| 摘要 |
<p>The invention concerns a method for hydrotreating of a hydrocarbon feedstock, comprising at least two reaction steps with intermediate fractionation of the effluent of the first step to eliminate unwanted impurities for the catalyst of the second step, and to produce a desulphurized light liquid fraction. The intermediate fractionation includes a stripping of the first step liquid effluent with pressurized hydrogen with rectification of the stripping vapours by means of a substantially desulphurized liquid reflux. The conditions of said fractionation and of the first hydrotreating step enable to obtain a substantially desulphurized light liquid fraction which is not fed to the second step.</p> |
