| 摘要 |
<p>Coal is liquefied under controlled conditions to produce a coal liquefaction product having a Deashability Index (D.I.) of 10-18 wherein D.I. is the weight ratio of ash free benzene insolubles in the product to ash free carbonaceous matter dissolved and dispersed in the liquefaction solvent times 100. The controlled Deashability Index facilitates separation of insoluble material.</p> |
