METHOD AND DEVICE FOR VAPOR-CRACKING OF HYDROCARBONS IN FLUIDIZED PHASE

摘要

Methods for converting by vapor-cracking at high temperature and in the presence of a diluted fluidized phase of essentially heat-conveying particles, on the one hand at least one light hydrocarbon charge which is little contaminated by metals and of which the boiling temperature is lower than 400 DEG C approximately and, on the other hand a heavier hydrocarbon charge essentially comprised of compounds of which the boiling temperature is higher than 400 DEG C approximately. According to the invention, the heavier hydrocarbon charge is injected between the step for the separation of the particles and the hydrocarbons issued from vapor-cracking and the step of fractionation of said hydrocarbons. Part of the rest of the distillation of hydrocarbons issued from vapor-cracking is injected in the downstream portion of the reactor.