The data of Table 3 indicate that a coal liquefaction process employing slurry recycle generates particles of smaller size and lower 50 specific gravity ...

United States Patent m MalMe et tl. [ii] 4128471 [45] Dec. 5, 1978 [34] COAL LIQUEFACTION PROCESS [56] lofcreneei Cited EMPLOYING CAIBON MONOXIDE US PATENT ...

Test 7 of Table II was made using 20 the solvent of Test 6 of Table I. Test 9, like Test 1, employed a recycle solvent from a coal liquefaction process that ...

Even though a liquefaction process operates at a higher thermal efficiency than a gasification process at moderate yields of normally solid dissolved coal, ...

19, 1980 [54] COAL LIQUEFACTION PROCESS EMPLOYING INTERNAL HEAT TRANSFER [75] Inventors: Lawrence J. Kirby; Thomas E. Richardson, both of Littleton; ...

quirements for the process are supplied by fuel produced in the liquefaction process and by energy supplied from a source outside of the process.

Field of the Invention The present invention provides a coal liquefaction process by which to generate and employ a superior process derived solvent to ...

Therefore, spiking with pyrite exerted a substantial advantageous effect in a coal solvent liquefaction process employing slurry recycle.