| 摘要 |
A method for obtaining hydrocarbon solvents having a sulphur content lower than 10 ppm, an aromatics content lower than 500 ppm, an initial boiling temperature higher than or equal to 300°C and a final boiling temperature lower than or equal to 500°C, for a cutting interval of 100°C at most, comprising the steps of: - dewaxing a hydrocarbon cut having a boiling temperature higher than 300°C from the distillation of a gas oil cut, - hydrodearomatising all or part of the dewaxed effluent in the presence of a catalyst comprising alumina based nickel at a pressure varying between 60 and 200 bars and a temperature varying between 80 and 250°C, - recovering the dewaxed and dearomatised cut, - distilling the dewaxed and dearomatised cut, into cuts, - recovering at least one cut at 300°C+ having a pour point lower than -25°C, said cut having a distillation interval lower than 100°C. |
