Process for epoxidation of propylene

In a process for the continuous epoxidation of propylene with hydrogen peroxide, comprising: a step a) of continuously reacting propylene with hydrogen peroxide in the presence of a titanium zeolite epoxidation catalyst to provide a liquid reaction mixture comprising propylene oxide; determining the amount of molecular oxygen formed in step a); regenerating the titanium zeolite catalyst when the molar ratio of molecular oxygen formed in step a) to hydrogen peroxide fed to step a) exceeds a preset threshold; and repeating step a) with the regenerated titanium zeolite. 在用过氧化氢来连续环氧化丙烯的方法中，包括：步骤a)，在钛沸石环氧化催化剂的存在下使丙烯与过氧化氢连续反应以提供包含氧化丙烯的液体反应混合物；测定步骤a)中所形成的分子氧的量；当步骤a)中所形成的分子氧与进料至步骤a)的过氧化氢的摩尔比超过预设阈值时，再生所述钛沸石催化剂；并且用再生的钛沸石重复步骤a)。