Bi-Gas Pilot Plant Operation. Technical Progress Report, August 1, 1983-August 31, 1983

摘要

Test G-21, which was conducted August 9 to 12, was the first run in which the gasifier was operated at 500 psig with Illinois No. 6 coal. The test was terminated due to a leak in the product gas char cyclone inlet line. Lowering the gasifier pressure to 500 psig did not significantly reduce char agglomeration and subsequently, feed leg plugging, that had been occurring with Illinois No. 6 coal. The new solids feed start-up procedure did not help reduce plugging in the char feed legs. Tar formation was very high as noted by the Pall ring plugging in the ammonia stripper and the gas washer tray deposits. It is believed that this material was formed due to the low Stage II temperatures that occurred during the run and not from the lower pressure operation, but further studies will be required to verify this point. 3 figures. (ERA citation 09:035018)