Slurry bed loop reactor and use thereof

Abstract

The present invention relates to a slurry bed loop reactor comprising a riser and at least one downcomer (), wherein two ends of the riser are connected to two ends of the downcomer () via lines () and (), respectively. The riser comprises a reaction section () and a settling section () with an increased tube diameter disposed on the reaction section (). A gas outlet () exists at the top of the settling section (). Each of the downcomers () is divided into a filtrate section () and a slurry section () by filter medium (), wherein the filtrate section () is connected to a liquid outlet (); two ends of the slurry section () are respectively connected to two ends of the riser, and the filtrate region () may further be connected to a back purging system. When used in a gas-liquid-solid three phases reaction system, the reactor can realize successive separation of gas, liquid and solid particles in slurry, and realize the back purging regeneration of filter tubes without influencing the reaction processes. In addition, said reactor has the advantages of high separation efficiency, simple structure, flexible and easy operation.