Results 191 to 200 of about 35,839 (230)
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Air pollution control in kraft pulp mills
American Industrial Hygiene Association Journal, 1978A patented gas scrubbing process, whereby the emissions of malodorous reduced sulphur compounds are effectively and economically reduced, is described. Stack gases are scrubbed with an alkaline suspension of activated carbon. Reduced sulphur compounds as well as sulphur oxides are converted to sodium salts which are subsequently recovered and utilized ...
S P, Bhatia +3 more
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Trend of Bleaching In Kraft Pulp
JAPAN TAPPI JOURNAL, 2009古くから，クラフトパルプの漂白は，塩素，次亜塩素酸塩，二酸化塩素の塩素系薬品を使って行なわれてきた。しかしながら，1980年代の北欧において，バルト海の汚染問題を契機に塩素漂白排水中の有機塩素化合物の環境影響が議論され，1990年代からは多くの国々で塩素漂白が中止され，ECF（Elementary Chlorine Free）漂白法への転換が進んだ。本報告では，クラフトパルプ用漂白剤をその脱リグニン機構に基づいて分類した上で，漂白剤の変遷という観点から，1960年代から今日に至るまでのクラフトパルプ漂白の変遷について述べる。
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The Role of Hemicelluloses in the Hornification of Bleached Kraft Pulps
Holzforschung, 1997During recycling of chemical pulps, deterioration of pulp properties occurs due to hornification. This phenomenon is caused by irreversible structural changes taking place during drying. In this work, the role of pulp hemicelluloses in the hornification process of kraft pulps produced by different cooking and bleaching methods was investigated.
Buchert, Johanna +3 more
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Exergy and Pinch Analyses of Kraft Pulp Mill
1993To locate areas with inefficient use of energy in kraft pulp mill, specific methods using exergy analysis and pinch technology have been developed and utilized. A static and modular simulation model has been developed to perform exergy analysis of every area of a mill.
Lombardo, G. +3 more
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Enzymes in bleaching of kraft pulp: Dissertation
1992Cellulose pulp produced by the kraft pulping process is the predominant raw material for production of paper. Although most of the wood lignin is removed during kraft pulping the residual brown coloured lignin must be removed and the brightness of the pulp increased in a multistage bleaching processes prior to paper production.
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An Example of Planning for Pollution Control in Kraft Pulping
Journal of the Air Pollution Control Association, 1966Two factors have contributed to the preparation of this paper. The first stemmed from Morton Sterling’s remarks in his address to the Houston Meeting. Therein he suggested the value of industry making public the progress made in overcoming pollution problems.
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Production of high yield bleached hardwood kraft pulp: Breaking the kraft pulp yield barrier
TAPPI Journal, 2011A modified kraft pulping process has been developed that successfully breaks the traditional hardwood kraft pulp yield barrier. The process produces fully bleached, high brightness hardwood kraft pulp with a yield of greater than 53% on wood. Details of the development and processing steps, along with various recovery cycle impacts, are discussed.
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Kraft pulping with sulfide pretreatment
Nordic Pulp & Paper Research Journal, 2000Leelo Olm, Disa Tormund
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