Advanced Control of the Prehydrolysis Kraft Process
Participants: |
| ||
Timetable: | Begin: 2017-01-01 | ||
End: 2020-12-31 | |||
Description:The ongoing trends in digitalization and environmental awareness have resulted in pressure for the traditional pulp and paper industry towards modernization of the biomass treatment processes for the production of novel bioproducts. The prehydrolysis kraft process adds an acidic pretreatment stage prior traditional kraft cooking cycle, which results in production of hemicellulose lean dissolving pulp that can be used for the production of textiles and various cellulose derivatives. In industrial applications, the prehydrolysis stage is conducted via autohydrolysis, where the naturally occurring acids in the wood, are catalyzing the hydrolysis reactions that are responsible for the removal of the hemicelluloses. Consequently, the variations in the raw material quality cause process disturbances, which require modifications on the cooking recipe. | |||
Researchers: |
|||
This info last modified 2018-04-03 by Jukka Kortela |