Search for dissertations about: "Kraft cooking"
Showing result 11 - 15 of 54 swedish dissertations containing the words Kraft cooking.
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11. The link between kraft cooking and bleaching : influence on ECF bleachabiblity and bleaching effluent parameters
Abstract : The link between kraft cooking and bleaching was investigated, with the focus on how cooking kappa number, cooking conditions and pre-bleaching stages influence ECF bleachability and environmental parameters in the bleaching effluent. In one part of the study standard cooking conditions were used to produce birch and spruce pulps of different kappa numbers and then we studied how the AOX in the ECF bleaching effluent was affected by oxygen delignification, and hot acid stages. READ MORE
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12. On the Course of Kraft Cooking - The impact of ionic strength
Abstract : Kraft pulping is the dominant process currently used to produce chemical pulps, and has been applied for more than 130 years. A large number of studies have been conducted to gain a better understanding of the delignification kinetics as well as the reactions of the wood components being dissolved during the cooking process. READ MORE
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13. Aspects of extended impregnation kraft cooking for high-yield pulping of hardwood
Abstract : The long-term trend regarding wood is an increase in price. Because wood contributes to a large part of production costs, the efficient utilisation of wood is greatly desired to reduce production costs for kraft pulp producers. During the 1990s, the development of improved modified kraft cooking began, which led to higher yields. READ MORE
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14. Some aspects on extended kraft pulping : the influence of cooking parameters on delignification, bleachability and carbohydrate degradation
Abstract : .... READ MORE
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15. Improved selectivity in kraft cooking through changesin the cooking liquor concentration profiles
Abstract : In the production of bleached kraft pulp, extendeddelignification in the cooking stage is a method of reducingthe load on the receiving waters. A low lignin content (lowkappa number) also means a reduced need for bleachingchemicals. READ MORE