Flash Pyrolysis Coal Liquefaction Process Development. Monthly Report, July 1977

摘要

Extended operation with bituminous coal was limited by poor char circulation control. Modifications to the char circulation system to improve control will be tested next month. A series of short tests with the PDU suggest that product tar from subbituminous coal is adsorbed and cracked on the surface of the char. Tests have been scheduled on the BSR to further evaluate this premise. A concept to pneumatically lift char from a fluidized-bed reservoir was successfully tested in a preliminary cold flow apparatus. The char lift concept is potentially more stable than the mechanical method currently employed in the PDU. (ERA citation 03:025654)