METHOD FOR OBTAINING HYDROCARBON SOLVENTS HAVING A BOILING TEMPERATURE HIGHER THAN 300C AND A POUR POINT LOWER THAN OR EQUAL TO -25C

摘要

A sulfur content of less than 10 ppm, an aromatic hydrocarbon content of less than 500 ppm, an initial boiling point measured according to standard ASTM D5950 of at least 300 캜, a final boiling point of not more than 500 캜, a fractionation interval of at most 100 캜, A process for preparing a hydrocarbon solvent having a melting point comprising: - dewaxing the hydrocarbon fraction having an initial boiling point higher than 300 ° C derived by distilling the gas oil fraction; - hydrodenolating all or part of the dewaxed effluent in the presence of a catalyst comprising alumina based nickel at a pressure of from 60 to 200 bar and a temperature of from 80 to 250 ° C; Recovering the dewaxed fraction and the de-aromatized fraction; Distilling off the dewaxed fraction and the de-aromatized fraction; And - recovering at least one 300 ° C + fraction having a pour point lower than -25 ° C and having a distillation interval lower than 100 ° C.