Patent ID: 6022472
Filing Date: 2000-02-08
Classification: C10G,Y10S

Abstract:
A process for the steam cracking of hydrocarbons, comprising the steps of:(i) providing a sulphur-containing hydrocarbon feedstock;(ii) removing the sulphur from the hydrocarbon feedstock to form a desulphurized hydrocarbon feedstock;(iii) adding to the desulphurized feedstock from 10 to 1000 ppm by weight (calculated as elemental sulphur) of at least one thiohydrocarbon wherein the sulphur is part of aromatic heterocycles, to form a sulphur-supplemented hydrocarbon feedstock;(iv) subjecting the sulphur-supplemented feedstock to steam cracking to produce lower molecular weight hydrocarbon fractions; and,(v) recovering said lower molecular weight hydrocarbon fractions.