Intelligent control method of PTA particle size in fine terephthalic acid production device

2004 
An intelligent method for controlling the granularity of PTA particles in refined terephthalic acid (PTA) production includes such steps as selecting the temp and discharge flow of hydrogenating reactor, and the liquid levels and temp of the first and the second crystallizers and using them as the input variables of the soft measuring system of granularity, creating the affection relation of primary operating parameters to PTA granularity, real-time continuous acquisition of procedure data as the soft measured values, determining the difference between settings and measured values, and automatically controlling the liquid levels and temp of the first and the second crystallizers.
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