Method for preventing coking in fluidized bed reactor for cracki

Details Method for preventing coking in fluidized bed reactor for cracki Method for preventing coking in fluidized bed reactor for cracki

1978-09-27

1980-09-02

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

With prevention or removal of deleterious carbon...

208DIG1, 208113, 208125, 208127, 208130, 208164, 252418, 423DIG16, 423148, 423658, C10G 916, C10G 928, C01B 109, B01J 3714

Patent

active

042205182

ABSTRACT:
In a reactor for cracking heavy hydrocarbon oil through a fluidized bed of particles of natural ores, coke-like materials are deposited on a top of the reactor or pipe inside surfaces of a transfer line from the reactor to a scrubber. To effectively scour out the deposited coke-like materials, particles of natural ores having a mean diameter of a few hundred .mu.m is made to be contained in an effluent gas from the top of reactor, passing through the transfer line at a concentration of 1 to 40 g/m.sup.3. The particles of natural ores have a good effect of scouring out the deposited coke-like materials and can keep the transfer line efficiently clean even with a small amount of the particles of natural ores, decreasing a pressure drop in the transfer line.

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