FR1387853A - Delignification and bleaching of chemical and semi-chemical cellulose pulps - Google Patents
Delignification and bleaching of chemical and semi-chemical cellulose pulpsInfo
- Publication number
- FR1387853A FR1387853A FR947956A FR947956A FR1387853A FR 1387853 A FR1387853 A FR 1387853A FR 947956 A FR947956 A FR 947956A FR 947956 A FR947956 A FR 947956A FR 1387853 A FR1387853 A FR 1387853A
- Authority
- FR
- France
- Prior art keywords
- chemical
- delignification
- bleaching
- semi
- cellulose pulps
- 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
- 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
- D21C9/1036—Use of compounds accelerating or improving the efficiency of the processes
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR947956A FR1387853A (en) | 1963-09-19 | 1963-09-19 | Delignification and bleaching of chemical and semi-chemical cellulose pulps |
US395565A US3384533A (en) | 1963-09-19 | 1964-09-10 | Delignification and bleaching of chemical and semichemical cellulose pulps with oxygen and catalyst |
OA50979A OA00889A (en) | 1963-09-19 | 1964-12-22 | Delignification and bleaching of chemical and michemical cellulose pulps. |
FR125964A FR93286E (en) | 1963-09-19 | 1967-10-26 | Delignification and bleaching of chemical and semi-chemical cellulose pastes. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR947956A FR1387853A (en) | 1963-09-19 | 1963-09-19 | Delignification and bleaching of chemical and semi-chemical cellulose pulps |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1387853A true FR1387853A (en) | 1965-02-05 |
Family
ID=8812657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR947956A Expired FR1387853A (en) | 1963-09-19 | 1963-09-19 | Delignification and bleaching of chemical and semi-chemical cellulose pulps |
Country Status (3)
Country | Link |
---|---|
US (1) | US3384533A (en) |
FR (1) | FR1387853A (en) |
OA (1) | OA00889A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3423282A (en) * | 1964-05-22 | 1969-01-21 | L Air Liquide Sa Pour L Etudes | Delignification of chemical cellulose pulps with oxygen and then chlorine |
WO2014199101A1 (en) | 2013-06-13 | 2014-12-18 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method for treating chemical pulps by treatment with ozone in the presence of magnesium ions |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1601408A (en) * | 1967-06-20 | 1970-08-24 | ||
SE363138B (en) * | 1968-06-13 | 1974-01-07 | Air Liquide Sa Etude Exploit P | |
SE314581B (en) * | 1968-10-29 | 1969-09-08 | Mo Och Domsjoe Ab | |
SE335053B (en) * | 1969-05-13 | 1971-05-10 | Mo Och Domsjoe Ab | |
US3716447A (en) * | 1969-12-15 | 1973-02-13 | Dow Chemical Co | Delignification and bleaching of cellulose pulp with oxygen and alkali in the presence of magnesium chloride inhibitor |
SE355614B (en) * | 1970-05-13 | 1973-04-30 | Mo Och Domsjoe Ab | |
US3716448A (en) * | 1970-05-25 | 1973-02-13 | Int Paper Co | Single stage delignification and bleaching of chemical pulp with oxygen in the presence of a protector |
FI52877B (en) * | 1972-11-16 | 1977-08-31 | Ahlstroem Oy | |
US3975232A (en) * | 1973-11-19 | 1976-08-17 | Westvaco Corporation | Three stage process for pulping lignocellulosic materials including a cyanide ion containing first stage |
US4338158A (en) * | 1976-04-09 | 1982-07-06 | Weyerhaeuser Company | Pulping in the presence of a protector |
CA1079457A (en) * | 1976-09-13 | 1980-06-17 | Robert C. Eckert | Manganic ion bleaching process |
US4288288A (en) * | 1979-06-15 | 1981-09-08 | Weyerhaeuser Company | Apparatus for mixing chemicals into pulp at a refiner inlet |
US5211811A (en) * | 1989-02-15 | 1993-05-18 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification of alkaline treated pulp followed by ozone delignification |
US5173153A (en) * | 1991-01-03 | 1992-12-22 | Union Camp Patent Holding, Inc. | Process for enhanced oxygen delignification using high consistency and a split alkali addition |
US5525195A (en) * | 1989-02-15 | 1996-06-11 | Union Camp Patent Holding, Inc. | Process for high consistency delignification using a low consistency alkali pretreatment |
US5085734A (en) * | 1989-02-15 | 1992-02-04 | Union Camp Patent Holding, Inc. | Methods of high consistency oxygen delignification using a low consistency alkali pretreatment |
US5217574A (en) * | 1989-02-15 | 1993-06-08 | Union Camp Patent Holdings Inc. | Process for oxygen delignifying high consistency pulp by removing and recycling pressate from alkaline pulp |
US5188708A (en) * | 1989-02-15 | 1993-02-23 | Union Camp Patent Holding, Inc. | Process for high consistency oxygen delignification followed by ozone relignification |
US5409570A (en) * | 1989-02-15 | 1995-04-25 | Union Camp Patent Holding, Inc. | Process for ozone bleaching of oxygen delignified pulp while conveying the pulp through a reaction zone |
US5164044A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
US5164043A (en) * | 1990-05-17 | 1992-11-17 | Union Camp Patent Holding, Inc. | Environmentally improved process for bleaching lignocellulosic materials with ozone |
US5554259A (en) * | 1993-10-01 | 1996-09-10 | Union Camp Patent Holdings, Inc. | Reduction of salt scale precipitation by control of process stream Ph and salt concentration |
CA2157154A1 (en) * | 1994-08-29 | 1996-03-01 | Gordon Leary | Bleaching of high-yield pulps with oxygen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA553349A (en) * | 1950-10-04 | 1958-02-18 | C. Harris George | Pulping process |
US2811518A (en) * | 1955-06-07 | 1957-10-29 | Rayonier Inc | Alkaline refining of wood pulp |
CA632280A (en) * | 1958-07-02 | 1961-12-05 | Kimberly-Clark Corporation | Manufacture of bleached cellulosic products resistant to brightness reversion |
-
1963
- 1963-09-19 FR FR947956A patent/FR1387853A/en not_active Expired
-
1964
- 1964-09-10 US US395565A patent/US3384533A/en not_active Expired - Lifetime
- 1964-12-22 OA OA50979A patent/OA00889A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3423282A (en) * | 1964-05-22 | 1969-01-21 | L Air Liquide Sa Pour L Etudes | Delignification of chemical cellulose pulps with oxygen and then chlorine |
WO2014199101A1 (en) | 2013-06-13 | 2014-12-18 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method for treating chemical pulps by treatment with ozone in the presence of magnesium ions |
US10006168B2 (en) | 2013-06-13 | 2018-06-26 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Method for treating chemical pulps by treatment with ozone in the presence of magnesium ions |
RU2670540C2 (en) * | 2013-06-13 | 2018-10-23 | Л'Эр Ликид Сосьете Аноним Пур Л'Этюд Э Л'Эксплуатасьон Де Проседе Жорж Клод | Method for treating pulp by treatment with ozone in presence of magnesium ions |
Also Published As
Publication number | Publication date |
---|---|
US3384533A (en) | 1968-05-21 |
OA00889A (en) | 1968-03-22 |
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