SE422818B - Forfarande for foredling av allulosamassa genom blekning eller extrahering - Google Patents
Forfarande for foredling av allulosamassa genom blekning eller extraheringInfo
- Publication number
- SE422818B SE422818B SE7803674A SE7803674A SE422818B SE 422818 B SE422818 B SE 422818B SE 7803674 A SE7803674 A SE 7803674A SE 7803674 A SE7803674 A SE 7803674A SE 422818 B SE422818 B SE 422818B
- Authority
- SE
- Sweden
- Prior art keywords
- pulp
- bleaching
- steam
- drying
- treatment device
- 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
- D21C9/1026—Other features in bleaching processes
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- External Artificial Organs (AREA)
Priority Applications (15)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7803674A SE422818B (sv) | 1978-03-31 | 1978-03-31 | Forfarande for foredling av allulosamassa genom blekning eller extrahering |
NZ189999A NZ189999A (en) | 1978-03-31 | 1979-03-26 | Refining cellulose pulps by bleaching or extraction |
FI791049A FI67893C (fi) | 1978-03-31 | 1979-03-29 | Foerfarande foer foeraedling av cellulosamassor |
ZA791496A ZA791496B (en) | 1978-03-31 | 1979-03-29 | A method of refining cellulose material |
CH1069079A CH643902A5 (de) | 1978-03-31 | 1979-03-29 | Verfahren zur reinigung von cellulosebreien. |
DE792945421A DE2945421A1 (en) | 1978-03-31 | 1979-03-29 | A method of refining cellulose pulps |
PCT/SE1979/000073 WO1979000861A1 (en) | 1978-03-31 | 1979-03-29 | A method of refining cellulose pulps |
NO791042A NO154137C (no) | 1978-03-31 | 1979-03-29 | Fremgangsmaate ved foredling av cellulosemasser. |
BR7908799A BR7908799A (pt) | 1978-03-31 | 1979-03-29 | Processo para refinacao de polpas de celulose |
AT0237679A AT371861B (de) | 1978-03-31 | 1979-03-30 | Verfahren zur veredelung von zellulosestoffen |
AU45668/79A AU509369B2 (en) | 1978-03-31 | 1979-03-30 | Bleaching and extraction of cellulosic pulps |
ES479108A ES479108A1 (es) | 1978-03-31 | 1979-03-30 | Procedimiento para refinar pulpas de celulosa. |
CA324,586A CA1115005A (en) | 1978-03-31 | 1979-04-02 | Process for the chemical refining of cellulose pulp |
US06/026,470 US4244778A (en) | 1978-03-31 | 1979-04-02 | Process for the chemical refining of cellulose pulp |
EP79900386A EP0014713B1 (en) | 1978-03-31 | 1979-11-05 | A method of refining cellulose pulps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7803674A SE422818B (sv) | 1978-03-31 | 1978-03-31 | Forfarande for foredling av allulosamassa genom blekning eller extrahering |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7803674L SE7803674L (sv) | 1979-10-01 |
SE422818B true SE422818B (sv) | 1982-03-29 |
Family
ID=20334464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7803674A SE422818B (sv) | 1978-03-31 | 1978-03-31 | Forfarande for foredling av allulosamassa genom blekning eller extrahering |
Country Status (15)
Country | Link |
---|---|
US (1) | US4244778A (fi) |
EP (1) | EP0014713B1 (fi) |
AT (1) | AT371861B (fi) |
AU (1) | AU509369B2 (fi) |
BR (1) | BR7908799A (fi) |
CA (1) | CA1115005A (fi) |
CH (1) | CH643902A5 (fi) |
DE (1) | DE2945421A1 (fi) |
ES (1) | ES479108A1 (fi) |
FI (1) | FI67893C (fi) |
NO (1) | NO154137C (fi) |
NZ (1) | NZ189999A (fi) |
SE (1) | SE422818B (fi) |
WO (1) | WO1979000861A1 (fi) |
ZA (1) | ZA791496B (fi) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU539108B2 (en) * | 1979-04-17 | 1984-09-13 | Interox Societe Anonyme | Delignification of unbleached chemical pulp |
ZA837927B (en) * | 1983-05-23 | 1985-01-30 | Process Evaluation Devel | Thermomechanical digestion process using bleachants |
DE3610940A1 (de) * | 1986-03-04 | 1987-09-10 | Escher Wyss Gmbh | Hochtemperatur-hochkonsistenz-schnellbleiche |
US4743338A (en) * | 1986-05-19 | 1988-05-10 | Kamyr, Inc. | Method of removing air from lignocellulosic material by passing the material through conduit paths of different diameters |
GB2215350B (en) * | 1988-03-16 | 1992-05-20 | Thiokol Morton Inc | Process for bleaching mechanical wood pulp |
DE4000347C1 (fi) * | 1990-01-08 | 1991-04-25 | Mtm Obermaier Gmbh, 6733 Hassloch, De | |
US5384012A (en) * | 1993-02-12 | 1995-01-24 | James River Corporation Of Virginia | Process for crosslinking of cellulosic fibers |
US5384011A (en) * | 1993-02-12 | 1995-01-24 | James River Corporation Of Virginia | Process for crosslinking of cellulosic fibers |
SE500616C2 (sv) * | 1993-06-08 | 1994-07-25 | Kvaerner Pulping Tech | Blekning av kemisk massa med peroxid vid övertryck |
JP2862787B2 (ja) * | 1994-03-09 | 1999-03-03 | 日本製紙株式会社 | 塗被紙の製造方法 |
DE4411681A1 (de) * | 1994-04-05 | 1995-10-12 | Hoechst Ag | Verfahren zur Herstellung niedermolekularer Polysaccharidether |
FR2719853B1 (fr) * | 1994-05-11 | 1996-06-21 | Atochem Elf Sa | Procédé de délignification et de blanchiment d'une pâte à papier chimique. |
FR2719854B1 (fr) * | 1994-05-11 | 1996-06-21 | Atochem Elf Sa | Procédé de préparation de pâtes à papier chimiques délignifiées et blanchies. |
SE9402101L (sv) * | 1994-06-15 | 1995-12-16 | Moelnlycke Ab | Lättavvattnad, bulkig, kemimekanisk massa med låg spet- och finmaterialhalt |
WO1997032077A1 (en) * | 1996-02-27 | 1997-09-04 | Tetra Laval Holding & Finance S.A. | Process for sanitizing post-consumer paper fibers and product formed therefrom |
US6375797B1 (en) * | 1996-06-20 | 2002-04-23 | Andritz-Ahlstrom Oy | Bleaching chemical pulp in a PkDQ-Po Sequence |
FI113670B (fi) * | 1999-12-09 | 2004-05-31 | Upm Kymmene Corp | Menetelmä painopaperin valmistamiseksi |
FI113552B (fi) * | 1999-12-09 | 2004-05-14 | Upm Kymmene Corp | Menetelmä painopaperin valmistamiseksi |
US6743332B2 (en) * | 2001-05-16 | 2004-06-01 | Weyerhaeuser Company | High temperature peroxide bleaching of mechanical pulps |
US7703983B2 (en) * | 2004-06-10 | 2010-04-27 | Ntn Corporation | Sliding material and sliding bearing |
JP5030566B2 (ja) * | 2005-12-27 | 2012-09-19 | 信越化学工業株式会社 | セルロースエーテルの製造方法 |
JP5030568B2 (ja) * | 2005-12-27 | 2012-09-19 | 信越化学工業株式会社 | アルカリセルロース及びセルロースエーテルの製造方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA799172A (en) * | 1968-11-19 | Nardi Franco | Equipment for processing of pulps obtained from woods | |
US2513344A (en) * | 1946-09-19 | 1950-07-04 | Buffalo Electro Chem Co | Method of bleaching high-density pulp |
US2707146A (en) * | 1951-08-08 | 1955-04-26 | Scott Paper Co | Method of bleaching mechanically disintegrated wood pulp |
US2920011A (en) * | 1955-03-18 | 1960-01-05 | Waldorf Paper Prod Co | Elevated temperature and pressure two stage hypochlorite peroxide pulp bleaching process |
US2963395A (en) * | 1958-03-31 | 1960-12-06 | Crown Zellerbach Corp | Process of bleaching lignocellulosic pulps |
US3256614A (en) * | 1961-05-29 | 1966-06-21 | D & S Engineering Ltd | Plant for drying of finely divided material, especially wood pulp and cellulose |
US3255071A (en) * | 1963-10-25 | 1966-06-07 | Theodor N Kleinert | Process for production of alkali cellulose in the absence of an aqueous liquid phase |
SE333299B (sv) * | 1967-11-10 | 1971-03-08 | Sunds Ab | Foerfarande vid och anordning foer blekning av foeretraedesvis cellulosamassa med gasformigt blekmedel |
CA849982A (en) * | 1967-12-15 | 1970-08-25 | M. Clayton David | Process for producing wood pulp |
US4030969A (en) * | 1972-06-13 | 1977-06-21 | Defibrator Ab | Method of dispersing a bleaching agent into a stream of fibrous cellulosic pulp material in a throttling nozzle |
SE415581B (sv) * | 1977-04-18 | 1980-10-13 | Mo Och Domsjoe Ab | Forfarande for perocidblekning av hogutbytesmassa |
-
1978
- 1978-03-31 SE SE7803674A patent/SE422818B/sv not_active IP Right Cessation
-
1979
- 1979-03-26 NZ NZ189999A patent/NZ189999A/xx unknown
- 1979-03-29 WO PCT/SE1979/000073 patent/WO1979000861A1/en unknown
- 1979-03-29 BR BR7908799A patent/BR7908799A/pt not_active IP Right Cessation
- 1979-03-29 ZA ZA791496A patent/ZA791496B/xx unknown
- 1979-03-29 NO NO791042A patent/NO154137C/no unknown
- 1979-03-29 DE DE792945421A patent/DE2945421A1/de active Granted
- 1979-03-29 FI FI791049A patent/FI67893C/fi not_active IP Right Cessation
- 1979-03-29 CH CH1069079A patent/CH643902A5/de not_active IP Right Cessation
- 1979-03-30 AU AU45668/79A patent/AU509369B2/en not_active Expired
- 1979-03-30 AT AT0237679A patent/AT371861B/de not_active IP Right Cessation
- 1979-03-30 ES ES479108A patent/ES479108A1/es not_active Expired
- 1979-04-02 US US06/026,470 patent/US4244778A/en not_active Expired - Lifetime
- 1979-04-02 CA CA324,586A patent/CA1115005A/en not_active Expired
- 1979-11-05 EP EP79900386A patent/EP0014713B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2945421C2 (fi) | 1989-09-14 |
WO1979000861A1 (en) | 1979-11-01 |
FI791049A (fi) | 1979-10-01 |
NO791042L (no) | 1979-10-02 |
FI67893B (fi) | 1985-02-28 |
CH643902A5 (de) | 1984-06-29 |
SE7803674L (sv) | 1979-10-01 |
AU509369B2 (en) | 1980-05-08 |
ATA237679A (de) | 1982-12-15 |
ES479108A1 (es) | 1979-07-01 |
DE2945421A1 (en) | 1980-12-11 |
BR7908799A (pt) | 1981-08-04 |
NO154137B (no) | 1986-04-14 |
AU4566879A (en) | 1979-11-22 |
ZA791496B (en) | 1980-04-30 |
CA1115005A (en) | 1981-12-29 |
NO154137C (no) | 1986-07-23 |
NZ189999A (en) | 1982-03-23 |
AT371861B (de) | 1983-08-10 |
EP0014713B1 (en) | 1984-10-24 |
US4244778A (en) | 1981-01-13 |
EP0014713A1 (en) | 1980-09-03 |
FI67893C (fi) | 1985-06-10 |
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Legal Events
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NAL | Patent in force |
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