BR0201258A - Process of pulp bleaching in acid medium - Google Patents

Process of pulp bleaching in acid medium

Info

Publication number
BR0201258A
BR0201258A BR0201258A BR0201258A BR0201258A BR 0201258 A BR0201258 A BR 0201258A BR 0201258 A BR0201258 A BR 0201258A BR 0201258 A BR0201258 A BR 0201258A BR 0201258 A BR0201258 A BR 0201258A
Authority
BR
Brazil
Prior art keywords
acid medium
pulp bleaching
pulp
stage
ahot
Prior art date
Application number
BR0201258A
Other languages
Portuguese (pt)
Inventor
Marcelo Moreira Da Costa
Maria Jose De Oliveira Fonseca
Jorge Luiz Colodette
Original Assignee
Celulose Nipo Brasileira S A C
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 Celulose Nipo Brasileira S A C filed Critical Celulose Nipo Brasileira S A C
Priority to BR0201258A priority Critical patent/BR0201258A/en
Publication of BR0201258A publication Critical patent/BR0201258A/en

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Abstract

"PROCESSO DE BRANQUEAMENTO DE POLPA DE CELULOSE EM MEIO áCIDO". Caracterizado pelo fato de utilizar uma seq³ência Ahot tD(Zn)D onde: Ahot é o estágio ácido a quente, D é o estágio de dioxidação da polpa e (Zn) é o estágio de ozonólise seguida de neutralização da polpa sem lavagem entre os referidos estágios, todos os estágios com pH entre 2,0 e 7,0."CELLULOSE PULP WHITE PURPOSE PROCESS". Characterized by the use of a sequence Ahot tD (Zn) D where: Ahot is the hot acid stage, D is the pulp oxidation stage and (Zn) is the ozonolysis stage followed by non-washing pulp neutralization among the above. stages, all stages with pH between 2.0 and 7.0.

BR0201258A 2002-04-09 2002-04-09 Process of pulp bleaching in acid medium BR0201258A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR0201258A BR0201258A (en) 2002-04-09 2002-04-09 Process of pulp bleaching in acid medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BR0201258A BR0201258A (en) 2002-04-09 2002-04-09 Process of pulp bleaching in acid medium

Publications (1)

Publication Number Publication Date
BR0201258A true BR0201258A (en) 2004-02-03

Family

ID=31192874

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0201258A BR0201258A (en) 2002-04-09 2002-04-09 Process of pulp bleaching in acid medium

Country Status (1)

Country Link
BR (1) BR0201258A (en)

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Legal Events

Date Code Title Description
B06F Technical and formal requirements: requirement - article 34 of industrial property law

Free format text: E EM CONSONANCIA COM A RESOLUCAO NO 34 DO CGEN.

B07A Technical examination (opinion): publication of technical examination (opinion)
B09B Decision: refusal
B09B Decision: refusal

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.