Loading patent…
AssigneeEnergy, Mines and Resources Canada
InventorsRichard D. Coleman, Floyd N. Toll, Thomas W. McCracken, C. Edward Capes, Michio Ikura
Estimating the term…
An improved process is described for agglomerating ground coal in which a bridging oil is used as the agglomerating vehicle. This bridging oil is a mixture of a heavy gas oil obtained from coal/oil coprocessing and a heavy hydrocarbon oil, such as bitumen or heavy oil, preferably mixed in the proportion of about 23-40% heavy hydrocarbon oil and 60-77% heavy gas oil. The agglomerated product is mixed with additional heavy oil or bitumen and it becomes the feedstock to a coal/oil coprocessor, with heavy gas oil being formed as one of the product streams. At least part of this heavy gas oil product stream is recycled to the agglomeration stage as the heavy gas oil component of the bridging oil. This agglomeration procedure has the advantage of providing an agglomerate of excellent quality, while carrying out the agglomeration in a short time at ambient temperature and using less than 10% by weight of bridging oil.
In a coal/oil process in which a feed slurry comprising a mixture of (a) a heavy hydrocarbon oil at least 50% by weight of which boils above 525.degree. C. and (b) an agglomerated product comprising coal particles and a bridging liquid, is subjected to hydrocracking and the effluents obtained are separated into separate streams including a heavy gas oil stream,
Dependencies are inferred from the claim text.