关键词: 固定床, 流体力学, 反应器, 气液两相流

Abstract: A new type of gas-liquid distributor with broken flow plate at the bottom of the distributor was designed. In the cold model experiment, crude oil and hydrogen was replaced by water and air. The experiment process is that water was pumped out from the water tank and flowed into the gas-liquid diffuser of the top of test tower after being measured by liquid flow meter. The gas-liquid flow were cooled by chilled box and flowed down through the distributor at the same time. The liquid entered the collecting device was guided into 17 numbered cylinders which were placed on the ground by rubber tubes. The left liquid entered the water tank. The gas was discharged into the atmosphere. Finally, the pressure drop was tested by U shaped tube differential pressure gauge. The distribute performance, pressure drop loss, operation flexibility of the vapor and liquid phases and distribution uniformity of the distributor was studied. The structural style parameters were also optimized and determined. Result showed the best technological conditions of the distributor were that the flow of liquid phase is 0.3m³/h, the flow of vapor phase is 20-30m³/h.

Key words: fixed-bed, fluid mechanics, reactors, gas-liquid flow