Inhibition of coke formation during vaporization of heavy hydroc

Details Inhibition of coke formation during vaporization of heavy hydroc Inhibition of coke formation during vaporization of heavy hydroc

1988-12-02

1993-03-02

McFarlane, Anthony

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208130, 208132, 585648, C10G 4722, C07C 404

Patent

active

051906341

ABSTRACT:
An improved process for vaporizing a crude petroleum feedstock, preferably one boiling in the vacuum gas oil range or higher, prior to thermal cracking to olefins, wherein such feedstock is preheated, in one or more stages, in the convection section of a tubular steam cracking furnace, characterized by conducting the preheating in the presence of a small amount of hydrogen, preferably at a hydrogen/feed ratio of from about 0.01 to about 0.15 wt. %, so as to inhibit coke formation.

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patent: 4615795 (1986-10-01), Woebcke et al.
patent: 4617109 (1986-10-01), Wells et al.

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