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A self-consisted CFD-model for pressurized high temperature black liquor gasification
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Energy Technology Center.
2008 (English)In: IFRF Combustion Journal, ISSN 1562-479X, p. 1-34Article in journal (Refereed)
Abstract [en]

High temperature pressurised black liquor gasification has the potential to significantly improve the efficiency of energy and chemical recovery in the pulping industry. However, a lack of demonstration of the reliability of the process has delayed its large scale industrial implementation. As an important step towards a greater trust in the process reliability, a self-consistent CFD model has been developed. This paper contains a detailed description of the model and a performance prediction of an entrained flow pilot gasifier for a typical operational condition. Emphasis is put on the modelling of input data for the CFD simulation where eight key assumptions form the basis for a consistent model of the black liquor composition. The results for the pilot gasifier performance with typical values for the design variables indicate that the droplet size should be <200 μm and/or have a residence time of 2-3 s for a high level of carbon conversion.

Place, publisher, year, edition, pages
2008. p. 1-34
Keywords [en]
Black liquor, CFD, Droplet, Gasification, Modelling
Keywords [sv]
Energiteknik
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:ri:diva-6978Scopus ID: 2-s2.0-38549160635OAI: oai:DiVA.org:ri-6978DiVA, id: diva2:964833
Available from: 2016-09-08 Created: 2016-09-08Bibliographically approved

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