneration gas is returned to claus reaction or the combustion furnace of front, can save investment 30%～50%, and Energy Intensity Reduction is more than 50%, simple to operate, easily miniaturization, the SO in tail gas
2can be controlled at reduced levels.This technique can also be processed other sulfurous gas.
Know-why: Claus tail gases or other sulfur-containing tail gas are after direct oxidation or catalytic reaction, and all sulfur-containing compounds change into SO
2, then by the SO in efficient adsorption bed absorption tail gas
2, the tail gas after absorption is meeting under national minimum discharge standard and can directly discharge; The SO of discharge after absorption
2while surpassing discharge standard, be switched to another adsorption bed absorption.The rear bed of absorption passes into reducibility gas and is regenerated, and the regeneration adsorption bed can be recycled, and the sulfur-bearing Process Gas born again returns to the claus reaction device after condensation separation sulphur, guarantees like this SO that exhaust emissions goes out
2in very low limit value, the sulfur recovery rate of device is greater than 99.9%.
The present invention has the following advantages:
(1) to the sulfide hydrogen sour gas out after, SO in emission
2content can reach the new environmental emission standard of country, even hang down and adsorbed fully, substantially realize zero-emission.
(2) SO after absorption
2through regeneration, return to again front claus reaction device after condensation separation, the sulfur recovery rate of this technique reaches more than 99.9%.
(3) this technique also is applicable to other containing SO
2perhaps the tail gas treatment process of sulfide, can make its tail gas meet the new discharge standard of country.
The accompanying drawing explanation
Fig. 1 the first sulfide hydrogen Sour gas disposal technique
The treatment process of Fig. 2 sulfur compound tail gas
Wherein: 1 combustion furnace, 2 waste heat boilers, 3 condensers, 4 liquid sulfur pits, 5 one-level claus reaction devices, 6 secondary claus reaction devices, 7 direct oxidations or catalytic reactor, 8 adsorption bed, 9 adsorption bed, 10 chimneys
The specific embodiment
As shown in Figure 1:
After the proportioning that hydrogen sulfide containing acid gas gas and air carry out, enter combustion furnace 1, contained H after burning
2s and SO
2volume ratio at 2: 1, then carry out energy recovery through waste heat boiler 2, produce mesohigh steam, enter condenser 3 containing the molten sulfur Process Gas, molten sulfur after condensation separation enters liquid sulfur pit 4, Process Gas enters one-level claus reaction device 5, reacted sulfur-bearing Process Gas enters condenser A, molten sulfur after condensation separation enters liquid sulfur pit 4, Process Gas enters secondary claus reaction device 6, reacted Process Gas enters condenser B, molten sulfur after condensation separation enters liquid sulfur pit 4, Process Gas enters direct oxidation or catalytic reactor 7, now, also enter reactor 7 through degassed air and a certain proportion of fuel gas of liquid sulfur pit 4, carry out oxidation reaction, make sulfur-containing compound all be transformed into SO
2, then this Process Gas is passed into to adsorption bed 8, SO in gas
2enter condenser C after absorption, heat exchange directly is discharged into atmosphere by chimney 10,
SO in the tail gas that adsorption bed is discharged
2when content surpasses emission request, the Process Gas of now being discharged by direct oxidation or catalytic reactor is switched to another bed and is adsorbed, and the bed 9 after absorption passes into reducibility gas, go out the air-flow of regenerator bed through condenser D, condensation and separation of molten sulfur enter liquid sulfur pit 4, Process Gas returns in one-level claus reaction device 5 or secondary claus reaction device 6, and the adsorption bed completely of regenerating can enter next sorption cycle again.
As shown in Figure 2:
After the tail gas of sulfur compound and air, fuel gas carry out proportioning, enter direct oxidation or catalytic reactor 7, the air of proportioning and fuel gas make sulfur compound be transformed into SO
2, then this Process Gas is passed into to adsorption bed 8, SO in gas
2enter condenser C after absorption, heat exchange directly is discharged into atmosphere by chimney 10.
SO in the tail gas that adsorption bed is discharged
2when content surpasses emission request, the Process Gas of now being discharged by reactor 7 is switched to another bed and is adsorbed, and the bed 9 after absorption passes into reducibility gas, go out the air-flow of regenerator bed through condenser D, condensation and separation of molten sulfur enter liquid sulfur pit 4, the regeneration air stream of now going back sulfur-bearing returns in one-level claus reaction device 5 or secondary claus reaction device 6.The adsorption bed completely of regenerating enters next sorption cycle.
The temperature of described adsorption bed is at 100～500 ° of C.
Described hydrogen sulfide containing acid gas gas space velocity is at 50～2000h
-1.
The described regeneration gas volumetric concentration passed into is: 5～50%H
2s or 0.5～100%H
2perhaps overheated methane gas.
Described regeneration temperature is chosen in: 150～500 ° of C.
Claims (6)
1. a hydrogen sulfide containing Sour gas disposal method, is characterized in that: after hydrogen sulfide containing acid gas gas and air carry out proportioning, enter combustion furnace, contained H after burning
2s and SO
2volume ratio at 2: 1, then carry out energy recovery through waste heat boiler, produce mesohigh steam, enter condenser containing the molten sulfur Process Gas, the molten sulfur that condensation generates enters liquid sulfur pit, Process Gas after condensation separation enters one-level claus reaction device, reacted sulfur-bearing Process Gas enters condenser A, molten sulfur enters liquid sulfur pit, Process Gas after condensation separation enters secondary claus reaction device, enter condenser B containing the molten sulfur Process Gas, molten sulfur enters liquid sulfur pit, Process Gas after condensation separation enters direct oxidation or catalytic reactor, the part air enters this reactor after molten sulfur degasification, and the proportioning fuel gas is reacted, make sulfur-containing compound be transformed into SO
2, then this Process Gas is passed into to adsorption bed, SO in gas
2enter condenser C after absorption, heat exchange directly is discharged into atmosphere by chimney,
SO in the tail gas that adsorption bed is discharged
2when content surpasses emission request, the Process Gas of now being discharged by direct oxidation or catalytic reactor is switched to another bed and is adsorbed, and the bed after absorption passes into reducibility gas, go out the air-flow of regenerator bed through condenser D, condensation and separation of molten sulfur enter liquid sulfur pit, Process Gas returns in one-level claus reaction device or secondary claus reaction device, and the adsorption bed completely of regenerating enters next sorption cycle.
2. hydrogen sulfide containing Sour gas disposal method according to claim 1, it is characterized in that: the Process Gas that enters direct oxidation or catalytic reactor is the tail gas of claus reaction, or directly uses hydrogen sulfide gas or other sulfur compound tail gas of low concentration.
3. the Sour gas disposal method of hydrogen sulfide according to claim 1, it is characterized in that: the temperature of adsorption bed is at 100～500 ° of C.
4. hydrogen sulfide containing Sour gas disposal method according to claim 1, it is characterized in that: hydrogen sulfide containing acid gas gas space velocity is at 50～2000h
-1.
5. hydrogen sulfide containing Sour gas disposal method according to claim 1, it is characterized in that: the regeneration gas volumetric concentration passed into is: 5～50%H
2s or 0.5～100%H
2perhaps overheated methane gas.
6. hydrogen sulfide containing Sour gas disposal method according to claim 1, it is characterized in that: regeneration temperature is chosen in: 150～500 ° of C.
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| CN201210194691.4A CN103480252A (en) | 2012-06-13 | 2012-06-13 | Method for treating acid gas containing hydrogen sulfide |
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|---|---|---|---|
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105129741A (en) * | 2014-06-06 | 2015-12-09 | 中国石油化工股份有限公司 | Process for reducing SO2 emission concentration of sulfur recovery device |
| CN105293445A (en) * | 2015-11-18 | 2016-02-03 | 山东迅达化工集团有限公司 | Low sulfur emission sulphur recovery process |
| CN105293442A (en) * | 2014-06-06 | 2016-02-03 | 中国石油化工股份有限公司 | Method for decreasing flue gas SO2 emission concentration in sulphur apparatus |
| CN105314606A (en) * | 2014-06-06 | 2016-02-10 | 中国石油化工股份有限公司 | Liquid sulfur degassing technology |
| CN105314607A (en) * | 2015-12-01 | 2016-02-10 | 山东迅达化工集团有限公司 | Low-sulfur discharging and sulfur recycling process of intermediate concentration acid gas |
| CN105327599A (en) * | 2014-06-06 | 2016-02-17 | 中国石油化工股份有限公司 | Method for processing exhaust gas obtained by degasification of liquid sulfur |
| CN105399057A (en) * | 2015-11-18 | 2016-03-16 | 山东迅达化工集团有限公司 | Sulfur recovery technology realizing low sulfur emission |
| CN105480951A (en) * | 2016-01-11 | 2016-04-13 | 神华集团有限责任公司 | Liquid sulfur degassing system and liquid sulfur degassing method |
| CN106829875A (en) * | 2017-03-08 | 2017-06-13 | 安徽宣城金宏化工有限公司 | A kind of handling process and equipment for carbon disulphide production Process Gas |
| CN106914103A (en) * | 2017-04-11 | 2017-07-04 | 德阳劲达节能科技有限责任公司 | A kind of Claus tail gases low-temp desulfurization system and technique |
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| CN113713558A (en) * | 2020-05-26 | 2021-11-30 | 中国石油天然气股份有限公司 | Sulfur dioxide adsorption process |
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