BR9204173A - Processo para obter uma melhor seletividade de deslignificacao de uma polpa durante a deslignificacao de elevada consistencia com oxigenio,e,processo para obter uma melhor seletividade de deslignificacao de uma polpa nao branqueada durante a deslignificacao de elevada consistencia com oxigenio - Google Patents

Processo para obter uma melhor seletividade de deslignificacao de uma polpa durante a deslignificacao de elevada consistencia com oxigenio,e,processo para obter uma melhor seletividade de deslignificacao de uma polpa nao branqueada durante a deslignificacao de elevada consistencia com oxigenio

Info

Publication number: BR9204173A
Authority: BR; Brazil
Prior art keywords: pulp; obtaining; consistency; delignification; draignification
Prior art date: 1991-10-29

Application number

BR929204173A

Other languages

English (en)

Portuguese (pt)

Inventor

William H Friend

Stuart T Terrett

Spencer W Eachus

Bruce F Griggs

Original Assignee

Union Camp Patent Holding

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.)

1991-10-29

Filing date

1992-10-27

Publication date

1993-05-04

1992-10-27 Application filed by Union Camp Patent Holding filed Critical Union Camp Patent Holding

1993-05-04 Publication of BR9204173A publication Critical patent/BR9204173A/pt

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
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
- 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
- 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

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Paper (AREA)
Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Television Systems (AREA)
Gas Separation By Absorption (AREA)
Detergent Compositions (AREA)
Cleaning By Liquid Or Steam (AREA)
Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

BR929204173A 1991-10-29 1992-10-27 Processo para obter uma melhor seletividade de deslignificacao de uma polpa durante a deslignificacao de elevada consistencia com oxigenio,e,processo para obter uma melhor seletividade de deslignificacao de uma polpa nao branqueada durante a deslignificacao de elevada consistencia com oxigenio BR9204173A (pt)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US78418491A	1991-10-29	1991-10-29

Publications (1)

Publication Number	Publication Date
BR9204173A true BR9204173A (pt)	1993-05-04

Family

ID=25131607

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR929204173A BR9204173A (pt)	1991-10-29	1992-10-27	Processo para obter uma melhor seletividade de deslignificacao de uma polpa durante a deslignificacao de elevada consistencia com oxigenio,e,processo para obter uma melhor seletividade de deslignificacao de uma polpa nao branqueada durante a deslignificacao de elevada consistencia com oxigenio

Country Status (14)

Country	Link
EP (1)	EP0540091B1 (fi)
JP (1)	JPH05195466A (fi)
KR (1)	KR960006125B1 (fi)
CN (1)	CN1080343A (fi)
AT (1)	ATE147808T1 (fi)
AU (1)	AU647973B2 (fi)
BR (1)	BR9204173A (fi)
CA (1)	CA2081398C (fi)
DE (1)	DE69216757D1 (fi)
FI (1)	FI924751A (fi)
NO (1)	NO924080L (fi)
NZ (1)	NZ244837A (fi)
SE (1)	SE9203113L (fi)
ZA (1)	ZA928294B (fi)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AU6641498A (en)	1997-03-07	1998-09-22	Akzo Nobel N.V.	Process for treating wastewater
EP0863113A1 (en) *	1997-03-07	1998-09-09	Akzo Nobel N.V.	Process for treating wastewater
FI122241B (fi)	2007-06-15	2011-10-31	Andritz Oy	Menetelmä massan pesun yhteydessä sellutehtaalla
EP2910678B1 (en)	2010-06-10	2017-07-26	Packaging Corporation Of America	Method of manufacturing pulp for corrugated medium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BR8605554A (pt) *	1985-02-14	1987-04-22	Edward Francis Elton	Processo para producao de papel e aparelho para a deslignificacao alcalina de materiais fibrosos ligno-celulosicos
US5173153A (en) *	1991-01-03	1992-12-22	Union Camp Patent Holding, Inc.	Process for enhanced oxygen delignification using high consistency and a split alkali addition
US5085734A (en) *	1989-02-15	1992-02-04	Union Camp Patent Holding, Inc.	Methods of high consistency oxygen delignification using a low consistency alkali pretreatment
JPH02289194A (ja) *	1989-04-20	1990-11-29	Mitsubishi Paper Mills Ltd	リグノセルロース物質の酸素漂白法

1992
- 1992-10-20 FI FI924751A patent/FI924751A/fi not_active Application Discontinuation
- 1992-10-21 NO NO92924080A patent/NO924080L/no unknown
- 1992-10-21 NZ NZ244837A patent/NZ244837A/en unknown
- 1992-10-21 AU AU27168/92A patent/AU647973B2/en not_active Ceased
- 1992-10-22 EP EP92203241A patent/EP0540091B1/en not_active Expired - Lifetime
- 1992-10-22 AT AT92203241T patent/ATE147808T1/de not_active IP Right Cessation
- 1992-10-22 DE DE69216757T patent/DE69216757D1/de not_active Expired - Lifetime
- 1992-10-23 SE SE9203113A patent/SE9203113L/ not_active Application Discontinuation
- 1992-10-26 CA CA002081398A patent/CA2081398C/en not_active Expired - Fee Related
- 1992-10-27 BR BR929204173A patent/BR9204173A/pt not_active Application Discontinuation
- 1992-10-27 ZA ZA928294A patent/ZA928294B/xx unknown
- 1992-10-28 KR KR1019920019881A patent/KR960006125B1/ko active IP Right Grant
- 1992-10-29 JP JP4291469A patent/JPH05195466A/ja active Pending
- 1992-10-29 CN CN92113767A patent/CN1080343A/zh active Pending

Also Published As

Publication number	Publication date
ATE147808T1 (de)	1997-02-15
SE9203113D0 (sv)	1992-10-23
AU647973B2 (en)	1994-03-31
ZA928294B (en)	1993-05-18
CA2081398C (en)	1997-03-25
FI924751A0 (fi)	1992-10-20
AU2716892A (en)	1993-05-20
JPH05195466A (ja)	1993-08-03
CA2081398A1 (en)	1993-04-30
FI924751A (fi)	1993-04-30
KR930008238A (ko)	1993-05-21
SE9203113L (sv)	1993-04-30
DE69216757D1 (de)	1997-02-27
EP0540091B1 (en)	1997-01-15
NO924080D0 (no)	1992-10-21
KR960006125B1 (ko)	1996-05-09
NZ244837A (en)	1994-10-26
EP0540091A1 (en)	1993-05-05
NO924080L (no)	1993-04-30
CN1080343A (zh)	1994-01-05

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Legal Events

Date	Code	Title
1995-06-06	EE	Request for examination
1999-06-08	FB36	Technical and formal requirements: requirement - article 36 of industrial property law
2000-04-25	FA8	Dismissal: dismissal - article 36, par. 1 of industrial property law