화학공학소재연구정보센터
Journal of Chemical and Engineering Data, Vol.51, No.6, 2222-2224, 2006
Phase equilibrium for clathrate hydrates formed with difluoromethane or krypton, each coexisting with fluorocyclopentane
This paper presents phase- equilibrium pressure- temperature data for the clathrate hydrates formed in two threecomponent systemssthe difluoromethane + fluorocyclopentane + water system and the krypton + fluorocyclopentane + water system. The vapor + liquid + liquid + hydrate four- phase equilibrium in the former system was measured at pressures from ( 0.110 to 1.040) MPa and at temperatures from ( 288.65 to 299.55) K, while that in the latter system was measured at pressures from ( 0.111 to 4.866) MPa and at temperatures from ( 286.55 to 308.45) K. The temperature in the former four- phase equilibrium was found to exceed that in the three- phase equilibrium in the two- component difluoromethane + water system by 9 K or more over the pressure range up to 1.040 MPa. The temperature in the latter four- phase equilibrium was found to be higher than that in the threephase equilibrium in the two- component krypton + water system by more than 23 K over the pressure range up to 4.866 MPa.