Recovery device for reaction kettle

The utility model discloses a recovery device for a reaction kettle, which comprises a reaction kettle body, an exhaust port is arranged at the top of the reaction kettle body, an exhaust pipeline is connected to the exhaust port, a plurality of temperature control liquefaction components are distributed on the exhaust pipeline at intervals, a material storage shell is arranged on a discharge port of each temperature control liquefaction component, and a plurality of material storage holes are formed in the material storage shell. A backflow pipeline is arranged between the material storage shell and the reaction kettle body, a flow control assembly for controlling flow is arranged on a discharge port of the material storage shell, and vaporized substances are conveyed into a temperature control liquefaction assembly through an exhaust pipeline. The liquefaction temperature of a corresponding substance is preset for the temperature control liquefaction assembly, so that the corresponding substance is converte