Injection of antifoulants into thermal cracking reactors

Details Injection of antifoulants into thermal cracking reactors Injection of antifoulants into thermal cracking reactors

1993-01-13

1994-02-08

McFarlane, Anthony

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By c content reduction, e.g., cracking, etc.

585950, 208 48AA, 208106, 208130, 208132, C07C 404

Patent

active

052849945

ABSTRACT:
A liquid tin-containing antifoulant composition is injected into a metal-walled thermal cracking reactor tube, concurrently with the injection of a gaseous stream (preferably a steam-diluted C.sub.2 -C.sub.4 alkane stream), through a nozzle of an injection quill which is positioned in the center region of the reactor tube substantially parallel to the flow of the gaseous stream.
A liquid tin-containing antifoulant is injected into a metal-walled thermal cracking reactor tube through a nozzle of an injection quill at a temperature of about 1000.degree.-1300.degree. F. while a gaseous stream (preferably a steam-diluted C.sub.2 -C.sub.4 alkane stream) flows through the reactor tube, followed by raising the temperature to about 1400.degree.-1800.degree. F. Preferably, the metal walls of the reactor tube are treated with steam after the antifoulant injection at about 1000.degree.-1300.degree. F. but before the antifoulant injection at about 1400.degree.-1800.degree. F.

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