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Black liquor gasification in a CFB gasifier – system solutions
Mälardalen University, School of Sustainable Development of Society and Technology.ORCID iD: 0000-0002-7233-6916
Mälardalen University, School of Business, Society and Engineering. (MERO)ORCID iD: 0000-0001-8191-4901
Mälardalen University, School of Sustainable Development of Society and Technology.ORCID iD: 0000-0003-0300-0762
2009 (English)Conference paper, Published paper (Refereed)
Abstract [en]

In this paper a new type of black liquor gasification is presented and discussed. It is a CirculatingFluidized Bed process with the addition of TiO2 to the bed material. This gives a directcaustization of Na2CO3 to Na2O.TiO2 which forms NaOH by leaking with water. Thus a lime kilnis not needed. Simultaneously also SO4 is reduced to S2- and stripped off as H2S to a major extent,absorbed in a selective scrubber, giving a separation of OH- and S2- .This makes modifiedcooking possible. The produced synthetic gas can be used to run an efficient Integrated Gas-Combi Cycle (IGCC), up to 37 % electric efficiency, or use the gas for production of differentchemicals like NH3, DME pr Methanol. These aspects are discussed as well in the paper.

Place, publisher, year, edition, pages
2009.
Keywords [en]
Black liquor gasification; direct caustization; system solutions; polygeneration
National Category
Engineering and Technology
Research subject
Energy- and Environmental Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-7593OAI: oai:DiVA.org:mdh-7593DiVA, id: diva2:278729
Conference
The First International Conference on Applied Energy (ICAE09)
Available from: 2009-11-29 Created: 2009-11-29 Last updated: 2013-12-19Bibliographically approved

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Dahlquist, ErikAvelin, AndersYan, Jinyue

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