Bubble generator, reactor and method for preparing propylene carbonate by absorbing carbon dioxide through epoxypropane

The invention relates to the technical field of chemical engineering, and discloses a bubble generator, a reactor, a microbubble enhanced gas-liquid reaction system and a method for preparing propylene carbonate by using epoxypropane to absorb carbon dioxide, and the method comprises the following steps: adding a reaction solution composed of epoxypropane, a catalyst, an auxiliary agent and a solvent propylene carbonate into the reactor; a bubble generator is arranged in the reactor, carbon dioxide raw material gas forms carbon dioxide microbubbles through the microbubble generator, and then the carbon dioxide microbubbles and a reaction solution are subjected to a contact reaction at a certain temperature and pressure to prepare propylene carbonate. According to the invention, CO2 microbubbles suitable for reaction are generated under high temperature and high pressure through the position of the bubble generator and the design cooperation of each branch pipe of the bubble generator, the ...