Energy-saving environment-friendly multi-effect evaporation system

The invention provides an energy-saving and environment-friendly multi-effect evaporation system, and mainly relates to the technical field of chemical equipment. An energy-saving and environment-friendly multi-effect evaporation system comprises a tank body, a heat exchanger is fixedly installed in the tank body and comprises an upper shell and a lower shell, the upper shell and the lower shell are communicated through a plurality of evenly-distributed heat exchange pipes, an upper air inlet pipe is fixedly installed on one side of the upper shell, and a lower air inlet pipe is fixedly installed on the other side of the lower shell. A lower air inlet pipe is fixedly installed on one side of the lower shell, a partition plate is arranged between the upper shell and the lower shell, a plurality of first through holes corresponding to the heat exchange pipes in a one-to-one mode are formed in the top face of the partition plate, and the heat exchange pipes penetrate through the corresponding through holes respe