Results 191 to 200 of about 28,003 (208)
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Galactoglucomannan stabilization during the initial kraft cooking of Scots pine
Holzforschung, 2010Abstract The behaviour of wood components was studied during kraft cooking of Wiley milled Scots pine (Pinus sylvestris L.) at low temperatures characteristic for the initial phase, but comprising alkali concentrations ranging from 0.31 mol l-1 to 1.55 mol l-1.
Tamminen, Tarja +4 more
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Corrosive environments in modern kraft batch cooking
2001Corrosive 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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Characterization of Eucalyptus heartwood and sapwood pulp after kraft cooking
Journal of the Indian Academy of Wood Science, 2016The hardwood species Eucalyptus citriodora (Myrtaceae) is used as a raw material in paper industry that has a substantial proportion of heartwood. In addition to libriform fibres and fibre tracheids, heartwood has vessels blocked with tyloses and sapwood has live ray and axial parenchyma cells filled with starch.
Rohit Puntambekar +3 more
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Improved modified kraft cooking
Nordic Pulp & Paper Research Journal, 1992Bofeng Mao, Nils Hartler
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Optimization of Quinone Compounds Impregnation in Kraft-quinone Cooking
JAPAN TAPPI JOURNAL, 2009アントラキノン系蒸解助剤SAQ®を用いたクラフト蒸解において，より大きくSAQの効果を発現させるためには，原料チップ内にできるだけ多く浸透させることが重要である。本報では，蒸解工程以前にSAQを浸透させる工程の導入をラボ蒸解実験により検討した。第1の検討として，浸透処理後の廃液中からSAQ回収率を測定し，浸透に最適な条件を推定した。その結果，温度，時間，AA添加率，液比の各条件について，SAQ回収率の変化があることを確認し，浸透に適した条件を推定することができた。第2の検討として，それらの条件を用いてSAQ浸透処理およびクラフト蒸解を行い，その効果を確認した。その結果，浸透処理によってさらなるパルプ収率の向上およびカッパー価の低減が見られた。一方，浸透処理時にはSAQを添加せず ...
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Hardwood Kraft Cooking and Bleaching
JAPAN TAPPI JOURNAL, 2005Toru Kobayashi +2 more
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Kraft cooking with varying alkali concentration - Influence on TCF-bleachability
Nordic Pulp & Paper Research Journal, 1998The TCF-bleachability of softwood pulps produced by kraft pulping processes with varying alkali concentrations was investigated.
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Addition of methanol to a kraft cook
Nordic Pulp & Paper Research Journal, 1994Erik Norman +3 more
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Structural changes in lignin during kraft cooking
Nordic Pulp & Paper Research Journal, 1988Göbran Gellerstedt +2 more
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