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The invention is relative to a process of separation by stripage which can find application mainly in the concentration or separation of liquid mixture or the drying of solid. The process rests on the recycling of gas of stripage. The compounds pulled by gas of stripage are separated by condensation before or after recompression. The heat of condensation is re-used to heat the mixture to be separated whereas the gas of stripage is returned in the room. This process combines an energy recovery with a recycling of gas of stripage in order to reduce consumption of energy and gas of stripage.