Sökning: "sulphate cook"

Hittade 2 uppsatser innehållade orden sulphate cook.

1. 1. Impact of hardwood black liquor addition on the chemical and physical properties of kraftliner - a lab study

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Industriell miljö- och processteknik

   Författare :Fredrika Sundvall; [2017]
   Nyckelord :Hardwood black liquor; Xylan; Kraft pulping; Black liquor.;

   Sammanfattning : Kraft pulping, also known as sulphate pulping is a complex process where the wood components are liberated from each other facilitated by chemical reactions. During the pulping process some dissolved and degraded compounds end up together with the spent cooking chemicals in the black liquor. LÄS MER

3. 2. The Significance of Liquor-to-Wood Ratio on the Reaction Kinetics of Spruce Sulphate Pulping

   Uppsats för yrkesexamina på grundnivå, Fakulteten för teknik- och naturvetenskap

   Författare :Maria Gustavsson; [2007]
   Nyckelord :sulphate cook; spruce; reaction kinetics; liquor-to-wood ratio; carbohydrate dissolution; delignification;

   Sammanfattning : In 1957 Vroom presented an article that dealt with the kinetics of the sulphate cook. He showed that the lignin dissolution exhibited a temperature/time dependency that could be explained by the Arrhenius equation and that the reaction was of first order with respect to lignin. LÄS MER