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Thermochemical Equilibrium Study of Slag Formation during Pressurized Entrained-Flow Gasification of Woody Biomass
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
2015 (English)In: Energy & Fuels, ISSN 0887-0624, E-ISSN 1520-5029, Vol. 29, no 7, 4399-4406 p.Article in journal (Refereed) Published
Abstract [en]

The potential slag formation behavior during pressurized entrained-flow gasification (PEFG) of woody biomass has been studied from a thermodynamic perspective with respect to compositional, temperature, and pressure variations. An ash transformation scheme was proposed on the basis of the melt formation potential that arises when gaseous K species are present with Si and Ca. Databases and models in FactSage 6.4 were used to carry out thermochemical equilibrium calculations within ChemSheet. It was found that increasing pressure and increasing Si content expanded the range of operating conditions that are conducive of melt formation, while increasing temperature and increasing Ca content diminished the range. The results from the calculations compared qualitatively well to experimental results and provide further information needed in the development of PEFG reactors for woody biomass.

Place, publisher, year, edition, pages
2015. Vol. 29, no 7, 4399-4406 p.
National Category
Chemical Engineering Energy Engineering
Identifiers
URN: urn:nbn:se:umu:diva-109465DOI: 10.1021/acs.energyfuels.5b00889ISI: 000360026900044OAI: oai:DiVA.org:umu-109465DiVA: diva2:859570
Available from: 2015-10-07 Created: 2015-09-28 Last updated: 2017-12-01Bibliographically approved

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