Document Type and Number:
Japanese Patent JPS5049166
Kind Code:
A
Abstract:
A low temperature purification system is provided which is particularly adapted for use to mechanically purify in a continuous operation solutions containing solids and dissolved substances. The purification system includes a solution supply means, and a centrifugal vacuum evaporator to which the solution to be purified is fed from the solution supply means. Drive means are operatively connected to the evaporator for subjecting the solution within the evaporator to centrifugal acceleration thereby causing the solids in the solution to be displaced outwardly of the axis of rotation of the solution and the liquid of the solution is displaced inwardly toward the axis of rotation. Outlet means are embodied in the evaporator for discharging the solids therefrom. The liquid as it is being displaced inwardly is simultaneously subjected to vacuum distillation thereby to produce vapor. This vapor in turn is conducted to a condenser means where the vapor is condensed to a substantially pure liquid. Heat pump means are provided in the system between the centrifugal vacuum evaporator and the condenser means. The heat pump means is operable to transfer the heat of condensation absorbed by the condenser means back to the centrifugal vacuum evaporator thereby to supply heat to the solution in the evaporator to replace the heat loss therefrom as the liquid is transformed to vapor whereby to maintain the temperature of the solution within the evaporator substantially constant. The system includes means for providing heat energy in the solution being introduced to the vacuum evaporator to provide a minimum temperature in the body of the solution within the evaporator and to compensate for heat losses within the system.
Application Number:
JP6758874A
Publication Date:
May 01, 1975
Filing Date:
June 13, 1974
Export Citation:
International Classes:
A23C1/12; B01D1/22; B01D3/08; B01D3/10; B01D9/00; (IPC1-7): B01D1/00