基于循环经济的流程工业企业物质流建模与仿真

发布时间：2018-10-15 13:19

【摘要】：流程工业属于资源消耗高、污染排放量大的行业。目前,发展循环经济,探索降低资源消耗与环境污染的途径,做好企业内部物质循环,是流程工业企业的迫切需求。本文将物质流分析方法与Petri网方法结合起来,给出一种从物质流分析模型到Petri网模型逐步形式化的建模方法,基于该方法实现某盐湖化工企业生产系统的物质流建模,并利用Matlab中Stateflow工具实现对模型的仿真运行,达到对企业生产过程的物质流进行量化分析和动态模拟的目的。研究结果表明,采用物质流分析与混杂Petri网相结合的逐步形式化建模方法,使所建模型既可以清晰直观地描述出错综复杂的物质流动过程,量化企业物质利用情况,又可以体现出物质流动过程的连续性受生产过程离散操作的影响,为企业进行循环经济的量化评估与决策制定提供了方法及依据,有助于实现整个过程物耗与污染的降低,减少故障发生率,促进流程工业企业获得经济和社会效益。本文结合案例分析,进一步突出了建模方法的应用价值。研究认为,对于流程工业企业,要提高物质利用效率、减少环境污染排放,关键在于对物质的流动情况、消耗强度以及污染排放结构的把握,这样才能加强本企业范围内物质循环利用,进而可以推动与企业乃至社会之间的物质循环。最后,针对循环经济系统的特点,文章提出将能量流与信息流考虑在内,构建物质流、能量流与信息流的耦合Petri网模型,并进一步改进仿真方法,增加仿真过程的可控性等建议。
[Abstract]:The process industry belongs to the industry with high resource consumption and high pollution emission. At present, developing circular economy, exploring ways to reduce resource consumption and environmental pollution, and doing well internal material circulation are the urgent needs of process industry enterprises. In this paper, the material flow analysis method is combined with the Petri net method, and a modeling method from the material flow analysis model to the Petri net model is presented step by step. Based on this method, the material flow modeling of the production system of a certain salt lake chemical enterprise is realized. The simulation of the model is realized by using the Stateflow tool in Matlab, and the purpose of the quantitative analysis and dynamic simulation of the material flow in the production process of the enterprise is achieved. The results show that the model can describe the complicated material flow process clearly and intuitively, and quantify the material utilization of the enterprise by using the step-by-step formal modeling method combined with the material flow analysis and hybrid Petri net. It can also reflect that the continuity of the material flow process is affected by discrete operation of the production process, which provides the method and basis for the quantitative evaluation and decision-making of circular economy, and helps to reduce the material consumption and pollution in the whole process. Reduce the incidence of failures and promote the economic and social benefits of the process industry enterprises. Based on the case study, the application value of modeling method is further highlighted in this paper. In order to improve the efficiency of material use and reduce the emission of environmental pollution, the key to improve the efficiency of material utilization and reduce the emission of environmental pollution lies in the grasp of the flow of materials, the intensity of consumption and the structure of pollution emissions. Only in this way can we strengthen the material recycling within the scope of the enterprise, and then promote the material circulation with the enterprise and the society. Finally, according to the characteristics of circular economy system, this paper proposes a coupling Petri net model of material flow, energy flow and information flow, which takes energy flow and information flow into account, and further improves the simulation method. To increase the controllability of the simulation process and other suggestions.
【作者单位】：北京信息科技大学经济管理学院;
【基金】：国家科技支撑计划项目“循环经济试验区产业集群服务平台关键技术研究”(编号:2012BAH10F01)
【分类号】：F274;F124.5

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