4.3 Article

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

Journal

INTERNATIONAL JOURNAL OF THERMOPHYSICS
Volume 31, Issue 2, Pages 308-315

Publisher

SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10765-010-0718-8

Keywords

CO2 Capture; Diisopropyl ether; DME absorption separating; Vapor-liquid equilibria

Funding

  1. National Natural Science Foundation of China [50890184]
  2. National High Technology Research and Development Program of China [2008AA062301-04]

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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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