聚甲醛终产品中杂质含量的高低将直接影响下游产品的质量，粒料干燥设备干燥效果的好坏将直接影响聚甲醛终产品中甲醛的含量，因此，本文对工艺中现有干燥工段存在问题进行详细分析研究，提出优化改进方案，并对该方案进行可行性论证。“,”The quality of the downstream products depends on the final products of polyoxymethylene contain how much impurity content, and the drying effect of the drying equipment may have direct influences on the contents of polyoxymethylene in the final products. Therefore, based on the detailed analysis of the problems existing in the drying section, the paper proposes an optimizing scheme and demonstrates its feasibility.