Nano-film MVR (mechanical vapor recompression) evaporation system and evaporation process thereof

The invention discloses a nano-film MVR (mechanical vapor recompression) evaporation system which comprises a nano-film evaporation component, a first heat exchanger, a second heat exchanger and an MVR heat source supply component, one end of the nano-film evaporation component is provided with a stock solution input pipe, and the other end of the nano-film evaporation component is provided with a circulating inflow pipe and a circulating outflow pipe. The circulating inflow pipe and the circulating outflow pipe are connected with the first heat exchanger; the MVR heat source supply assembly comprises an MVR evaporator, a compressor and a separator, the two ends of the separator are connected with the output end of the MVR evaporator and the compressor respectively, and the output end of the compressor is connected with the first heat exchanger; the output end of the MVR evaporator is connected with the second heat exchanger, a first lower output pipe of the first heat exchanger and a second lower output pipe