CA1079031A - Wet-cleaning gases containing sulfur dioxide, halogens and arsenic - Google Patents
Wet-cleaning gases containing sulfur dioxide, halogens and arsenicInfo
- Publication number
- CA1079031A CA1079031A CA275,235A CA275235A CA1079031A CA 1079031 A CA1079031 A CA 1079031A CA 275235 A CA275235 A CA 275235A CA 1079031 A CA1079031 A CA 1079031A
- Authority
- CA
- Canada
- Prior art keywords
- sulfuric acid
- arsenic
- washing
- gases
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000007789 gas Substances 0.000 title claims abstract description 87
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 33
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000004140 cleaning Methods 0.000 title claims abstract description 28
- 229910052736 halogen Inorganic materials 0.000 title claims abstract description 27
- 150000002367 halogens Chemical class 0.000 title claims abstract description 24
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 122
- 238000000034 method Methods 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000011282 treatment Methods 0.000 claims abstract description 10
- 238000001556 precipitation Methods 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 238000009833 condensation Methods 0.000 claims abstract description 3
- 230000005494 condensation Effects 0.000 claims abstract description 3
- 238000005406 washing Methods 0.000 claims description 74
- 229940032330 sulfuric acid Drugs 0.000 claims description 58
- 239000007788 liquid Substances 0.000 claims description 30
- 239000002253 acid Substances 0.000 claims description 29
- GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 claims description 24
- 239000007787 solid Substances 0.000 claims description 19
- 229910052753 mercury Inorganic materials 0.000 claims description 16
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 16
- 239000000126 substance Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 11
- 150000001495 arsenic compounds Chemical class 0.000 claims description 7
- 229940093920 gynecological arsenic compound Drugs 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 6
- -1 halogen ions Chemical class 0.000 claims description 5
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 4
- 230000001376 precipitating effect Effects 0.000 claims description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 claims description 2
- 150000002505 iron Chemical class 0.000 claims description 2
- 239000008213 purified water Substances 0.000 claims description 2
- HJTAZXHBEBIQQX-UHFFFAOYSA-N 1,5-bis(chloromethyl)naphthalene Chemical compound C1=CC=C2C(CCl)=CC=CC2=C1CCl HJTAZXHBEBIQQX-UHFFFAOYSA-N 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 37
- IKWTVSLWAPBBKU-UHFFFAOYSA-N a1010_sial Chemical compound O=[As]O[As]=O IKWTVSLWAPBBKU-UHFFFAOYSA-N 0.000 description 23
- 229960002594 arsenic trioxide Drugs 0.000 description 23
- 239000012535 impurity Substances 0.000 description 20
- 229910000358 iron sulfate Inorganic materials 0.000 description 12
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 8
- 239000010802 sludge Substances 0.000 description 8
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 7
- 239000011707 mineral Substances 0.000 description 7
- 235000010755 mineral Nutrition 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 229910052683 pyrite Inorganic materials 0.000 description 7
- 239000011028 pyrite Substances 0.000 description 7
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 235000013980 iron oxide Nutrition 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 239000012065 filter cake Substances 0.000 description 4
- 230000009931 harmful effect Effects 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 3
- 229910052711 selenium Inorganic materials 0.000 description 3
- 239000011669 selenium Substances 0.000 description 3
- 239000011343 solid material Substances 0.000 description 3
- 150000004763 sulfides Chemical class 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 241000446313 Lamella Species 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 230000003113 alkalizing effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 150000002222 fluorine compounds Chemical class 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000003381 solubilizing effect Effects 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052964 arsenopyrite Inorganic materials 0.000 description 1
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052947 chalcocite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 229910052960 marcasite Inorganic materials 0.000 description 1
- 150000002731 mercury compounds Chemical class 0.000 description 1
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052954 pentlandite Inorganic materials 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 229910052952 pyrrhotite Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229940065287 selenium compound Drugs 0.000 description 1
- 150000003343 selenium compounds Chemical class 0.000 description 1
- 150000003346 selenoethers Chemical class 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- B01D53/68—Halogens or halogen compounds
-
- 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
-
- 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
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)
- Removal Of Specific Substances (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7604219A SE403277B (sv) | 1976-04-09 | 1976-04-09 | Forfarande vid vatrening av gaser innehallande svaveldioxid, halogener och minst ett forflyktigat emne ur gruppen omfattande arsenik och arsenikforeningar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1079031A true CA1079031A (en) | 1980-06-10 |
Family
ID=20327556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA275,235A Expired CA1079031A (en) | 1976-04-09 | 1977-03-31 | Wet-cleaning gases containing sulfur dioxide, halogens and arsenic |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4138231A (OSRAM) |
| BR (1) | BR7702231A (OSRAM) |
| CA (1) | CA1079031A (OSRAM) |
| DE (1) | DE2714343C2 (OSRAM) |
| ES (1) | ES457611A1 (OSRAM) |
| FR (1) | FR2347084A1 (OSRAM) |
| GR (1) | GR62661B (OSRAM) |
| IT (1) | IT1074818B (OSRAM) |
| PH (1) | PH12057A (OSRAM) |
| PT (1) | PT66375B (OSRAM) |
| SE (1) | SE403277B (OSRAM) |
| TR (1) | TR19656A (OSRAM) |
| YU (2) | YU43743B (OSRAM) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI66124C (fi) * | 1979-06-15 | 1984-09-10 | Tapio Ritvanen | Foerfarande och anordning foer behandling av gasformiga foerbraenningsprodukter |
| SE432361B (sv) * | 1981-05-08 | 1984-04-02 | Boliden Ab | Forfarande for avskiljning av gasformigt elementert kvicksilver ur en gas |
| SE452307B (sv) * | 1983-09-12 | 1987-11-23 | Boliden Ab | Forfarande for rening av fororenade vattenlosningar innehallande arsenik och/eller fosfor |
| JPH0693974B2 (ja) * | 1987-03-30 | 1994-11-24 | 三菱重工業株式会社 | 燃焼排ガス処理方法 |
| AT389238B (de) * | 1987-08-18 | 1989-11-10 | Simmering Graz Pauker Ag | Verfahren zur behandlung der rauchgase und verbrennungsrueckstaende einer verbrennungsanlage, insbesondere abfallverbrennungsanlage |
| US5114699A (en) * | 1989-04-12 | 1992-05-19 | Freeport-Mcmoran Resource Partners | Spent alkylation acid treatment process |
| CA2031229C (en) * | 1990-11-30 | 2000-08-08 | Lynda G. Sturgeoff | Fluoride removal from sulphuric acid |
| CN1053596C (zh) * | 1996-04-11 | 2000-06-21 | 中国科学院半导体研究所 | 处理含砷及砷化合物的废气的方法 |
| NL1005342C2 (nl) * | 1997-02-21 | 1998-08-31 | Gibros Pec Bv | Werkwijze voor het reinigen van met stof beladen gas. |
| EP1157139B1 (en) * | 1999-02-26 | 2002-10-09 | Mintek | Treatment of metal sulphide concentrates by roasting and arc furnace smelt reduction |
| FI117617B (fi) * | 2000-12-08 | 2006-12-29 | Outokumpu Oy | Menetelmä elohopean poistamiseksi kaasusta |
| AU2002222360A1 (en) * | 2000-12-14 | 2002-06-24 | Barrick Gold Corporation | Process for recovering arsenic from acidic aqueous solution |
| FI109364B (fi) * | 2000-12-20 | 2002-07-15 | Outokumpu Oy | Menetelmä pesuhapon väkevöimiseksi |
| DE10107761B4 (de) * | 2001-02-16 | 2007-08-30 | Fisia Babcock Environment Gmbh | Verfahren zur Entfernung von Quecksilber aus Rauchgasen |
| JP4072323B2 (ja) * | 2001-04-27 | 2008-04-09 | シャープ株式会社 | ガリウム砒素含有排水の処理方法およびガリウム砒素含有排水の処理装置 |
| US7655200B2 (en) * | 2006-02-14 | 2010-02-02 | Wen-Hao Lin | Method for purifying exhaust of waste gas using atomized fluid droplets combined with turbulent flow |
| FI125347B (en) | 2013-11-21 | 2015-09-15 | Outotec Finland Oy | A method for treating a lead anode slurry |
| CN104803416B (zh) * | 2015-04-08 | 2017-06-20 | 北京矿冶研究总院 | 一种含砷烟气的收砷方法 |
| CN112370951A (zh) * | 2020-09-10 | 2021-02-19 | 矿冶科技集团有限公司 | 冶炼烟气湿法脱砷的方法和系统 |
| CN113230831A (zh) * | 2021-05-11 | 2021-08-10 | 云南皓普工程技术有限公司 | 一种有色冶炼烟气绝热蒸发冷却酸洗涤除砷净化系统以及方法 |
| CN113830828A (zh) * | 2021-10-14 | 2021-12-24 | 广东先导稀材股份有限公司 | 一种高纯三氯化砷的制备方法 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2028318A (en) * | 1931-02-03 | 1936-01-21 | Gen Chemical Corp | Purification of gases |
| FR893330A (fr) * | 1942-03-21 | 1944-06-06 | Metallgesellschaft Ag | Procédé pour éliminer par lavage le fluor, le chlore et autres poisons de catalyseur présents dans des gaz de grillage destinés à être désarséniés électriquement |
| US2416011A (en) * | 1944-01-03 | 1947-02-18 | Phillips Petroleum Co | Recovery of sulphur dioxide-free hydrochloric acid from aluminum chloride sludge |
| GB742052A (en) * | 1951-04-05 | 1955-12-21 | Alfons Zieren | Improvements relating to the washing and cooling of gases containing sulphur dioxide |
| GB744465A (en) * | 1951-04-23 | 1956-02-08 | Zieren Chemiebau Gmbh Dr A | Improvements relating to the washing and cooling of gases containing sulphur dioxide |
| BE541397A (OSRAM) * | 1954-09-19 | |||
| SE334598B (OSRAM) * | 1969-09-01 | 1971-05-03 | Boliden Ab | |
| FI45767C (fi) * | 1970-07-03 | 1972-09-11 | Outokumpu Oy | Menetelmä elohopean ja/tai seleenin poistamiseksi ja talteenottamiseks i elohopea- ja/tai seleenipitoisista kaasuista. |
| SE373114B (OSRAM) * | 1973-05-02 | 1975-01-27 | Boliden Ab |
-
1976
- 1976-04-09 SE SE7604219A patent/SE403277B/xx not_active IP Right Cessation
-
1977
- 1977-02-04 YU YU292/77A patent/YU43743B/xx unknown
- 1977-03-29 GR GR53113A patent/GR62661B/el unknown
- 1977-03-30 US US05/782,908 patent/US4138231A/en not_active Expired - Lifetime
- 1977-03-31 DE DE2714343A patent/DE2714343C2/de not_active Expired
- 1977-03-31 CA CA275,235A patent/CA1079031A/en not_active Expired
- 1977-03-31 PT PT66375A patent/PT66375B/pt unknown
- 1977-04-04 PH PH19625A patent/PH12057A/en unknown
- 1977-04-06 BR BR7702231A patent/BR7702231A/pt unknown
- 1977-04-06 ES ES457611A patent/ES457611A1/es not_active Expired
- 1977-04-07 TR TR19656A patent/TR19656A/xx unknown
- 1977-04-07 IT IT22195/77A patent/IT1074818B/it active
- 1977-04-08 YU YU929/77A patent/YU40475B/xx unknown
- 1977-04-08 FR FR7710781A patent/FR2347084A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| YU43743B (en) | 1989-12-31 |
| US4138231A (en) | 1979-02-06 |
| DE2714343C2 (de) | 1983-10-13 |
| PT66375A (en) | 1977-04-01 |
| GR62661B (en) | 1979-05-17 |
| SE403277B (sv) | 1978-08-07 |
| ES457611A1 (es) | 1978-01-16 |
| PT66375B (en) | 1978-08-25 |
| SE7604219L (sv) | 1977-10-10 |
| FR2347084B1 (OSRAM) | 1982-04-16 |
| IT1074818B (it) | 1985-04-20 |
| TR19656A (tr) | 1979-09-17 |
| YU29277A (en) | 1982-05-31 |
| FR2347084A1 (fr) | 1977-11-04 |
| YU40475B (en) | 1986-02-28 |
| BR7702231A (pt) | 1977-12-06 |
| PH12057A (en) | 1978-10-18 |
| DE2714343A1 (de) | 1977-10-20 |
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