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Heat Transfer Research
Facteur d'impact: 1.199 Facteur d'impact sur 5 ans: 1.155 SJR: 0.267 SNIP: 0.503 CiteScore™: 1.4

ISSN Imprimer: 1064-2285
ISSN En ligne: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v29.i6-8.140
pages 469-487

Autothermicity and Multiplicity of Steady States in a System for Separated Fluidized-Bed Coal Gasification

B. Tabis
Institute of Chemical Engineering and Physical Chemistry Cracow University of Technology, Poland
W. Zukowski
Faculty of Chemical Engineering and Technology, Institute of Inorganic Chemistry and Technology, Cracow University of Technology, 31-115 Krakow, ul. Warszawska 24, Poland

RÉSUMÉ

The paper presents a parametric analysis of the autothermicity and multiplicity of steady states for a system consisting of two fluidized bed reactors, in which coal gasification takes place, connected by solids recycle. All important design and operational parameters which characterize the system have been taken into account. The results obtained are presented graphically, in the form of steady state hysteresis loops. On the basis of the relationships obtained it is possible to consider the feasibility of coal gasification in a system with separation of endothermic (gasification) and exothermic (combustion) processes.


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