BRPI0603081A - method for removing foreign elements from the process of a kraft bleaching plant - Google Patents

method for removing foreign elements from the process of a kraft bleaching plant

Info

Publication number
BRPI0603081A
BRPI0603081A BRPI0603081-5A BRPI0603081A BRPI0603081A BR PI0603081 A BRPI0603081 A BR PI0603081A BR PI0603081 A BRPI0603081 A BR PI0603081A BR PI0603081 A BRPI0603081 A BR PI0603081A
Authority
BR
Brazil
Prior art keywords
removing foreign
plant
kraft
foreign elements
elements
Prior art date
Application number
BRPI0603081-5A
Other languages
Portuguese (pt)
Inventor
James E Ii Sealey
Kaaren Haynes
Doug Loyd
Roger O Campbell
Kent Robarge
Original Assignee
Weyerhaeuser Co
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 Weyerhaeuser Co filed Critical Weyerhaeuser Co
Publication of BRPI0603081A publication Critical patent/BRPI0603081A/en

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

Landscapes

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

Abstract

"MéTODO PARA A REMOçãO DE ELEMENTOS ESTRANHOS AO PROCESSO DE UMA PLANTA DE BRANQUEAMENTO KRAFT". é apresentado um método para a remoção de elementos estranhos ao processo de uma planta de branqueamento Kraft de produção de polpa de lyocell. No método, o filtrado da planta de branqueamento é passado através de pelo menos um equipamento de limpeza centrífugo. Os elementos estranhos ao processo são reduzidos em pelo menos 20% dos seus níveis originais no filtrado da planta de branqueamento."METHOD FOR REMOVING FOREIGN ELEMENTS IN THE PROCESS OF A KRAFT BLANKING PLANT". A method for removing extraneous elements from a Kraft lyocell pulp production bleaching plant is presented. In the method, the bleach plant filtrate is passed through at least one centrifugal cleaning equipment. Non-process elements are reduced by at least 20% of their original levels in the bleach plant filtrate.

BRPI0603081-5A 2005-06-30 2006-06-21 method for removing foreign elements from the process of a kraft bleaching plant BRPI0603081A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/171,013 US20070000628A1 (en) 2005-06-30 2005-06-30 Method for removal of metals from a bleach plant filtrate stream

Publications (1)

Publication Number Publication Date
BRPI0603081A true BRPI0603081A (en) 2007-03-06

Family

ID=37199131

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0603081-5A BRPI0603081A (en) 2005-06-30 2006-06-21 method for removing foreign elements from the process of a kraft bleaching plant

Country Status (6)

Country Link
US (1) US20070000628A1 (en)
EP (1) EP1739225A2 (en)
AR (1) AR056374A1 (en)
BR (1) BRPI0603081A (en)
CA (1) CA2548970A1 (en)
ZA (1) ZA200605257B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102556121B (en) * 2012-03-12 2015-02-11 大连华锐重工集团股份有限公司 Special wrong vehicle hooking detection device for open wagon

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188260A (en) * 1977-05-05 1980-02-12 Erco Envirotech Ltd. Low effluent pulp mill, bleach plant operation
US5360514A (en) * 1992-02-21 1994-11-01 Kamyr, Inc. Treatment of bleach plant filtrations using a magnesium filter
SE500113C2 (en) * 1992-07-09 1994-04-18 Kamyr Ab Method of bleaching pulp for disposal of released metals
US5374333A (en) * 1992-07-30 1994-12-20 Kamyr, Inc. Method for minimizing pulp mill effluents
US5302246A (en) * 1992-07-30 1994-04-12 Kamyr, Inc. Method of managing liquid steams in a pulp mill
US5401362A (en) * 1993-03-24 1995-03-28 Kamyr, Inc. Control of metals and dissolved organics in the bleach plant
US5509999A (en) * 1993-03-24 1996-04-23 Kamyr, Inc. Treatment of bleach plant effluents
US5639347A (en) * 1993-03-24 1997-06-17 Ahlstrom Machinery Inc. Method of controlling of metals in a bleach plant, using oxidation
US5468396A (en) * 1994-03-16 1995-11-21 Pulp And Paper Research Institute Of Canada Centrifugal cleaning of pulp and paper process liquids
SE504424C2 (en) * 1994-11-04 1997-02-10 Kvaerner Pulping Tech Ways to precipitate transition metals and alkaline earth metals from bleaching liquids by adding alkaline liquid
US5792315A (en) * 1995-02-27 1998-08-11 Eka Chemicals Ab Purifying aqueous effluent from a pulp mill using electro chemical membrane device
US6471727B2 (en) * 1996-08-23 2002-10-29 Weyerhaeuser Company Lyocell fibers, and compositions for making the same
US7364640B2 (en) * 2003-09-08 2008-04-29 Alberta Research Council Inc. Chemimechanical desilication of nonwood plant materials

Also Published As

Publication number Publication date
EP1739225A2 (en) 2007-01-03
US20070000628A1 (en) 2007-01-04
AR056374A1 (en) 2007-10-10
CA2548970A1 (en) 2006-12-30
ZA200605257B (en) 2007-04-25

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AS 4A, 5A E 6A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: NAO APRESENTADA A GUIA DE CUMPRIMENTO DE EXIGENCIA. REFERENTE AS 4A, 5A E 6A ANUIDADES.