AGGLOMERATION OF OIL/COAL COPROCESSING FEED COAL USING MIXTURE OF COPROCESSING PRODUCT OIL AND HEAVY OIL AS BRIDGING AGENT

摘要

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 minor proportion of a heavy hydrocarbon oil, such as bitumen or heavy 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.