Conversion of coal to aromatic compounds involves liquefying, separating light hydrocarbons, hydrocracking, separating naphtha and heavier fractions, reforming naphtha to give hydrogen and reformate with aromatic compounds, and separation

摘要

Conversion of coal to aromatic compounds involves: (A) coal liquefaction in presence of hydrogen; (B) separating effluent obtained into light hydrocarbons fraction; (C) hydrocracking light hydrocarbons fraction in presence of hydrogen in reactor with fixed-bed hydrocracking catalyst, where conversion at 200[deg] C is greater than 30 wt.%; (D) separating effluent into fraction containing naphtha and fraction heavier than naphtha; (E) catalytic reforming fraction containing naphtha to give hydrogen and reformate containing aromatic compounds; and (F) separating aromatic compounds from reformate. Process for conversion of coal to aromatic compounds involves: (A) coal liquefaction step in the presence of hydrogen; (B) step of separation of the effluent obtained at the end of step (A) into a light fraction of hydrocarbons containing compounds boiling at not 500[deg] C and a residual fraction; (C) hydrocracking step in the presence of hydrogen of at least a proportion of the light fraction of hydrocarbons obtained at the end of step (B) in at least one reactor containing a fixed-bed hydrocracking catalyst, where the conversion of the fraction at 200[deg] C in the hydrocracking step is greater than 30 wt.%; (D) separation of the effluent obtained at the end of step (C) into at least a fraction containing naphtha and a fraction heavier than the naphtha fraction; (E) catalytic reforming step of the fraction containing naphtha, giving hydrogen and a reformate containing aromatic compounds; and (F) separation step of the aromatic compounds from the reformate.