Abstract: Particulate coal is rendered less subject to spontaneous ignition by spraying or otherwise contacting it with a light cycle oil, heavy cycle oil, clarified slurry oil, a solution of durene in gasoline and mixtures of two or more of the preceding.

Abstract: Coal is rendered less subject to abrasion and disintegration by reducing it to a 0.2 to 0.5-inch particle size and drying it at a temperature of 200.degree. to 230.degree. F. for 3-7 minutes. The coal is rendered less susceptible to spontaneous ignition by the application of a treating agent which is a petroleum resid mixed with clarified slurry oil or a petroleum resid mixed with a distillate.

Abstract: Coal is rendered less subject to abrasion and disintegration by reducing it to a 0.2 to 0.5-inch particle size and drying it at a temperature of 200.degree. to 230.degree. F. for 3-7 minutes. The coal can be rendered less susceptible to spontaneous ignition by the application of a treating agent which can be a light cycle oil, heavy cycle oil, clarified slurry oil, a petroleum or coal derived distillate or residuum, a solution of durene in gasoline and mixtures of two or more of the preceding.

Abstract: A delayed coking process having improved liquid yield and liquid product distribution relative to coke yield is characterized by the absence of heavy recycle. The coker feedstock is heated in the coker furnace and led to the coker drums where coking takes place and the vaporous effluence are passed to a fractionator from which the heavy gas oil fraction is removed as product. Process heat is conserved by indirect heat exchange of the feedstock with the coking products prior to the feedstock entering the coking furnace. A further improvement in liquid yield and selectivity is obtained by adding a solvent or diluent to the feedstock and this may be either a hydrocarbon fraction such as a coker distillate, a light gas oil or another fraction having an end point below 450.degree. C.; in addition, it may be used in conjunction with a reactive or nonreactive gas such as nitrogen, steam, hydrogen or hydrogen sulfide.

Abstract: In the hydroprocessing of blends of solvent refined coal and recycle solvent, small pore hydrotreating catalysts cause separation of a solid phase from treating blends containing high concentration of solvent refined coal.