CATALYTIC PRODUCTION OF AROMATIC HYDROCARBONS FROM LOWER HYDROCARBONS

摘要

Aromatic hydrocarbons are produced from a feedstock comprising ethane and/or propane and/or butane by the steps of: (A) reacting the feedstock in the presence of a dehydrocyclodimerisation catalyst to produce a product comprising aromatic hydrocarbons, hydrogen and methane, (B) separating the product of step (A) into a aromatic hydrocarbon fraction, a methane-rich gaseous fraction and a hydrogen-rich gaseous fraction. (C) feeding all or part of the methane-rich gaseous fraction separated in step (B) to a synthesis gas production unit, thereby to produce synthesis gas, and (D) contacting the synthesis gas from step (C) together with all or part of the hydrogen-rich gaseous fraction separated in step (B), thereby increasing the hydrogen to carbon monoxide ratio of the synthesis gas, with a Fischer-Tropsch conversion catalyst to produce a hydrocarbon product.