HYDROLIQUEFACTION OF SUB-BITUMINOUS AND LIGNITIC COALS TO HEAVY PITCH

摘要

HYDROLIQUEFACTION OF SUB-BITUMINOUS AND LIGNITICCOATS TO HEAVY PITCHAbstract of the DisclosureIn the hydroliquefaction of a sub-bituminous and/orlignitic coal, the inlet temperature to the hydroliquefaction zone ismaintained at a temperature higher than those previously employedby providing recycle of hot liquid from the outlet portion of thehydroliquefaction zone. In this manner, the hydroliquefaction isoperated at higher average temperatures, and total reaction volumeis reduced, thereby reducing overall costs.. .. .