EP0262988A3 - Manufacture of pulp - Google Patents

Manufacture of pulp Download PDF

Info

Publication number
EP0262988A3
EP0262988A3 EP87308780A EP87308780A EP0262988A3 EP 0262988 A3 EP0262988 A3 EP 0262988A3 EP 87308780 A EP87308780 A EP 87308780A EP 87308780 A EP87308780 A EP 87308780A EP 0262988 A3 EP0262988 A3 EP 0262988A3
Authority
EP
European Patent Office
Prior art keywords
lignocellulose
sulphite
delignification
pulp
digested
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.)
Withdrawn
Application number
EP87308780A
Other languages
German (de)
French (fr)
Other versions
EP0262988A2 (en
Inventor
Terry J. Fullerton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Director of Pulp and Paper Research Organisation of New Zealand
Original Assignee
Director of Pulp and Paper Research Organisation of New Zealand
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 Director of Pulp and Paper Research Organisation of New Zealand filed Critical Director of Pulp and Paper Research Organisation of New Zealand
Publication of EP0262988A2 publication Critical patent/EP0262988A2/en
Publication of EP0262988A3 publication Critical patent/EP0262988A3/en
Withdrawn legal-status Critical Current

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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/22—Other features of pulping processes
    • D21C3/222—Use of compounds accelerating the pulping 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
    • 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)

Abstract

Processes for producing pulp from lignocellulosic material in which the delignification agent comprises an alkali metal hydroxide together with a small amount of a sulphite in the range between 0.1 and 15% expressed as Na₂SO₃ by mass on an oven dry basis of said lignocellulose. The addition of the small amount of sulphite gives a marked improvement in both the quality of the paper produced from the pulp and the rate of delignification. The rate of delignification is improved further by the use of a redox agent such as anthraquinone, anthrahydroquinone, homologues and derivatives thereof. Optionally, the process may be carried out in two stages, including a first stage in which lignocellulose is digested in a liquor containing between 0.1 and 15% of a sulphite, and another further stage in which said lignocellulose is digested in a liquor containing an alkali metal hydroxide.
The pulping liquors may also contain other alkaline compounds such as sodium carbonate which act as buffers.
EP87308780A 1986-10-02 1987-10-02 Manufacture of pulp Withdrawn EP0262988A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ21778686 1986-10-02
NZ217786 1986-10-02

Publications (2)

Publication Number Publication Date
EP0262988A2 EP0262988A2 (en) 1988-04-06
EP0262988A3 true EP0262988A3 (en) 1988-06-29

Family

ID=19921815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87308780A Withdrawn EP0262988A3 (en) 1986-10-02 1987-10-02 Manufacture of pulp

Country Status (5)

Country Link
EP (1) EP0262988A3 (en)
BR (1) BR8705254A (en)
FI (1) FI874289A (en)
PT (1) PT85862B (en)
ZA (1) ZA877379B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6325892B1 (en) 1998-09-23 2001-12-04 University Of New Brunswick Method of delignifying sulphite pulp with oxygen and borohydride
US6464827B1 (en) * 2000-11-28 2002-10-15 Praxair Technology, Inc. Method of digesting wood with an alkaline liquor by adding an acidic agent to precipitate dissociated lignin
FI122838B (en) 2005-03-31 2012-07-31 Metso Paper Inc A process for making pulp from lignocellulosic material
US20070240837A1 (en) * 2006-04-13 2007-10-18 Andritz Inc. Hardwood alkaline pulping processes and systems
AR091998A1 (en) * 2012-05-03 2015-03-18 Annikki Gmbh CELLULOSE PREPARATION PROCEDURE WITH LIGNIN LOW CONCENTRATION
CN115976865A (en) * 2021-10-14 2023-04-18 中国科学院大连化学物理研究所 Method for preparing lignocellulose unbleached pulp and co-producing lignosulfonate by chemical method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1651665A (en) * 1927-12-06 And edward p
US2528351A (en) * 1950-08-17 1950-10-31 Hardwood By Products Inc Alkaline sulfite digestion of hardwood
US4213871A (en) * 1976-07-06 1980-07-22 Societe Anonyme dite:EPARCO Biological activators
JPS55163291A (en) * 1979-05-31 1980-12-19 Oji Paper Co Alkaline sulfite pulping method
JPS56118988A (en) * 1980-02-18 1981-09-18 Oji Paper Co Alkali sulfite pulping method
US4363700A (en) * 1977-12-14 1982-12-14 Oji Paper Co., Ltd. Process for pulping lignocellulosic material with an alkaline sulfide cooking liquor containing an accelerating additive and reducing assistant

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1651665A (en) * 1927-12-06 And edward p
US2528351A (en) * 1950-08-17 1950-10-31 Hardwood By Products Inc Alkaline sulfite digestion of hardwood
US4213871A (en) * 1976-07-06 1980-07-22 Societe Anonyme dite:EPARCO Biological activators
US4363700A (en) * 1977-12-14 1982-12-14 Oji Paper Co., Ltd. Process for pulping lignocellulosic material with an alkaline sulfide cooking liquor containing an accelerating additive and reducing assistant
JPS55163291A (en) * 1979-05-31 1980-12-19 Oji Paper Co Alkaline sulfite pulping method
JPS56118988A (en) * 1980-02-18 1981-09-18 Oji Paper Co Alkali sulfite pulping method

Non-Patent Citations (8)

* Cited by examiner, † Cited by third party
Title
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 50, no. 10, April 1980, pages 1010,1011, abstract 9393 Appleton, Wisconsin, US; J. KETTUNEN et al.: "Effect of anthraquinone on neutral sulfite and alkaline sulfite cooking of pine" & PAPERI PUN 61, no. 11:6845-690, 693-694, 699-700 (Nov. 1979) *
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 52, no. 1, July 1981, page 129, abstract no. 1082 Appleton, Wisconsin, US; & JP - A - 55 163 291(OJI PAPER) 19-12-1980 *
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 52, no. 9, March 1982, page 110, abstract no. 10562 Appleton, Wisconsin, US; & JP - A - 56 118 988 (OJI PAPER) 18-09-1981 *
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 56, no. 5, November 1985, pages 586, 587 abstract no. 5231 Appleton, Wisconsin, US; T.J. McDONOUGH ET AL.: "Sulfite-anthraquinone pulping of southern pine for bleachable grades" & CPPA ANN.MFG. (MONTREAL) REPRINTS 71A: 161-170(Jan. 20-30 1985) *
ABSTRACT BULLETIN OF THE INSTITUTE OF PAPER CHEMISTRY, vol. 57, no. 9, page 1258, abstract no. 11374 Appleton, Wisconsin, US; H. OHI et al.: "Modified soda/quinone cooking.(1). Soda/Quinone cooking with sodium sulfite" & J. JAPAN WOOD RES.SOC. (MOKUZAI GAKKAISHI) 32, no. 9: pages 697-704 *
TAPPI JOURNAL, vol. 69, no. 12, December 1986, pags 89,90 Norcross, GA, US; P. HE et al.: "Influence of sulfite on the effectiveness of anthraquinone in soda pulping" *
TAPPI JOURNAL, vol. 69, no. 8, Agust 1986, pages 102-105, Norcross, GA, US; I.B. SANBORN et al.: "An evaluation of the sulfite-AQ pulping process" *
TAPPI JOURNAL. vol. 66, no. 12, December 1983, pages 81,82 Norcross, GA, US; J.M. MACLEOD et al.: "Delignification rates of alkaline-AQ processes" *

Also Published As

Publication number Publication date
FI874289A (en) 1988-04-03
PT85862A (en) 1987-11-01
BR8705254A (en) 1988-05-24
ZA877379B (en) 1989-04-26
EP0262988A2 (en) 1988-04-06
PT85862B (en) 1990-01-12
FI874289A0 (en) 1987-09-30

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Inventor name: FULLERTON, TERRY J.