Study On Optimization Of Energy Saving And Emission Reduction Investment Decision In Thermal Coal Supply Chain

Under the background of global warming and energy shortage,carbon emissions caused by the burning of fossil energy are one of the main causes of global warming.China's rapid economic development is highly dependent on the supply and consumption of fossil fuels,which in turn leads to environmental problems such as air pollution and resource consumption.China's energy consumption is dominated by coal,and the power supply is mainly dependent on the heavily polluting coal fuel.The large amount of coal consumption in the thermal power industry has a significant impact on China's carbon emissions.This paper studies energy conservation and emission reduction in the supply chain of thermal coal.Based on the analysis of energy consumption and carbon emissions in the thermal coal supply chain,four energy conservation and emission reduction paths are proposed.Taking Shen Hua Group as an example,the system dynamics method is used to dynamically simulate the energy saving and emission reduction effects of different paths,and the energy saving and emission reduction measures of thermal coal supply chain are proposed.On the basis of system simulation,from the perspective of energy saving and emission reduction technology investment,a multi-objective optimization model for energy saving and emission reduction investment decision of the thermal coal supply chain was established.NSGA-II algorithm was used to design the algorithm,and Pareto solution set was obtained by programming on MATLAB.Combined with K-means clustering method and grey correlation projection method,the optimal solution was selected from the Pareto solution set,and the corresponding investment scheme of energy conservation and emission reduction technology was proposed,so as to optimize the energy conservation and emission reduction system of the whole thermal coal supply chain.The research conclusions are as follows:(1)According to the simulation results of system dynamics,the results show that the energy saving and emission reduction potential of the power generation link is greater than that of the other links.To reduce the standard coal consumption rate of power generation of coal-fired units,to increase the proportion of railway transportation in coal transportation,to reduce the power consumption coefficient in the process of coal mining,and to increase the investment in environmental protection,are the effective ways to save energy and reduce emission in the power coal supply chain.The effect of energy conservation and emission reduction is different among different paths,and the effect of energy conservation and emission reduction is the most obvious by reducing the standard coal consumption rate of power generation.(2)According to the multi-objective optimization results,the results show that the investment in energy saving and emission reduction technology is a relatively efficient way to save energy,which can significantly reduce the energy consumption level of the thermal coal supply chain.The investment in energy saving and emission reduction technology is an effective carbon emission reduction measure,which can reduce the carbon emission in the thermal coal supply chain to a certain extent.In the economic preference investment scheme,the thermal coal supply chain pursues the maximum economic benefit by increasing the coal capacity,and reduces the energy consumption and carbon emissions by increasing the cumulative effect of energy saving and emission reduction technology.For the environmental preference investment scheme,the thermal coal supply chain tends to pursue the minimization of energy consumption and carbon emissions,and to a large extent,it achieves the reduction of energy consumption and carbon emissions by substantially reducing the output of thermal coal.For the coordinated development scheme,energy conservation and emission reduction are achieved mainly through reducing the output of thermal coal and increasing the investment in energy conservation and emission reduction technology.All three investment schemes can reduce energy consumption and carbon emissions,optimize the allocation of energy saving and emission reduction technologies fundamentally,and promote the transformation of the thermal coal supply chain to a "green and low-carbon" production mode.