EP0091457B1 - Verfahren zur polysulfidbehandlung im alkalischen pulpverfahren von lignocellulosematerial - Google Patents
Verfahren zur polysulfidbehandlung im alkalischen pulpverfahren von lignocellulosematerial Download PDFInfo
- Publication number
- EP0091457B1 EP0091457B1 EP82903084A EP82903084A EP0091457B1 EP 0091457 B1 EP0091457 B1 EP 0091457B1 EP 82903084 A EP82903084 A EP 82903084A EP 82903084 A EP82903084 A EP 82903084A EP 0091457 B1 EP0091457 B1 EP 0091457B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquor
- digestion
- polysulphide
- chips
- white
- 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
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
- D21C11/0057—Oxidation of liquors, e.g. in order to reduce the losses of sulfur compounds, followed by evaporation or combustion if the liquor in question is a black liquor
-
- 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
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
- D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT82903084T ATE24556T1 (de) | 1981-10-21 | 1982-10-13 | Verfahren zur polysulfidbehandlung im alkalischen pulpverfahren von lignocellulosematerial. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8106203 | 1981-10-21 | ||
SE8106203A SE8106203L (sv) | 1981-10-21 | 1981-10-21 | Sett for polysulfidbehandling av lignocellulosamaterial vid alkalisk massaframstellning |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0091457A1 EP0091457A1 (de) | 1983-10-19 |
EP0091457B1 true EP0091457B1 (de) | 1986-12-30 |
Family
ID=20344836
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82903084A Expired EP0091457B1 (de) | 1981-10-21 | 1982-10-13 | Verfahren zur polysulfidbehandlung im alkalischen pulpverfahren von lignocellulosematerial |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0091457B1 (de) |
AT (1) | ATE24556T1 (de) |
DE (1) | DE3274887D1 (de) |
SE (1) | SE8106203L (de) |
WO (1) | WO1983001469A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI122841B (fi) * | 2004-10-04 | 2012-07-31 | Metso Paper Inc | Menetelmä ja laitteisto selluloosamassan valmistamiseksi |
US8940129B2 (en) * | 2010-12-30 | 2015-01-27 | Uop Llc | Process for reducing one or more insoluble solids in a black liquor |
SE538792C2 (en) | 2015-02-06 | 2016-11-29 | Stora Enso Oyj | Apparatus and method for component assembly |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI40677B (de) * | 1961-05-27 | 1968-12-31 | Papirind Forskningsinst | |
NO123511C (de) * | 1966-05-14 | 1976-07-22 | Domtar Ltd | |
US3567572A (en) * | 1967-09-06 | 1971-03-02 | Pulp Paper Res Inst | Polysulfide liquor impregnation of lignocellulose materials in a multistage pulping process |
US3723242A (en) * | 1971-04-01 | 1973-03-27 | Union Camp Corp | Oxidation of sulfide pulping liquor to form polysulfide liquor in situ |
NO142408C (no) * | 1972-04-11 | 1980-08-20 | Rosenlew Ab Oy W | Fremgangsmaate ved alkalisk cellulosekoking. |
CA1013903A (en) * | 1973-06-04 | 1977-07-19 | Union Camp Corporation | Method of pulping with polysulfide |
-
1981
- 1981-10-21 SE SE8106203A patent/SE8106203L/ not_active Application Discontinuation
-
1982
- 1982-10-13 WO PCT/SE1982/000330 patent/WO1983001469A1/en active IP Right Grant
- 1982-10-13 EP EP82903084A patent/EP0091457B1/de not_active Expired
- 1982-10-13 AT AT82903084T patent/ATE24556T1/de not_active IP Right Cessation
- 1982-10-13 DE DE8282903084T patent/DE3274887D1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
SE8106203L (sv) | 1983-04-22 |
EP0091457A1 (de) | 1983-10-19 |
DE3274887D1 (en) | 1987-02-05 |
ATE24556T1 (de) | 1987-01-15 |
WO1983001469A1 (en) | 1983-04-28 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 19830615 |
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