ES2049165B1 - Procedimiento para pre-blanquear o deslignificar pasta kraft empleando oxigeno. - Google Patents

Procedimiento para pre-blanquear o deslignificar pasta kraft empleando oxigeno.

Info

Publication number
ES2049165B1
ES2049165B1 ES9200256A ES9200256A ES2049165B1 ES 2049165 B1 ES2049165 B1 ES 2049165B1 ES 9200256 A ES9200256 A ES 9200256A ES 9200256 A ES9200256 A ES 9200256A ES 2049165 B1 ES2049165 B1 ES 2049165B1
Authority
ES
Spain
Prior art keywords
lignification
oxygen
whitening
procedure
kraft
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 - Fee Related
Application number
ES9200256A
Other languages
English (en)
Other versions
ES2049165A1 (es
Inventor
Jorge Luiz Coledette
Dos Campos Ana Sabina Santos
Jose Livio Gomide
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.)
Whites Martins Gases Ind S A
Original Assignee
Whites Martins Gases Ind S A
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
Priority claimed from BR9003954A external-priority patent/BR9003954A/pt
Application filed by Whites Martins Gases Ind S A filed Critical Whites Martins Gases Ind S A
Priority to ES9200256A priority Critical patent/ES2049165B1/es
Publication of ES2049165A1 publication Critical patent/ES2049165A1/es
Application granted granted Critical
Publication of ES2049165B1 publication Critical patent/ES2049165B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Paper (AREA)

Abstract

PROCEDIMIENTO PARA PRE-BLANQUEAR O DESLIGNIFICAR PASTA KRAFT EMPLEANDO OXIGENO. CONSISTE EN PRE-BLANQUEAR O DESLIGNIFICAR, CON OXIGENO, UNA PASTA KRAFT DE EUCALIPTO QUE TIENE CONSISTENCIA MEDIA, EMPLEANDO LIQUIDO BLANCO SIN OXIDAR COMO FUENTE ALCALI, A UNA DOSIFICACION DE ALCALI DE 1,2 A 2,4% DE NAOH Y UNA SULFURACION DE 0 A 55%, SIN AFECTAR ADVERSAMENTE AL GRADO DE DESLIGNIFICACION NI A LA SELECTIVIDAD DEL PROCESO. LA INVENCION ES APLICABLE A LA FABRICACION DE PAPEL A BASE DE PASTA PAPELERA KRAFT.
ES9200256A 1990-08-10 1992-02-07 Procedimiento para pre-blanquear o deslignificar pasta kraft empleando oxigeno. Expired - Fee Related ES2049165B1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9200256A ES2049165B1 (es) 1990-08-10 1992-02-07 Procedimiento para pre-blanquear o deslignificar pasta kraft empleando oxigeno.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR9003954A BR9003954A (pt) 1990-08-10 1990-08-10 Processo de pre-branqueamento ou deslignificacao com oxigenio de polpa kraft
ES9200256A ES2049165B1 (es) 1990-08-10 1992-02-07 Procedimiento para pre-blanquear o deslignificar pasta kraft empleando oxigeno.

Publications (2)

Publication Number Publication Date
ES2049165A1 ES2049165A1 (es) 1994-04-01
ES2049165B1 true ES2049165B1 (es) 1994-10-16

Family

ID=25664406

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9200256A Expired - Fee Related ES2049165B1 (es) 1990-08-10 1992-02-07 Procedimiento para pre-blanquear o deslignificar pasta kraft empleando oxigeno.

Country Status (1)

Country Link
ES (1) ES2049165B1 (es)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1106842A (en) * 1965-01-25 1968-03-20 Electric Reduction Co Manufacture of cellulosic pulp
FR2457339A1 (fr) * 1979-05-25 1980-12-19 Interox Procede pour la delignification et le blanchiment de pates cellulosiques chimiques et semi-chimiques

Also Published As

Publication number Publication date
ES2049165A1 (es) 1994-04-01

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Legal Events

Date Code Title Description
FD2A Announcement of lapse in spain

Effective date: 20180806