SE427195B - Anordning for atervinning av kemikalier fran rokgaser och gronlut herstammande fran forbrenning av avlut vid cellulosafabriker - Google Patents
Anordning for atervinning av kemikalier fran rokgaser och gronlut herstammande fran forbrenning av avlut vid cellulosafabrikerInfo
- Publication number
- SE427195B SE427195B SE7809180A SE7809180A SE427195B SE 427195 B SE427195 B SE 427195B SE 7809180 A SE7809180 A SE 7809180A SE 7809180 A SE7809180 A SE 7809180A SE 427195 B SE427195 B SE 427195B
- Authority
- SE
- Sweden
- Prior art keywords
- sodium
- reactor
- tower
- washing
- flue gases
- Prior art date
Links
- 238000011084 recovery Methods 0.000 title claims description 8
- 238000002485 combustion reaction Methods 0.000 title claims description 4
- 239000000126 substance Substances 0.000 title claims description 3
- 239000002699 waste material Substances 0.000 title 1
- 239000003546 flue gas Substances 0.000 claims description 32
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 26
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 24
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 16
- 239000011734 sodium Substances 0.000 claims description 14
- 238000005406 washing Methods 0.000 claims description 14
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 13
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 13
- 235000017550 sodium carbonate Nutrition 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 12
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 11
- 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 11
- 229910052708 sodium Inorganic materials 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000009656 pre-carbonization Methods 0.000 claims description 10
- 238000003763 carbonization Methods 0.000 claims description 9
- IHYNKGRWCDKNEG-UHFFFAOYSA-N n-(4-bromophenyl)-2,6-dihydroxybenzamide Chemical compound OC1=CC=CC(O)=C1C(=O)NC1=CC=C(Br)C=C1 IHYNKGRWCDKNEG-UHFFFAOYSA-N 0.000 claims description 9
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 6
- 235000010265 sodium sulphite Nutrition 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 3
- 239000001913 cellulose Substances 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 239000003125 aqueous solvent Substances 0.000 claims 1
- 238000007664 blowing Methods 0.000 claims 1
- MOOAHMCRPCTRLV-UHFFFAOYSA-N boron sodium Chemical compound [B].[Na] MOOAHMCRPCTRLV-UHFFFAOYSA-N 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 claims 1
- 239000000498 cooling water Substances 0.000 claims 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 14
- 239000000243 solution Substances 0.000 description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 239000001569 carbon dioxide Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 101100348017 Drosophila melanogaster Nazo gene Proteins 0.000 description 1
- 239000004133 Sodium thiosulphate Substances 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- NIRCDTRHFKQIJU-UHFFFAOYSA-J [B+3].C([O-])([O-])=O.[Na+].C([O-])([O-])=O Chemical compound [B+3].C([O-])([O-])=O.[Na+].C([O-])([O-])=O NIRCDTRHFKQIJU-UHFFFAOYSA-J 0.000 description 1
- BPMYIGSUGLGADT-UHFFFAOYSA-M [O-]C(C(O)=O)=O.[Na+].S Chemical compound [O-]C(C(O)=O)=O.[Na+].S BPMYIGSUGLGADT-UHFFFAOYSA-M 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- GURHHFWPTWRLOB-UHFFFAOYSA-N boric acid;urea Chemical compound NC(N)=O.OB(O)O GURHHFWPTWRLOB-UHFFFAOYSA-N 0.000 description 1
- 230000021523 carboxylation Effects 0.000 description 1
- 238000006473 carboxylation reaction Methods 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- HDFXRQJQZBPDLF-UHFFFAOYSA-L disodium hydrogen carbonate Chemical compound [Na+].[Na+].OC([O-])=O.OC([O-])=O HDFXRQJQZBPDLF-UHFFFAOYSA-L 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-M hydrosulfide Chemical compound [SH-] RWSOTUBLDIXVET-UHFFFAOYSA-M 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- XONPDZSGENTBNJ-UHFFFAOYSA-N molecular hydrogen;sodium Chemical compound [Na].[H][H] XONPDZSGENTBNJ-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- POECFFCNUXZPJT-UHFFFAOYSA-M sodium;carbonic acid;hydrogen carbonate Chemical compound [Na+].OC(O)=O.OC([O-])=O POECFFCNUXZPJT-UHFFFAOYSA-M 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C11/00—Regeneration of pulp liquors or effluent waste waters
- D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
- D21C11/063—Treatment of gas streams comprising solid matter, e.g. the ashes resulting from the combustion of black liquor
-
- 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
-
- 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
- B01D53/62—Carbon oxides
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S423/00—Chemistry of inorganic compounds
- Y10S423/03—Papermaking liquor
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)
- Paper (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI772626A FI54946C (fi) | 1977-09-05 | 1977-09-05 | Saett och anordning foer aotervinning av natriumkemikalier fraon groenlut samt roekgaser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7809180L SE7809180L (sv) | 1979-03-06 |
| SE427195B true SE427195B (sv) | 1983-03-14 |
Family
ID=8511046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7809180A SE427195B (sv) | 1977-09-05 | 1978-08-31 | Anordning for atervinning av kemikalier fran rokgaser och gronlut herstammande fran forbrenning av avlut vid cellulosafabriker |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4187279A (cs) |
| JP (1) | JPS5459403A (cs) |
| CA (1) | CA1107009A (cs) |
| CS (1) | CS209904B2 (cs) |
| DE (1) | DE2838187C2 (cs) |
| FI (1) | FI54946C (cs) |
| FR (1) | FR2402031A1 (cs) |
| NO (1) | NO150089C (cs) |
| SE (1) | SE427195B (cs) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI65454C (fi) * | 1981-09-08 | 1984-05-10 | Tampella Oy Ab | Saett att aotervinna natriumkemikalier fraon groenlut samt roekgaser |
| DE3204907C2 (de) * | 1982-02-12 | 1987-01-29 | Dr. C. Otto & Co Gmbh, 4630 Bochum | Verfahren zum Entfernen von Schwefelwasserstoff aus Gasen, insbesondere Kohlendestillationsgasen |
| FI67732C (fi) * | 1982-10-20 | 1985-05-10 | Tampella Oy Ab | Saett att aotervinna kemikalier fraon kloridhaltig groenlut |
| JPS6342910A (ja) * | 1986-08-07 | 1988-02-24 | Toho Rayon Co Ltd | 炭素繊維製造用アクリロニトリル系繊維束の製造法 |
| US5096540A (en) * | 1990-04-06 | 1992-03-17 | Sell Nancy J | Method for recycling sulfur dioxide from sulfite pulping liquors |
| TW245651B (en) * | 1994-02-24 | 1995-04-21 | Babcock & Wilcox Co | Black liquor gasifier |
| AU5568099A (en) * | 1998-08-18 | 2000-03-14 | United States Department Of Energy | Method and apparatus for extracting and sequestering carbon dioxide |
| US8545782B1 (en) * | 2012-10-16 | 2013-10-01 | Mitsubishi Heavy Industries, Ltd. | CO2 recovery apparatus and CO2 recovery method |
| CN115363045B (zh) * | 2022-04-15 | 2024-07-19 | 福建省烟草公司三明市公司 | 一种预防植物叶片日灼的保护剂及其制备方法及其应用 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2841561A (en) * | 1954-03-12 | 1958-07-01 | Rayonier Inc | Recovery of chemicals from smelt solutions |
| DE1061613B (de) * | 1955-07-14 | 1959-07-16 | Stora Kopparbergs Bergslags Ab | Verfahren zum Regenerieren von Alkalisulfit- oder Alkalibisulfitzellstoffablaugen |
| US2993753A (en) * | 1957-01-08 | 1961-07-25 | Jr Theron T Collins | Sodium sulphite liquor recovery |
| US3331733A (en) * | 1962-12-17 | 1967-07-18 | Mo Och Domsjoe Ab | Method of preparing polysulfide-containing cooking liquor |
| FR1481806A (fr) * | 1965-06-02 | 1967-05-19 | Mo Och Domsjoe Ab | Procédé et appareil pour la production d'eau chaude épurée par récupération de la chaleur des gaz de combustion émis dans le traitement de la cellulose par le procédé au sulfite ou le procédé au sulfate |
| DE1692878C3 (de) * | 1966-05-25 | 1974-04-04 | Oy Tampella Ab, Heinola (Finnland) | Verfahren/um Auskristallisieren von Alkali als Karbonat aus der bei der Zellstoffablaugen-Aufarbeitung anfallenden Schmelz lösung |
| US3627464A (en) * | 1967-11-09 | 1971-12-14 | Wellman Lord Inc | Process for recovering so2 from waste gases |
| DE2003268C3 (de) * | 1970-01-26 | 1974-01-31 | Deutsche Gold- Und Silber-Scheideanstalt Vormals Roessler, 6000 Frankfurt | Vorrichtung zur Durchführung der Oxydation im Anthrachinonverfahren zur Herstellung von Wasserstoffperoxid |
| US3849536A (en) * | 1970-08-31 | 1974-11-19 | Ass Pulp & Paper Mills | Wet combustion of waste liquors |
| CA1003323A (en) * | 1971-12-09 | 1977-01-11 | Masahiro Tsujikawa | Air purifying apparatus having means for removal of nitrogen oxides |
| US3826710A (en) * | 1972-04-21 | 1974-07-30 | Owens Illinois Inc | Carbonation system for recovery of sodium base pulping liquor |
| US4083930A (en) * | 1976-04-02 | 1978-04-11 | Rockwell International Corporation | Method of treating alkali metal sulfide and carbonate mixtures |
-
1977
- 1977-09-05 FI FI772626A patent/FI54946C/fi not_active IP Right Cessation
-
1978
- 1978-08-30 NO NO782962A patent/NO150089C/no unknown
- 1978-08-31 SE SE7809180A patent/SE427195B/sv not_active IP Right Cessation
- 1978-09-01 CA CA310,555A patent/CA1107009A/en not_active Expired
- 1978-09-01 DE DE2838187A patent/DE2838187C2/de not_active Expired
- 1978-09-01 US US05/938,944 patent/US4187279A/en not_active Expired - Lifetime
- 1978-09-04 FR FR7825380A patent/FR2402031A1/fr active Granted
- 1978-09-04 CS CS785728A patent/CS209904B2/cs unknown
- 1978-09-05 JP JP10818878A patent/JPS5459403A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FI54946C (fi) | 1979-04-10 |
| FR2402031A1 (fr) | 1979-03-30 |
| FR2402031B1 (cs) | 1983-01-21 |
| US4187279A (en) | 1980-02-05 |
| NO782962L (no) | 1979-03-06 |
| DE2838187A1 (de) | 1979-03-15 |
| NO150089B (no) | 1984-05-07 |
| CS209904B2 (en) | 1981-12-31 |
| FI54946B (fi) | 1978-12-29 |
| JPS5742754B2 (cs) | 1982-09-10 |
| JPS5459403A (en) | 1979-05-14 |
| DE2838187C2 (de) | 1982-05-27 |
| CA1107009A (en) | 1981-08-18 |
| NO150089C (no) | 1984-08-15 |
| SE7809180L (sv) | 1979-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| SE462398B (sv) | Foerfarande foer behandling av avluten fraan en cellulosakokprocess i en ugn i syfte att aatervinna kokkemikalier ur avluten | |
| SE448007B (sv) | Forfarande och anordning for atervinning av kemikalier ur massaavlut | |
| SE427195B (sv) | Anordning for atervinning av kemikalier fran rokgaser och gronlut herstammande fran forbrenning av avlut vid cellulosafabriker | |
| BR112015001412B1 (pt) | métodos para remoção de polpa a partir de madeira e recuperação de produto químico de formação de polpa a partir de licor negro, e para a recuperação de produtos químicos de formação de polpa de madeira a partir de licor negro | |
| BR122022000451B1 (pt) | Processo para preparação de sulfito de potássio, bissulfito de potássio ou uma mistura dos mesmos e produto de potássio líquido | |
| SE461534B (sv) | Foerfarande foer framstaellning av kokvaetska samt kokvaetska foer kraftmassakokning | |
| FI62002B (fi) | Foerfarande och anordning foer separering av kvicksilver ur svveldioxidhaltiga heta och fuktiga gaser | |
| CA1107036A (en) | Method of removing sulphur dioxide from gases, more particularly industrial waste gases | |
| US2993753A (en) | Sodium sulphite liquor recovery | |
| CS204962B2 (cs) | Způsob regenerace chemikálií z odpadních louhů při výrobě buničiny | |
| US3650889A (en) | Pollution controlled polysulfide recovery process | |
| FI92726C (fi) | Menetelmä ja laite rikkidioksidin talteenottamiseksi sulfaattiselluloosatehtaan kemikaalikierrosta | |
| FI67244B (fi) | Foerfarande foer utstoetning av klorider | |
| BR112020009792B1 (pt) | Método para ajustar o equilíbrio de s/na de uma fábrica de celulose de sulfato, sistema arranjado para ajustar o equilíbrio de s/na de uma fábrica de celulose de sulfato, e, uso de um biorreator | |
| JPS61252387A (ja) | パルプの蒸煮及び漂白方法 | |
| SE506702C2 (sv) | Förbehandling av fibermaterial med in situ bildad vätesulfid | |
| SE442523B (sv) | Forfarande for att forhindra utslepp av svavelinnehallande gaser vid framstellning av kemisk cellulosamassa | |
| FI67732B (fi) | Saett att aotervinna kemikalier fraon kloridhaltig groenlut | |
| US3098710A (en) | Alkali and sulfite recovery | |
| JP4391140B2 (ja) | チオ硫酸アンモニウムの製造方法 | |
| FI65454C (fi) | Saett att aotervinna natriumkemikalier fraon groenlut samt roekgaser | |
| US4049787A (en) | Process for separating sulphur in the form of hydrogen sulphide from clarified green liquor obtained from the combustion of waste liquor | |
| US3005686A (en) | Sodium sulfite recovery process | |
| US2872289A (en) | Process in recovering sulphur from waste sulphite lye | |
| SE407700B (sv) | Forfarande vid atervinning av kokkemikalier pa magnesiumbas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAL | Patent in force |
Ref document number: 7809180-8 Format of ref document f/p: F |
|
| NUG | Patent has lapsed |
Ref document number: 7809180-8 Format of ref document f/p: F |