高压工频热解扶余油页岩的温度场模拟

利用高电压工业频率电流加热油页岩，可以在油页岩内部形成等离子体的通道，利用产生的等离子体与导电通道碳化的内表面对油页岩进行加热，实现油页岩的原位裂解.本文采用有限元分析软件建立油页岩三维耦合模型，通过数值计算获得高压工频裂解油页岩的温度场分布.在电压为1000V，工业频率电流为5A时加热6min，油页岩电极中心部位的温度达到597℃，在电极附近30mm范围内，温度达到347℃，满足油页岩裂解需求;随电流的增加，相同时间内油页岩被有效加热的温度增加，并且有效热解的范围增大.从数值模拟结果分析可知，高电压工业频率电流加热裂解油页岩技术，升温速率快，能量有效利用率高.

Temperature Field Simulation of Fuyu Oil Shale Pyrolysised by High Voltage Industrial Frequency Technology

Using the high voltage industrial frequency current to heat oil shale， the plasma channels can be formed in oil shale. The in-situ cracking of oil shale is realized by heating the oil shale with the generated plasma and the carbonized inner surface of the conductive channel. In this paper， a three-dimensional coupled model of oil shale was established by finite element analysis software， and the distribution of temperature field during the high frequency oil shale pyrolysis was obtained by numerical calculation. When the voltage is 1000V and the current is 5A， the temperature at the center of electrode， after 6 minutes heating， reached 597℃， and the temperature at the areas around the electrode 30mm away reached 347℃， meeting the pyrolysis demand of oil shale. With the increase of current， the increased temperature of oil shale during the same heating time showed a steady rise， and the range of effective pyrolysis also went up. According to the results of numerical simulation， using the high voltage industrial frequency to heat oil shale can gain a fast heating rate and high energy efficiency.