碳中和背景下的钢渣碳酸化固碳路径研究

doi:10.3969/j.issn.1674-1951.2021.06.011

华电技术 ›› 2021, Vol. 43 ›› Issue (6): 86-91.doi: 10.3969/j.issn.1674-1951.2021.06.011

• 固碳与利用 • 上一篇

碳中和背景下的钢渣碳酸化固碳路径研究

张书繁¹(), 程星星¹(), 王鲁元²(), 张兴宇²(), 王志强¹^,^*()

1.山东大学能源与动力工程学院,燃煤污染物减排国家工程试验室,环境热工技术教育部工程研究中心,山东省能源碳减排技术与资源化利用重点试验室,济南 250061
2.齐鲁工业大学能源与动力工程学院,济南 250014

收稿日期:2021-04-26 修回日期:2021-05-18 出版日期:2021-06-25 发布日期:2021-06-25
通讯作者: 王志强
作者简介:张书繁（1997—）,男,黑龙江海伦人,在读硕士研究生,从事钢渣碳酸化固碳及余热回收方面的研究工作（E‑mail： 2991529998@qq.com）。
程星星（1984—）,女,山东济南人,教授,博士,从事烟气污染物处理方面的研究工作（E‑mail： xcheng@sdu.edu.cn）。
王鲁元（1988—）,男,山东济南人,副教授,博士,从事燃煤污染物控制研究工作（E‑mail: luyuanwang@qlu.edu.cn）。
张兴宇（1987—）,男,山东济南人,讲师,博士,从事大气污染物控制及催化材料开发工作（E‑mail： xyzh@qlu.edu.cn）。
基金资助:
山东省重点研发计划(2019GSF109004)

Research on carbon sequestration path of steel slag carbonation under carbon neutralization background

ZHANG Shufan¹(), CHENG Xingxing¹(), WANG Luyuan²(), ZHANG Xingyu²(), WANG Zhiqiang¹^,^*()

1. School of Energy and Power Engineering,National Engineering Laboratory for Reducing Emissions from Coal Combustion,Engineering Research Center of Environmental Thermal Technology,Ministry of Education,Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization,Shandong University,Jinan 250061,China
2. School of Energy and Power Engineering,Qilu University of Technology,Jinan 250014,China

Received:2021-04-26 Revised:2021-05-18 Online:2021-06-25 Published:2021-06-25
Contact: WANG Zhiqiang

摘要/Abstract

摘要：

燃烧后捕集CO₂是重要的碳捕集途径之一,利用炼钢过程副产物钢渣中的碱性金属氧化物（CaO为主）与CO₂进行碳酸化反应从而实现固碳。综述了冷态钢渣直接固碳、冷态钢渣间接固碳、热态钢渣直接固碳3种主要方式及存在的问题,对比了3种固碳方式的优劣,指出热态钢渣直接固碳是“碳达峰,碳中和”背景下最符合我国国情的钢渣固碳技术,实现固碳的同时利用出炉钢渣余热,是最具应用前景的钢渣固碳技术之一。

关键词: 钢渣固碳, 碳捕集, 冷态钢渣直接固碳, 冷态钢渣间接固碳, 热态钢渣直接固碳, 碳中和, 碳达峰, 碳汇

Abstract:

CO₂ capture after combustion is one of the important ways of carbon capture.Carbon sequestration can be achieved by carbonation reaction between alkali metal oxides （CaO-based） in steel slag and CO₂.This paper reviews three main methods for carbon sequestration,direct carbon fixation with cold steel slag,indirect carbon fixation with cold steel slag and direct carbon fixation with hot steel slag.After summarizing the methods and pointing out the existing problems,the advantages and disadvantages of the three methods were compared.It is pointed out that the direct carbon fixation with hot steel slag is the most suitable carbon fixation technology with steel slag under the background of carbon peak and carbon neutralization.By realizing carbon sequestration and steel slag waste heat recycling simultaneously,it is one of the most promising carbon fixation technologies.

Key words: carbon fixation by steel slag, carbon capture, cold steel slag direct carbon fixation, cold steel slag indirect carbon fixation, hot steel slag direct carbon fixation, carbon neutralization, carbon peak, carbon sink

中图分类号:

TK09：TK11 ⁺5

张书繁, 程星星, 王鲁元, 张兴宇, 王志强. 碳中和背景下的钢渣碳酸化固碳路径研究[J]. 华电技术, 2021, 43(6): 86-91.

ZHANG Shufan, CHENG Xingxing, WANG Luyuan, ZHANG Xingyu, WANG Zhiqiang. Research on carbon sequestration path of steel slag carbonation under carbon neutralization background[J]. Huadian Technology, 2021, 43(6): 86-91.

图/表 2

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成分	质量分数/%
CaO	45.0~65.0
SiO₂	15.0~25.0
Al₂O₃	1.0~5.0
FeO	5.0~12.0
Fe₂O₃	5.0~12.0
MgO	7.0~16.0
MnO	1.0~7.0
P₂O₅	1.0~5.0
f‑CaO	0~10.0

固碳方式	反应工艺	反应时间/h	CO₂体积分数/%	温度/ ℃	碳酸化转化率/%
冷态钢渣直接固碳	高压反应釜^[17]	12	99.0	40~60	68.0
冷态钢渣直接固碳	PRB^[18]	1	99.0	25	93.5
冷态钢渣间接固碳	乙酸、搅拌^[42]	1	99.0	80	20.0
	盐酸、搅拌^[26]	1	99.0	25	56.8
	乙酸、搅拌、掺杂TBP^[42]	1	99.0	80	40.0
	NH₄Cl溶液、搅拌^[30]	2	99.0	80	60.0
热态钢渣直接固碳	固定床反应^[27]	1	99.0	600	20.4
热态钢渣直接固碳	固定床反应^[27]	1	15.0	600	18.8

碳中和背景下的钢渣碳酸化固碳路径研究

Research on carbon sequestration path of steel slag carbonation under carbon neutralization background

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