ZA92375B - Medium consistency pulp ozone bleaching. - Google Patents

Medium consistency pulp ozone bleaching.

Info

Publication number
ZA92375B
ZA92375B ZA92375A ZA92375A ZA92375B ZA 92375 B ZA92375 B ZA 92375B ZA 92375 A ZA92375 A ZA 92375A ZA 92375 A ZA92375 A ZA 92375A ZA 92375 B ZA92375 B ZA 92375B
Authority
ZA
South Africa
Prior art keywords
pulp
ozone
gas
vessel
medium consistency
Prior art date
Application number
ZA92375A
Other languages
English (en)
Inventor
Joseph R Phillips
Brian F Greenwood
Erwin Funk
Stephen Dunn
Original Assignee
Kamyr Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=24784063&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA92375(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Kamyr Inc filed Critical Kamyr Inc
Publication of ZA92375B publication Critical patent/ZA92375B/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
    • D21C9/147—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)
  • External Artificial Organs (AREA)
  • Saccharide Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
ZA92375A 1991-04-30 1992-01-20 Medium consistency pulp ozone bleaching. ZA92375B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/693,287 US5411633A (en) 1991-04-30 1991-04-30 Medium consistency pulp ozone bleaching

Publications (1)

Publication Number Publication Date
ZA92375B true ZA92375B (en) 1993-04-15

Family

ID=24784063

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA92375A ZA92375B (en) 1991-04-30 1992-01-20 Medium consistency pulp ozone bleaching.

Country Status (11)

Country Link
US (1) US5411633A (de)
EP (1) EP0511433B1 (de)
JP (1) JPH05209387A (de)
AT (1) ATE120816T1 (de)
AU (1) AU644712B2 (de)
BR (1) BR9200083A (de)
CA (1) CA2057644C (de)
DE (1) DE69108712T2 (de)
FI (1) FI921716A (de)
NO (1) NO920130L (de)
ZA (1) ZA92375B (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI925558A (fi) * 1992-04-22 1993-10-23 Ahlstroem Oy Foerfarande och anordning foer blekning av massa
CA2078276C (en) * 1992-09-15 2004-05-25 Derek Hornsey Recovery of oxygen-rich gas from ozone bleaching processes
US5364505A (en) * 1992-12-07 1994-11-15 Kamyr, Inc. Pressurized ozone pulp delignification reactor and a compressor for supplying ozone to the reactor
US6340409B1 (en) * 1993-04-29 2002-01-22 Lewis Donald Shackford Method for multistage bleaching using gaseous reagent in the first stage with controlled gas release
AT402077B (de) * 1995-03-10 1997-01-27 Andritz Patentverwaltung Verfahren und vorrichtung zur behandlung, insbesondere bleichen, von faserstoff
US5656130A (en) * 1995-04-28 1997-08-12 Union Camp Holding, Inc. Ambient temperature pulp bleaching with peroxyacid salts
US6051109A (en) * 1995-10-27 2000-04-18 Andritz-Patentverwaltungs-Gesellschaft M.B.H. Apparatus for distributing fluffed pulp into a static bed reactor
US5851350A (en) * 1995-12-27 1998-12-22 A. Ahlstrom Corporation Method and apparatus for pumping cellulose pulp
US6174409B1 (en) 1997-09-19 2001-01-16 American Air Liquide Inc. Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process
FI981808A (fi) * 1998-08-24 2000-02-25 Crs Reactor Engineering Uk Ltd Menetelmä massan valkaisemiseksi
SE9803474L (sv) * 1998-10-08 2000-04-09 Valmet Fibertech Ab Syrgasblekning av massa
FR2845682B1 (fr) * 2002-10-10 2004-11-19 Air Liquide Procede de reduction des boues d'un traitement biologique de l'eau mettant en oeuvre de l'ozone
US9855518B2 (en) 2013-12-27 2018-01-02 ClearCove Systems, Inc. Method and apparatus for a vertical lift decanter system in a water treatment system
US9744482B2 (en) 2013-12-27 2017-08-29 ClearCove Systems, Inc. Screen decanter for screening solids from waste water
US10190710B2 (en) 2013-12-27 2019-01-29 ClearCove Systems, Inc. Foldable drain pipe for a decanter in a water treatment system
US9782696B2 (en) * 2013-12-27 2017-10-10 ClearCove Systems, Inc. Method for maximizing uniform effluent flow through a waste water treatment system
US9643106B2 (en) 2013-12-27 2017-05-09 ClearCove Systems, Inc. Screen decanter for removing solids from wastewater
EP3712323A4 (de) * 2017-12-20 2020-11-11 Unicharm Corporation Verfahren zur herstellung von recycelten zellstofffasern

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486286A (en) * 1982-09-28 1984-12-04 Nerken Research Corp. Method of depositing a carbon film on a substrate and products obtained thereby
FR2620744A1 (fr) * 1987-09-17 1989-03-24 Degremont Procede de traitement par l'ozone de materiaux ligno-cellulosiques, notamment de pates a papier et reacteur pour la mise en oeuvre de ce procede
FI89516B (fi) * 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

Also Published As

Publication number Publication date
AU644712B2 (en) 1993-12-16
US5411633A (en) 1995-05-02
DE69108712T2 (de) 1995-08-17
EP0511433B1 (de) 1995-04-05
CA2057644F (en) 1992-10-31
ATE120816T1 (de) 1995-04-15
DE69108712D1 (de) 1995-05-11
AU1004892A (en) 1992-11-05
JPH05209387A (ja) 1993-08-20
BR9200083A (pt) 1992-12-01
CA2057644A1 (en) 1992-10-31
NO920130L (no) 1992-11-02
CA2057644C (en) 1996-08-06
FI921716A (fi) 1992-10-31
FI921716A0 (fi) 1992-04-16
EP0511433A1 (de) 1992-11-04
NO920130D0 (no) 1992-01-09

Similar Documents

Publication Publication Date Title
CA2057644C (en) Medium consistency pulp ozone bleaching
CA2102899A1 (en) Ozone bleaching process
AU1700092A (en) Two stage pulp bleaching reactor
US4058433A (en) Conversion of sulfur in blank liquor to eliminate odorous emissions and facilitate the collection of sulfate soaps
ATA292789A (de) Verfahren zum bleichen von cellulosehaeltigen materialien sowie anlage zur durchfuehrung des verfahrens
JPS56116701A (en) Pretreatment of cellulosic material
CA2067844A1 (en) Process for bleaching cellulosic material and plant for carrying out the process
JPS56136696A (en) Method and apparatus for water treatment
JPS5665690A (en) Control device of anaerobic digestion vessel
CS154592A3 (en) Pneumatic flotation apparatus
SE9402542D0 (sv) Förfarande och anordning vid blekning med trycksatt peroxid
AU753807B2 (en) Bleaching of medium consistency pulp with ozone without high shear mixing
JPS61201094A (ja) セルロ−スパルプの処理方法
AU1317292A (en) Medium consistency ozone bleaching
SE9600575L (sv) Förfarande för blekning av massa
JPS57105294A (en) Method and apparatus for aerobic digestion of sludge
ES2103511T3 (es) Procedimiento y dispositivo para la obtencion de un extracto proteinico concentrado a partir del liquido de estiercol.
ES8707294A1 (es) Procedimiento para obtener una mezcla de alcohol y agua a partir de un material de partida con contenido de sustancias solidas