BR8704209A - Processo para a preparacao de um licor alcalino essencialmente livre de sulfeto a partir de uma fonte de sulfeto alcalino - Google Patents
Processo para a preparacao de um licor alcalino essencialmente livre de sulfeto a partir de uma fonte de sulfeto alcalinoInfo
- Publication number
- BR8704209A BR8704209A BR878704209A BR8704209A BR8704209A BR 8704209 A BR8704209 A BR 8704209A BR 878704209 A BR878704209 A BR 878704209A BR 8704209 A BR8704209 A BR 8704209A BR 8704209 A BR8704209 A BR 8704209A
- Authority
- BR
- Brazil
- Prior art keywords
- sulphide
- alkaline
- preparation
- essentially free
- source
- Prior art date
Links
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
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
- D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites
-
- 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
- D21C11/0085—Introduction of auxiliary substances into the regenerating system in order to improve the performance of certain steps of the latter, the presence of these substances being confined to the regeneration cycle
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D1/00—Oxides or hydroxides of sodium, potassium or alkali metals in general
- C01D1/04—Hydroxides
- C01D1/20—Preparation by reacting oxides or hydroxides with alkali metal salts
-
- 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
- D21C11/04—Regeneration of pulp liquors or effluent waste waters of alkali lye
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8603425A SE8603425D0 (sv) | 1986-08-14 | 1986-08-14 | Sett att bereda sulfidfri alkalilut |
SE8605120A SE8605120L (sv) | 1986-08-14 | 1986-11-28 | Sett att bereda sulfidfri alkalilut |
Publications (1)
Publication Number | Publication Date |
---|---|
BR8704209A true BR8704209A (pt) | 1988-04-12 |
Family
ID=26659458
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR878704209A BR8704209A (pt) | 1986-08-14 | 1987-08-13 | Processo para a preparacao de um licor alcalino essencialmente livre de sulfeto a partir de uma fonte de sulfeto alcalino |
Country Status (12)
Country | Link |
---|---|
US (1) | US4981556A (pt) |
EP (1) | EP0258196B1 (pt) |
KR (1) | KR900004685B1 (pt) |
BR (1) | BR8704209A (pt) |
CA (1) | CA1285353C (pt) |
DE (1) | DE3762636D1 (pt) |
ES (1) | ES2004803A6 (pt) |
FI (1) | FI873520A (pt) |
NO (1) | NO873400L (pt) |
NZ (1) | NZ221321A (pt) |
PT (1) | PT85532B (pt) |
SE (1) | SE8605120L (pt) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9117936D0 (en) * | 1991-08-20 | 1991-10-09 | Canada Inc | Production of sodium hydroxide |
FI96387C (fi) * | 1994-09-19 | 2001-12-03 | Kvaerner Pulping Oy | Menetelmä typen oksidien poistamiseksi sellutehtaan savukaasuista |
US5508018A (en) * | 1995-05-02 | 1996-04-16 | Exxon Research And Engineering Company | Process for the regeneration of sodium hydroxide from sodium sulfide |
US8696889B2 (en) * | 2008-10-02 | 2014-04-15 | Exxonmobil Research And Engineering Company | Desulfurization of heavy hydrocarbons and conversion of resulting hydrosulfides utilizing a transition metal oxide |
US8398848B2 (en) * | 2008-10-02 | 2013-03-19 | Exxonmobil Research And Engineering Company | Desulfurization of heavy hydrocarbons and conversion of resulting hydrosulfides utilizing copper metal |
US8968555B2 (en) * | 2008-10-02 | 2015-03-03 | Exxonmobil Research And Engineering Company | Desulfurization of heavy hydrocarbons and conversion of resulting hydrosulfides utilizing copper sulfide |
RU2674198C1 (ru) * | 2017-09-12 | 2018-12-05 | Открытое акционерное общество "Центральный научно-исследовательский институт бумаги" (ОАО "ЦНИИБ") | Способ получения целлюлозы для нитрования |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2056929A (en) * | 1933-05-13 | 1936-10-06 | Brown Co | Production of alkaline compounds, sulphuric acid, and other valuable chemicals |
US2031844A (en) * | 1933-10-26 | 1936-02-25 | Brown Co | Manufacture of caustic soda |
US2054727A (en) * | 1935-02-08 | 1936-09-15 | Lundin Harold | Process of making paper pulp |
US2164141A (en) * | 1936-06-23 | 1939-06-27 | Brown Co | Causticization of soluble sulphides |
US3909344A (en) * | 1973-12-03 | 1975-09-30 | Erco Envirotech Ltd | Removal of sodium chloride from pulp mill operations |
US3959068A (en) * | 1974-10-24 | 1976-05-25 | The Babcock & Wilcox Company | Process and apparatus for recovery of sulfur from a polysulfide pulping operation |
ZA761255B (en) * | 1975-03-11 | 1977-03-30 | Erco Envirotech Ltd | Bleachplant operation |
US4098639A (en) * | 1975-06-17 | 1978-07-04 | Mo Och Domsjo Aktiebolag | Process for reducing the requirement of fresh chemicals without increasing emissions in the pulping of cellulosic material |
DE2533794A1 (de) * | 1975-07-29 | 1977-02-17 | Metallgesellschaft Ag | Verfahren zur herstellung von natriumsulfit- und natriumkarbonat- haltigen kochlaugen |
FR2384712A1 (fr) * | 1977-03-25 | 1978-10-20 | Inst Francais Du Petrole | Procede de regeneration de solutions aqueuses de sulfures de sodium, de potassium et/ou d'ammonium |
US4409066A (en) * | 1978-03-30 | 1983-10-11 | Erco Industries Limited | Bleaching procedure using chlorine dioxide and chlorine solutions |
-
1986
- 1986-11-28 SE SE8605120A patent/SE8605120L/ not_active Application Discontinuation
-
1987
- 1987-07-31 DE DE8787850238T patent/DE3762636D1/de not_active Expired - Fee Related
- 1987-07-31 EP EP87850238A patent/EP0258196B1/en not_active Expired - Lifetime
- 1987-08-04 NZ NZ221321A patent/NZ221321A/xx unknown
- 1987-08-07 CA CA000544034A patent/CA1285353C/en not_active Expired - Fee Related
- 1987-08-13 NO NO873400A patent/NO873400L/no unknown
- 1987-08-13 BR BR878704209A patent/BR8704209A/pt unknown
- 1987-08-13 ES ES8702388A patent/ES2004803A6/es not_active Expired
- 1987-08-13 FI FI873520A patent/FI873520A/fi not_active IP Right Cessation
- 1987-08-13 PT PT85532A patent/PT85532B/pt not_active IP Right Cessation
- 1987-08-14 KR KR1019870008961A patent/KR900004685B1/ko not_active IP Right Cessation
-
1990
- 1990-04-11 US US07/508,546 patent/US4981556A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
SE8605120L (sv) | 1988-02-15 |
PT85532A (en) | 1987-09-01 |
EP0258196A1 (en) | 1988-03-02 |
EP0258196B1 (en) | 1990-05-09 |
NZ221321A (en) | 1989-09-27 |
KR900004685B1 (ko) | 1990-07-02 |
NO873400L (no) | 1988-02-15 |
SE8605120D0 (sv) | 1986-11-28 |
FI873520A (fi) | 1988-02-15 |
NO873400D0 (no) | 1987-08-13 |
DE3762636D1 (de) | 1990-06-13 |
ES2004803A6 (es) | 1989-02-01 |
CA1285353C (en) | 1991-07-02 |
KR880003066A (ko) | 1988-05-13 |
US4981556A (en) | 1991-01-01 |
PT85532B (pt) | 1990-05-31 |
FI873520A0 (fi) | 1987-08-13 |
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