Tail gas treatment method for producing epoxypropane through cumene co-oxidation method

The invention discloses a tail gas treatment method for producing epoxypropane through a cumene co-oxidation method. According to the invention, the output end of peroxidation reaction tail gas and absorbed tail gas are subjected to cross heat exchange; the tail gas having been subjected to heat exchange enters a first-stage condenser and then enters a gas-liquid separation tank for separation after being condensed; a separated gas phase is connected with a second-stage condenser for copious cooling again and then enters the gas-liquid separation tank again; the further separated gas phase is connected with an absorption tower, and a special absorbent is adopted to absorb organic matters in the tail gas; an absorption liquid enters a desorption tower for desorption of cumene; and an absorbent at the bottom of the desorption tower is cooled and then returns to the absorption tower for recycling; and thus, cumene is recycled from the cumene peroxide tail gas, the cumene loss of a device is reduced, and the atom