CAJ | 학술논문

优化间歇式本体法生产聚丙烯工艺对提高产品质量和降低生产能耗具有重要的意义。利用小波多尺度分析功能研究一家大型液相小本体法生产工艺的升温曲线，通过对其进行去噪、重构、分解得到更真实的升温曲线，并对信号的近似和细节部分进行区分，确定各频带的信号形式和发生时间，结合液相本体法的工艺，分析各层信号与实际聚合工艺之间的关系。运用MATLAB软件中的小波分解系数灰度图来确定信号的能量的分布，验证各层信号特征与聚合过程工艺之间的对应关系，为下一步实现工艺优化提供理论基础。
우화간헐식본체법생산취병희공예대제고산품질량화강저생산능모구유중요적의의。이용소파다척도분석공능연구일가대형액상소본체법생산공예적승온곡선，통과대기진행거조、중구、분해득도경진실적승온곡선，병대신호적근사화세절부분진행구분，학정각빈대적신호형식화발생시간，결합액상본체법적공예，분석각층신호여실제취합공예지간적관계。운용MATLAB연건중적소파분해계수회도도래학정신호적능량적분포，험증각층신호특정여취합과정공예지간적대응관계，위하일보실현공예우화제공이론기출。
Optimizing the technology of batch liquid phase bulk polymerization of polypropylene (PP) is very important for improving quality of PP and decreasing the energy consumption. Wavelet transform was used to analyze temperature signal of liquid phase bulk polymerization of a large plant in China for its multi-scale analysis function. Through de-noising, reconstruction and decomposition of temperature signal, the approximate parts and detailed parts are separated and their form and time of different frequency bands are determined. The more realistic curve of polymerization processes was obtained. Combining with polymerization processes, relationship between signal of each level to the real polymerization technology was discussed. Gray image of energy coefficients in Matlab software was also applied to determine the signal energy distribution and check relationship between signal of each level to the real polymerization technology for providing good guides to the following industrial control and technical optimization.