分离式机械压汽蒸馏系统的实验

针对传统机械压汽蒸馏的不足，提出分离式机械压汽蒸馏系统.建立了一套容量为1.5 m³/d的单效分离式机械压汽蒸馏系统并对其进行实验研究.实验系统主要由两套旋转蒸发器、冷凝器以及压缩机组成.通过改变压缩机转速和蒸发温度来研究系统的性能.结果表明在蒸馏水产量一定的前提下压缩机进口压力和冷凝器进口压力随着压缩机转速的增加而逐渐下降，换热温差随着压缩机转速的增加而增加，最高温差稳定在8.5℃左右.通过改变系统的真空度获得不同的蒸发温度，蒸发温度越高，蒸馏产量越高，系统性能也越好.

Experiments of separated structure mechanical vapor compression system

Due to the disadvantages of the traditional mechanical vapor compression (MVC) system, a new MVC system which has the separated structure was presented. The new system was studied experimentally on a single effect system with a rated capacity of 1.5 m³/d. The experiment system consists of two sets of rotating evaporators, condenser and compressor. The performance of the system was evaluated at different compressor speeds and evaporating temperatures. It shows that the compressor and condenser inlet pressures fall gradually with the increases in compressor speed under a constant distillate production. However, the temperature difference increases with the increase in compressor speed, and the value of the highest temperature difference is stabilized at around 8.5℃. The different evaporating temperatures were obtained by the variation of the vacuum. Increasing the evaporating temperature enhances the production, and the performance is better with higher evaporating temperature.