CA1241182A - Separation par voie oxyde de l'hydrogene sulfure en presence dans des debits gazeux - Google Patents

Separation par voie oxyde de l'hydrogene sulfure en presence dans des debits gazeux

Info

Publication number: CA1241182A
Authority: CA; Canada
Prior art keywords: hydrogen sulfide; thiosulfate; gas stream; reaction zone; lean
Prior art date: 1985-12-30
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

Application number

CA000498768A

Other languages

English (en)

Inventor

Christiaan P. Van Dijk

Aage Solbakken

Maury I. Schlossman

Walter A. Cronkright

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

MW Kellogg Co

Original Assignee

MW Kellogg Co

Priority date (The priority date 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 date listed.)

1985-12-30

Filing date

1985-12-30

Publication date

1988-08-30

1985-12-30 Application filed by MW Kellogg Co filed Critical MW Kellogg Co

1985-12-30 Priority to CA000498768A priority Critical patent/CA1241182A/fr

1988-08-30 Application granted granted Critical

1988-08-30 Publication of CA1241182A publication Critical patent/CA1241182A/fr

Status Expired legal-status Critical Current

Links

239000007789 gas Substances 0.000 title claims abstract description 111
RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 99
229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 96
230000001590 oxidative effect Effects 0.000 title description 3
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 49
238000000034 method Methods 0.000 claims abstract description 42
239000000243 solution Substances 0.000 claims abstract description 36
239000007864 aqueous solution Substances 0.000 claims abstract description 32
-1 thiosulfate ions Chemical class 0.000 claims abstract description 28
238000004064 recycling Methods 0.000 claims abstract description 3
238000006243 chemical reaction Methods 0.000 claims description 93
DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 claims description 53
229940006280 thiosulfate ion Drugs 0.000 claims description 17
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 13
229910052760 oxygen Inorganic materials 0.000 claims description 13
239000001301 oxygen Substances 0.000 claims description 13
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
239000002253 acid Substances 0.000 claims description 6
150000008044 alkali metal hydroxides Chemical class 0.000 claims description 6
229910052799 carbon Inorganic materials 0.000 claims description 5
239000000463 material Substances 0.000 claims description 5
238000012856 packing Methods 0.000 claims description 5
238000010926 purge Methods 0.000 claims description 5
239000006172 buffering agent Substances 0.000 claims description 4
229910019142 PO4 Inorganic materials 0.000 claims description 3
239000008188 pellet Substances 0.000 claims description 3
239000010452 phosphate Substances 0.000 claims description 3
NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
235000021317 phosphate Nutrition 0.000 claims description 3
239000007787 solid Substances 0.000 claims description 3
ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 2
239000004254 Ammonium phosphate Substances 0.000 claims description 2
229910052783 alkali metal Inorganic materials 0.000 claims description 2
229910000288 alkali metal carbonate Inorganic materials 0.000 claims description 2
150000008041 alkali metal carbonates Chemical class 0.000 claims description 2
150000001340 alkali metals Chemical class 0.000 claims description 2
239000001099 ammonium carbonate Substances 0.000 claims description 2
235000012501 ammonium carbonate Nutrition 0.000 claims description 2
229910000148 ammonium phosphate Inorganic materials 0.000 claims description 2
235000019289 ammonium phosphates Nutrition 0.000 claims description 2
MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 2
229910052936 alkali metal sulfate Inorganic materials 0.000 claims 2
239000000919 ceramic Substances 0.000 claims 1
230000008569 process Effects 0.000 abstract description 28
238000007254 oxidation reaction Methods 0.000 abstract description 19
230000003647 oxidation Effects 0.000 abstract description 18
239000006193 liquid solution Substances 0.000 abstract description 12
239000001257 hydrogen Substances 0.000 abstract description 9
229910052739 hydrogen Inorganic materials 0.000 abstract description 9
230000009467 reduction Effects 0.000 abstract description 9
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 5
229940048910 thiosulfate Drugs 0.000 description 48
239000007788 liquid Substances 0.000 description 25
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
229910052717 sulfur Inorganic materials 0.000 description 19
239000011593 sulfur Substances 0.000 description 19
239000000047 product Substances 0.000 description 15
150000002500 ions Chemical class 0.000 description 10
VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
238000006722 reduction reaction Methods 0.000 description 9
CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
230000008929 regeneration Effects 0.000 description 7
238000011069 regeneration method Methods 0.000 description 7
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 6
230000008901 benefit Effects 0.000 description 6
239000003345 natural gas Substances 0.000 description 5
238000011084 recovery Methods 0.000 description 5
150000004764 thiosulfuric acid derivatives Chemical class 0.000 description 5
RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
XYXNTHIYBIDHGM-UHFFFAOYSA-N ammonium thiosulfate Chemical compound [NH4+].[NH4+].[O-]S([O-])(=O)=S XYXNTHIYBIDHGM-UHFFFAOYSA-N 0.000 description 4
239000001569 carbon dioxide Substances 0.000 description 4
229910002092 carbon dioxide Inorganic materials 0.000 description 4
150000002431 hydrogen Chemical class 0.000 description 4
AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 4
235000019345 sodium thiosulphate Nutrition 0.000 description 4
229910052720 vanadium Inorganic materials 0.000 description 4
LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 4
238000005406 washing Methods 0.000 description 4
VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
239000000908 ammonium hydroxide Substances 0.000 description 3
239000003054 catalyst Substances 0.000 description 3
ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 3
150000003839 salts Chemical class 0.000 description 3
238000000926 separation method Methods 0.000 description 3
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
238000010521 absorption reaction Methods 0.000 description 2
229910001854 alkali hydroxide Inorganic materials 0.000 description 2
230000015572 biosynthetic process Effects 0.000 description 2
150000007942 carboxylates Chemical class 0.000 description 2
239000003518 caustics Substances 0.000 description 2
239000003245 coal Substances 0.000 description 2
MCWXGJITAZMZEV-UHFFFAOYSA-N dimethoate Chemical compound CNC(=O)CSP(=S)(OC)OC MCWXGJITAZMZEV-UHFFFAOYSA-N 0.000 description 2
239000002737 fuel gas Substances 0.000 description 2
ZMZDMBWJUHKJPS-UHFFFAOYSA-N hydrogen thiocyanate Natural products SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
238000011068 loading method Methods 0.000 description 2
239000010446 mirabilite Substances 0.000 description 2
APVPOHHVBBYQAV-UHFFFAOYSA-N n-(4-aminophenyl)sulfonyloctadecanamide Chemical compound CCCCCCCCCCCCCCCCCC(=O)NS(=O)(=O)C1=CC=C(N)C=C1 APVPOHHVBBYQAV-UHFFFAOYSA-N 0.000 description 2
239000007800 oxidant agent Substances 0.000 description 2
150000004053 quinones Chemical class 0.000 description 2
230000004044 response Effects 0.000 description 2
229910052938 sodium sulfate Inorganic materials 0.000 description 2
RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 description 2
235000011152 sodium sulphate Nutrition 0.000 description 2
HAEPBEMBOAIUPN-UHFFFAOYSA-L sodium tetrathionate Chemical compound O.O.[Na+].[Na+].[O-]S(=O)(=O)SSS([O-])(=O)=O HAEPBEMBOAIUPN-UHFFFAOYSA-L 0.000 description 2
238000003860 storage Methods 0.000 description 2
QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
239000004215 Carbon black (E152) Substances 0.000 description 1
UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
238000005273 aeration Methods 0.000 description 1
150000001412 amines Chemical class 0.000 description 1
150000001491 aromatic compounds Chemical class 0.000 description 1
239000002585 base Substances 0.000 description 1
238000009835 boiling Methods 0.000 description 1
239000000872 buffer Substances 0.000 description 1
230000003139 buffering effect Effects 0.000 description 1
235000019846 buffering salt Nutrition 0.000 description 1
239000006227 byproduct Substances 0.000 description 1
239000012295 chemical reaction liquid Substances 0.000 description 1
239000003795 chemical substances by application Substances 0.000 description 1
229910017052 cobalt Inorganic materials 0.000 description 1
239000010941 cobalt Substances 0.000 description 1
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
230000000536 complexating effect Effects 0.000 description 1
239000008139 complexing agent Substances 0.000 description 1
238000010276 construction Methods 0.000 description 1
239000000356 contaminant Substances 0.000 description 1
238000001816 cooling Methods 0.000 description 1
JJCFRYNCJDLXIK-UHFFFAOYSA-N cyproheptadine Chemical compound C1CN(C)CCC1=C1C2=CC=CC=C2C=CC2=CC=CC=C21 JJCFRYNCJDLXIK-UHFFFAOYSA-N 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
238000006477 desulfuration reaction Methods 0.000 description 1
230000023556 desulfurization Effects 0.000 description 1
238000010586 diagram Methods 0.000 description 1
239000003085 diluting agent Substances 0.000 description 1
238000010790 dilution Methods 0.000 description 1
239000012895 dilution Substances 0.000 description 1
XALJLKNTPLIEGK-UHFFFAOYSA-L dioxido-oxo-sulfanylidene-$l^{6}-sulfane;iron(2+) Chemical compound [Fe+2].[O-]S([O-])(=O)=S XALJLKNTPLIEGK-UHFFFAOYSA-L 0.000 description 1
229910001882 dioxygen Inorganic materials 0.000 description 1
230000005611 electricity Effects 0.000 description 1
230000008030 elimination Effects 0.000 description 1
238000003379 elimination reaction Methods 0.000 description 1
239000003546 flue gas Substances 0.000 description 1
239000012530 fluid Substances 0.000 description 1
239000008246 gaseous mixture Substances 0.000 description 1
238000002309 gasification Methods 0.000 description 1
238000010438 heat treatment Methods 0.000 description 1
229930195733 hydrocarbon Natural products 0.000 description 1
150000002430 hydrocarbons Chemical class 0.000 description 1
230000007062 hydrolysis Effects 0.000 description 1
238000006460 hydrolysis reaction Methods 0.000 description 1
230000002209 hydrophobic effect Effects 0.000 description 1
238000010952 in-situ formation Methods 0.000 description 1
239000007791 liquid phase Substances 0.000 description 1
235000015250 liver sausages Nutrition 0.000 description 1
230000003340 mental effect Effects 0.000 description 1
238000002156 mixing Methods 0.000 description 1
239000000203 mixture Substances 0.000 description 1
230000004048 modification Effects 0.000 description 1
238000012986 modification Methods 0.000 description 1
229910052759 nickel Inorganic materials 0.000 description 1
229910052757 nitrogen Inorganic materials 0.000 description 1
230000001473 noxious effect Effects 0.000 description 1
229940099990 ogen Drugs 0.000 description 1
239000004058 oil shale Substances 0.000 description 1
239000011368 organic material Substances 0.000 description 1
239000002245 particle Substances 0.000 description 1
229920001021 polysulfide Polymers 0.000 description 1
239000005077 polysulfide Substances 0.000 description 1
150000008117 polysulfides Polymers 0.000 description 1
229910052700 potassium Inorganic materials 0.000 description 1
239000011591 potassium Substances 0.000 description 1
239000012264 purified product Substances 0.000 description 1
238000000197 pyrolysis Methods 0.000 description 1
230000036647 reaction Effects 0.000 description 1
230000035484 reaction time Effects 0.000 description 1
230000001172 regenerating effect Effects 0.000 description 1
239000011734 sodium Substances 0.000 description 1
229910052708 sodium Inorganic materials 0.000 description 1
235000019980 sodium acid phosphate Nutrition 0.000 description 1
229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
235000017557 sodium bicarbonate Nutrition 0.000 description 1
229910000029 sodium carbonate Inorganic materials 0.000 description 1
AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 1
239000001488 sodium phosphate Substances 0.000 description 1
235000011008 sodium phosphates Nutrition 0.000 description 1
230000003381 solubilizing effect Effects 0.000 description 1
239000000126 substance Substances 0.000 description 1
125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
150000004763 sulfides Chemical class 0.000 description 1
150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
230000000153 supplemental effect Effects 0.000 description 1
RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical class [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
238000010977 unit operation Methods 0.000 description 1
238000009834 vaporization Methods 0.000 description 1
230000008016 vaporization Effects 0.000 description 1
229910052725 zinc Inorganic materials 0.000 description 1
239000011701 zinc Substances 0.000 description 1

Landscapes

Treating Waste Gases (AREA)

CA000498768A 1985-12-30 1985-12-30 Separation par voie oxyde de l'hydrogene sulfure en presence dans des debits gazeux Expired CA1241182A (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
CA000498768A CA1241182A (fr)	1985-12-30	1985-12-30	Separation par voie oxyde de l'hydrogene sulfure en presence dans des debits gazeux

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA000498768A CA1241182A (fr)	1985-12-30	1985-12-30	Separation par voie oxyde de l'hydrogene sulfure en presence dans des debits gazeux

Publications (1)

Publication Number	Publication Date
CA1241182A true CA1241182A (fr)	1988-08-30

Family

ID=4132204

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA000498768A Expired CA1241182A (fr)	1985-12-30	1985-12-30	Separation par voie oxyde de l'hydrogene sulfure en presence dans des debits gazeux

Country Status (1)

Country	Link
CA (1)	CA1241182A (fr)

1985
- 1985-12-30 CA CA000498768A patent/CA1241182A/fr not_active Expired

Legal Events

Date	Code	Title	Description
2005-12-30	MKEX	Expiry

Publication	Publication Date	Title
RU2241527C2 (ru)	2004-12-10	Способ десульфуризации газов
US5223173A (en)	1993-06-29	Method and composition for the removal of hydrogen sulfide from gaseous streams
US4579727A (en)	1986-04-01	Oxidative removal of hydrogen sulfide from gas streams
US4774071A (en)	1988-09-27	Process and composition for the removal of hydrogen sulfide from gaseous streams
EP0279667A2 (fr)	1988-08-24	Procédé pour la séparation d'acide sulfhydrique et éventuellement de dioxyde de carbone de courants gazeux
US6534030B2 (en)	2003-03-18	Process for producing ammonium thiosulfate
US4124685A (en)	1978-11-07	Method for substantially complete removal of hydrogen sulfide from sulfur bearing industrial gases
US6569398B2 (en)	2003-05-27	Method for treating hydrogen sulfide-containing waste gases
AU2007253790B2 (en)	2011-10-13	Process for treating a gas stream
US4125597A (en)	1978-11-14	Method of removing hydrogen sulfide from gas
KR940005061B1 (ko)	1994-06-10	부식성 기류로부터 h₂s를 제거하는 방법 및 이를 위한 반응물 용액
WO2018190886A1 (fr)	2018-10-18	Systèmes et procédés d'élimination de sulfure d'hydrogène à partir de flux gazeux
US6096239A (en)	2000-08-01	Method for removal of sulfur dioxide
US20030072707A1 (en)	2003-04-17	Process for aqueous phase oxidation of sulfur or sulfide to thiosulfate, bisulfite or sulfite ions using air
IT8922189A1 (it)	1991-04-30	Rimozione di acido solfidrico da correnti di fluidi con produzione minima di sostanze solide
US4634582A (en)	1987-01-06	Sulfur dioxide removal process
US4781901A (en)	1988-11-01	Method and composition for the removal of hydrogen sulfide and carbon dioxide from gaseous streams
US4871468A (en)	1989-10-03	Method and composition for the removal of hydrogen sulfide and carbon dioxide from gaseous streams
US4816238A (en)	1989-03-28	Method and composition for the removal of hydrogen sulfide from gaseous streams
CA1219731A (fr)	1987-03-31	Desulfuration des gaz combustibles
US6083472A (en)	2000-07-04	Method for continuously producing thiosulfate ions
JP4391140B2 (ja)	2009-12-24	チオ硫酸アンモニウムの製造方法
US5167940A (en)	1992-12-01	Process and apparatus for removal of H2 S from a process gas including polyvalent metal removal and decomposition of salts and complexes
JPH06293888A (ja)	1994-10-21	石炭ガス化プラントの硫黄回収方法及び装置
US4163776A (en)	1979-08-07	Process for stack gas desulfurization