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The Real-Time Kinetic Parameters Inspecting System of Vinyl Chloride Polymerization Based on GC

Author: WuZhaoJun
Tutor: MaHongZhao
School: Zhejiang University
Course: Chemical Engineering
Keywords: Vinyl chloride polymerization kinetics model Gas Chromatography Programmable controller Industrial chromatography workstation Peak identification
CLC: O631.5
Type: Master's thesis
Year: 2010
Downloads: 26
Quote: 0
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Abstract


Traditional laboratory data processing is often greatly lags behind the experimental process , the urgent need for the modern laboratory experiments from the original offline experiment → data processing → ??Adjustments → retested ...... \the quality and efficiency of the experiments . The object of study - the polymerization of vinyl chloride is generally in the high- pressure state, often requires a large number of experiments , financial and material resources in order to get the polymerization kinetics data . The kinetic model based on the polymerization of vinyl chloride , continuous measurement by gas chromatography of the reactor vapor , to the programmable controller and computer online measurement of vinyl chloride polymerization conversion rate of the system is developed for the platform . Paper to vinyl chloride polymerization kinetics parameters online real-time detection system \processing , a unique method of peak identification - curve fitting and derivative combination of pattern recognition algorithms , and a new peak recognition sequence - first vertex identify peaks , and then to identify the beginning and end of the peaks , thereby identifying the peak area , thereby establishing a robustness of the spectrum peak detecting algorithm model . On the computer at the same time to achieve a set of industrial chromatography workstation based on this algorithm , the chromatography workstation has automatic peak identification and automatic data processing , automatic generation of reports and flexible data query functions . Chromatography workstation tracer butane peak area into the vinyl chloride polymerization kinetics model can be obtained kinetic data . The experiments show that the industrial chromatography workstation has better real-time and high accuracy precision , can be used to guide the initiator agent of choice , and the ratio of the experimental conditions , as well as the optimization of the ratio of raw materials , which on further deepening of vinyl chloride polymerization kinetics the theoretical study provides a good foundation .

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CLC: > Mathematical sciences and chemical > Chemistry > Polymer chemistry ( polymer ) > Polymer physics and physical chemistry of polymers > Polymerization,polycondensation reaction
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