B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 8/22 (2006.01) C10G 2/00 (2006.01)
Patent
CA 2150577
Slurry bubble column (1) equipped with downcomers which have high efficiency gas disengagement structure fitted on top of the slurry liquid reaction mixture comprising an inverted channel (8) having a gas vent (12) extending out of the apex (8c) of the inverted channel (8) and a liquid by- pass pipe (13) extending from the side of the inverted channel at a point below the apex (8c) to under the liquid level (9) and emptying into the downcomer. The inverted channel is fitted to the top of the downcomer and the bottom edge (8B) of which inverted channel is in contact with the surface of the slurry mixture in the slurry bubble column reaction zone. Improved catalyst distributing and circulation, mass and heat transfer results from catalyst in gas-lean slurry flowing through the liquid by-pass tubes (13) in the inverted channel and sowing into and down the downcomer to the bottom of the bubble column reactor. Hydrogen or any rejuvenating gas can be introduced into the bottom of the downcomer to restore catalyst activity as the catalyst moves down the downcomer.
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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