| http://www.w3.org/ns/prov#value | - , said catalytic reaction zone containing oil, catalyst, and gas when said reactor is in an operating mode, said reactor including means for ebullating said catalyst bed in said reaction zone, a freeboard zone above said ebullated catalyst bed, means for recirculating at least said oil from a recirculation input near the top of said reactor to a recirculation outlet near the bottom of said reactor
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