Patent ID: 8916043
Filing Date: 2014-12-23
Classification: C10G,C10L,Y02E,Y02P

Abstract:
1. A process for the conversion of coal into fuel bases, comprising the following stages: a) preparing a suspension of coal particles in a solvent; b) liquefying said suspension in the presence of hydrogen in at least one ebullated bed reactor containing a supported catalyst; c) liquefying at least a portion of the effluent obtained in stage b) in the presence of hydrogen in at least one ebullated bed reactor containing a supported catalyst and operating at a temperature at least 10° C. higher than that of stage b); d) separating the effluent obtained at the end of stage c) into a light hydrocarbon fraction containing compounds boiling at at most 500° C. and a residual fraction; e) hydrocracking, in the presence of hydrogen, at least a portion of the light hydrocarbon fraction obtained at the end of stage d) in at least one fixed bed reactor containing a hydrocracking catalyst, the conversion of the 200° C.+ fraction in the hydrocracking stage being more than 10% by weight; separating the effluent obtained at the end of stage e) into at least one liquid fraction containing naphtha, kerosene and/or diesel and a heavy fraction; and wherein the fraction termed the light hydrocarbon fraction obtained at the end of stage d) is fractionated by atmospheric distillation into an atmospheric distillate fraction and an atmospheric residue fraction, said atmospheric residue fraction being fractionated by vacuum distillation into a vacuum distillate fraction containing vacuum gas oil and a vacuum residue fraction, said atmospheric residue fraction and/or the vacuum residue fraction optionally undergoing solvent extraction to obtain an oil extract and an insoluble fraction, a portion or all of said vacuum distillate fraction containing vacuum gas oil and/or oil extract being recycled to stage a) as a solvent, said atmospheric distillate fraction being sent to the hydrocracking stage, optionally as a mixture with other co-feeds.