中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 过程工程研究所
  3. 中国科学院过程工程研究所
A novel gas removal method for the removal of C2H2 in calcium carbide slag slurry by fine bubbles combined with air purging: performance, mechanism, and in situ bubble imaging analysis

文献类型：期刊论文

作者Meng, Ziheng1; Zhu, Ganyu1; Li, Huiquan1,2; Li, Shaopeng1; Yan, Kun1; Yang, Yue1
刊名SEPARATION AND PURIFICATION TECHNOLOGY
出版日期2023-03-01
卷号308页码:12
ISSN号1383-5866
关键词Calcium carbide slag Fine bubbles In situ bubble imaging Mechanism
DOI10.1016/j.seppur.2022.122987
英文摘要About 60% of carbon emissions in the cement industry come from the decomposition of limestone. As a key low -carbon technology of raw material substitution, calcium carbide slag (CCS, low-carbon calcareous material) can replace limestone to produce cement, desulfurizer, and other products, which can achieve carbon emission reduction and the upcycling of CCS. However, the release of residual C2H2 in CCS brings safety and environ-mental risks, which seriously restricts the upcycling of CCS. In this study, a novel gas removal method of fine bubbles (FBs) degassing was proposed for the removal of C2H2 in solid CCS particles, and an advanced in situ bubble imaging technology was used to investigate the performance and mechanism of C2H2 removal. The results indicated that approximately 70% of C2H2 (encapsulated C2H2) in CCS was difficult to remove by drying or slurrying. Under the optimal condition, the C2H2 removal efficiency was approximately 61.0%, and the amount of C2H2 released from the CCS slurry decreased by 92.9%. In the process of FBs degassing, large CCS particles in the CCS slurry were broken up into fine particles via the erosion mechanism, thus promoting the reaction of the encapsulated calcium carbide with water to produce C2H2. The generated C2H2 was dissolved in the slurry and could be quickly removed by FBs (<500 mu m) with a fast mass transfer rate under the slight negative pressure. This work provides a novel gas removal method for effectively removing C2H2 in CCS and avoiding security and environmental risks, provides technical support for the upcycling of CCS, and provides a reference for the sep-aration of other similar multiphase systems (e.g., gas-liquid/gas-liquid-solid, oil-liquid/oil-liquid-solid).
WOS关键词MICRO-NANO-BUBBLES ; TECHNOLOGY ; ACETYLENE ; OXIDATION ; CAO
资助项目Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Young Scientists Fund of the National Natural Science Foundation of China ; Na- tional Key R & D Program of China ; [IAGM-2019-A09] ; [22008247] ; [2018YFC1901502]
WOS研究方向Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:000910753600001
资助机构Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Young Scientists Fund of the National Natural Science Foundation of China ; Na- tional Key R & D Program of China
源URL[http://ir.ipe.ac.cn/handle/122111/56555]  
专题中国科学院过程工程研究所
通讯作者Zhu, Ganyu
作者单位1.Chinese Acad Sci, Inst Proc Engn, Natl Engn Res Ctr Green Recycling Strateg Met Reso, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Meng, Ziheng,Zhu, Ganyu,Li, Huiquan,et al. A novel gas removal method for the removal of C2H2 in calcium carbide slag slurry by fine bubbles combined with air purging: performance, mechanism, and in situ bubble imaging analysis[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2023,308:12.
APA Meng, Ziheng,Zhu, Ganyu,Li, Huiquan,Li, Shaopeng,Yan, Kun,&Yang, Yue.(2023).A novel gas removal method for the removal of C2H2 in calcium carbide slag slurry by fine bubbles combined with air purging: performance, mechanism, and in situ bubble imaging analysis.SEPARATION AND PURIFICATION TECHNOLOGY,308,12.
MLA Meng, Ziheng,et al."A novel gas removal method for the removal of C2H2 in calcium carbide slag slurry by fine bubbles combined with air purging: performance, mechanism, and in situ bubble imaging analysis".SEPARATION AND PURIFICATION TECHNOLOGY 308(2023):12.

入库方式： OAI收割

来源：过程工程研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。