Energy System Improvement Of Yongcheng Economic And Technological Development Zone And Impact Assessment On Urban Air Quality

Industrial parks play an extremely important role in the rapid development of China’s economy.In 2013,there were 1,568 industrial parks at the national and provincial levels in the country,with output value accounting for more than 60%of the country’s total industrial output value and 50%of domestic GDP.As of 2018,the number of industrial parks at the national and provincial levels has increased to 2,543,which is still the backbone of China’s economic development.However,due to its huge resource and energy consumption,as well as intensive industrial production,numerous industrial parks also pose a huge threat to the local environment,causing a large number of emissions of greenhouse gases and atmospheric pollutants.Environmental pressure.From the perspective of energy utilization,there are three main factors affecting greenhouse gas and pollutant emissions:total energy consumption,energy consumption structure,and energy conversion efficiency.Therefore,the optimization and upgrading of the energy system of the industrial park is of great significance for its green and low-carbon development.This article takes the typical energy-intensive industrial park in Henan Province Yongcheng Economic Development Zone as the research object,grasps the operation of the park’s energy system through methods such as material flow analysis and emission inventory calculation,and obtains energy-related carbon dioxide emissions and air pollutants in the park.Emissions inventory.At the same time,five scenarios（baseline scenario,energy efficiency improvement scenario,energy cascade utilization scenario,renewable energy utilization scenario,and comprehensive scenario）were designed to quantify the energy conservation potential and CO₂ and air pollutant emission reduction potential of the park under different optimization scenarios Finally,the CALPUFF model is used to simulate the impact of different energy system optimization measures on urban air quality,so as to determine the best optimization scheme.The results show that:（1）The measures adopted in the three scenarios of energy efficiency technology improvement,energy cascade utilization,and renewable energy utilization can all achieve certain energy conservation and emission reduction effects.The former two have greater energy conservation and emission reduction potentials,and the latter are relatively small.（2）The comprehensive scenario combining the three scenarios has the best energy saving and emission reduction effect.The total energy saving is 12976 TJ.When converted into coal,it is equivalent to reducing 620 kt of coal consumption,accounting for 13.0%of the total energy consumption in 2017.The emission reduction potentials of SO₂,NO_x,PM₁₀,PM_2.5 and CO₂ are 693 tons,1532tons,133 tons,70 tons and 1.291 million tons,respectively,accounting for 8.9%,14.9%,4.6%,5.1%and 8.3%.（3）The simulation results of the CALPUFF model show that the four scenarios of energy system optimization all have a certain positive impact on urban air quality.Among them,the environmental benefits under the comprehensive scenario are also the best.The maximum decrease of SO₂ concentration reached 13.2μg/m³,and the emission reduction rate was approximately 3.8%;the maximum decrease of NO_x was 47.5μg/m³,and the emission reduction rate was 17.7%;the maximum decrease of PM₁₀ was only 1.1μg/m³,which decreased 0.46%;the maximum decrease of PM_2.5 is only 0.9μg/m³,and the emission reduction rate is 0.77%.The research results have certain reference significance for the improvement of the industrial park energy system and the development of enterprises,parks and cities.