Method for producing epoxypropane by using hydrogen peroxide and propylene

The invention relates to a method for producing epoxypropane by using hydrogen peroxide and propylene, which is mainly to solve the problems of a large amount of phenylethylene byproduct, low catalyst activity, short catalyst service life and unsafe production in the production of epoxypropane by using hydrogen peroxide as an oxidant. In the invention, the problem is better solved by adopting a technical scheme comprising the following steps: a) dividing catalyst bed layers in a fixed bed reactor into n sections which are connected in series for use, wherein n is an integer greater than 2; b) dividing fresh hydrogen peroxide into n parts, and supplying the n parts to the entrances of respective catalyst bed layers; c) dividing fresh propylene into n parts or supplying the fresh propylene to the entrance of a first catalyst bed layer directly; and d), leading the material flows from the exit of each of the catalyst bed layers except for the last catalyst bed layer to the entrance of a next catalyst bed layer, wherein a catalyst is titanium-containing zeolite, the mass space velocity of the propylene to all catalyst bed layers is 0.01 to 10/h, the total molar ratio of the propylene (C3H6) to the hydrogen peroxide (H2O2) is 1 to 20, the reaction temperature is 10 to 200 DEG C, and the reaction pressure is 0.05 to less than 1MPa. The method can be used in the industrial production of epoxypropane.