Sökning: L773:0018 3830 OR L773:1437 434X >
Improved impregnati...
Improved impregnation efficiency and pulp yield of softwood kraft pulp by high effective alkali charge in the impregnation stage
-
- Brännvall, Elisabet (författare)
- RISE,KTH,Fiber- och polymerteknologi,Innventia AB,Innventia,KTH Royal Institute of Technology, Sweden
-
- Backström, Marie (författare)
- RISE,Innventia
-
(creator_code:org_t)
- 2016-06-02
- 2016
- Engelska.
-
Ingår i: Holzforschung. - : Walter de Gruyter. - 0018-3830 .- 1437-434X. ; 70:11, s. 1031-1037
- Relaterad länk:
-
http://ri.diva-porta...
-
visa fler...
-
https://doi.org/10.1...
-
https://ri.diva-port... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- A pulp yield increase up to 2% can be achieved by impregnation with a liquor containing 2 M effective alkali ( EA) concentration instead of 1 M. The yield increase is due to higher cellulose and glucomannan contents in the pulp, which can be rationalized by less yield loss by peeling, as impregnation is more effective at an elevated EA level. A rapid loading of chips with alkali can be realized due to a high diffusion rate. When the temperature becomes higher in the cooking stage, enough alkali is available for delignification reactions without the risk of alkali depletion in the chip core, so that the delignification is more homogeneous.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
Nyckelord
- carbohydrate composition
- homogeneous delignification
- impregnation
- kraft pulping
- pulp yield
- softwood pulping
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas