Method and apparatus for decoking reactors for thermal...

Details Method and apparatus for decoking reactors for thermal... Method and apparatus for decoking reactors for thermal...

C - Chemistry, Metallurgy

10

G

196/163

C10G 9/16 (2006.01) C10G 9/00 (2006.01)

Patent

CA 1083066

A METHOD AND APPARATUS FOR DECOKING REACTORS FOR THERMAL CRACKING OF HEAVY OILS ABSTRACT OF THE DISCLOSURE A method and apparatus for decoking reactors used for the thermal cracking of heavy oils, employing a rotary injection pipe which is rotatable within the reactor. Upon completion of the thermal cracking and withdrawal of the reaction product, the injection pipe spurts preheated raw material under pressure against the inner wall surfaces of the reactor while it rotates therearound in order to scrub off coke which has deposited on the reactor walls during the previous cracking operation. The invention has the advantage that, by using a small amount of raw material as the scrubbing agent 9 the raw material containing coke removed from the reactor walls may remain in the reactor, thus avoiding additional method steps and apparatus for removing the scrubbing agent and providing a precharge for preventing thermal shocks when the cracking operation is resumed.

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