Overview of the Three Aspects of the Slurry Bed Process

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The summary of slurry bed hydrogenation units includes: three reactors, three phases (gas, liquid, solid), three catalyst materials, three cycles (cyclic hydrogen, cyclic oil sludge, cyclic wax oil), three types of blockages (reaction coking, deposition blockage, cold polymerization blockage), three high values (high height-to-diameter ratio, high solids loading, high catalyst consumption [expensive]), three increases in temperature (increase in temperature of diesel during operation, increase in temperature of wax oil, increase in temperature of residue), three decreases in temperature (decrease in temperature of residue during shutdown to remove it, decrease in temperature of wax oil to remove it, decrease in temperature of diesel to remove it), and three principles to be followed in case of accidents (continuous supply of cold hydrogen, continuous supply of cold oil, and continuous flow of the slurry)