디메틸에테르, 프로판, n-부탄 혼합 액화가스에서 황화합물의 분배계수 특성

Abstract

The partition coefficients of odorizing sulfur compounds such as ethanethiol, dimethyl sulfide, 2-methyl propane-2-thiol and methyl ethyl sulfide in liquid propane, dimethyl ether and n-butane mixture, were studied. The partition coefficients of the sulfur compounds are determined by the multiple linear regression by using SPSS(Statistical Package for Social Science). The descripters effecting on the partition coefficients (PC) are the compositions (Mol%) of dimethyl ether in liquefied mixed gas, vapor pressure (Vap) of liquid mixed gas, dipole moment (D) of the sulfur compounds, and the boiling point (bp(K)) of the sulfur compounds. Predicted equation of partition coefficient for sulfur compounds using SPSS program is as follows; PC = -6.66×10 Mol% 0.223 Vap 0.137 D 5.91×10 bp (K) + 2.491 (N=28, Radj = 0.773, F=19.50). The important descripters are the boiling point of sulfur compounds, and the vapor pressure of the liquid mixed gas. The partition coefficients have decreasing propensity as the individual descripters increase. The partition coefficients of sulfur compounds in liquified petroleum gas are linearly dependent on the vapor pressures of liquid gas, while those in liquid gas containing dimethyl ether are linearly dependent on the vapor pressures and the contents of dimethyl ether in liquefied gas.