Antifoam process for delayed coking

Details Antifoam process for delayed coking Antifoam process for delayed coking

1989-04-13

1990-10-09

Caldarola, Glenn

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208 48AA, C10G 914

Patent

active

049618407

ABSTRACT:
An improved delayed coking process using an improved method for adding antifoam materials to the delayed coking process. The process is directed to injecting a polysiloxane antifoam material in mixture with an inert gas in the absence or substantial absence of steam and wherein this mixture is heated and thereafter injected into a delayed coking drum. The process allows improved use of antifoam materials and prevents downstream contamination of process units with silica materials which can be broken down when the polysiloxane antifoam material is contacted with large quantities of steam within the coking drum.

REFERENCES:
patent: 3700587 (1972-10-01), Hyde
patent: 3956101 (1976-05-01), Hara et al.
patent: 3960704 (1976-06-01), Kegler et al.
patent: 4012109 (1986-09-01), Dillon et al.
patent: 4080283 (1978-03-01), Naguchi et al.
patent: 4176052 (1979-11-01), Bruce et al.
patent: 4334980 (1982-06-01), Hsu

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