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甲醇法工艺过程的智能控制策略与工程实现
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摘要
甲醇法生产甲烷氯化物工艺技术以其特有的优势成为国际上采用的主流工艺。沪州北方化工有限公司拥有国内唯一具有自主的知识产权的甲醇法工艺,其产品质量已达到国际水平。
     甲醇法工艺的核心是一氯甲烷热氯化反应。由于热氯化反应器的反应过程具有高度的非线性,不确定性,时变和大滞后及多变量耦合等复杂特性,其模型化的研究尚未成熟,还不能用于实时控制,加之反应介质为强腐蚀,原料剧毒,目前的生产过程大多是手动操作,因此,控制精度很差,工艺参数无法优化,应用智能控制技术开发其生产过程控制系统的需求十分迫切。
     本文提出了用面向热氯化反应对象的实时专家智能控制系统来控制热氯化反应过程的控制思想。在分析了甲醇法工艺控制上的难点与特点的基础上,指出专家智能控制是甲醇法工艺控制的有效方法;研究了面向热氯化反应对象的实时专家控制系统和智能控制理论,提出了热氯化反应的人工智能专家控制策略;分析了一氯甲烷热氯化反应过程特性和工艺条件的优化,设计构造了热氯化反应过程的智能专家控制系统,并成功地应用于工程实际,取得了良好的经济效益。
Since its advantage, the processes for chlorinated methane have the most important place in the world. Using the process of methanol method whose knowledge copyright is owned by LuZhou North Chemical industry Ltd., the quality of product has reached international level.
    The core of the process of methanol method is the heat chlorination of monochloromethane. Because The reactor for heat chlorination characterize nonlinearity, indefiniteness, time-invariant, delay lag and multivariable coupled and reaction medium is corrodent and poisonous material, the research on its model has not matured and model which is used for real time control has not appeared. The reactor for heat chlorination is controlled by hands. So, control precision is poor, process parameter cannot be optimized equipment is corrode
    This design put forward the controlling thought, that is, using the real time expert control system to control heat chlorination reaction. First of all, it analyzed the difficulties and characteristics on the control of the processes for methane method, and pointed out that expert control is an effective method of the process of methanol method control; it studies the real time expert system facing heat chlorination reaction and the theory of intelligent control; put forward the artificial intelligent expert control tactic of heat chlorination reaction; it analyzed the feature of the reaction process of the heat chlorination of monochloromethane, process condition
    
    
    and preferred, designed and framed the artificial intelligent expert control system of the heat chlorination of monochloromethane process and gave the live controlling effect.
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