Research On The Separation Performance Of The Rotary Spray Gas-liquid Reactor

This article gives an overview of the domestic and international development ofgas-liquid reactors for the production of singlet oxygen,and addresses the shortcomings of the large volume of liquids used in conventional jet reactors.It draws on the research results of rotary reactors and spray reactors.Based on this,we developed a rotary spray gas-liquid reactor and studied its separation performance.The novel gas-liquid reactor has a cylindrical outer shell body.A rotor is arranged along the central axis of the shell.Both ends of the rotor are connected to the flange of the end of the shell.The rotor is provided with blades and nozzles are installed.The liquid material enters the reactor from the inlet and is sprayed through the nozzle,and is atomized to form droplets,so that the surface area of the gas-liquid contact is greatly increased,and rapid reaction can be achieved.At the same time,the gas-liquid is rapidly separated under the centrifugal force provided by the rotation of the rotor.This paper selects 3D modeling software to create a reactor geometry model and uses Gambit for meshing.Computational fluid dynamics(CFD)method is used.The RNG two-equation model and MRF multiple reference system model in FLUENT software are used.In combination with the DPM discrete-phase model,the distribution of the continuous phase flow field in the reactor and the motion of discrete-phase particles were numerically simulated.The effects of reactor model parameters such as the helix angle of the reactor,the number of blades,the length of the blades,and the operating parameters such as the rotor speed were studied,and the structure of the reactor was optimized.In this paper,an experimental prototype was designed and manufactured.At the same time,an experimental platform was set up to test the operation of the experimental device under different conditions by changing the relevant structural parameters and operating parameters of the reactor,and compared with the relevant conclusions of numerical simulation to verify the study.The separation performance of rotary spray gas-liquid reactors.Through numerical simulation and experimental study,it is found that the nozzle spray of the rotary atomized gas-liquid reactor has a good effect,which can increase the specific surface area of the reaction and provide conditions for the rapid gas-liquid reaction.Centrifugal separation techniques achieve 100% separation of droplets larger than 10 ?m in diameter.Based on the comprehensive numerical simulation and experimental verification results,this paper believes that the rotary spray gas-liquid reactor can basically meet the required gas-liquid separation performance.