| 摘要 |
A liquid purification system (70) comprising means (4) for receiving a first liquid (32) containing impurities, refrigeration means (1) in communication with the liquid receiving means (4) having means (2) for compressing a refrigerant, and at least two sets of heat exchange means (31, 35) and (38, 41) in series adapted to receive the refrigerant from the compressing means (2). Each set of heat exchange means (31, 35) and (38, 41) has liquid evaporation means (31, 38) in communication with the liquid (32, 39) containing impurities for inducing a phase change in the liquid, wherein the phase change includes a vapor phase (8) essentially free of impurities, vapor phase condensation means (35, 41) connected to the liquid evaporation means (31, 38) for condensing the vapor phase (8) in communication therewith to produce an essentially pure liquid (36, 42) and expansion means (33, 40) between the liquid evaporation (31, 38) and condensation means (35, 40) for expanding the refrigerant as it is conveyed between the liquid evaporation means (31, 38) and the vapor phase condensation means (35, 41). The system (70) also includes means (3) for conveying the refrigerant from the heat exchange means (31, 35) and (38, 41) back to the compressing means (2). |
