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对直管气流干燥过程建立了沿干燥管高度动态变化的物料速度、物料湿含量、物料温度及空气温度、空气湿度、压力损失等参数的模拟数学模型，对其后续的旋风分离器的主要设计参数建立了简捷计算模型；最终以系统吨处理量的成本为目标函数得到了包括过程操作费用和设备费用在内的优化数学模型；并给出了模型的简单应用范围说明．
The simulation mathematical model of parameters such as material velocity, material moisture content, material temperature and air temperature, air humidity, pressure loss and so on was dynamically established along the height of the drying pipe for the straight pipe airflow drying process. The main design of its subsequent cyclone Parameter to establish a simple calculation model. Finally, the optimal mathematical model including process operation cost and equipment cost is obtained by taking the system cost of tonnage as the objective function. The simple application scope of the model is also given.