Dispersed catalyst cracking with methanol as a coreactant

Details Dispersed catalyst cracking with methanol as a coreactant Dispersed catalyst cracking with methanol as a coreactant

1985-12-30

1986-12-09

Hearn, Brian E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208111, 585358, 585408, 585640, 585733, C10G 1105, C10G 4716, C07C 124

Patent

active

046279113

ABSTRACT:
A catalytic cracking process is described in which methanol is a coreactant with gas oil in combination with a small amount (catalyst/oil 0.01) of a dispersed, very fine, and highly active catalyst powder, such as ZSM-5B. The methanol is preferably admixed with the catalyst before admixture with the oil in order to protect the catalyst from adsorption of poisonous compounds (e.g., nitrogenous compounds) during the initial stages of the reaction, particularly if the methanol is insoluble in a non-polar hydrocarbon feed. The premixed materials are fed into a riser reactor. The residence time in the reactor is 6-15 seconds. Preferably, the catalyst is not regenerated. The quantity of methanol is maintained so that its exothermic reaction is approximately heat balanced with the endothermic catalytic cracking reaction.

REFERENCES:
patent: 3254023 (1966-05-01), Miale et al.
patent: 3530064 (1970-09-01), Chen et al.
patent: 4035285 (1977-07-01), Owen et al.
patent: 4090949 (1978-05-01), Owen et al.
patent: 4431519 (1984-02-01), LaPierre et al.

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