Numerical Simulation And Analysis Of Temperature Field Of Continuous Electric Furnace For Graphitization

With the development of world industry, graphite has been widely applied in industrial production. Graphitization bulk has excellent capacity of heat resistance, thermal conductivity, electrical conductivity, lubricity, chemical stability, plasticity, thermal shock resistance and other characters, so it is widely used in metallurgy, machinery, petroleum, chemical and other fields. The production of high-purity graphitization bulk is limited, and the price of high-purity graphitization bulk is high. Therefore, carefully studying the production technology of graphitization bulk is very significant.Compared with other graphitization bulk production technologies, continuous electric furnace for graphitization has the advantage of continuous production, low energy consumption, high production and product quality even. In the process, the main factors that affect the quality of graphite products are the maximum temperature of graphitization and graphitization zone temperature uniformity. Meanwhile, in order to achieve continuous electric furnace for graphitization production safety, it is necessary to consider whether the furnace wall, top and bottom wall temperature could meet the requirements of production safety. This article focuses on the study of the temperature field of continuous electric furnace for graphitization.Combining the finite element theory, the paper uses ANSYS simulation software to study and analyze the temperature field of the30t/d continuous electric furnace for graphitization. The purpose of the simulation is to get the temperature distribution of the high temperature region and the graphitization region, without the experimental basis, and to verify the safety of their daily production. Finally, this paper shows the corresponding experimental results, which proved the correctness of simulation.In addition, for different electrode spacing of the furnace body and different electrodes insertion depth in the furnace is simulated. So, This paper get the condition with the graphitization area of the higher temperature and the temperature distribution of the more uniform temperature. Provide the basis for the optimization of continuous electric furnace for graphitization.By the results of the numerical simulation shows that the graphitization area of Continuous electric furnace for graphitization is a approximate cylindrical region, which axis of symmetry is the axis of symmetry of the furnace center, its radius is0.87m, its vertical height is1.23m. The temperature of the graphitization zone to meet the desired temperature of calcined petroleum coke into graphite. The corresponding heating zone of the nesting circle of the furnace is the main heating zone of the continuous electric furnace for graphitization. The temperature of this region is relatively uniform. The center plane temp of the corresponding heating zone of the nesting circle of the furnace is264℃.In addition, according to "the simulation analysis of the changing distance between electrodes" and " the changing depth of electrode insertion", the electrode spacing slightly smaller(1/d=2.826), the material temperature of the graphitization zone is more uniform, the temperature is higher; when the electrode is inserted deeper in the furnace, the graphitization zone is bigger, the, temperature is higher, and the temperature distribution is more uniform, but we need to take into account the requirements of safe production, so the electrode insertion depth is h=1.8m, which is the optimal operating condition of the simulation in the furnace.