Process improvement of aromatic and naphthene aromatics diesel cuts

摘要

"The process of improvement of aromatic and naphthene aromatics diesel cuts.The transformation process of a cutting gas to produce a fuel that has a quality according to strict specifications in terms of sulphur content, content of aromatic compounds.Cetane index, temperature, boiling T95, 95% of the compounds and density, D15 / 4, 15 198 C.This process comprises a step of hidrorrefinau00e7u00e3o and a stage of hydrocracking, this last using a catalyst which contains at least one zeolite.The conversion into products which have a boiling point less than 150 198 C is, for the whole of the two stages hydrocracking and hidrorrefinau00e7u00e3o, less than 40% in weight, andFor the step of hidrorrefinau00e7u00e3o, between 1 and 15% by weight.The temperature, TR2, stage of hydrocracking, is lower than the temperature of the stage of hidrorrefinau00e7u00e3o, Tr1, and the difference between the temperatures Tr1 and TR2 is between 0 and 80 198 C.