MODIFICATION OF A MILL DEopDD SEQUENCE: IMPROVEMENT IN THE D STAGE FOR COMBINATION OF OZONE (Z) AND CHLORINE DIOXIDE (D) ON THE (ZD)EopDD SEQUENCE OF SOFTWOOD KRAFT-OXYGEN PULP

MODIFICATION OF A MILL DEopDD SEQUENCE: IMPROVEMENT IN THE D STAGE FOR COMBINATION OF OZONE (Z) AND CHLORINE DIOXIDE (D) ON THE (ZD)EopDD SEQUENCE OF SOFTWOOD KRAFT-OXYGEN PULP

In this study, the (ZD)EopDD bleaching sequence for a softwood pulp was compared with the conventional ECF reference sequence DEopDD used in the mill. A Pinus radiata kraft-oxygen pulp was treated with a (ZD) stage at 0.3% ozone and 0.5% chlorine dioxide charges. The best result was reached with the...

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Autores principales: MILLAR,H, RUIZ,J, FREER,J., BAEZA,J
Lenguaje:English
Publicado: Sociedad Chilena de Química 2003
Materias:
Kraft pulp
ECF bleaching
ozone
chlorine dioxide
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072003000100006
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spelling oai:scielo:S0717-970720030001000062003-05-15MODIFICATION OF A MILL DEopDD SEQUENCE: IMPROVEMENT IN THE D STAGE FOR COMBINATION OF OZONE (Z) AND CHLORINE DIOXIDE (D) ON THE (ZD)EopDD SEQUENCE OF SOFTWOOD KRAFT-OXYGEN PULPMILLAR,HRUIZ,JFREER,J.BAEZA,J Kraft pulp ECF bleaching ozone chlorine dioxide In this study, the (ZD)EopDD bleaching sequence for a softwood pulp was compared with the conventional ECF reference sequence DEopDD used in the mill. A Pinus radiata kraft-oxygen pulp was treated with a (ZD) stage at 0.3% ozone and 0.5% chlorine dioxide charges. The best result was reached with the (ZD) process when O3 and ClO2 were added sequentially at high consistency. The use of ozone allowed a 43% reduction in the use of chlorine dioxide. With the (ZD)EopDD sequence a 90%ISO brightness bleached pulp was obtained, having acceptable mechanical properties, which are comparable to that generated by the DEopDD sinfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.48 n.1 20032003-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072003000100006en10.4067/S0717-97072003000100006
institution Scielo Chile
collection Scielo Chile
language English
topic Kraft pulp
ECF bleaching
ozone
chlorine dioxide
spellingShingle Kraft pulp
ECF bleaching
ozone
chlorine dioxide
MILLAR,H
RUIZ,J
FREER,J.
BAEZA,J
MODIFICATION OF A MILL DEopDD SEQUENCE: IMPROVEMENT IN THE D STAGE FOR COMBINATION OF OZONE (Z) AND CHLORINE DIOXIDE (D) ON THE (ZD)EopDD SEQUENCE OF SOFTWOOD KRAFT-OXYGEN PULP
description In this study, the (ZD)EopDD bleaching sequence for a softwood pulp was compared with the conventional ECF reference sequence DEopDD used in the mill. A Pinus radiata kraft-oxygen pulp was treated with a (ZD) stage at 0.3% ozone and 0.5% chlorine dioxide charges. The best result was reached with the (ZD) process when O3 and ClO2 were added sequentially at high consistency. The use of ozone allowed a 43% reduction in the use of chlorine dioxide. With the (ZD)EopDD sequence a 90%ISO brightness bleached pulp was obtained, having acceptable mechanical properties, which are comparable to that generated by the DEopDD s
author MILLAR,H
RUIZ,J
FREER,J.
BAEZA,J
author_facet MILLAR,H
RUIZ,J
FREER,J.
BAEZA,J
author_sort MILLAR,H
title MODIFICATION OF A MILL DEopDD SEQUENCE: IMPROVEMENT IN THE D STAGE FOR COMBINATION OF OZONE (Z) AND CHLORINE DIOXIDE (D) ON THE (ZD)EopDD SEQUENCE OF SOFTWOOD KRAFT-OXYGEN PULP
title_short MODIFICATION OF A MILL DEopDD SEQUENCE: IMPROVEMENT IN THE D STAGE FOR COMBINATION OF OZONE (Z) AND CHLORINE DIOXIDE (D) ON THE (ZD)EopDD SEQUENCE OF SOFTWOOD KRAFT-OXYGEN PULP
title_full MODIFICATION OF A MILL DEopDD SEQUENCE: IMPROVEMENT IN THE D STAGE FOR COMBINATION OF OZONE (Z) AND CHLORINE DIOXIDE (D) ON THE (ZD)EopDD SEQUENCE OF SOFTWOOD KRAFT-OXYGEN PULP
title_fullStr MODIFICATION OF A MILL DEopDD SEQUENCE: IMPROVEMENT IN THE D STAGE FOR COMBINATION OF OZONE (Z) AND CHLORINE DIOXIDE (D) ON THE (ZD)EopDD SEQUENCE OF SOFTWOOD KRAFT-OXYGEN PULP
title_full_unstemmed MODIFICATION OF A MILL DEopDD SEQUENCE: IMPROVEMENT IN THE D STAGE FOR COMBINATION OF OZONE (Z) AND CHLORINE DIOXIDE (D) ON THE (ZD)EopDD SEQUENCE OF SOFTWOOD KRAFT-OXYGEN PULP
title_sort modification of a mill deopdd sequence: improvement in the d stage for combination of ozone (z) and chlorine dioxide (d) on the (zd)eopdd sequence of softwood kraft-oxygen pulp
publisher Sociedad Chilena de Química
publishDate 2003
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072003000100006
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AT ruizj modificationofamilldeopddsequenceimprovementinthedstageforcombinationofozonezandchlorinedioxidedonthezdeopddsequenceofsoftwoodkraftoxygenpulp
AT freerj modificationofamilldeopddsequenceimprovementinthedstageforcombinationofozonezandchlorinedioxidedonthezdeopddsequenceofsoftwoodkraftoxygenpulp
AT baezaj modificationofamilldeopddsequenceimprovementinthedstageforcombinationofozonezandchlorinedioxidedonthezdeopddsequenceofsoftwoodkraftoxygenpulp
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