Feasibility of Reducing Fuel Gas Clean-Up Needs. Phase I. Survey of the Effect of Gasification Process Conditions on the Entrainment of Impurities in the Fuel Gas.

摘要

The feasibility of reducing fuel gas clean-up needs through gasification process modifications without significantly changing the thermal efficiency has been investigated. A review of experimental gasifier data has been conducted to identify the effects of gasifier operating parameters on the carryover of impurities in the fuel gas. Insufficient environmental data is available at this time to permit quantitative correlation of effluent production and process operating conditions. For some gasifiers it has been demonstrated that modification of operating conditions can result in significant reduction in effluents without adversely affecting methane or product gas yields,while for other gasifiers modification of operating conditions to control impurities carryover may be limited by the characteristics of the feed coal and/or process control considerations. It is concluded that further efforts should be undertaken to better characterize coal gas streams with respect to minor and trace compounds,and that the potential of process modification for reducing impurities carryover should be investigated for specific gasifier applications at a later date. 52references. (ERA citation 02:006470)