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Measurement of Vapor–Liquid Equilibrium for the DME + Diisopropyl Ether Binary System and Correlation for the DME + CO2 + Diisopropyl Ether Ternary System

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Abstract

Vapor–liquid equilibrium (VLE) data have been measured with a static-type VLE apparatus for the dimethyl ether (DME)–diisopropyl ether (DIPE) binary system at five temperatures within the range from 293.04 K to 352.70 K. An isothermal correlation for the experimental data has been carried out based on the Peng-Robinson equation of state. The regressed binary interaction parameters were used to estimate VLE for the DME–CO2–DIPE ternary system at 298.15 K. From the study, it is demonstrated that DIPE is an excellent absorbent for separation in the DME synthesis process from syngas.

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Abbreviations

a, b :

Parameters, Peng-Robinson equation of state

p :

Pressure

p c :

Critical pressure

R :

Universal gas constant

T :

Temperature (K)

T c :

Critical temperature (K)

T r :

Reduced temperature

V :

Molar volume

α :

Function, Peng-Robinson equation of state

ω :

Acentric factor

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Correspondence to Danxing Zheng.

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Wu, X., Du, X. & Zheng, D. Measurement of Vapor–Liquid Equilibrium for the DME + Diisopropyl Ether Binary System and Correlation for the DME + CO2 + Diisopropyl Ether Ternary System. Int J Thermophys 31, 308–315 (2010). https://doi.org/10.1007/s10765-010-0718-8

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  • DOI: https://doi.org/10.1007/s10765-010-0718-8

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