| Summary: | 碩士 === 國立成功大學 === 航空太空工程學系碩博士班 === 92 === The practical use of Integrated extra heavy oil Gasification Combined Cycle (IGCC) power generation is expected from the viewpoints of the improvement of thermal efficiency, the decrease in emission of greenhouse gases, the fuel diversification, and the cost decrease, etc. The theme of studying in this thesis lies in probing into the emulsified heavy oil named ORIMULSION gasification characteristic in the entrained-flow gasifier. Tentatively, suppose the fuel imported as ORIMULSION composition after pyrolysis: CH4、H2O、CO、CO2、H2 and C. The purpose lies in observing and comparing the distribution of temperature in the chamber and the composition of syngas exported after the global gasification reactions finish. Furthermore, suppose gaseous carbon and fixed fuel supply, respectively we use different oxygen supply , turbulence model , wall temperature and operation pressure as operation conditions. The result of study shows: When increasing the oxidant supply, it will cause the reduction of H2 and CO and increase of CO2 in the exit, and it also have a little effect on H2O. If DSM turbulence model is enabled being used for calculating, then H2O will increase in a large amount obviously and calculate out slower turbulence mixing speed. The way to increase wall temperature does not have obvious influence on syngas exported at the same time. And operation pressure can get the ideal result of estimating at 1.8MPa.
|
|---|
