| 摘要 |
PCT No. PCT/DE84/00233 Sec. 371 Date May 20, 1985 Sec. 102(e) Date May 20, 1985 PCT Filed Nov. 3, 1984 PCT Pub. No. WO85/01954 PCT Pub. Date May 9, 1985.In a process for the liquefaction of coal under increased pressure and temperature in a liquefaction zone, it is recommended that the liquefaction product exiting the liquefaction zone is fed into a coking area, there cooling the gases and vapors produced, (which are mainly distillate oil vapors), preferably in direct heat exchange with the coal paste. The gases and vapors not condensed during this heat exchange are extracted from the unit as end products. The proposed type of process partially transfers oil production from the liquefaction zone to the coking zone, so that the liquefaction zone can be operated with low pressure. In addition, due to the direct heat exchange of the product vapors with the fresh coal paste, a great part of the exothermic heat created by the liquefaction reactions can be fed back into the process. |
