DETERMINATION OF INTERFACIAL VOLTAGES IN SUPERCRITICAL CONDITIONS

摘要

The invention relates to a method in which: (E1) flows an inner fluid phase, in an internal flow member, and an external fluid phase in an external flow member, the flow of the inner fluid phase opening within the flow of the second fluid phase; and the temperature and the pressure in the contact zone between the first and the second fluid phase being such that the first and / or the second fluid phase is in the supercritical state, (E2) the flow rate of the inner phase is varied. and / or the outer phase so as to modify the flow profile, and a pair of values of the flow rates of the inner and outer phases, referred to as transition phases, are identified, from which the change in the flow profile takes place ( drops of jet, or drip); (E3) from the transition torque identified in step (E2), the interfacial tension value between the two inner and outer fluid phases is calculated or the result obtained is compared to that obtained for another pair under the conditions steps (E1) and (E2).