Numerical Simulation And Calculation Of Thermal Performance In The Evaporative Cooling Flue Of A Steelmaking Convertor

The high temperature flue gas waste heat which was generated by steel convertor could not only recycle gas but also was rich in resources, so it had great significance to make full use of the waste heat. The combustion, mass and heat transfer process of the flue gas in evaporative cooling flue was very complicated. And it was of significance in optimizing the waste heat recovering equipment by mastering the thermal performance of the flue gas accurately. This thesis employed CFD numerical simulation technology to conduct the numerical simulation of the thermal performance parameters. The main contents and results were as follows:1) Conduct theoretical study of the numerical simulation of the flow, temperature fields and concentration distribution in evaporative cooling flue, and establish the physical model of the high temperature flue gas in evaporative cooling flue. Calculate the flow, temperature fields and concentration distribution of the flue gas after determine the boundary conditions, and master the basic rules of combustion, mass and heat transfer process in evaporative cooling flue.2) By using the same method, introduce numerical simulations to models under different conditions, and get the discipline of flow, temperature fields and concentration distribution changing with the volume of air entrainment, smoke dust and flue wall temperature, respectively.3) Based on the results of numerical simulations, propose an empirical engineering calculation model about thermal performance of evaporative cooling flue, and verify the validity of the model by comparing engineering calculation results with numerical simulation ones.