Recycling and product chain of coal-based solid waste
LI Huiquan,1,2,3, HU Yingyan1,2,4, LI Shaopeng1,2, LI Qiang1,2, ZHU Ganyu1,2, ZHANG Jianbo1,2, WANG Xingrui1,21. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, CAS, Beijing 100190, China 2. National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Beijing 100190, China 3. University of Chinese Academy of Sciences, Beijing 100049, China 4. China Enfi Engineering Corporation, Beijing 100038, China
Abstract : Large-scale recycling of coal-based solid waste has important practical significance for the sustainable development and ecological environment protection of the large-scale energy bases in northwestern China. In this study, the typical energy bases in northwestern China were taken as a research object. The principle of collaborative location of solid waste and industry in the region was applied in the analysis. Key technologies such as the use of coal-based solid waste to produce chemicals, environmental protection materials, and building materials were proposed. The key product chains of typical coal-based solid waste recycling such as calcium carbide slag, gasification slag, and spent catalysts were established. The results show that coal-based solid wastes such as calcium carbide slag, gasification slag, and spent catalyst can be used to prepare desulfurizers, water glass, catalysts, and other products with good performance through separation of impurities, phase control, and catalyst carrier refactoring. The products can be directly used in the production process of coal-electricity-chemical enterprises in the region. In the coal-based solid waste 90% of calcium, aluminum, and silicon can be effectively used, and the recycle rate of vanadium, wolfram, and titanium can reach over 90%. Residual carbon can be separated. The utilization efficiency of coal and water resources of the recycling product chain can be increased to 36% and 27%, respectively, which can reduce the emissions of three types of typical solid waste by more than 98%. The process can provide a new way for large-scale utilization of solid waste, and can realize the high efficiency utilization of coal and secondary resources in coal energy bases. Keywords:coal-based solid waste;calcium carbide slag;gasification slag;spent catalyst;product chain;northwestern China
PDF (5349KB)元数据多维度评价相关文章导出EndNote|Ris|Bibtex收藏本文 本文引用格式 李会泉, 胡应燕, 李少鹏, 李强, 朱干宇, 张建波, 王兴瑞. 煤基固废循环利用技术与产品链构建. 资源科学[J], 2021, 43(3): 456-464 doi:10.18402/resci.2021.03.03 LI Huiquan, HU Yingyan, LI Shaopeng, LI Qiang, ZHU Ganyu, ZHANG Jianbo, WANG Xingrui. Recycling and product chain of coal-based solid waste. RESOURCES SCIENCE[J], 2021, 43(3): 456-464 doi:10.18402/resci.2021.03.03
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