| OCR Text |
Show 9/18 concentration under the planned condition. Conclusion A series of tests were conducted on the dust-removal, CO-shifting and desulfurization capabi I ities of the proposed system using gas from the Texaco type gasifier. The findings are summarized below. (1) The experiment found that use of a ceramic filter could provide the system with dust-removal capabi I ity to hold the outlet dust concentration to below 10 mg/m 3 N. Proper backwash conditions were also identified through the tests. (2) A CO-conversion rate of 30% to 40%, which is approximately equal to the theoretical eQui I ibrium value, was achieved with commercial catalysts. However, further research efforts are needed to device effective measures for maintaining the activity of catalysts. (3) A desulfurization efficiency of 97% to 98% was achieved by an integrated desulfurization system which combined a fluidized-bed desulfurizer using iron oxide and a fixed-bed desulfurizer using zinc oxide. Useful date was also obtained on desirable regeneration conditions. From now on, our research act i v i ties wi I I be focused on co I I ect i ng desulfurization data at higher temperatures using the testing equipment descr i bed in th i s report. I n add i t i on, another ser i es of tests wi I I be conducted on fluidized-bed desulfurizer using zinc oxides in an effort to simplify the desulfurization system. References (l)Saito,K.,Amaike,S.,et al., TEPCO Cool Water Type IGCe Trial Design and Development of Performance Evaluation System. EPRI Eleventh Conference on Gasification Power Plants. 1992. (2)Abe. T .. Saito.K .. et al .. Studies on Coal Gasification Technology Improvement with a Pilot Plant. JSME-ASME ICOPE-93,1993. |
