Method of production of slight and aromatic hydrocarbons mononuclear by a catalytic hydrotreatment followed by a thermal cracking

摘要

P process for the production of light olefins and monocyclic aromatic hydrocarbons from a product of the thermal cracking. / p & & p & it is subjected to the product to a hydrotreatment in the presence of a catalyst comprising at least of the tungsten or molybdenum and at least of nickel or cobalt, the catalyst which has been activated with at least 0,5% by weight of fluorine, chlorine or of these two halogen, this hydrotreatment having for its object to increase the yields of light olefins and aromatics mononuclear in a subsequent operation of the thermal cracking, the hydrogenated product is then subjected to thermal cracking. / p & & p & the activation of the catalyst to increase the yields of light olefins and aromatics mononuclear in the operation of the thermal cracking. / p