School of Economics and Management, China University of Petroleum, Beijing 102249, China.
State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC), School of Environment, Tsinghua University, Beijing 100084, China.
Sci Total Environ. 2020 May 15;717:137114. doi: 10.1016/j.scitotenv.2020.137114. Epub 2020 Feb 6.
Studies on quantifying the energy conservation and emission reduction (ECER) effects of industrial symbiosis are mostly confined to micro-level industrial parks or regions, and few are on national level. Focusing on the symbiosis system formed by the iron and steel industry, the thermal power industry, the cement industry, and the social sector in China, this article aims to clarify the contribution of this nationwide industrial symbiosis system to China's total industrial ECER potential and to identify optimal symbiotic technologies that should be emphasized on from 2020 to 2030. By combining traditional bottom-up model and lifecycle material metabolism theory, this article simulates the technology structure of this symbiosis system. By clarifying the ECER mechanisms of different types of symbiotic technologies, this article evaluates the ECER effect of each symbiotic technology as well as the performance of the overall symbiosis system. The results show that: (1) this nationwide industrial symbiosis system can save 35.7 million tons of coal equivalent, and reduce 189 kt of SO emissions, 139 kt of NO emissions, and 64 kt of PM emissions. These ECER effects contribute to 18-43% of China's national industrial ECER targets, which are larger than the potential of promoting energy efficiency technologies and end-of-pipe technologies in each single industry; (2) reutilizing solid wastes from the thermal power industry and the social sector as cementitious materials, as well as recovering iron and zinc from metallurgical dust are key symbiotic fields between 2020 and 2030. Three types of differentiated technology promotion suggestions are put forward.
工业共生的节能与减排（ECER）效应量化研究大多局限于微观层面的工业园区或地区，很少有针对国家层面的研究。本文聚焦于中国钢铁工业、火力发电业、水泥工业和社会部门之间形成的共生系统，旨在阐明该全国性工业共生系统对中国总工业 ECER 潜力的贡献，并确定 2020 年至 2030 年期间应重点强调的最优共生技术。本文通过结合传统的自下而上模型和生命周期物质代谢理论，对该共生系统的技术结构进行了模拟。通过阐明不同类型共生技术的 ECER 机制，本文评估了每种共生技术的 ECER 效果以及整个共生系统的性能。结果表明：（1）该全国性工业共生系统可节约 3570 万吨标准煤当量，并减少 189 千吨 SO 排放、139 千吨 NO 排放和 64 千吨 PM 排放。这些 ECER 效应对中国国家工业 ECER 目标的贡献率为 18%-43%，大于每个单一行业中推广能源效率技术和末端治理技术的潜力；（2）在 2020 年至 2030 年期间，利用火力发电业和社会部门的固体废物作为胶凝材料，以及从冶金粉尘中回收铁和锌，是关键的共生领域。本文提出了三种类型的差异化技术推广建议。
