The Coking Coal In Fluidized Bed Drying Dynamics Research And Numerical Simulation

Coking coal drying economy is one of the effective measures to enhance the utilization of coking coal. Fluidized bed drying technology with flexible operation, simple structure, high heat and mass transfer efficiency advantages obtained dried coal industry wide range of applications. In this paper, the three fixed bed and fluidized bed coking coal performed drying experiment kinetics study and numerical simulation, for coking coal fluidized bed drying technology to provide application support and reference data optimization has become the high water content of coking coal to solve problems effectively one of the measures.First static isothermal fixed bed coking coal drying experiment, to explore for coking temperature and particle size affect the drying rate, was found by heating temperature,particle size reduced coking coal can effectively improve the drying rate by Design-Expert software analysis results temperature on the drying rate is stronger than the diameter of the drying rate of the impact on the drying kinetics of discovery Page model MR = exp(-ktn)and the drying process of this experiment is very relevant, fitting correlation coefficient R2 in between 0.992-0.999, ?2 between 5.756E-6-0.0017.Then coking coal isothermal drying experiment through dynamic fluid bed dryer, discuss hot air temperature and hot air velocity drying rate impact for coking coal, we found that increasing the temperature of the hot air, increasing the speed of the hot air can effectively improve the drying rate, we analyzed the impact of temperature on drying rate is stronger than the wind speed affect the drying rate by Design-Expert software. Finally, through the fluid bed dryer was simulated using the software Barracuda to simulate the whole drying process, the experimental data obtained with the simulation results of error of less than 4%, indicating that this model is very relevant in this test bench, therefore, a fluidized bed dryer optimization and adjustment can refer to the simulation results Barracuda software.