碳捕捉对电石渣-钢渣复合相变储热材料性能的影响

doi:10.19799/j.cnki.2095-4239.2023.0683

储能科学与技术 ›› 2023, Vol. 12 ›› Issue (12): 3690-3698.doi: 10.19799/j.cnki.2095-4239.2023.0683

碳捕捉对电石渣-钢渣复合相变储热材料性能的影响

杨洋¹(), 熊亚选¹(), 任静², 赵彦琦³(), 李烁¹, 田曦¹, 丁玉龙⁴

^1.北京建筑大学供热供燃气通风及空调工程北京市重点实验室，北京 100044
^2.北京中建建筑科学研究院有限公司，北京 100076
^3.南京工业大学能源科学与工程学院，江苏南京 211816
^4.伯明翰大学伯明翰储能中心，伯明翰 B15 2TT

收稿日期:2023-09-29 修回日期:2023-10-15 出版日期:2023-12-05 发布日期:2023-12-09
通讯作者: 熊亚选,赵彦琦 E-mail:562532701@qq.com;xiongyaxuan@bucea.edu.cn;zhaoyanqi456@126.com
作者简介:杨洋(1997—)，男，硕士研究生，主要从事固体储热研究，E-mail：562532701@qq.com；
基金资助:
国家自然科学基金(52006008);北京市教委科研项目(KM201910016011);北京建筑大学科学研究基金(Z13086)

Effects of CO₂ capture on carbide-steel slag shape-stable phase-change composites

Yang YANG¹(), Yaxuan XIONG¹(), Jing REN², Yanqi ZHAO³(), Shuo LI¹, Xi TIAN¹, Yulong DING⁴

^1.Beijing Key Lab of Heating, Gas Supply, Ventilating and Air Conditioning Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
^2.Beijing Building Research Institute CO. , LTD. of CSCEC, Beijing 100076, China
^3.School of Energy Science and Engineering, Nanjing Tech University, Nanjing 211816, Jiangsu, China
^4.Birmingham Center for Energy Storage, University of Birmingham, Birmingham B15 2TT, UK

Received:2023-09-29 Revised:2023-10-15 Online:2023-12-05 Published:2023-12-09
Contact: Yaxuan XIONG, Yanqi ZHAO E-mail:562532701@qq.com;xiongyaxuan@bucea.edu.cn;zhaoyanqi456@126.com

摘要/Abstract

摘要：

为资源化利用工业固废，降低储热系统成本，选取电石渣和钢渣1∶1混合进行CO₂捕集和封存，将封存CO₂的电石渣-钢渣混合材料作为骨架材料制备7种不同配比的NaNO₃/固碳电石渣-钢渣复合相变储热材料。通过热重分析法探究电石渣-钢渣混合材料的固碳性能，利用差示扫描量热法、高温热冲击法、X射线衍射法、电子显微法表征其储热性能、热循环稳定性、化学相容性和微观结构。结果表明，电石渣-钢渣混合材料的固碳率为24.48%；最佳热性能样品CC-SC4中NaNO₃、电石渣和钢渣的质量比为2∶1∶1，100～400 ℃工作温度内储热密度达到444.2 J/g，热导率为1.057 W/(m·K)，各组分间具有良好的化学相容性；样品CC-SC4经历1440次加热/冷却循环后仍具有优异的储热性能。

关键词: 工业固废, 骨架材料, 复合相变储热材料, 固碳, 储热性能, 热循环稳定性

Abstract:

To achieve sufficient utilization of industrial solid waste and reduce the cost of thermal energy storage (TES) systems, a mixture of alkaline solid waste of carbide slag (CS) and steel slag (SS) is selected at a 1∶1 ratio for CO₂ capture and sequestration. In addition, seven types of carbon-captured shape-stable phase-change composite materials (CCSMs) with different ratios of NaNO₃/CS-SS were prepared by combining CS and SS as the skeleton materials after CO₂ sequestration. Furthermore, thermogravimetric analysis was conducted to characterize the carbon sequestration properties of the CS-SS hybrid materials. Moreover, the TES performance, thermal cycling stability, chemical compatibility, and microstructure of CCS were characterized using differential scanning calorimetry (DSC), high-temperature thermal shock method, X-ray diffraction (XRD) analysis,and scanning electron microscopy. The results indicate that the carbon-sequestration rate of the CS-SS hybrid material is 24.48%. Furthermore, the mass ratio of NaNO₃, CS, and SS in the best thermal performance sample of CC-SC4 was 2∶1∶1, with its thermal storage density reaching 444.2 J/g at a working temperature of 100—400 ℃, thermal conductivity of 1.057 W/(m·K), and chemical compatibility among the components. Sample CC-SC4 exhibited excellent thermal storage performance after 1440 heating/cooling cycles.

Key words: industrial solid waste, skeleton material, shape-stable phase change composite, carbon capture and storage, thermal energy-storage performance, thermal cycling stability

中图分类号:

TB 332

杨洋, 熊亚选, 任静, 赵彦琦, 李烁, 田曦, 丁玉龙. 碳捕捉对电石渣-钢渣复合相变储热材料性能的影响[J]. 储能科学与技术, 2023, 12(12): 3690-3698.

Yang YANG, Yaxuan XIONG, Jing REN, Yanqi ZHAO, Shuo LI, Xi TIAN, Yulong DING. Effects of CO₂ capture on carbide-steel slag shape-stable phase-change composites[J]. Energy Storage Science and Technology, 2023, 12(12): 3690-3698.

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样品	成分/%
样品	CaO	SiO₂	Fe₂O₃	Al₂O₃	MgO	Others
电石渣	94.42	3.05	0.17	1.35	0.28	0.73
钢渣	11.09	25.736	37.62	7.164	2.048	16.342

样品	相变材料/%	工作温度/℃	储热密度/(J/g)	参考文献
NaNO₃/CS-SS	50	100～400	444.2	本工作
NaNO₃/diatomite	70	20～370	644.39	[23]
NaNO₃/SIA	50	100～400	409.25	[16]
NaNO₃/SCA	50	100～380	325.91	[15]

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碳捕捉对电石渣-钢渣复合相变储热材料性能的影响

Effects of CO₂ capture on carbide-steel slag shape-stable phase-change composites

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样品	CC-SC1	CC-SC2	CC-SC3	CC-SC4	CC-SC5	CC-SC6	CC-SC7
混合骨架材料/%	20	30	40	50	60	70	80
NaNO₃/%	80	70	60	50	40	30	20
烧结后宏观形貌

碳捕捉对电石渣-钢渣复合相变储热材料性能的影响

Effects of CO2 capture on carbide-steel slag shape-stable phase-change composites

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Effects of CO₂ capture on carbide-steel slag shape-stable phase-change composites