Reduced gas holdup in ebullated reactor

Details Reduced gas holdup in ebullated reactor Reduced gas holdup in ebullated reactor

1995-01-13

1995-08-22

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

208143, 208161, 208168, 208158, C10B 3102

Patent

active

054437180

ABSTRACT:
A reactor for refining resid includes an elongated vertical vessel containing a bed of catalyst which is expanded or ebullated by a liquid/gas mixture. The mixture rises in an updraft through the bed and then is recirculated with an increased velocity by an ebullating pump. To reduce gas holdup of the ebullated bed and to promote a more uniform flow, the gas is entrapped by two cascaded stages of baffles which have an internal conical shape to guide, direct, and entrap the gas. One of these two stages has a shape which creates a countercurrent in the flowing liquid to deflect any catalyst particles which might otherwise be elutriated by the increased velocity.

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