Results 171 to 180 of about 2,158 (213)
Impact of dissolved sodium salts on kraft cooking reactions [PDF]
hfsg, 2008 Abstract This study examined the effects of inactive ions – ions not reacting with wood – during kraft cooking, which thus far have received modest attention. Six different sodium salts were added to kraft cooking liquors at two different levels of alkalinities. Delignification as well as the formation and degradation of hexenuronic acid
Johannes Bogren +3 more
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Trithiocarbonate boosted kraft cooking for improved yield
Nordic Pulp and Paper Research Journal, 2002The effect of adding of carbon disulphide to a kraft cook has been investigated. Among the results obtained, ail increased yield has been recorded.
Martin Ragnar, Mikael E Lindstrom
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Corrosive environments in modern kraft batch cooking [PDF]
, 2001 Corrosive environments have been studied in three modern Finnish kraft batch digesters during their normal operation. The potentials of a carbon steel, an austenitic stainless steel and a duplex stainless steel have been measured for a long period of time using an on-line digester process and corrosion monitoring system.
Leinonen, Heikki, Lassila, Petri
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Improved modified kraft cooking
Nordic Pulp and Paper Research Journal, 1992Nils Hartler
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Temperature and effective alkali effect on brown pulp kraft cooking [PDF]
Nordic Pulp and Paper Research Journal, 2021 One way to obtain high quality pulp production is to improve selectivity delignification of step, maximize yield. Brown pulp yield and chemical composition were studied, with variation of temperature and effective alkali in Kraft cooking.
Gustavo Ventorim +1 more
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Modeling kraft cooking kinetics of fiber mixes from TMP and unbleached kraft pulps for assessment of old corrugated cardboard delignification [PDF]
Holzforschung, 2018 Kraft cooking kinetics of three different lignocellulosic substrates have been investigated, namely fibers from unbleached kraft pulp (UBKP from Pinus radiata), fibers from softwood unbleached thermomechanical pulp (TMP), and wood chips for TMP ...
Gérard Mortha, Nathalie Marlin
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Structural changes in lignin during kraft cooking
Nordic Pulp and Paper Research Journal, 1988Göbran Gellerstedt +2 more
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Addition of carboxymethylcellulose to the kraft cook
Nordic Pulp & Paper Research Journal, 2004The physical attachment of carboxymethylcellulose (CMC) onto kraft pulps during cooking and the effects of subsequent bleaching in an OD(EOP)DD sequence were investigated.
Per Ekevåg +3 more
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Carbohydrate degradation during softwood kraft cooking – influence on cellulose viscosity, carbohydrate composition and hexenuronic acid content [PDF]
Nordic Pulp and Paper Research Journal, 2008 A kinetic model, including the variables temperature as well as hydroxide ion, sulphide ion and sodium ion concentrations, was fitted to laboratory data from kraft cooking of industrial Norway spruce chips.
Ulf Germgård
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A survey of kraft cooking control models
IFAC Proceedings Volumes, 1980Abstract A survey of general kraft cooking control principles, especially of control models has been done. Basic assumptions, model principles, major and auxiliary variables used as well as updating of models have been considered. A variety of theoretical and experimental models published are described in the text provided with the control ...
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