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<p>The synergetic evolution and assessment of pollutants and carbon reduction of industrial system by symbiotic regulation is the key scientific problem of eco-industrial transformation of industrial system. Based on actual production data from the typical iron and steel industries of Jiayuguan and Tangshan, this study explores the synergistic evolution of pollutant and carbon emission reductions in the iron and steel industry under three different scenarios (Retrospective, Current, and Developing) of the symbiotic regulation of 3Rs (Reduce, Reuse, Recycle) through exergy analysis and ecological network analysis. The results of the synergetic evolution show that the recycling of fuel gas is the main source of the 3Rs exergy flow. With the symbiotic regulation of 3Rs, the exergy loss of iron and steel industrial system decreases, and exergy efficiency increases from 70% to about 80%. Ironmaking has the largest exergy loss of about 6200&#xa0;MJ/tcs, which becomes the key to future regulation. Thermoelectricity is the most active component in terms of circulation (e.g., Detritivory Herbivory ratio of 3.32, 19.75, and 9484.24, respectively). The number of competition relationships decreases by 62.5%. In addition, 3Rs has little effect on robustness of the system. The symbiotic regulation of 3Rs drives the iron and steel industrial system toward eco-industrial transformation. The results could be benefit for policy development and green sustainable development in the industrial system.</p>

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Synergetic evolution of pollutants and carbon reduction of the iron and steel industrial system regulated by symbiosis of 3Rs

  • 期刊论文

  • 发表日期：

    2025年6月6日

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  • Jiayi Lu,
  • Hao Jin,
  • Jingmin Xing,
  • Zenghao Zhou,
  • Haopeng Chi,
  • Zongqian Zheng,
  • Cheng Xue,
  • Junnian Wu

摘要

The synergetic evolution and assessment of pollutants and carbon reduction of industrial system by symbiotic regulation is the key scientific problem of eco-industrial transformation of industrial system. Based on actual production data from the typical iron and steel industries of Jiayuguan and Tangshan, this study explores the synergistic evolution of pollutant and carbon emission reductions in the iron and steel industry under three different scenarios (Retrospective, Current, and Developing) of the symbiotic regulation of 3Rs (Reduce, Reuse, Recycle) through exergy analysis and ecological network analysis. The results of the synergetic evolution show that the recycling of fuel gas is the main source of the 3Rs exergy flow. With the symbiotic regulation of 3Rs, the exergy loss of iron and steel industrial system decreases, and exergy efficiency increases from 70% to about 80%. Ironmaking has the largest exergy loss of about 6200 MJ/tcs, which becomes the key to future regulation. Thermoelectricity is the most active component in terms of circulation (e.g., Detritivory Herbivory ratio of 3.32, 19.75, and 9484.24, respectively). The number of competition relationships decreases by 62.5%. In addition, 3Rs has little effect on robustness of the system. The symbiotic regulation of 3Rs drives the iron and steel industrial system toward eco-industrial transformation. The results could be benefit for policy development and green sustainable development in the industrial system.