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Vapour-liquid equilibria of n-butane and ethyl mercaptan: Experiments and modelling

Abstract : Design of debutaniser in fractionation train in gas processing requires accurate knowledge of phase equilibrium properties of n-butane with sulphur compounds like mercaptan. In this paper, we report high-quality isothermal vapor-liquid equilibrium data for n-butane + ethyl mercaptan (or ethanethiol) between 298.14 K to 388.18 K and pressures up to 2.0029 MPa. An equipment whose experimental technique is based on static-analytic method was considered. The equipment is composed by an agitated equilibrium cell with two online micro samplers connected to a Gas Chromatograph. The data was correlated with the Peng Robinson equation of state with classical alpha function. A comparison was also performed with two predictive models, PPR78 and PSRK UNIFAC.
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Submitted on : Sunday, September 29, 2019 - 4:31:39 PM
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paper VLE ethanethiol n-butane...
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Eric Boonaert, Alain Valtz, Christophe Coquelet. Vapour-liquid equilibria of n-butane and ethyl mercaptan: Experiments and modelling. Fluid Phase Equilibria, Elsevier, 2020, 504, pp.112335. ⟨10.1016/j.fluid.2019.112335⟩. ⟨hal-02300727⟩



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