KR840002934A - Bleaching of Chemical Pulps - Google Patents

Bleaching of Chemical Pulps Download PDF

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Publication number
KR840002934A
KR840002934A KR1019820005769A KR820005769A KR840002934A KR 840002934 A KR840002934 A KR 840002934A KR 1019820005769 A KR1019820005769 A KR 1019820005769A KR 820005769 A KR820005769 A KR 820005769A KR 840002934 A KR840002934 A KR 840002934A
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KR
South Korea
Prior art keywords
treatment
aqueous solution
bleaching
acidic
solution containing
Prior art date
Application number
KR1019820005769A
Other languages
Korean (ko)
Other versions
KR850001341B1 (en
Inventor
라셔날 도미니퀴 (외 1)
Original Assignee
쟝후씽
피씨유 케이 프로뒤 쉬미퀴 유징 클망
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.)
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Publication date
Application filed by 쟝후씽, 피씨유 케이 프로뒤 쉬미퀴 유징 클망 filed Critical 쟝후씽
Publication of KR840002934A publication Critical patent/KR840002934A/en
Application granted granted Critical
Publication of KR850001341B1 publication Critical patent/KR850001341B1/en

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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
    • 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
    • D21C9/1005—Pretreatment of the pulp, e.g. degassing the pulp

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

내용 없음No content

Description

화학펄프류의 표백처리법.Bleaching process of chemical pulp.

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

Claims (9)

산성의 수용액으로 1차 치리를 수행한 다음에-과산화물의 알칼리성 수용액으로 2차처리하여 화학펄프를 표백처리함에 있어서, 1차처리의 온도범위를 적어도 50℃ 보다 높은 온도범위로 하여 수행함을 특징으로 하는 화학펄프의 표백처리법.In the first pulp treatment with an acidic aqueous solution followed by a second treatment with an alkaline aqueous solution of peroxide, the chemical pulp is bleached, characterized in that the temperature range of the first treatment is at least 50 ° C. Bleaching treatment of chemical pulp 1차처리의 온도 범위를 60 내지 80℃로 하고서 수행함을 특징으로 하는 청구범위 제1항의 표백처리법.The bleaching treatment method according to claim 1, which is carried out with the temperature range of the primary treatment being 60 to 80 ° C. 산성 수용액의 PH를 1 내지 5의 범위 바람직하기는 2 내지 3의 범위로 하고서 1차처리를 수행함을 특징으로 하는 청구범위 제1항 내지 제2항 기재의 표백처리법.Bleaching treatment according to claims 1 to 2 characterized in that the primary treatment is carried out with the pH of the acidic aqueous solution being in the range of 1 to 5, preferably in the range of 2 to 3. 1차처리의 소요시간을 60 내지 120분간으로 하고서 수행함을 특징으로 하는 청구범위 제1항 내지 제3항에 기재한 표백처리법.The bleaching treatment method according to claims 1 to 3, wherein the time required for the first treatment is 60 to 120 minutes. 무기산 또는 유기산 함유의 산성용액을 1차처리용 산성용액으로 하고서 수행함을 특징으로 하는 청구범위 제1항 내지 제4항 기재의 표백 처리법.The bleaching treatment method according to claims 1 to 4, wherein the acidic solution containing the inorganic acid or the organic acid is used as the acidic solution for the first treatment. 환산이 함유된 산성수용액을 1차처리용의 산성수용액으로 하고서 수행함을 특징으로 하는 청구범위 제5항 기재의 표백처리법.The bleaching treatment according to claim 5, wherein the acidic solution containing a conversion is used as the acidic aqueous solution for primary treatment. 과산화수소를 중량비로 0.5 내지 10%, 바람직하기는 1 내지 2%가 함유된 알칼리성 수용액을 2차처리용 수용액으로 하고서 수행함을 특징으로 하는 청구범위 제1항 내지 제6항 기재의 표백처리법.The bleaching treatment according to claims 1 to 6, wherein an alkaline aqueous solution containing hydrogen peroxide in a weight ratio of 0.5 to 10%, preferably 1 to 2% is used as the aqueous solution for secondary treatment. 수산화나트륨을 중량비로 1 내지 10%, 바람직하기는 1 내지 5%를 함유하는 알칼리성 수용액을 2차 처리용 수용액으로 하고서 수행함을 특징으로 하는 청구범위 제7항 기재의 표백처리법.The bleaching method according to claim 7, characterized in that an alkaline aqueous solution containing sodium hydroxide in a weight ratio of 1 to 10%, preferably 1 to 5% is used as the aqueous solution for secondary treatment. 가열한 산성수용액으로 처리하는 1차 처리와 알칼리성의 과산화물이 수용액으로 처리하는 2차처리와의 각기를 여러번에 공하여 되풀이하여 수행함을 특징으로 하는 청구범위 제1항 내지 제8항 기재의 표백처리법.The bleaching treatment according to claims 1 to 8, which is performed repeatedly in several times, respectively, between the first treatment treated with heated acidic aqueous solution and the second treatment treated with alkaline peroxide with aqueous solution. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR8205769A 1982-01-28 1982-12-23 Process for the treatment of chemical paper pulps KR850001341B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8201603A FR2520397A1 (en) 1982-01-28 1982-01-28 PROCESS FOR TREATING CHEMICAL PAPER PASTES
FR8201603 1982-01-28
FR1603 1982-01-28

Publications (2)

Publication Number Publication Date
KR840002934A true KR840002934A (en) 1984-07-21
KR850001341B1 KR850001341B1 (en) 1985-09-19

Family

ID=9270561

Family Applications (1)

Application Number Title Priority Date Filing Date
KR8205769A KR850001341B1 (en) 1982-01-28 1982-12-23 Process for the treatment of chemical paper pulps

Country Status (16)

Country Link
JP (1) JPS58132190A (en)
KR (1) KR850001341B1 (en)
AT (1) AT381736B (en)
BE (1) BE895645A (en)
BR (1) BR8300402A (en)
CA (1) CA1206704A (en)
CH (1) CH653720A5 (en)
DE (1) DE3302580A1 (en)
ES (1) ES519327A0 (en)
FI (1) FI76134C (en)
FR (1) FR2520397A1 (en)
IT (1) IT1162810B (en)
NO (1) NO161391C (en)
OA (1) OA07313A (en)
PT (1) PT76145B (en)
SE (1) SE462288B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1227304A (en) * 1984-08-01 1987-09-29 Raymond C. Francis Delignification of pulp
FR2593527B1 (en) * 1986-01-30 1988-03-25 Centre Tech Ind Papier PROCESS FOR BLEACHING MECHANICAL PASTA.
DE402335T1 (en) * 1989-06-06 1992-04-09 Eka Nobel Ab, Surte METHOD FOR BLEACHING LIGNOCELLULOSE-CONTAINING CELLS.
US5091054A (en) * 1989-08-18 1992-02-25 Degussa Corporation Process for bleaching and delignification of lignocellulosic
US5246543A (en) * 1989-08-18 1993-09-21 Degussa Corporation Process for bleaching and delignification of lignocellulosic materials
DE3937932A1 (en) * 1989-11-15 1991-05-16 Holtzmann & Cie Ag E Delignification and bleaching of pulp with alkali chlorite - by adding chlorite before acidification to produce nascent reagent, minimising pollution
SE466061B (en) * 1990-04-23 1991-12-09 Eka Nobel Ab Bleaching of chemical pulp by treatment with first a complexing agent and then a peroxide containing substance
SE9001481L (en) * 1990-04-23 1991-10-24 Eka Nobel Ab REDUCTION OF HALOGEN ORGANIC SUBSTANCES IN BLEACHING WASTE
US6398908B1 (en) 1991-04-30 2002-06-04 Eka Nobel Ab Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound
SE470065C (en) * 1991-04-30 1996-01-15 Eka Nobel Ab Treatment of chemical pulp with an acid and then a magnesium and calcium compound in chlorine-free bleaching
SE500113C2 (en) * 1992-07-09 1994-04-18 Kamyr Ab Method of bleaching pulp for disposal of released metals
SE512137C2 (en) * 1992-10-29 2000-01-31 Eka Chemicals Ab Process for bleaching lignocellulosic pulp
SE9301960L (en) * 1993-06-08 1994-07-25 Kvaerner Pulping Tech Bleaching of chemical pulp with peroxide at overpressure
US6776876B1 (en) 1994-10-13 2004-08-17 Andritz Oy Method of treating cellulosic pulp to remove hexenuronic acid
WO1996025552A1 (en) * 1995-02-17 1996-08-22 Ahlstrom Machinery Oy Method of pretreating pulp to be bleached with peroxide
SE526241C2 (en) * 2003-12-18 2005-08-02 Metso Paper Inc Procedure for acidifying lignocellulosic pulp before ozone bleaching
US8080560B2 (en) 2004-12-17 2011-12-20 3M Innovative Properties Company Immune response modifier formulations containing oleic acid and methods
US8889154B2 (en) 2005-09-15 2014-11-18 Medicis Pharmaceutical Corporation Packaging for 1-(2-methylpropyl)-1H-imidazo[4,5-c] quinolin-4-amine-containing formulation
US8980051B2 (en) 2009-04-24 2015-03-17 International Paper Company Sulfonation of pulp produced by alkali pulping process

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1705897A (en) * 1922-03-16 1929-03-19 Bradley Linn Bleaching of pulp
FR1010501A (en) * 1948-08-31 1952-06-12 Papiers Abadie Sa Des Cellulose pulp bleaching process
US2668095A (en) * 1950-09-22 1954-02-02 Du Pont Bleaching chemical paper pulp
FR1201712A (en) * 1958-07-11 1960-01-05 Fr Du Xylon Soc Cellulose pulp bleaching improvements
JPS51102103A (en) * 1975-03-05 1976-09-09 Nippon Parupu Kogyo Kk Ryusanenhoparupuno hyohakuhoho
FR2398839A1 (en) * 1977-07-29 1979-02-23 Centre Tech Ind Papier Kraft type paper pulp prepn. without sulphur pollutants - by treating shavings with sodium hydroxide followed by stabilised peroxide
DE2742262C2 (en) * 1977-09-20 1982-06-09 Degussa Ag, 6000 Frankfurt Process for the production of a medium to high viscosity softwood sulphite pulp
JPS5685489A (en) * 1979-12-10 1981-07-11 Kogyo Gijutsuin Pulp production

Also Published As

Publication number Publication date
SE8207356D0 (en) 1982-12-22
PT76145B (en) 1985-11-25
IT8367014A0 (en) 1983-01-07
AT381736B (en) 1986-11-25
CH653720A5 (en) 1986-01-15
FR2520397A1 (en) 1983-07-29
JPS58132190A (en) 1983-08-06
NO830268L (en) 1983-07-29
FI830288L (en) 1983-07-29
IT1162810B (en) 1987-04-01
DE3302580C2 (en) 1992-07-02
BR8300402A (en) 1983-11-01
NO161391C (en) 1989-08-09
FR2520397B1 (en) 1984-03-09
ES8400520A1 (en) 1983-10-16
SE8207356L (en) 1983-07-29
SE462288B (en) 1990-05-28
FI76134C (en) 1988-09-09
BE895645A (en) 1983-07-19
DE3302580A1 (en) 1983-08-04
ES519327A0 (en) 1983-10-16
FI830288A0 (en) 1983-01-27
CA1206704A (en) 1986-07-02
FI76134B (en) 1988-05-31
KR850001341B1 (en) 1985-09-19
ATA26383A (en) 1986-04-15
JPH0217679B2 (en) 1990-04-23
NO161391B (en) 1989-05-02
PT76145A (en) 1983-02-01
OA07313A (en) 1984-08-31

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