Remaining bromine blowing-out and recycling system for reaction kettle

The utility model relates to the technical field of bromination reaction equipment, in particular to a reaction kettle residual bromine blowing-out and recycling system which comprises a gas source tank, a reaction kettle, a receiving tank and an absorption tank, a gas source which does not react with bromine is arranged in the gas source tank, the gas source tank is communicated with the reaction kettle through a first pipeline, and the gas source tank is communicated with the reaction kettle through a second pipeline. The reaction kettle is communicated with the receiving tank through a second pipeline, and the receiving tank is communicated with the absorption tank through a third pipeline. According to the utility model, gas is blown into the reaction kettle through the gas source tank, bromine in the reaction kettle is blown out of the reaction kettle, a gas source which does not react with the bromine is adopted, the gas is prevented from influencing the reaction in the reaction kettle, and the bromine