Research On Modeling And Simulation Of Guigang Ecological Industrial Park Based On Petri Net

The dynamic model simulation and quantitative analysis of eco-industry park’s structureand function is an important means to solve the problems that exist in technology, structureand function of the eco-industrial park. This thesis takes the first eco-industrial park ofChina-Guigang Eco-Industrial Park as the research object, Petri nets as modeling tools andmakes use of the theory of Petri nets to build the Petri net model of Guigang eco-industrialpark, through the simulation and quantitative description of the model, this thesis can analyzethe dynamic performance and operational efficiency of the actual operation process, providingthe basis for optimization and improvement of eco-industrial park. The specific contents ofthis thesis are as follows:1. The quantitative analysis of eco-industrial park and the modeling and application ofPetri net at home and abroad were reviewed. Starting from the problems existing in theecological industrial park, and then combined with the ecological industrial park, Petri netsand markov chain theory knowledge to build Petri net model of Guigang eco-industry park.Analysis related properties of Petri net model.2. The ecosystem of Guigang eco-industrial park consists of six subsystems. For suchstructure characteristics, object-oriented Petri net was introduced as a modeling tool. Eachsubsystem was encapsulated as an object and the corresponding OPN model was built.Through the integration of all the objects and connections among them, OOPN model ofentire ecosystems was constructed. The construction of the model made the whole ecosystemmodular, graphical and structured, which reduced the size and the complexity of theecosystem.3. Simulate the actual situation of the resource utilization in Guigang eco-industrial park.First, analysis the material recycling network in eco-industrial park, based on this, constructthe generalized stochastic petri net model of the material recycling network in eco-industrialpark, find out the markov chain which is isomorphism with the generalized stochastic petrinet model, evaluate the coefficient utilization of critical resources and the operation efficiencyof key processing in eco-industrial park by using the related knowledge of markov chain, thus,provide guidance basis for the optimization and improvement of the eco-industrial park.4. In order to analysis the significant influence of Guigang eco-industry park onimproving the economic benefits, social benefits and environmental benefits, Petri net modelsof traditional sugar process, improved sugar process and sugar process of eco-industry parkare respectively structured. Besides, all the models are simulated through the simulationsoftware. By comparing the simulation results, put forward the optimization strategy ofrealizing resources decrement, product recycling and waste recycling.