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Hydrogen Production from a Fluidized‐bed Coal Gasifier with In Situ Fixation of CO 2 –Part I: Numerical Model
Author(s) -
Lu J.,
Yu L.,
Zhang X. P.,
Zhang S. J.,
Dai W. B.
Publication year - 2008
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200700380
Subject(s) - wood gas generator , coal gasification , hydrogen , fluidized bed , coal , nuclear engineering , pulverized coal fired boiler , chemistry , dissipation , work (physics) , hydrogen production , waste management , materials science , mechanics , environmental science , chemical engineering , thermodynamics , engineering , physics , organic chemistry
In order to attempt to eliminate global warming effects, it is highly desirable that new technologies with lower or zero emission of CO 2 to the environment are developed. In this work, a high‐pressure fluidized‐bed coal gasifier for H 2 production with in situ fixation of CO 2 is simulated by a comprehensive two‐dimensional model. The Eddy Dissipation Concept (EDC) model is first adopted in the pulverized coal gasification model to simultaneously describe the turbulent mixing and detailed chemical kinetics. The developed model is verified with experimental results. The simulated concentrations for the gas product agree well with the experimental data. The simulated distributions for gas temperature and velocity correlate well with the reaction mechanism and experimental phenomena.