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여러가지 고분자막을 이용하여 N2-SO2 혼합기체를 분리하는 데 있어서 압력, 온도 등을 조작변수로 하여 투과계수와 분리인자를 계산하고 이에 따른 기체투과 특성을 규명하고 분리성능을 측정하였다. 실험한 압력의 범위는 0.1~1.0 MPa이었으며, 온도범위는 283~303 K이었다. 압력이 커질수록 투과계수와 분리인자가 증가하였으나, 온도증가에 따라 투과계수와 분리인자는 감소하였다. 본 실험에서 사용된 막 중 Film-Tech사의 FT-30이 N2-SO2 혼합기체의 분리능력이 가장 뛰어난 것으로 나타났다.
Separation of N2-SO2 mixed gas by polymer membranes, SEPA-97(CA), TFC, and FT-30 membrane, was investigated by varying pressure and temperature. The permeability coefficients and the separation factors of mixed gases were measured, and the influence of various factors on the gas permeability characteristics and separation performance were investigated. The range of pressure was 0.1~1.0 MPa, and that of temperature was 283~303 K. The experimental results showed that the permeability coefficients and the separation factors were increased with an increase in pressure, but they were deereased with increasing temperature. Among the examined membranes, FT-30 possessed the best gas-separating characteristics.
