Gasificaton Transport: A Multiphase CFD Approach & Measurements

Dimitri Gidaspow ; Veeraya Jiradilok ; Mayank Kashyap ; Benjapon Chalermsinsuwan

关键词: CARBON DIOXIDE;    COAL;    DESIGN;    ELECTRICITY;    FLUIDIZATION;    FLUIDIZED BED REACTORS;    GASIFICATION;    KINETICS;    MARBLE;    MASS TRANSFER;    MOLTEN CARBONATE FUEL CELLS;    TRANSPORT;   

DOI  :  10.2172/966356
RP-ID  :  None
PID  :  OSTI ID: 966356
Others  :  TRN: US200921%%413

美国|英语

来源: SciTech Connect

【 摘 要 】

The objective of this project was to develop predictive theories for the dispersion and mass transfer coefficients and to measure them in the turbulent fluidization regime, using existing facilities. A second objective was to use our multiphase CFD tools to suggest optimized gasifier designs consistent with aims of Future Gen. We have shown that the kinetic theory based CFD codes correctly compute: (1) Dispersion coefficients; and (2) Mass transfer coefficients. Hence, the kinetic theory based CFD codes can be used for fluidized bed reactor design without any such inputs. We have also suggested a new energy efficient method of gasifying coal and producing electricity using a molten carbonate fuel cell. The principal product of this new scheme is carbon dioxide which can be converted into useful products such as marble, as is done very slowly in nature. We believe this scheme is a lot better than the canceled FutureGen, since the carbon dioxide is safely sequestered.