抄録
In this paper, a series of studies, which have been carried out since six years ago, are summarized, with emphasis on the separation of ice-crystals from brine and the formation of solid hydrates of the secondary refrigerant used in this process.
As for the former studies, several basic experiments were firstly perfomed using synthetic resin particles, quartz sand, and glass spheres, respectively, in place of ice crystals. The results suggested the possibility of countercurrent displacement-type washing for the bed of such floating particles as ice crystals in brine in a smoothly-lined column.
As regards to the latter studies, the equilibrium pressure-temperature diagram for the isobutane-water-sodium chloride system over the ranges of the temperature of -5° to +2°C and the pressure of 1.0 to 1.7 atm was firstly established and followed by the similar measurements for the isobutane-one of butene isomers-water system at a given temperature (-0.7°C, conveniently taken). Based on the results, a general drawing method for the approximate equilibrium pressurecomposition diagram was derived from theoretical considerations.
