Condensed Rotational Separation is based on partial condensation of components of gas-gas mixtures. Condensation is induced by ?ash evaporation or pressure distillation. The rotational particle separator removes the micron sized particles formed by condensation from the gas. Yields and purities are enhanced by adding a next stage of liquid ?ash and relooping the gas to the ?rst stage. A great improvement in separation performance, in both yields and purities, is achieved by allowance for operation of CRS within the vapour-liquid-solid region. Condensed rotational separation is shown to be an economically attractive process for upgrading sour gas ?elds contam- inated with CO2 and/or H2S.
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