Experimental Study on Coal Combustion Catalyzed by Metallic Compounds

doi:10.3969/j.issn.1008- 0198.2023.05.013

Hunan Electric Power ›› 2023, Vol. 43 ›› Issue (5): 85-91.doi: 10.3969/j.issn.1008- 0198.2023.05.013

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Experimental Study on Coal Combustion Catalyzed by Metallic Compounds

RAO Hua¹, XU Huifang², WU Aijun¹, BIN Yiyuan³, DU Wei¹, CHENG Shan²

1. National Energy Group Baoqing Power Generation,Shaoyang 422000,China;
2. School of Energy and Power Engineering,Changsha University of Science & Technology, Changsha 410114,China;
3. Hunan Xiangdian Test & Research Institute Co.,Ltd.,Changsha 410208, China

Received:2023-06-02 Revised:2023-09-04 Online:2023-10-25 Published:2023-11-03

Abstract

Abstract: The combustion experiment of Hunan bituminous coal was carried out under air atmosphere with the final temperature of 1150 ℃ by thermogravimetric analysis.Different proportions of CaO, Fe₂O₃, NaCl and MgO in coal was adding to explore the influence of metal compounds on the combustion characteristics of coal. The experimental results show that the ignition temperature can be reduced, and the combustion stability can be improved and the combustion efficiency can be improved by adding a certain amount of metal compounds into the pulverized coal. The metal compounds CaO, Fe₂O₃, NaCl and MgO have different catalytic effects on the combustion of pulverized coal. The addition of NaCl and Fe₂O₃ makes the combustion of pulverized coal violent, which is conducive to the burnout of pulverized coal. The effect of NaCl on comprehensive catalytic combustion is the best,and the ignition temperature of the sample with NaCl decreases about 22 ℃.The identification index of C_b,G and H_j increase with the decrease of MgO percentage, and the flammability is better. The addition of CaO and MgO will increase the ignition temperature of pulverized coal, and the combustion stability and burnout effect of pulverized coal will become worse, and the influence of CaO is greater than that of MgO. The catalytic combustion effect is best when the NaCl content is 8%.

Key words: coal, metallic compounds, thermogravimetric analysis, combustion characteristic, catalytic

CLC Number:

TK227.1

RAO Hua, XU Huifang, WU Aijun, BIN Yiyuan, DU Wei, CHENG Shan. Experimental Study on Coal Combustion Catalyzed by Metallic Compounds[J]. Hunan Electric Power, 2023, 43(5): 85-91.

References

[1] 岑可法,姚强,骆仲侠,等.高等燃烧学[M].杭州:浙江大学出版社,2002.
[2] 朱群益,李瑞扬,秦裕琨,等.煤粉燃烧反应动力学参数的试验研究[J].动力工程,2000,20(3):703-706.
[3] 严帅,夏梓洪,陈彩霞,等.煤催化加氢气化研究进展[J].洁净煤技术,2021,27(1):60-72.
[4] 关尹双. 三维石墨烯负载镍钴催化剂的制备及在临汾褐煤电催化还原中的应用[D].徐州:中国矿业大学,2020.
[5] 熊杰,周志杰,许慎启,等.碱金属对煤热解和气化反应速率的影响[J].化工学报,2011,62(1):192-198.
[6] 郁建国,郁建元.催化剂对高热煤燃烧特性的影响研究[J].科技资讯,2015,13(11):220-221.
[7] 穆飞,倪效磊,乔英云,等.煤催化热解焦油提质研究进展[J].现代化工,2022,42(7):51-55.
[8] 李梅,焦向炜.几种金属化合物对劣质无烟煤燃烧特性的影响[J].煤炭转化,2008,31(4):94-97.
[9] 任喜熙,胡强,杨海平,等.碱金属/碱土金属对生物质炭燃烧特性及反应动力学的影响研究[J].太阳能学报,2021,42(5):483-487.
[10] 魏砾宏,齐弟,李润东.碱金属对煤燃烧特性的影响及动力学分析[J].煤炭学报,2010,35(10):1706-1711.
[11] 姜建勋. 金属化合物催化煤燃烧规律的实验研究[D].长沙:长沙理工大学,2010.
[12] 杨英明,孙建东,李全生.我国能源结构优化研究现状及展望[J].煤炭工程,2019,51(2):149-153.
[13] 汤儒平.添加剂对煤着火点影响的研究[D].沈阳:东北大学,2010.
[14] 杨双平,丁学锁,郑英辉.添加助燃剂对煤粉燃烧性能的影响[J].钢铁研究,2010,38(1):8-11.
[15] LARIONOV K B, MISHAKOV I Y V, GROMOV A A, et al. Influence of NaNO₃ and CuSO₄ catalytic additives on coal oxidation process kinetic dependencies[J].MATEC Web of Conferences,2017,91:01007.
[16] 乔玲. 浸水煤的自燃特性研究[D].阜新:辽宁工程技术大学,2017.
[17] 杨艳华,邓能运,张生芹,等.燃煤助燃添加剂的研究现状[J].重庆科技学院学报(自然科学版),2009,11(3):70-72.
[18] 吴卓卓,杨志远,鞠晓茜,等.酸洗改性对USY分子筛结构及煤催化热解性能的影响[J].洁净煤技术,2023,29(5):21-27.
[19] 朱廷钰,刘丽鹏,王洋,等. 氧化钙催化煤温和气化研究[J].燃料化学学报,2000,28(1):36-39.
[20] 张军,汉春利,颜峥,等.煤中钠在燃烧初期行为的研究[J].燃料化学学报,2001,29(1):49-53.

Experimental Study on Coal Combustion Catalyzed by Metallic Compounds

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