METHOD FOR PREVENTION OF COKE FORMATION CATALYSED BY METAL Russian patent published in 2014 - IPC C10G11/18 

FIELD: oil and gas industry.

SUBSTANCE: invention describes method and device where sulfiding chemical is added to catalytic conversion reactor in order to prevent coke formation catalysed by metal. Method of fluidised-bed catalytic cracking includes delivery of hydrocarbon feed material to reactor; delivery of catalyst to the above reactor; introduction of the above feed material into contact with the above catalyst; delivery of sulfiding chemical which is separated from the feed material upwards in the above reactor; adding of the above sulfiding chemical to the reactor; cracking of the above hydrocarbon feed material with production of hydrocarbon products with less molecular weight; and separation of the above hydrocarbon products from the above catalyst. Device contains, in particular, sulfiding chemical feed line, which is different from hydrocarbon material feed line; it is communicated with riser which is communicated with the reactor.

EFFECT: regulation of coke formation using flow generated in cracking process.

10 cl, 1 dwg