Controlling foam circulation in an ebullated bed process

Details Controlling foam circulation in an ebullated bed process Controlling foam circulation in an ebullated bed process

1990-11-13

1992-03-24

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208108, 208162, C10G 4516, C10G 4520

Patent

active

050985523

ABSTRACT:
The invention is an improvement in an ebullated bed process. Gas is removed from the vertically oriented reaction vessel until the vessel, including the recycle conduit is liquid filled. Foam, generated around the recycle cup and riser conduits is floated to the top of the reaction vessel by liquid and is prevented from entering the recycle conduit. A more stable hydrodynamic system is thereby achieved.

REFERENCES:
patent: 3151060 (1964-09-01), Garbo
patent: 3188286 (1965-06-01), Van Driesen
patent: 3338820 (1967-08-01), Wolk et al.
patent: 3363992 (1968-01-01), Chervenak
patent: 3378349 (1968-04-01), Shirk
patent: 3412010 (1968-11-01), Alpert et al.
patent: 3414386 (1968-12-01), Mattix
patent: 4457831 (1984-07-01), Gendler
patent: 4755281 (1988-07-01), Penick
patent: 4971678 (1990-11-01), Strickland

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