PT100898A - Processo para o tratamento de material contendo sulfato de sodio e/ou carbonato de sodio de um moinho de polpa - Google Patents
Processo para o tratamento de material contendo sulfato de sodio e/ou carbonato de sodio de um moinho de polpaInfo
- Publication number
- PT100898A PT100898A PT100898A PT10089892A PT100898A PT 100898 A PT100898 A PT 100898A PT 100898 A PT100898 A PT 100898A PT 10089892 A PT10089892 A PT 10089892A PT 100898 A PT100898 A PT 100898A
- Authority
- PT
- Portugal
- Prior art keywords
- polpa
- mill
- treatment
- material containing
- sodium carbonate
- 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
- 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
- D21C11/066—Separation of solid compounds from these gases; further treatment of recovered products
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/22—Alkali metal sulfides or polysulfides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/22—Alkali metal sulfides or polysulfides
- C01B17/24—Preparation by reduction
- C01B17/28—Preparation by reduction with reducing gases
-
- 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
- D21C11/0064—Aspects concerning the production and the treatment of green and white liquors, e.g. causticizing green liquor
- D21C11/0071—Treatment of green or white liquors with gases, e.g. with carbon dioxide for carbonation; Expulsion of gaseous compounds, e.g. hydrogen sulfide, from these liquors by this treatment (stripping); Optional separation of solid compounds formed in the liquors by this treatment
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI914586A FI914586A (fi) | 1991-09-27 | 1991-09-27 | Foerfarande foer foerminskning av asklasten av en cellufabriks pannanlaeggning |
Publications (1)
Publication Number | Publication Date |
---|---|
PT100898A true PT100898A (pt) | 1993-10-29 |
Family
ID=8533203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PT100898A PT100898A (pt) | 1991-09-27 | 1992-09-24 | Processo para o tratamento de material contendo sulfato de sodio e/ou carbonato de sodio de um moinho de polpa |
Country Status (7)
Country | Link |
---|---|
US (1) | US5328563A (pt) |
JP (1) | JPH06341082A (pt) |
CA (1) | CA2078934A1 (pt) |
FI (1) | FI914586A (pt) |
FR (1) | FR2681883A1 (pt) |
PT (1) | PT100898A (pt) |
SE (1) | SE9202780L (pt) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5938892A (en) * | 1991-01-28 | 1999-08-17 | Champion International Corporation | Process for recycling bleach plant filtrate |
US5853535A (en) * | 1991-01-28 | 1998-12-29 | Champion International Corporation | Process for manufacturing bleached pulp including recycling |
JP3143222B2 (ja) * | 1992-08-21 | 2001-03-07 | 大王製紙株式会社 | 酸及びアルカリの製造方法 |
US6121541A (en) * | 1997-07-28 | 2000-09-19 | Bp Solarex | Monolithic multi-junction solar cells with amorphous silicon and CIS and their alloys |
SE518735C2 (sv) * | 1999-10-13 | 2002-11-12 | Chemrec Ab | Förfarande och anordning vid utvinning av kemikalier i samband med förgasning av restprodukter från massaframställning |
CA2427799A1 (en) * | 2000-11-06 | 2002-05-10 | Institute Of Paper Science And Technology, Inc. | Fiber reinforced mineral-based materials and methods of making the same |
FR2997941B1 (fr) * | 2012-11-15 | 2023-03-03 | Arkema France | Procede de preparation de sulfure de metal alcalin |
FI126767B (en) * | 2012-11-16 | 2017-05-15 | Andritz Oy | Method for extracting the ash from a recovery boiler |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI27748A (fi) * | 1955-06-10 | Sixten Hilding Lars Bergstroem | Förfaringssätt för ersättande av alkali- och svavelförluster vid sulfatcellulosaprocessen | |
US2106952A (en) * | 1932-12-28 | 1938-02-01 | Stikstofbindingsindustrie Nede | Process of producing anhydrous alkall metal sulphides |
CH180398A (fr) * | 1934-05-30 | 1935-10-31 | Nede Stikstofbindingsindustrie | Procédé de fabrication de sulfure de sodium pratiquement pur et anhydre. |
US2711430A (en) * | 1950-06-27 | 1955-06-21 | Svenska Cellulosaforeningens C | Method of improving the yield of methyl sulfide obtained by heating waste liquors fro cellulose manufacture by adding inorganic sulfides |
US3236589A (en) * | 1961-02-03 | 1966-02-22 | Reinhall Rolf Bertil | Method of working up cellulose waste liquor containing sodium and sulfur |
US3322492A (en) * | 1964-07-31 | 1967-05-30 | Little Inc A | Kraft black liquor recovery |
US3762989A (en) * | 1971-07-30 | 1973-10-02 | St Regis Paper Co | Pyrolysis of spent pulping liquors |
SE378119B (pt) * | 1972-04-04 | 1975-08-18 | Angpanneforeningen | |
US4439272A (en) * | 1982-01-13 | 1984-03-27 | Nguyen Xuan T | Pulp mill residual liquor recovery process |
SE462106B (sv) * | 1986-11-28 | 1990-05-07 | Alf Ove Andersson | Saett att utvinna energi och kemikalier ur avlut fraan massaberedning |
SE465039B (sv) * | 1989-11-23 | 1991-07-15 | Chemrec Ab | Saett att framstaella koklutar med hoeg sulfiditet foer sulfatmassakokning |
-
1991
- 1991-09-27 FI FI914586A patent/FI914586A/fi not_active Application Discontinuation
-
1992
- 1992-09-11 US US07/943,234 patent/US5328563A/en not_active Expired - Fee Related
- 1992-09-23 CA CA002078934A patent/CA2078934A1/en not_active Abandoned
- 1992-09-23 FR FR9211329A patent/FR2681883A1/fr active Pending
- 1992-09-24 PT PT100898A patent/PT100898A/pt not_active Application Discontinuation
- 1992-09-25 SE SE9202780A patent/SE9202780L/ not_active Application Discontinuation
- 1992-09-25 JP JP4256997A patent/JPH06341082A/ja not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
SE9202780L (sv) | 1993-03-28 |
JPH06341082A (ja) | 1994-12-13 |
FI914586A0 (fi) | 1991-09-27 |
US5328563A (en) | 1994-07-12 |
FI914586A (fi) | 1993-03-28 |
CA2078934A1 (en) | 1993-03-28 |
SE9202780D0 (sv) | 1992-09-25 |
FR2681883A1 (fr) | 1993-04-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB1A | Laying open of patent application |
Effective date: 19930521 |
|
FC3A | Refusal |
Effective date: 19990428 |