Study on Drying Moisture Control of Zhengtianwan Fluidized Bed Based on MSPC

目的：本文建立正天丸流化床干燥水分控制方法，实现对干燥生产过程的在线监控，监控正天丸水分终点放行节点。方法：采集多批次正天丸干燥生产近红外光谱数据，结合MSPC控制技术终点放行模型，实现对生产节点的判定。结果：建立的正天丸干燥生产终点主成分得分和霍特林T2轨迹图可识别干燥终点。结论：将干燥终点控制图可识别正天丸干燥全过程中的变化情况，具备判别生产终点的可行性。Objective: In this paper, a drying moisture control method of Zhengtianwan fluidized bed was established to realize on-line monitoring of the drying process and monitor the release node of Zhengtianwan moisture endpoint. Methods: The near-infrared spectrum data of multiple batches of Zhengtianwans drying production were collected, and the production nodes were determined by MSPC control technology endpoint release model. Results: The main component score of Zhengtianwan drying production end point and the Hotelling T2 trajectory diagram established could identify the drying end point. Conclusion: The drying end point control chart can identify the changes in the whole drying process of Zhengtianwan, and it is feasible to judge the production end point.