The core of energy heavy chemical industrial park

The energy heavy chemical industry park is based on the abundant local resource reserves, with the development of the energy heavy chemical industry as the core, industrial agglomeration as the carrier, and the construction of the industrial chain network as the means, and the ecological transformation of the manufacturing system as the driving force. The industrial park that aims to realize the closed loop of matter and the use of energy cascades is the highest form of eco-industrial park. It has the following features: rich resource reserves within the region; large area of ​​park development (generally above 10 hm); sharing of infrastructure; clear division of functions; core enterprises generally have large investment scale, serious pollution, strong dependence on resources, and large consumption The agglomeration enterprises are closely connected with the flow of materials and energy and the undertaking as a link; they have strict environmental standards and restrictions for the implementation of the park environment; and they jointly have an administrative unit that provides necessary infrastructure, services, and management for the enterprises entering the park. .

As an important endogenous system of the compound system of energy heavy chemical industrial parks, the environmental system has important functions of discovering, controlling, and guiding healthy development of the park. At the same time, it is also an important evaluation and observation and control system at different stages of development of the park. The analysis and evaluation of the system will help managers discover the problems in the development of the park and timely control and guide the healthy development of the park through the adjustment of policies or macro strategic decisions. At the same time, quantitative research on environmental systems will help managers plan more scientifically and construct public infrastructure in the park, thus contributing to the continuous improvement of the park's environmental systems.

Determine the proportion of investment in production, investment in science and technology, investment in environmental protection, investment in sewage treatment, investment in waste gas treatment, investment in solid waste treatment, and other indicators as regulatory parameters, conducted simulation control, and concluded that the park's environmental management is relatively optimal. Program.

1 Research Areas and Research Methods 1.1 Research Area Jinjie Industrial Park is an important part of the energy and heavy chemical industry base in northern Shaanxi with an area of ​​16km2. The region is rich in natural resources such as coal, quartz sand and natural gas. The area is located in the hinterland of Loess Plateau in northern Shaanxi and the transition zone of Maowusu Desert in northern Shaanxi. It is a semi-arid continental climate with an annual average precipitation of about 441.2mm and an average evaporation of 2111.2mm. Its unique topography and climate characteristics, The ecological environment is very fragile.

(2) Economic Subsystem The economic sub-system is a power subsystem. It establishes an eco-industry chain network among various industries to achieve material closed-loop, cascade energy utilization, discharge of exhaust gas, discharge of wastewater, and reuse of solid waste. At the same time, through the environmental protection investment system, it also manages and controls the overall environmental system within the park, and coordinates the development of the environmental system and the economic system. The subsystem uses the total industrial output value of the park as the state variable; the increase value of the total industrial output value and the reduction value of the total industrial output value are taken as the rate variable. The following is the economic subsystem equation: Park Industrial Output Value (GYZCZ) Production Investment (SCTZ) Technology Investment (KJTZ) Total Investment in Environmental Protection (HBZTZ), where gldl is the labor ratio, sctzl is the proportion of productive investment, and kjtzl is the science and technology investment Ratio, hbztzl is the proportion of environmental protection investment, HJWRD is the relative degree of environmental pollution.

(3) Environmental Subsystem The environmental subsystem belongs to the restraint system and is also the evaluation subsystem for coordinated development of economic subsystems, population subsystems, and ecosystems. Resources are the foundation for the establishment and development of energy heavy chemical industrial parks and are the core The impact of the system and resources on the system is mainly reflected in the impact of the three waste emissions on the environmental subsystems. Therefore, the structure of the environmental system is based on the resource system, including the sewage treatment subsystem, the air pollution treatment subsystem, and the solid waste pollution treatment subsystem. composition. The impact of resources on the environment is also contained in these three subsystems.

2.2 Model test The purpose of the test of the system dynamics model is to verify whether the established model reflects the essential characteristics of the system and some of the main features [10]. Because the park is shorter in terms of construction and operation time, the yearbook and the With reference to relevant information, this paper selects the total population of the park, the total industrial output value of the park, the discharge of the production wastewater, and the total amount of wastewater as the representative. Starting from the year 2000, the output predicts the simulation results in 2005, and compares the error with the historical data 2.3. Based on the principle of determining the control variables and the simulation of the natural process of the system, the simulation selected the proportion of productive investment, the proportion of science and technology investment, and the proportion of environmental protection investment (proportion of production, technology, and environmental protection investment in the park's GDP); the sewage treatment investment rate and waste gas treatment. The investment rate, investment rate of solid waste treatment (proportion of sewage, waste gas, and solid waste treatment investment in environmental protection investment) and other indicators are used as the control variables. The time boundary is set to be 20052015, and 2005 is the base period of the simulation. 1. Time step For 1a, simulate.

3 Conclusion Through simulation research, we can see that Scheme 3 is the relative best plan for environmental management in Jinjie Industrial Park. It can not only enable the economy to achieve rapid development, but also promote the coordinated development of economy, population, and the environment. Moreover, various variables are limited to a moderate range and can be achieved through hard work. Therefore, Jinjie Industrial Park must adopt the following measures in environmental management: First, rationally adjust the proportion of investment in production, science and technology, and environmental protection, appropriately reduce the proportion of productive investment, and increase the proportion of science and technology investment and environmental protection investment. The increase in the proportion of investment in science and technology will, at the macro level, facilitate the improvement of water technology advancement factors and resource utilization technological advancement factors, thereby increasing the stock and supply capacity of water resources, and at the same time, improve the efficiency of resource use; the micro level will encourage companies to develop and implement advanced technologies. The recycling economy and technology will improve the recycling rate of resources and reduce the emissions of the three wastes, so that the environmental system will be continuously improved. The increase in the proportion of environmental protection investment will help the park to control and improve environmental pollution. The second is to rationally adjust the proportion of investment in the treatment of sewage, waste gas and solid waste, and strengthen the infrastructure construction of the three wastes treatment, so as to lay a foundation for the construction of a complete three-waste recycling and treatment system.

The ecological transformation of the manufacturing industry, especially the energy heavy chemical industry, is a key area for sustainable human development in the 21st century. The eco-industrial park is the highest form of the ecological transformation of the manufacturing industry. The energy heavy chemical industry park is transformed as an ecological manufacturing industry. In its primary form, in its establishment and development process, it must actively introduce the concept of environmental management, and establish a scientific and standardized environmental management decision-making mechanism, so as to establish a basic platform for the ecological transformation of the park, so as to be able to control and guide the ecological transformation of the park benign For development, this article takes the Jinjie Industrial Park as an example and has conducted some exploratory research in this area. The research results show that the energy heavy chemical industrial park can realize the optimization and benign phase of the complex system in the park through the regulation of the investment system. Yang Yangfeng et al.: the simulation and regulation of environmental system dynamics in the energy heavy chemical industrial park; secondly, the investment system Regulation can be divided into two levels. One is the optimization of the structure of the investment system; the other is the optimization of the structure of the environmental protection investment subsystem.