论文部分内容阅读
为了研究运行工况对圆形楞涡流发生器CaSO4污垢特性的影响。采用数值模拟方法研究了布置圆形楞涡流发生器矩形通道内壁面CaSO4析晶污垢的沉积过程。主要分析了CaSO4溶液的质量浓度、壁面温度、入口速度和入口温度对污垢沉积率、剥蚀率和污垢热阻的影响。结果表明,随入口速度的增大沉积率和剥蚀率均增大,而污垢热阻值降低;随着壁面温度的增大沉积率、剥蚀率和污垢热阻均增大;随工质质量浓度的增大沉积率、剥蚀率和污垢热阻也是均增大;随入口温度的增大沉积率、剥蚀率和污垢热阻却基本不变。
In order to study the operating conditions of the circular fluffy generator CaSO4 fouling characteristics. The deposition process of CaSO4 crystallization on the inner wall of rectangular channel with circular fluffy vortex generator was studied by numerical simulation method. The effects of mass concentration of CaSO4 solution, wall temperature, inlet velocity and inlet temperature on the deposition rate, erosion rate and thermal resistance of fouling were analyzed. The results show that the deposition rate and denudation rate increase with the increase of inlet velocity, while the fouling resistance decreases. With the increase of wall temperature, the deposition rate, denudation rate and fouling resistance increase. With the increase of wall temperature, The deposition rate, the erosion rate and the fouling resistance are also increased. With the increase of inlet temperature, the deposition rate, the erosion rate and the fouling resistance are basically the same.