DE69938189D1 - OZONE BLEACHES OF A MEDIUM-CONSISTENT PULP WITHOUT HIGH-HOSPITALITY - Google Patents

OZONE BLEACHES OF A MEDIUM-CONSISTENT PULP WITHOUT HIGH-HOSPITALITY

Info

Publication number
DE69938189D1
DE69938189D1 DE69938189T DE69938189T DE69938189D1 DE 69938189 D1 DE69938189 D1 DE 69938189D1 DE 69938189 T DE69938189 T DE 69938189T DE 69938189 T DE69938189 T DE 69938189T DE 69938189 D1 DE69938189 D1 DE 69938189D1
Authority
DE
Germany
Prior art keywords
ozone
hospitality
medium
pulp
consistent pulp
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 - Lifetime
Application number
DE69938189T
Other languages
German (de)
Other versions
DE69938189T2 (en
Inventor
Vos Rolf De
Panu Tikka
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.)
Arbozon Ltd Oy
Original Assignee
Arbozon Ltd Oy
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 Arbozon Ltd Oy filed Critical Arbozon Ltd Oy
Publication of DE69938189D1 publication Critical patent/DE69938189D1/en
Application granted granted Critical
Publication of DE69938189T2 publication Critical patent/DE69938189T2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • D21C9/147—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications
    • D21C9/153—Bleaching ; Apparatus therefor with oxygen or its allotropic modifications with ozone

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A method for bleaching medium consistency pulp with an ozone-containing gas is disclosed. The highly concentrated ozone-carrying stream is introduced into the pulp stream without mechanical mixing, or accompanied by mixing of moderate intensity. Thus, advance is taken by the rapid reaction of ozone in plug-flow conditions without the use of fiber-destroying shear forces.
DE69938189T 1998-08-24 1999-08-24 OZONE BLEACHES OF A MEDIUM CONSISTENT PULP WITHOUT HIGH-HERMERICITY Expired - Lifetime DE69938189T2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI981808 1998-08-24
FI981808A FI981808A (en) 1998-08-24 1998-08-24 Method for bleaching pulp
PCT/FI1999/000696 WO2000011262A1 (en) 1998-08-24 1999-08-24 Bleaching of medium consistency pulp with ozone without high shear mixing

Publications (2)

Publication Number Publication Date
DE69938189D1 true DE69938189D1 (en) 2008-04-03
DE69938189T2 DE69938189T2 (en) 2009-02-12

Family

ID=8552347

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69938189T Expired - Lifetime DE69938189T2 (en) 1998-08-24 1999-08-24 OZONE BLEACHES OF A MEDIUM CONSISTENT PULP WITHOUT HIGH-HERMERICITY

Country Status (12)

Country Link
EP (1) EP1115946B1 (en)
JP (1) JP4888749B2 (en)
AT (1) ATE386836T1 (en)
AU (1) AU753807B2 (en)
BR (1) BR9913123B1 (en)
CA (1) CA2341490C (en)
DE (1) DE69938189T2 (en)
ES (1) ES2303383T3 (en)
FI (1) FI981808A (en)
ID (1) ID28478A (en)
PT (1) PT1115946E (en)
WO (1) WO2000011262A1 (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH073039B2 (en) * 1986-06-02 1995-01-18 三菱製紙株式会社 Pulp bleaching equipment
FI89516B (en) * 1989-05-10 1993-06-30 Ahlstroem Oy Foerfarande Foer blekning av cellulosamassa med Otson
AU636173B2 (en) * 1989-10-30 1993-04-22 Lenzing Aktiengesellschaft Method for the chlorine-free bleaching of pulps
US5411633A (en) * 1991-04-30 1995-05-02 Kamyr, Inc. Medium consistency pulp ozone bleaching
US5372679A (en) * 1992-06-08 1994-12-13 Air Products And Chemicals, Inc. Reactor system for treating cellulosic pulp at a constant upward flow velocity
JPH0633390A (en) * 1992-07-08 1994-02-08 Sumitomo Heavy Ind Ltd Method for bleaching pulp with ozone
CA2132165A1 (en) * 1993-09-21 1995-03-22 Lewis D. Shackford Method for rapid ozone bleaching of wood pulp
JP3309332B2 (en) * 1994-04-04 2002-07-29 住友重機械工業株式会社 Pulp bleaching method
SE9502339D0 (en) * 1995-06-28 1995-06-28 Jan Arlemark Gas phase ozone generation device
JPH1121778A (en) * 1997-07-08 1999-01-26 Mitsubishi Paper Mills Ltd Bleaching of pulp at medium concentration with ozone
FR2768442B1 (en) * 1997-09-15 1999-10-15 Air Liquide PROCESS FOR BLEACHING A PULP WITH OZONE AND CHLORINE DIOXIDE

Also Published As

Publication number Publication date
EP1115946B1 (en) 2008-02-20
FI981808A (en) 2000-02-25
AU5376099A (en) 2000-03-14
BR9913123B1 (en) 2011-02-08
WO2000011262A1 (en) 2000-03-02
CA2341490C (en) 2009-10-13
EP1115946A1 (en) 2001-07-18
BR9913123A (en) 2001-09-25
ES2303383T3 (en) 2008-08-01
ATE386836T1 (en) 2008-03-15
ID28478A (en) 2001-05-31
PT1115946E (en) 2008-05-21
DE69938189T2 (en) 2009-02-12
JP2002523641A (en) 2002-07-30
FI981808A0 (en) 1998-08-24
AU753807B2 (en) 2002-10-31
CA2341490A1 (en) 2000-03-02
JP4888749B2 (en) 2012-02-29

Similar Documents

Publication Publication Date Title
PT1053209E (en) PROCESS FOR THE PREPARATION OF AN AQUEOUS SOLUTION OF HYDROGEN PEROXIDE DIRECTLY FROM HYDROGEN AND OXYGEN AND A DEVICE THAT ALLOWS ITS PERFORMANCE
UA27098A1 (en) Multi-stage method for cellulose bleaching
BR9206013A (en) Process for delignification of material containing lignocellulose, bleaching and wastewater treatment through laccases with improved efficiency.
DE3574486D1 (en) METHOD FOR DELIGNIFYING AND BLEACHING CELLULAR.
FI922279A0 (en) TVAOSTEGSREAKTOR FOER BLEKNING AV MASSA.
ID21642A (en) PULP PRODUCTION METHOD USING SINGLE STAGE COOKING WITH FORMATIC ACID AND WASHING WITH PERFORMAT ACID
DE69938189D1 (en) OZONE BLEACHES OF A MEDIUM-CONSISTENT PULP WITHOUT HIGH-HOSPITALITY
ES536713A0 (en) PROCEDURE FOR BLEACHING CHEMICAL BINS
SE8904404L (en) SAVE TO PASTE
ATE210219T1 (en) METHOD FOR PRODUCING PAPER PUSH
FI971922A (en) Method for recovering cellulose
SE0002930D0 (en) Bleaching of pulp
SE8605510D0 (en) KEEP WASHING THE PASS
SE9402726D0 (en) Ways of mass bleaching
SE9503694D0 (en) Bleaching of pulp
KR960010679A (en) How to Bleach Alkyl Polyglycosides
BR9407976A (en) Process for bleaching a chemical pulp
SE8700313L (en) PROCEDURE FOR WHEATING OF MECHANICAL MASSES
SE8800987L (en) SETTING ON CHEMICAL TREATMENT
KR900012836A (en) Method for decomposing hypochlorite in chlorate solution
EP0607448A4 (en) Process for producing thiourea dioxide and bleaching of papermaking pulp with thiourea dioxide produced thereby.
DK0881326T3 (en) Process for producing bleached special cellulose pulp
KR890002492A (en) Pulp beating method
BR9801812A (en) Process for the preparation of bleached wood pulp
SE9303927L (en) Process for producing pulp / paper in the presence of a noble gas

Legal Events

Date Code Title Description
8364 No opposition during term of opposition