Evaluation of kraft cooking behaviour for six different softwoods species [PDF]
, 2010 The main goal of this paper is to observe de differences of behaviour between six softwoods species during the kraft cooking sequence, knowing that morphological, physicochemical and hygroscopic characters are different.
Margarido, Marta +6 more
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Kraft Cooking with SAQ® Suitable for ECF Breaching
JAPAN TAPPI JOURNAL, 2003 SAQ® has been used as a cooking additive in many KP mills. This process is known as “Quinone Cooking”. In this paper, some new applications of SAQ®'s functions are proposed when ECF bleaching process is introduced in pulp mills.First, the effect of SAQ®, which decreases bleaching load keeping pulp yield and strength by lowering Kappa number, is ...
openaire +2 more sources
Improved selectivity in kraft cooking through changesin the cooking liquor concentration profiles [PDF]
, 1997 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.
Sjöblom, Krister,
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Factors Affecting Kraft Pulp Yield [PDF]
, 2012 Kraft method, as a chemical pulping method, is commonly used in the worldwide. Pulps producing by using this method have a lower pulp yield compared to semi-chemical and mechanical pulping methods.
Gülsoy, Sezgin Koray
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Impact of extended-impregnation cooking on the xylan structure in Eucalyptus urograndis kraft pulps [PDF]
Compared to conventional kraft cooking, (CK), extended-impregnation kraft cooking (EIC) gives higher yield of cellulose and xylan. In the present study, the amount of xylan and its degree of substitution (DS) with 4-O-methyl glucuronic acid (MeGlcA) and ...
Lindstrom, Mikael E. +4 more
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Extended impregnation kraft cooking of softwood : Effects on reject, yield, pulping uniformity, and physical properties [PDF]
, 2009 Converting wood into paper is a complex process involving many different stages, one of which is pulping. Pulping involves liberating the wood fibres from each other, which can be done either chemically or mechanically.
Karlström, Katarina
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DEVELOPMENT OF A NOVEL EMPIRICAL MODEL TO ESTIMATE THE KRAFT PULP YIELD OF FAST-GROWING EUCALYPTUS
BioResources, 2012 In this study, several kraft pulps were produced by kraft pulping of fast-growing Eucalyptus with a wide range of cooking conditions. The dependences between pulp yields and some pulp properties, namely, kappa number, HexA contents, and cellulose ...
Jing Liu,, Huichao Hu,, Xiaolin Luo,
doaj
Influence of eucalyptus wood quality and the Kraft Conventional and Compact Cooking TM pulping processes on the fiber line performance and pulp properties [PDF]
, 2019 A polpa celulósica é uma matéria prima empregada em diversos segmentos industriais e faz parte do dia-a-dia da sociedade moderna. A produção da mesma é baseada nos chamados processos de polpação, onde o processo kraft é o predominante, respondendo por ...
Figueiredo, Julia de Cristo
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Processing of xylan from hardwood spent cooking liquors [PDF]
, 2008 The paper reports conditions suitable for recovering and processing 4-O-methylglucuronoxylans from birch and eucalyptus spent kraft cooking liquors. The black liquor originating from the initial heating-up phase in birch kraft cooking exhibits a high ...
Jensen, Anna, +3 more
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