Parameter optimization for biomass gasification process based on the multi-objective genetic algorithms;

The Research of Modeling and Optimizing of Biomass Power Generation Gasification Process

At present,there is few research on the modeling of the characteristics of gasification process,which is used to determine the parameters such as the composition and caloric value of producer gas and etc.

The effects of gasification temperature and catalyst species on Peicheng natural coke-H_2O gasification reaction were researched on the pressurized thermo-gravimetric(TG)apparatus,the coke's pore structures under different temperatures were observed by the Scanning Electron Microscopy (SEM),and the kinetics parameters were calculated.

Coal slurry gasification at high pressure was simulated with ASPEN PLUS,and the con-tents of methane in crude syngas at different gasification temperatures were obtained,providing refer-ences for indirect predication of gasification temperature in the preduction.

The results showed that,comparing with the equivalence ra- tio,the gasification temperature has a more obvious influence on the nitrogenous species concentrations.

Through comprehensively analyzing the affection of system resistance of fixed-bed gasifier to gasification strength,it is proved by cases that the process with high resistance is harmful,which presents the importance correctly distributing resistances in sections of fixed-bed gasifier system which should be considered in design and operation.