PROCEDIMIENTO PARA EL REFINADO CON SOLVENTE DE UNA MATERIA PRIMA DE ACEITE LUBRICANTE

摘要

In a process for solvent refining a lubricating oil feedstock in which a portion of the solvent is recovered from the extract phase (e.g. by distillation or flash separation) and a further portion of the solvent is recovered by stripping the extract with an inert gas to form an inert gas/solvent vapour mixture, the inert gas/solvent vapour mixture is contacted with the lubricating oil feedstock to absorb the solvent from the gas and to remove extraneous water from the feedstock.