Abstract: With the increasingly strict regulations and standards of power industry in China，implementation zero discharge
on desulfurized wastewater from thermal power plants is imminent.Since flue gas evaporation technology is simple，and of
low investment and operating costs，it has become the primary method for zero emission. With the rapid development of
computer technology，CFD is widely used in gas flow and droplets numerical simulation of flue gas evaporation technology.
The droplet evaporation mechanism，gas-liquid two-phase flow and its numerical research are concluded，and the CFD
numerical methods and the results of flue gas evaporation technology are summarized. It provides theoretical basis and
technical support for the following engineering practices of flue gas evaporation technology，and proposes a development
direction for it.

Key words: desulfurization wastewater, zero discharge, flue gas evaporation, CFD numerical simulation, low-temperature flue duct evaporation technology