A rolling optimization method for bisphenol A crystallization process based on system operation mode

Abstract

The invention discloses a system operation mode-based bisphenol A crystallization process rolling optimization method and belongs to the chemical process manufacturing field. The bisphenol A crystallization process rolling optimization method of the invention includes the following four steps of: process data acquisition and pre-processing; second step, system operation mode construction; third step, mode-based batch data alignment; and fourth step, mode and quality index quantitative relationship establishment. According to the method of the invention, an optimal operating condition is solvedthrough a rolling optimization strategy; a statistical analysis algorithm is adopted to introduce the concept of modes into the optimization of a bisphenol A crystallization process; a traditional original variable form-based optimization method is transformed into a variable implied process operation mode-based optimization method; the defects of the traditional optimization method in data utilization can be eliminated; and the rolling optimization strategy is predicted and corrected, so that the operating condition can be corrected timely, and therefore, the method can adapt to complex working conditions.

Description

technical field [0001] The invention relates to a rolling optimization method for bisphenol A crystallization process based on a system operation mode, which belongs to the field of chemical process manufacturing industry. Background technique [0002] The bisphenol A crystallization process belongs to intermittent industrial production, there is no stable working point in the whole production process, and it has multiple operation stages and significant nonlinearity. The quality indicators of the bisphenol A crystallization process (such as crystal purity, crystal product particle size, raw material conversion rate, etc.) are closely related to the set operating state or operating trajectory. In order to keep the bisphenol A crystallization process at the optimal operating condition and achieve the desired control variable index, the traditional optimization strategy is to establish a mechanism model of the process and optimize the operating condition. [0003] However, th...

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Problems solved by technology

[0003] However, the crystallization process of bisphenol A is complicated, and it is very difficult and expensive to establish an accurate mechanism model.

Its intermittent production method also makes it difficult for most optimization methods to be directly used

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