Results 81 to 90 of about 495 (117)
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The Problems in Delignification of Dry Wood by Kraft Process
Key Engineering Materials, 2016The objective of this study was to assess the causes of the problems arising in the CBC kraft cooking of several types of hardwood chips particularly in view of high dry matter but also in view of chip thickness and character of wood.High dry matter of processed chips influences negatively delignification.
Anton Geffert +2 more
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Bioproducts Process Pathways for Kraft Paper Mills
Journal of ASTM International, 2010Energy use in the United States is heavily reliant on imported fossil fuels. Finding a way to produce renewable fuels that can replace these fossil fuels will address national security threats, sustainability concerns inherent in the use of fossil fuels, and keep manufacturing in rural areas.
Catherine M. Dickerson, Jonathan Rubin
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Surface Modification of Kraft Lignin by Mechanochemical Processing with Sodium Percarbonate
Biomacromolecules, 2023In this article, we present a novel one-pot mechanochemical reaction for the surface activation of lignin. The process involves environmentally friendly oxidation with hydrogen peroxide, depolymerization of fractions with high molecular mass, and introduction of new carbonyl functions into the lignin backbone.
Friedrich Fink +4 more
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Comparison of different kraft lignin-based vanillin production processes
Computers & Chemical Engineering, 2018Abstract This work employed a systematic methodology and process intensification concepts to improve the state-of-the-art vanillin production process from kraft lignin. Particular focus was put on the use of different product separation techniques, including solvent extraction using ethyl acetate, benzene, organic nanofiltration, and adsorption by ...
Nattanan Wongtanyawat +7 more
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Mathematical Modeling of Multistage Evaporator System in Kraft Recovery Process
2016In order to reduce the energy consumption of the concentrating the black liquor in Kraft recovery process in paper mill, a mathematical models is developed and proposed for the analysis of multi stage evaporator (heptad’s effect evaporator system). These multistage evaporator is modeled based on the flow of black liquor and steam operation option.
Om Prakash Verma +3 more
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Kraft Pulp Process Inspection Service by Andritz
JAPAN TAPPI JOURNAL, 2023Ryo Yoshida, Kanji Hagiwara
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Process simulation of Kraft lignin oxidation for vanillin production
2023Kraft lignin waste generated from Kraft pulping process can be potentially converted to a high value product such as vanillin. This work focused on feasibility study of vanillin production from Kraft lignin by oxidation reaction. A reaction model of Kraft lignin oxidation used in this work was selected from literature.
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Process efficiency with entropy – The recovery cycle in the kraft pulp process
Nordic Pulp & Paper Research Journal, 2005Tobias Richards, Hans Theliander
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Three concepts for intensification of nordic kraft pulp processes
2014Process intensification of Nordic kraft pulp mill can be achieved by applying proposed concepts. Sulphur lean concept enables production of value-added sulphurless by-products from pulp mill and efficiency of pulp mill if gasification of black liquor is applied.
Kangas, Petteri +2 more
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Improving kraft pulp mill sustainability by lignosulfonates production from processes residues
Journal of Cleaner Production, 2021Iara Fontes Demuner +2 more
exaly