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Recycling and utilization of calcium carbide slag-current status and new opportunities

文献类型：期刊论文

作者Gong, Xuzhong1,2,3; Zhang, Tong1,2,3; Zhang, Junqiang1,2; Wang, Zhi1,2; Liu, Junhao1,2; Cao, Jianwei1,2; Wang, Chuan4
刊名RENEWABLE & SUSTAINABLE ENERGY REVIEWS
出版日期2022-05-01
卷号159页码:20
ISSN号1364-0321
关键词Calcium carbide slag (CCS) Recycling Sustainable Natural limestone Reducing CO2 emissions
DOI10.1016/j.rser.2022.112133
英文摘要Coal is the dominant fuel in China to provide primary energy, and 70% of polyvinyl chloride is produced from coal-based CaC2. CaC(2 )reacts with water to produce acetylene and calcium carbide slag (CCS) as a solid waste for polyvinyl chloride production. Approximate 40 million tons of dry CCS are generated annually in China, among which only a small part is used in cement and as desulfurization agents. In contrast, most of the CCS is accumulated, occupying land and posing environmental risks. For the chlor-alkali industry, CCS can regenerate massive CaO through purification, molding, calcination. Thus, CCS can be used as raw material for CaC2 production, thereby realizing renewable and sustainable utilization of calcium resources. Therefore, the recycling of CCS decreases the need for limestone extraction, leading to reduced CO2 emission, energy consumption, and solid waste pollution. For example, if CaO is produced by CCS instead of natural limestone, 20 million tons of CO2 emissions can be reduced each year. While the massive CaO with high thermal strength is crucial for the CaC2 production in the electric arc furnace, enabling CCS recycling and sustainable utilization.
WOS关键词CO2 CAPTURE PERFORMANCE ; CONCENTRATED SOLAR POWER ; THERMOCHEMICAL ENERGY-STORAGE ; DIRECT AQUEOUS CARBONATION ; BLAST-FURNACE SLAG ; HYDRATION RESISTANCE ; COMPRESSIVE STRENGTH ; HIGHLY EFFICIENT ; CAC2 PRODUCTION ; THERMAL-DECOMPOSITION
资助项目Natural Science Foundation of China[U1610101] ; Chinese Academy of Sciences[IAGM-2019-A09] ; [2018-05293] ; [2020-04140]
WOS研究方向Science & Technology - Other Topics ; Energy & Fuels
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000786655500001
资助机构Natural Science Foundation of China ; Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/52982]  
专题中国科学院过程工程研究所
通讯作者Gong, Xuzhong; Wang, Zhi; Wang, Chuan
作者单位1.Chinese Acad Sci, Natl Engn Res Ctr Green Recycling Strateg Met Res, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Swerim AB, S-97125 Lulea, Sweden
推荐引用方式
GB/T 7714		 Gong, Xuzhong,Zhang, Tong,Zhang, Junqiang,et al. Recycling and utilization of calcium carbide slag-current status and new opportunities[J]. RENEWABLE & SUSTAINABLE ENERGY REVIEWS,2022,159:20.
APA Gong, Xuzhong.,Zhang, Tong.,Zhang, Junqiang.,Wang, Zhi.,Liu, Junhao.,...&Wang, Chuan.(2022).Recycling and utilization of calcium carbide slag-current status and new opportunities.RENEWABLE & SUSTAINABLE ENERGY REVIEWS,159,20.
MLA Gong, Xuzhong,et al."Recycling and utilization of calcium carbide slag-current status and new opportunities".RENEWABLE & SUSTAINABLE ENERGY REVIEWS 159(2022):20.

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来源：过程工程研究所

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