ZA762574B - Improved process for oxygen/alkali delignification of wood pulp - Google Patents

Improved process for oxygen/alkali delignification of wood pulp

Info

Publication number
ZA762574B
ZA762574B ZA762574A ZA762574A ZA762574B ZA 762574 B ZA762574 B ZA 762574B ZA 762574 A ZA762574 A ZA 762574A ZA 762574 A ZA762574 A ZA 762574A ZA 762574 B ZA762574 B ZA 762574B
Authority
ZA
South Africa
Prior art keywords
oxygen
wood pulp
improved process
alkali delignification
delignification
Prior art date
Application number
ZA762574A
Other languages
English (en)
Inventor
K Brown
A Kempf
Original Assignee
Int Paper Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Int Paper Co filed Critical Int Paper Co
Publication of ZA762574B publication Critical patent/ZA762574B/xx

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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Medicines Containing Plant Substances (AREA)
ZA762574A 1975-10-10 1976-04-29 Improved process for oxygen/alkali delignification of wood pulp ZA762574B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/621,355 US4002526A (en) 1975-10-10 1975-10-10 Oxygen-alkali delignification of low consistency wood pulp

Publications (1)

Publication Number Publication Date
ZA762574B true ZA762574B (en) 1977-04-27

Family

ID=24489828

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA762574A ZA762574B (en) 1975-10-10 1976-04-29 Improved process for oxygen/alkali delignification of wood pulp

Country Status (11)

Country Link
US (1) US4002526A (cg-RX-API-DMAC7.html)
JP (1) JPS6024875B2 (cg-RX-API-DMAC7.html)
AT (1) AT349883B (cg-RX-API-DMAC7.html)
AU (1) AU502921B2 (cg-RX-API-DMAC7.html)
BR (1) BR7603292A (cg-RX-API-DMAC7.html)
CA (1) CA1070056A (cg-RX-API-DMAC7.html)
FI (1) FI65096C (cg-RX-API-DMAC7.html)
FR (1) FR2327357A1 (cg-RX-API-DMAC7.html)
NO (1) NO143752C (cg-RX-API-DMAC7.html)
SE (1) SE436584B (cg-RX-API-DMAC7.html)
ZA (1) ZA762574B (cg-RX-API-DMAC7.html)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU3102077A (en) * 1976-12-01 1979-06-07 New Zealand Dev Finance Treating lignocellulosic or cellulosic pulp
US4622100A (en) * 1984-10-01 1986-11-11 International Paper Company Process for the delignification of lignocellulosic material with oxygen, ferricyanide, and a protector
ATE169699T1 (de) * 1993-06-16 1998-08-15 Lignozym Gmbh Verfahren zur veränderung, abbau oder bleichen von lignin, ligninhaltigen materialien oder kohle
WO1996033308A1 (en) * 1995-04-20 1996-10-24 R-J Holding Company Pulping process
US20030150065A1 (en) * 1998-12-30 2003-08-14 Sheng-Hsin Hu Liquid ammonia explosion treatment of wood fibers
WO2009138090A2 (en) * 2008-05-14 2009-11-19 Rådet For Agroindustri A process for the production of hydrolysed plant material
RU2636363C2 (ru) * 2013-03-21 2017-11-22 Джапан Тобакко Инк. Способ получения черного щелочного раствора и способ получения содержащей ароматизирующий компонент жидкости
US11154087B2 (en) 2016-02-02 2021-10-26 R.J. Reynolds Tobacco Company Method for preparing flavorful compounds isolated from black liquor and products incorporating the flavorful compounds

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2071304A (en) * 1934-12-04 1937-02-16 Great Western Electro Chemical Co Process of manufacture of products of ground wood pulp
US2271218A (en) * 1937-08-31 1942-01-27 Baudisch Friedrich Method of decomposing maize straw for textile purposes
NL54060C (cg-RX-API-DMAC7.html) * 1939-03-22 1942-10-15
US2361639A (en) * 1940-07-15 1944-10-31 Henry A Wallace Process for defibering lignocellulosic materials
US2372561A (en) * 1941-06-19 1945-03-27 Joseph C Elgin Process of treating low rank textile fibers
US2394989A (en) * 1942-03-11 1946-02-19 Bonard Claude Manufacture of cellulose
US3161562A (en) * 1960-12-13 1964-12-15 Champion Papers Inc Pulping cellulose material with an alkaline cooking liquor containing hydrazine
US3308012A (en) * 1963-08-19 1967-03-07 Du Pont Use of sulfamic acid in chlorination step of multistage bleaching process
US3368935A (en) * 1964-10-12 1968-02-13 Sonoco Products Co Sulfite pulping process with urea
US3507743A (en) * 1965-02-23 1970-04-21 Fmc Corp Bleaching of wood pulps with reductive bleaching agents and thiourea
US3274049A (en) * 1965-02-25 1966-09-20 Pullman Inc Process for pulping bagasse with ammonium hydroxide and oxygen
US3401076A (en) * 1965-08-12 1968-09-10 Allied Chem Increasing kraft pulp yield with hydroxylamine
CA752864A (en) * 1965-10-12 1967-02-14 Pulp And Paper Research Institute Of Canada Extraction of fibrous cellulosic material with ammonia following treatment with chlorine, chlorine dioxide or other reagents
FR1531616A (fr) * 1967-05-24 1968-07-05 Azote Office Nat Ind Procédé de blanchiment textile rapide
CA864409A (en) * 1969-04-14 1971-02-23 H. Andrews Douglas Pulp bleaching process
ZA697269B (en) * 1969-10-15 1971-04-28 Air Liquide Sa Exploit Des Pro Improvements in or relating to the delignification and bleaching of cellulose pulp with oxygen gas
GB1310835A (en) * 1970-05-28 1973-03-21 Pulp Paper Research Inst Of Ca Treatment of chemical cellulosic pulp
US3740311A (en) * 1971-05-24 1973-06-19 Pulp Paper Res Inst Delignification of cellulosic pulp with ammonia gas followed by heating in the presence of oxygen
FI52877B (cg-RX-API-DMAC7.html) * 1972-11-16 1977-08-31 Ahlstroem Oy
US3832276A (en) * 1973-03-07 1974-08-27 Int Paper Co Delignification and bleaching of a cellulose pulp slurry with oxygen

Also Published As

Publication number Publication date
US4002526A (en) 1977-01-11
SE436584B (sv) 1985-01-07
AU1341376A (en) 1977-11-03
AU502921B2 (en) 1979-08-16
NO761808L (cg-RX-API-DMAC7.html) 1977-04-13
BR7603292A (pt) 1977-05-24
FI65096C (fi) 1984-03-12
JPS5253004A (en) 1977-04-28
CA1070056A (en) 1980-01-22
SE7601934L (sv) 1977-04-11
ATA398976A (de) 1978-09-15
AT349883B (de) 1979-04-25
FI65096B (fi) 1983-11-30
JPS6024875B2 (ja) 1985-06-14
FR2327357A1 (fr) 1977-05-06
NO143752B (no) 1980-12-29
FI761526A7 (cg-RX-API-DMAC7.html) 1977-04-11
NO143752C (no) 1981-04-08

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