Historical Development of Kraft Pulp Cooking

Ando Kazuhiko

doi:10.2524/jtappij.63.498

Bibliographic Information

Other Title

クラフトパルプ蒸解の変遷

Description

Many digesters in Japan were installed in the 60’s and the 70’s which were called the highly economic growth era. They are around 30 to 40 years old or too old. However many of them are still operating by now. They are getting further old year by year. But we have maintained the high competitiveness of them as taking several maintenances and upgrades. On the other hand, recently, many brand-new large fiberlines have been installed in South America or Southeast Asia. Such competitors will threaten us with higher competitiveness by brand-new equipments. In this report, I introduce a summary of the kraft pulp cooking methods last 40 years which consists of Conventional cooking, MCC, Lo-solids cooking, Compact cooking and so on. New model of digester are made several improvements for the yield, the quality, the maintenance, simplification and so on. On the other hand, AQ and PS were improved well and the new electrolysis polysulphide generator has been developed to raise the concentration of PS recently. We would like to make further improvement for the kraft pulp cooking with the pulp & paper industries, the machinery industries and the chemical industries together.

Journal

JAPAN TAPPI JOURNAL

JAPAN TAPPI JOURNAL 63 (5), 498-506, 2009

JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

Details 詳細情報について

CRID: 1390282681492540800

NII Article ID: 130004492696

DOI: 10.2524/jtappij.63.498

COI: 1:CAS:528:DC%2BD1MXmsVyhsb4%3D

ISSN: 18811000; 0022815X

Text Lang: ja

Data Source

JaLC
Crossref
CiNii Articles

Abstract License Flag: Disallowed

Export

Report a problem