Experimental testing and data analysis performed for simulated simplified IGCC system components have been completed. Earlier papers presented the program description and preliminary testing operations. This paper presents a review of the testing accomplishments and the results of data analysis.
An air-blown, fixed-bed coal gasifier, and downstream cyclone particle separator were found to retain or remove coal ash particles and alkali metals very effectively. The low calorific fuel gas delivered to a gas turbine combustor was found to be significantly closer to the current “clean fuel” specification than had been anticipated. These results are very encouraging for the further development of simplified IGCC systems utilizing hot gas cleanup. Observed ash deposition rates imply that turbine cleaning would be less frequent by at least an order of magnitude as compared to operation on treated ash-forming petroleum fuels.
