FR2513140A1 - Procede pour l'elimination des oxydes de soufre des fumees - Google Patents
Procede pour l'elimination des oxydes de soufre des fumees Download PDFInfo
- Publication number
- FR2513140A1 FR2513140A1 FR8215715A FR8215715A FR2513140A1 FR 2513140 A1 FR2513140 A1 FR 2513140A1 FR 8215715 A FR8215715 A FR 8215715A FR 8215715 A FR8215715 A FR 8215715A FR 2513140 A1 FR2513140 A1 FR 2513140A1
- Authority
- FR
- France
- Prior art keywords
- sodium
- liquor
- stage
- sorbent
- trona
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000003517 fume Substances 0.000 title claims abstract description 7
- 229910052815 sulfur oxide Inorganic materials 0.000 title abstract description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 29
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 32
- 239000002594 sorbent Substances 0.000 claims description 25
- 239000007787 solid Substances 0.000 claims description 23
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 16
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 16
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 16
- -1 borate ions Chemical class 0.000 claims description 14
- 241001625808 Trona Species 0.000 claims description 12
- 229910021529 ammonia Inorganic materials 0.000 claims description 12
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 12
- 239000004327 boric acid Substances 0.000 claims description 12
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 10
- 239000011734 sodium Substances 0.000 claims description 10
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 8
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 7
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 7
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 6
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 6
- 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 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims description 5
- 150000003467 sulfuric acid derivatives Chemical class 0.000 claims description 4
- 229910021538 borax Inorganic materials 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 3
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims description 2
- 150000004679 hydroxides Chemical class 0.000 claims description 2
- 150000003388 sodium compounds Chemical class 0.000 claims description 2
- 239000004328 sodium tetraborate Substances 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims 4
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 claims 3
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims 1
- 239000000292 calcium oxide Substances 0.000 claims 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- HDFXRQJQZBPDLF-UHFFFAOYSA-L disodium hydrogen carbonate Chemical compound [Na+].[Na+].OC([O-])=O.OC([O-])=O HDFXRQJQZBPDLF-UHFFFAOYSA-L 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 235000010265 sodium sulphite Nutrition 0.000 claims 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 abstract description 12
- 229910000029 sodium carbonate Inorganic materials 0.000 abstract description 5
- 230000008030 elimination Effects 0.000 abstract description 3
- 238000003379 elimination reaction Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 abstract description 3
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 18
- 238000005194 fractionation Methods 0.000 description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 8
- 235000011941 Tilia x europaea Nutrition 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
- 239000004571 lime Substances 0.000 description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 239000003546 flue gas Substances 0.000 description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 238000001354 calcination Methods 0.000 description 4
- 239000010881 fly ash Substances 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical class OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 3
- 235000011132 calcium sulphate Nutrition 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 150000003385 sodium Chemical class 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229940063013 borate ion Drugs 0.000 description 2
- 235000010216 calcium carbonate Nutrition 0.000 description 2
- 235000010261 calcium sulphite Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- FQNGWRSKYZLJDK-UHFFFAOYSA-N [Ca].[Ba] Chemical compound [Ca].[Ba] FQNGWRSKYZLJDK-UHFFFAOYSA-N 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 229910052936 alkali metal sulfate Inorganic materials 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 239000004295 calcium sulphite Substances 0.000 description 1
- 244000309466 calf Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30336081A | 1981-09-18 | 1981-09-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2513140A1 true FR2513140A1 (fr) | 1983-03-25 |
| FR2513140B1 FR2513140B1 (enExample) | 1985-03-15 |
Family
ID=23171738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8215715A Granted FR2513140A1 (fr) | 1981-09-18 | 1982-09-17 | Procede pour l'elimination des oxydes de soufre des fumees |
Country Status (6)
| Country | Link |
|---|---|
| AU (1) | AU546792B2 (enExample) |
| CA (1) | CA1171242A (enExample) |
| DE (1) | DE3233200C2 (enExample) |
| FR (1) | FR2513140A1 (enExample) |
| GB (1) | GB2106488B (enExample) |
| ZA (1) | ZA826570B (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR201105519T1 (tr) * | 2008-12-22 | 2011-09-21 | Solvay (Societe Anonyme) | Sodyum karbonat ve sodyum bikarbonatın birlikte üretimi için işlem. |
| EP2399866A1 (en) * | 2010-06-22 | 2011-12-28 | Solvay SA | Process for the joint production of sodium carbonate and sodium bicarbonate |
| CN101862589A (zh) * | 2010-06-30 | 2010-10-20 | 马鞍山钢铁股份有限公司 | 烧结烟气的脱硫工艺 |
| US9868644B2 (en) | 2011-12-23 | 2018-01-16 | Solvay Sa | Process for the joint production of sodium carbonate and sodium bicarbonate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3846535A (en) * | 1972-09-05 | 1974-11-05 | Continental Oil Co | Method for absorbing sulfur oxides from gaseous mixtures and regenerating the absorbent |
| US3852410A (en) * | 1972-12-07 | 1974-12-03 | American Air Filter Co | Sulfur dioxide and particulate contaminant removal from industrial stack gases |
| DE2459272A1 (de) * | 1974-12-14 | 1976-06-16 | Wegener Hermann Fa | Masse zur entfernung von umweltschaedlichen gasen, insbesondere von schwefeloxiden, schwefelwasserstoff und halogenwasserstoffen aus industrieabgasen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3823676A (en) * | 1972-10-10 | 1974-07-16 | Warren Cook Chem Inc | Method of reducing sulphur dioxide emissions from coal |
-
1982
- 1982-08-27 AU AU87801/82A patent/AU546792B2/en not_active Ceased
- 1982-09-07 DE DE3233200A patent/DE3233200C2/de not_active Expired
- 1982-09-08 ZA ZA826570A patent/ZA826570B/xx unknown
- 1982-09-15 GB GB08226294A patent/GB2106488B/en not_active Expired
- 1982-09-17 CA CA000411700A patent/CA1171242A/en not_active Expired
- 1982-09-17 FR FR8215715A patent/FR2513140A1/fr active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3846535A (en) * | 1972-09-05 | 1974-11-05 | Continental Oil Co | Method for absorbing sulfur oxides from gaseous mixtures and regenerating the absorbent |
| US3852410A (en) * | 1972-12-07 | 1974-12-03 | American Air Filter Co | Sulfur dioxide and particulate contaminant removal from industrial stack gases |
| DE2459272A1 (de) * | 1974-12-14 | 1976-06-16 | Wegener Hermann Fa | Masse zur entfernung von umweltschaedlichen gasen, insbesondere von schwefeloxiden, schwefelwasserstoff und halogenwasserstoffen aus industrieabgasen |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA826570B (en) | 1983-07-27 |
| AU546792B2 (en) | 1985-09-19 |
| AU8780182A (en) | 1983-03-24 |
| FR2513140B1 (enExample) | 1985-03-15 |
| DE3233200C2 (de) | 1986-07-31 |
| GB2106488B (en) | 1984-08-22 |
| DE3233200A1 (de) | 1983-04-14 |
| GB2106488A (en) | 1983-04-13 |
| CA1171242A (en) | 1984-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4385039A (en) | Process for removal of sulfur oxides from waste gases | |
| EP0366182B1 (fr) | Procédé pour éliminer un résidu comprenant du sulfate de sodium | |
| CA1106348A (fr) | Procede de regeneration de solutions aqueuses de sulfures de sodium, de potassium et/ou d'ammonium | |
| WO1997016376A1 (fr) | Procede de traitement de fumees a base d'oxydes de soufre | |
| US4133650A (en) | Removing sulfur dioxide from exhaust air | |
| US3701824A (en) | Method of removing odoriferous sulphur compounds from vapours or gas streams | |
| US3944649A (en) | Multistage process for removing sulfur dioxide from stack gases | |
| US3959452A (en) | Process for removing hydrogen sulfide from contaminated gas | |
| NO148910B (no) | Fremgangsmaate ved rensing av gasser inneholdende gassformig kvikksoelv og gassformig hydrogenklorid | |
| CN212315566U (zh) | 硫酸钠回收设备 | |
| US4472364A (en) | Process for removal of sulfur oxides from hot gases | |
| JPH08506993A (ja) | 硫化水素の吸収方法および装置 | |
| FR2513140A1 (fr) | Procede pour l'elimination des oxydes de soufre des fumees | |
| EP0002880B1 (en) | Regeneration of an absorbent liquid | |
| JPH0331488B2 (enExample) | ||
| AU696509B2 (en) | Process for removing SO2 from gases which contain it, with direct production of elemental sulfur | |
| CA1142327A (en) | Recovery of salts of anthraquinone disulfonic acid in the stretford process | |
| FR2513141A1 (fr) | Procede pour l'elimination des oxydes de soufre des fumees | |
| US4206187A (en) | Process for removing sulfur dioxide from gas | |
| EP1659097A1 (fr) | Composition comprenant au moins du bicarbonate de sodium, son procédé d'obtention et ses utilisations | |
| US3298781A (en) | Production of sulfites from red mud | |
| US5266287A (en) | Regenerable flue gas desulfurization system | |
| CS253729B2 (en) | Processing of gases containing sulphur dioxide or sulphur dioxide and hydrogen sulphide | |
| US3690824A (en) | Desulfurization of flue gas | |
| JPH0521610B2 (enExample) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |