基于离散时间描述的电石法聚氯乙烯生产的计划优化  

Planning optimization of PVC production by calcium carbide method based on discrete time representation

作　　者：王宇红[1] 连雪 高小永 冯振辉 黄德先[3] 拜建勋 

机构地区：[1]中国石油大学(华东)信息与控制工程学院,山东青岛266580 [2]中国石油大学(北京)海洋工程研究院,北京102249 [3]清华大学自动化系,北京100084 [4]新疆中泰化学阜康能源有限公司,新疆乌鲁木齐830026

出　　处：《化工进展》2017年第5期1597-1604,共8页Chemical Industry and Engineering Progress

基　　金：国家自然科学基金(61273039);国家高技术研究发展计划(2013AA 040702)项目

摘　　要：目前,电石法聚氯乙烯(PVC)的计划优化问题少有研究。为解决这一问题,本文建立了电石法PVC全流程生产过程多周期的计划优化模型,即混合整数非线性规划(MINLP)。电石法PVC的全流程生产过程,包括原料供应、电石生产、盐水电解、氯乙烯(VCM)聚合以及PVC的交货。基于离散时间的表示方式,考虑原料成本、库存成本、交货延迟成本以及电耗成本,以成本最小为目标,合理分配生产设备的工作状态与生产速率、电量供应与原料供应等问题。为降低能量损耗,提高企业的经济效益,根据工业实际数据,给出了电石炉与电解槽非线性耗电特性的描述分析。最后,通过计划优化案例的求解和分析,所提出的全流程模型在能耗方面比单独优化降低了9.0%,总成本降低了8.1%,验证了所提模型的可行性。At present,polyvinyl chloride（PVC）by calcium carbide method had few studies in planning optimization. In order to solve this problem,a mixed integer nonlinear programming（MINLP）planning optimization model was established. A plant-wide process of PVC by calcium carbide method including raw material supply,calcium carbide production,salt water electrolysis,vinyl chloride（VCM） polymerization and the delivery of PVC was investigated in this paper. Considering the raw material cost,inventory cost,delay cost and electricity consumption cost,the working state and production rate of equipment,electricity supply and material supply were determined optimally based on the discrete time representation in order to minimize the total cost. According to the actual industry data,nonlinear electricity consumption characteristics of calcium carbide furnaces and electrolytic bathes were studied to reduce energy loss and improve the economic profits. A case study was provided to verify the effectiveness of the proposed model. The results showed that the proposed model is superior to the separate model in energy saving and total cost by 9.0% and 8.1% respectively.

关 键 词：电解 过程系统 聚合 聚氯乙烯 计划优化 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]