Basic Studies of Coal Pyrolysis and Hydrogasification.

摘要

Studies of product compositions from the pyrolysis of dried Montana lignite under one atmosphere and vacuum conditions were complted during this quarter. Work has focused on the integration of the flow reactor components to produce a working experimental system. A Pittsburgh bituminous coal was fed to the system and collected first with no quenching. The accuracy of the measured weight losses was assessed by pyrolyzing the chars collected from these runs in the captive sample apparatus. Although exact correspondence between the two reactors need not necessarily be expected,sufficient additional weight loss from the chars was observed to indicate significant errors either in the total mass balance or in the flow reactor temperature or both. Current laboratory work is focused on improving the total mass balance for the quenched system. a gas analysis train has been developed. Development of instrumentation for data collection and safe operation of the flow reactor is continuing. A fail-safe reactor hazard alarm system has been designed,constructed,and tested. This facility automatically identifies the specific hazard,triggers an audio alarm,shuts off all hydrogen supplies,and begins flushing the reactor with cold helium. In addition, a preliminary design for a 1500psig reactor shell has been developed.