Heat And Mass Transfer Characteristics Research Of Regeneration Process Of Lithium Bromide Solution Under Impinging Atomization Conditions

In order to improve the regeneration efficiency of the Li Br solution in the solution dehumidification technology,based on the theory of heat and mass transfer in gas-liquid two-phase flow,the experimental device of target type impinging atomization solution regeneration was designed,the atomization effect and atomization diffusion angle of the atomization device were analyzed.Through the experiment,the effects of initial solution temperature and concentration,air flow rate,liquid gas ratio on the regeneration performance evaluation index which including exchanging heat quantity,heat transfer efficiency,regeneration amount and regeneration efficiency were analyzed.The mathematical model is established using the volume heat and mass transfer coefficient,the numerical simulation is completed by MATLAB programming,the numerical results are contrasted verification with the experimental data.The results show that:Compared with the conventional packing regeneration and falling film regeneration,the impinging spray solution regeneration has higher heat and mass transfer specific surface area and heat and mass transfer efficiency,the regeneration performance of the solution is improved effectively.The numerical solution of the mathematical model is basically consistent with the experimental results.The experimental results of this paper can provide the basic data for the regeneration of impinging atomization,and the mathematical model can provide some reference value for the numerical simulation of gas-liquid mass transfer under the condition of impinging atomization.