System for recovering waste heat of thermal desorption equipment to greenhouse to pretreat polluted soil

The utility model discloses a polluted soil pretreatment system for recovering waste heat of thermal desorption equipment to a greenhouse, which comprises a thermal oxidation chamber, one side of the thermal oxidation chamber is connected with a hot waste gas inlet, the lower part of the hot waste gas inlet is connected with a heat exchanger, the outer wall of the heat exchanger is provided with a cold air inlet, and the cold air inlet is connected with a cold air outlet. A heat exchanger is arranged on the outer side of the polluted soil pile body, a ventilation pipe is connected to one side of the heat exchanger, an air outlet pipe is connected to the tail of the ventilation pipe, the polluted soil pile body is arranged on the outer side of the polluted soil pile body, and a pretreatment greenhouse is arranged on the outer side of the polluted soil pile body. The waste heat of thermal desorption tail gas can be effectively utilized, the waste heat in the tail gas treatment process of equipment can be fully