Research On The Separation Performance Of The High-speed Flow Spray Gas-liquid Reactor

Oxygen iodine chemical laser is a short-wave chemical laser,which is widely used in military,industrial and various civil industries.Singlet oxygen generator is an important component of oxygen iodine chemical laser,so the working performance of singlet oxygen generator can directly affect the efficiency of chemical oxygen iodine laser.At present,improving the efficiency of gas-liquid separation in the generator is the key of the spray generator.The main research work of this paper is as follows:(1)In view of the problem of water vapor in the air flow and inadequate of gas capacity of the spray gas-liquid reactor,the high-speed flow spray gas-liquid separator is designed,the high-speed flow spray gas-liquid separator has a step-shaped cylinder-shaped shell,and the internal has a rotor with nozzle and a stop ring.Sprayed liquid squirted by the nozzle under a certain pressure into the separation cavity,gas and liquid in the rotation axis high-speed rotation of the formation of the centrifugal force field meet,then the gas and spray liquid react.It greatly improved the contact surface area,gas and liquid reaction is more rapid,chemical reaction efficiency is higher,while the liquid separation after two levels of drainage outlet,the exist of the liquid ring can effectively block the water vapor in the air flow,greatly improve the separation efficiency.(2)In this paper,the CFD method is used to study the flow of the gas-liquid reactor,the calculation model is established for the reactor,the motion characteristics of the separation efficiency and continuous phase flow field and discrete phase of the liquid particles in the gas-liquid reactor are studied,and the influence of structural,physical and operational parameters on the separation performance of the gas-liquid reactor is analyzed systematically,and the separation characteristic curve is obtained.The simulation results show that the gas-liquid reactor can achieve 100% separation efficiency to 90μm droplets at 3000/min speed and 5mol/s gas volume,no water vapor in the air flow,and the separation time is within 5ms.The newly designed discharge structure discharges 1.4 times faster than the previous equipment.(3)Set up an experimental platform,analyze the performance of the experimental equipment under different parameters,compare the data of the experimental process and the simulation process after the experiment is completed,and verify the gas-liquid separation performance of the high-speed flow centrifugal aerosol gas separator studied.The experimental results are more consistent with the simulation,the contact area of the gas and liquid in the high-speed flow spray gas-liquid separator is large,the spray effect is good,the surface area of the reaction is increased,the gas-liquid two-phase rapid response provides the condition,the gas capacity volume of the newly designed barrel structure is increased by 10 times,and the droplets-carrying phenomenon is reduced by 20%.The comprehensive research shows that the high-speed flow spray gas-liquid separator designed in this paper meets the required capacity,separates quickly,and can meet the gas-liquid separation performance required by the singlet oxygen generator.It provides guiding significance for the development of singlet oxygen generator.(4)In view of the short uptime of the equipment in the course of experimental research,the structural improvement design was carried out again to overcome its defects,and the feasibility of the experiment was demonstrated from the simulation.The equipment has been perfected.Numerical simulation was established for the improved equipment,and the simulation results showed that the efficiency of the improved equipment separation was further improved.The air flow does not contain water vapor,the gas liquid reactor at 10000r/min speed can achieve 100% separation for more than 10μm droplets.