DEASPHALTING PROCESS INCLUDING ENERGY RECOVERY IN THE COURSE OF THE SEPARATION OF DEASPHALTED OIL AND DEASPHALTING SOLVENT

摘要

accurate disclosuresynthetic process with a ru00e9cuparation energy atthe separation of the de asphalted oil solvent, whichthere is an oil containing asphalt to an extraction with athe solvent is a separate oil phase (crude extract).asphalt phase, separating the oil and raffinate solvent.each of these stages; the method is characterized in that, in order toto separate the solvent from the oil phase (crude extract) is inin two or more stages.(a) in the first stage is the oil phase atsupercritical conditions in relation to the temperature t1 and the solvent.the pressure p1, in order to cause separation into two phases.a first phase of the first phase of a recovered solvent and extractrich in oil and separating the two phases.(b) in a second step, the first step is to extractrich in oil, obtained in the first step, conditionscompared with the solvent of supercritical temperature and pressure returnp2, so as to cause separation into two phases, one secondrecovered solvent phase and a second phase of the extract enriched inoil and separating these two phases, the second phase of the extract enrichedas the oil is asphalted oil wantedthe potential residual solvent from the process is characterized by:in addition to that 75 to 97% of the solvent content in the crude extractin the first step, and from 50 to 80% of the solventthe first phase of extract enriched with oil is separated in thethe second stage.