BR9809423A - Processo quìmico de deslignificação da madeira utilizando como reagente ativo bissulfito de magnésio e amÈnio - Google Patents

Processo quìmico de deslignificação da madeira utilizando como reagente ativo bissulfito de magnésio e amÈnio

Info

Publication number
BR9809423A
BR9809423A BR9809423-8A BR9809423A BR9809423A BR 9809423 A BR9809423 A BR 9809423A BR 9809423 A BR9809423 A BR 9809423A BR 9809423 A BR9809423 A BR 9809423A
Authority
BR
Brazil
Prior art keywords
magnesium
acid
cooking acid
present innovation
ammonium
Prior art date
Application number
BR9809423-8A
Other languages
English (en)
Inventor
Joao Manuel Almeida O Baptista
Original Assignee
Joao Manuel Almeida Oliveira B
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 Joao Manuel Almeida Oliveira B filed Critical Joao Manuel Almeida Oliveira B
Publication of BR9809423A publication Critical patent/BR9809423A/pt

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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
    • D21C3/14—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites ammonium bisulfite
    • 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
    • D21C3/00—Pulping cellulose-containing materials
    • D21C3/04—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides
    • D21C3/06—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites
    • D21C3/10—Pulping cellulose-containing materials with acids, acid salts or acid anhydrides sulfur dioxide; sulfurous acid; bisulfites sulfites magnesium bisulfite

Landscapes

  • Paper (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)

Abstract

Patente de Invenção:<B>"PROCESSO QUìMICO DE DESLIGNIFICAçãO DA MADEIRA UTILIZANDO COMO REAGENTE ATIVO BISSULFITO DE MAGNéSIO E AMÈNIO"<D>. A presente invenção consiste no uso de uma solução reagente (áciso de cozimento final), onde bissulfito de magnésio e amónio é o produto químico ativo. Este novo processo é particularmente útil naquelas plantas industriais, onde a polpa de celulose é obtida pelo processo ácido de magnésio. A presente invenção consiste na intodução de íons de amónio no ácido de cozimento usado em tais plantas (ácido de cozimento inicial). O ácido de cozimento final é obtido pela reação do ácido de cozimento inicial com hidróxido de amónio. Resultados experimentais mostram a superioridade da presente invenção sobre o processo de polpação de bissulfito de ácido de magnésio, que é expressa por: produção de fibras celulósicas com valores de índice físico-mecânicos mais elevados; diminuição na procentagem de mateiral não-cozido; aumento no rendimento de madeira e menor impacto ambiental.
BR9809423-8A 1997-04-28 1998-04-20 Processo quìmico de deslignificação da madeira utilizando como reagente ativo bissulfito de magnésio e amÈnio BR9809423A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT101999A PT101999B (pt) 1997-04-28 1997-04-28 Processo quimico de deslenhificacao da madeira utilizando como reagente activo o composto - bissulfito duplo de magnesio e amonio
PCT/PT1998/000002 WO1998049390A1 (en) 1997-04-28 1998-04-20 A wood delignification chemical process using ammonium magnesium bisulphite as the active reagent

Publications (1)

Publication Number Publication Date
BR9809423A true BR9809423A (pt) 2000-06-13

Family

ID=20085674

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9809423-8A BR9809423A (pt) 1997-04-28 1998-04-20 Processo quìmico de deslignificação da madeira utilizando como reagente ativo bissulfito de magnésio e amÈnio

Country Status (8)

Country Link
US (1) US20020153108A1 (pt)
EP (1) EP0977918B1 (pt)
AT (1) ATE362010T1 (pt)
AU (1) AU738720B2 (pt)
BR (1) BR9809423A (pt)
DE (1) DE69837755T2 (pt)
PT (1) PT101999B (pt)
WO (1) WO1998049390A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2652193B1 (en) * 2010-12-15 2020-09-16 IP2IPO Innovations Limited Treatment
US11118308B2 (en) 2013-03-15 2021-09-14 Ip2Ipo Innovations Limited Treatment of lignocellulosic biomass with ionic liquid
GB201520453D0 (en) 2015-11-20 2016-01-06 Imp Innovations Ltd Process

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL87584C (pt) * 1952-02-15
DE2445523A1 (de) * 1974-09-24 1976-04-01 Waldhof Aschaffenburg Papier Verfahren zur herstellung von zellstoff
DD151581A3 (de) * 1976-11-11 1981-10-28 Kurt Doeink Verfahren zum aufschluss lignozellulsischen materials nach dem bisulfitverfahren
JPS5653295A (en) * 1979-10-04 1981-05-12 Kogyo Gijutsuin Pulping method of waste rubber material
US4634499A (en) * 1983-05-02 1987-01-06 The Procter & Gamble Company Sulfite process for making pulp having a tactile softness from hardwood chips
SU1359387A1 (ru) * 1985-09-25 1987-12-15 Центральный научно-исследовательский институт бумаги Волокниста масса дл изготовлени гофрированной бумаги
SU1696631A1 (ru) * 1989-06-26 1991-12-07 Сибирский научно-исследовательский институт целлюлозы и картона Состав дл обработки древесной массы

Also Published As

Publication number Publication date
PT101999A (pt) 1998-11-30
PT101999B (pt) 2003-09-30
EP0977918A1 (en) 2000-02-09
US20020153108A1 (en) 2002-10-24
WO1998049390A1 (en) 1998-11-05
AU6858698A (en) 1998-11-24
DE69837755D1 (de) 2007-06-21
DE69837755T2 (de) 2008-01-31
ATE362010T1 (de) 2007-06-15
AU738720B2 (en) 2001-09-27
EP0977918B1 (en) 2007-05-09

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Legal Events

Date Code Title Description
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 20/04/1998, OBSERVADAS AS CONDICOES LEGAIS.

B24C Patent annual fee: request for for restoration

Free format text: REFERENTE A 12A, 13A E 14A ANUIDADE(S).

B24H Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
B24F Patent annual fee: publication cancelled

Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2258 DE 15/04/2014 POR TER SIDO INDEVIDA.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE AS 13A E 14A ANUIDADES.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2606 DE 15-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.