中文摘要：

为了对化工动态系统进行快速的全局优化，结合并加强迭代动态规划算法和一阶梯度算法的优势，同时利用随机搜索和定向搜索，提出了基于一阶梯度算法的迭代动态规划算法，通过2个化工生产实际例子应用，证明了该算法具有高效、高精度、全局性好等特点。

英文摘要：

To get the global optimization of chemical engineering dynamic system rapidly, an iterative dynamic programming algorithm based on first order algorithm was proposed. This used both stochastic search and deterministic search, which combined the advantages of it programming algorithm and first order gradient algorithm. Then the algorithm was applied examples of chemical producing. The results proved that the algorithm had advantages of efficiency and global optimization. eratlv improved algorithm e dynamic to two practical precision, highefficiency and global optimization.