TY - GEN
T1 - Modelling and simulation for extra heavy oil gasification on entrained flow gasifier
AU - Watanabe, Hiroaki
AU - Otaka, Maromu
AU - Hara, Saburo
AU - Ashizawa, Masami
AU - Kidoguchi, Kazuhiro
AU - Inumaru, Jun
PY - 2002
Y1 - 2002
N2 - The objective of this study is to develop an evaluation tool for a design and performance of an extra heavy oil gasifier by a numerical simulation technique. The modelling and the numerical simulation for the extra heavy oil gasification on the 2.4 tons/day entrained flow gasifier of CRIEPI and described in this paper. The gas phase properties are calculated by three dimensional time-mean Eulerian conservation equations, in addition to the k-ε turbulence model. The fuel droplet behavior is modelled via a Lagrangian particle tracking approach. Four reaction processes are modelled in the present paper: atomization (micro-explosion), pyrolysis, coke gasification reaction, and gaseous phase reaction. As a result of the simulation, in a relationship between an oxygen ratio of the gasifier and the gasifier performance, such as heating value of the product gas, carbon conversion efficiency are presented. Distribution of gas temperature and gas composition in the gasifier, and the product gas composition are also presented. Comparison between the computational and the experimental results shows that the most features of the gasifier performance have been captured accurately by the computational procedure. The numerical simulation approach is very useful for the assessment of gasification performance, operation support and optimization of the gasifier design.
AB - The objective of this study is to develop an evaluation tool for a design and performance of an extra heavy oil gasifier by a numerical simulation technique. The modelling and the numerical simulation for the extra heavy oil gasification on the 2.4 tons/day entrained flow gasifier of CRIEPI and described in this paper. The gas phase properties are calculated by three dimensional time-mean Eulerian conservation equations, in addition to the k-ε turbulence model. The fuel droplet behavior is modelled via a Lagrangian particle tracking approach. Four reaction processes are modelled in the present paper: atomization (micro-explosion), pyrolysis, coke gasification reaction, and gaseous phase reaction. As a result of the simulation, in a relationship between an oxygen ratio of the gasifier and the gasifier performance, such as heating value of the product gas, carbon conversion efficiency are presented. Distribution of gas temperature and gas composition in the gasifier, and the product gas composition are also presented. Comparison between the computational and the experimental results shows that the most features of the gasifier performance have been captured accurately by the computational procedure. The numerical simulation approach is very useful for the assessment of gasification performance, operation support and optimization of the gasifier design.
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U2 - 10.1115/ijpgc2002-26062
DO - 10.1115/ijpgc2002-26062
M3 - Conference contribution
AN - SCOPUS:0036441923
SN - 0791836177
SN - 9780791836170
T3 - Proceedings of the 2002 International Joint Power Generation Conference
SP - 667
EP - 674
BT - Proceedings of the 2002 International Joint Power Generation Conference
PB - American Society of Mechanical Engineers
T2 - Proceedings of the IJPGC 2002 International Joint Power Generation Conference
Y2 - 24 June 2002 through 26 June 2002
ER -