Process for short contact time cracking

Details Process for short contact time cracking Process for short contact time cracking

1992-12-02

1994-03-22

Bell, Mark L.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208152, 208153, 208157, 208161, 208163, 208164, C10G 1118, C10G 3514

Patent

active

052961311

ABSTRACT:
A process for short contact time cracking of heavy feed. A falling, annular curtain of hot regenerated FCC catalyst, or hot inert solids, is formed over a cone shaped plug valve. Hydrocarbons pass from under the cone, or via a hollow stem, in radial in to out flow to contact the falling curtain of solids. After 0.01 to 1.0 seconds of contact time, solids and cracked vapor are separated, preferably in a bell separator beneath the reaction zone. Downflow of reactants into a contiguous upflowing stripper minimizes attrition.

REFERENCES:
patent: 4435272 (1984-03-01), Bartholic et al.
patent: 4800014 (1989-06-01), Hays et al.
patent: 4904281 (1990-02-01), Raterman
patent: 4919898 (1990-04-01), Gartside et al.
patent: 4985136 (1991-01-01), Bartholic

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