转炉高温烟气中石灰石粉的分解特性研究

doi:10.19964/j.issn.1006-4990.2022-0711

Abstract

Abstract:

In view of the problems of high energy consumption and high cost of limestone calcination process in lime kiln，the feasibility of using high temperature flue gas waste heat in converter vaporization cooling flue to decompose limestone powder was discussed.The decomposition characteristic of limestone powder in high temperature flue gas environment of converter and the influence of temperature，time，atmosphere and dust on its characteristic were studied by thermogravimetric analysis experiment and tube furnace experiment.The results showed that CO₂ in flue gas could inhibit the decomposition of CaCO₃ and increase the initial decomposition temperature.However，with the increase of temperature，the reaction rate was increased，the decomposition rate was increased，and the reaction time was decreased.The main components FeO and Fe₂O₃ in smoke dust could promote the decomposition of CaCO₃.CaCO₃ grains were decomposed into CaO grains，CO₂ gas was released，and the pores on the surface of the grains was increased obviously，so the activity was increased.The experimental results preliminarily verified the feasibility of using high temperature flue gas waste heat from the converter to decompose limestone powder.

Key words: high temperature flue gas of converter, limestone powder, smoke dust, decomposition characteristics, calcium oxide

CLC Number:

TQ132.32

CHEN Xiaoqing, ZHOU Jian′an, WANG Yi, HAN Juan, WANG Bao, PEI Peiyan. Study on decomposition characteristic of limestone powder in high temperature flue gas of converter[J]. Inorganic Chemicals Industry, 2023, 55(10): 70-77.

Figures/Tables 14

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References 23

1	MARUOKA N， ITO A， HAYASAKA M，et al.Effect of CO₂ content in quicklime on dissolution rate of quicklime in steelmaking sla-gs［J］.ISIJ International，2017，57（10）：1684-1690.
2	MARUOKA N， ISHIKAWA A， SHIBATA H，et al.Dissolution rate of various limes into steelmaking slag［J］.High Temperature Materials and Processes，2013，32（1）：15-24.
3	KITAMURA S Y， YONEZAWA K， OGAWA Y，et al.Improvement of reaction efficiency in hot metal dephosphorisation［J］.Ironmaking & Steelmaking，2002，29（2）：121-124.
4	ZHAO Dongwei， LI Haibo， CUI Yang，et al.Control of inclusion composition in calcium treated aluminum killed steels［J］.ISIJ International，2016，56（7）：1181-1187.
5	李占国.全活性石灰强化烧结技术基础及其应用研究［D］.北京：北京科技大学，2022.
	LI Zhanguo.Research on basic theory and application of full active lime intensified sintering technology［D］.Beijing：University of Science and Technology Beijing，2022.
6	贾红玉.生产优质冶金石灰的条件［J］.钢铁，2000，35（11）：1-3.
	JIA Hongyu.Production conditions for quality metallurgical lime［J］.Iron and Steel，2000，35（11）：1-3.
7	乔斌，张凯博.活性石灰回转窑技术的发展与创新［J］.耐火与石灰，2020，45（5）：9-13.
	QIAO Bin， ZHANG Kaibo.Development and innovation of active lime rotary kiln technology［J］.Refractories & Lime，2020，45（5）：9-13.
8	陈鸿伟，陈江涛，危日光，等.石灰石分解特性及微观结构迁移规律研究［J］.热能动力工程，2013，28（1）：73-77，112.
	CHEN Hongwei， CHEN Jiangtao， WEI Riguang，et al.Study of the decomposition characteristics of limestone and the law governing the migration of the microscopic structure［J］.Journal of Engineering for Thermal Energy and Power，2013，28（1）：73-77，112.
9	SCALTSOYIANNES A， LEMONIDOU A.CaCO₃ decomposition for calcium-looping applications：Kinetic modeling in a fixed-bed reactor［J］.Chemical Engineering Science：X，2020，8：100071.
10	李佳容，朱建国，朱书骏，等.快速加热条件下碳酸钙分解动力学［J］.中国粉体技术，2018，24（6）：1-7.
	LI Jiarong， ZHU Jianguo， ZHU Shujun，et al.Kinetics of calcium carbonate decomposition under rapid heating condition［J］.China Powder Science and Technology，2018，24（6）：1-7.
11	GHIASI M， ABDOLLAHY M， KHALESI M.Investigating the kinetics，mechanism，and activation energy of limestone calcination using isothermal analysis methods［J］.Mining，Metallurgy & Exploration，2021，38（1）：129-140.
12	张文仙.高浓度CO₂气氛下的石灰石煅烧工艺研究［D］.天津：河北工业大学，2020.
	ZHANG Wenxian.Study on limestone calcination process under high CO₂ atmosphere［D］.Tianjin：Hebei University of Technology，2020.
13	张文仙，刘联胜，曹和军，等.二氧化碳浓度对石灰石分解反应动力学的影响［J］.无机盐工业，2020，52（3）：59-63.
	ZHANG Wenxian， LIU Liansheng， CAO Hejun，et al.Effect on kinetics of limestone decomposition under different CO₂ atmospheres［J］.Inorganic Chemicals Industry，2020，52（3）：59-63.
14	岳林海，水淼，徐铸德.纳米级粒径超细碳酸钙热分解动力学［J］.无机化学学报，1999，15（2）：225-229.
	YUE Linhai， SHUI Miao， XU Zhude.Decomposition kinetics of nano particle calcite［J］.Chinese Journal of Inorganic Chemistry，1999，15（2）：225-229.
15	陈海，张世红，杨海平，等.大粒径石灰石热分解动力学研究［J］.无机盐工业，2013，45（9）：11-14.
	CHEN Hai， ZHANG Shihong， YANG Haiping，et al.Study on thermal decomposition kinetics of limestone with large particle size［J］.Inorganic Chemicals Industry，2013，45（9）：11-14.
16	SONG Weiming， ZHOU Jianan， LI Yujie，et al.Utilization of waste tire powder for gaseous fuel generation via CO₂ gasification using waste heat in converter vaporization cooling flue［J］.Renewable Energy，2021，173：283-296.
17	XIE Jianbo， ZHOU Jianan， ZHANG Hua，et al.Utilization of waste heat gas in a converter flue for CO generation by coal injection［J］.Energy & Fuels，2017，31（11）：12407-12416.
18	王子铭，陈亮，岳爽，等.同时煅烧硫化反应中石灰石微观孔结构演变特性［J］.化工学报，2018，69（5）：2149-2157，1800.
	WANG Ziming， CHEN Liang， YUE Shuang，et al.Microstructure evolution of procedural products during limestone simultaneous calcination/sulfation［J］.CIESC Journal，2018，69（5）：2149-2157，1800.
19	李振山，房凡，蔡宁生.高浓度CO₂下CaCO₃循环煅烧试验与模拟［J］.热能动力工程，2007，22（6）：642-646，689.
	LI Zhenshan， FANG Fan， CAI Ningsheng.CaCO₃ circulating calcination tests and its simulation at a high concentration of CO₂ ［J］.Journal of Engineering for Thermal Energy and Power，2007，22（6）：642-646，689.
20	RAMEZANI M， TREMAIN P， DOROODCHI E，et al.Determination of carbonation/calcination reaction kinetics of a limestone sorbent in low CO₂ partial pressures using TGA experiments［J］.Energy Procedia，2017，114：259-270.
21	范浩杰，章明川，吴国新，等.碳酸钙热分解的机理研究［J］.动力工程，1998，18（5）：40-43.
	FAN Haojie， ZHANG Mingchuan， WU Guoxin，et al.On the mechanism of high temperature dissociation of calcium carbona-te［J］.Power Engineering，1998，18（5）：40-43.
22	AR İ， DOĞU G.Calcination kinetics of high purity limestones［J］.Chemical Engineering Journal，2001，83（2）：131-137.
23	陈凯锋，薛正良，李建立.高温煅烧下快速加热石灰石的热分解反应动力学［J］.硅酸盐学报，2016，44（5）：754-762.
	CHEN Kaifeng， XUE Zhengliang， LI Jianli.Kinetics of thermal decomposition reaction of limestone for flash heating of limestone at high temperature［J］.Journal of the Chinese Ceramic Society，2016，44（5）：754-762.

烟尘添加量/%	初始质量/mg	实际剩余质量/mg	理论剩余质量/mg	分解率/ %
0	10	5.77	5.40	96.1
10	9	6.25	6.04	94.7
30	7	6.99	6.92	97.7
50	5	7.91	7.80	95.0

[1]	CHEN Qi, LIAO Dankui, ZHANG Qingnian, YAN Jinsheng, HUANG Yu, CHEN Xiaopeng, TONG Zhangfa. Fast and efficient determination of quicklime activity by conductivity method [J]. Inorganic Chemicals Industry, 2023, 55(9): 114-120.
[2]	LI Qiang, YOU Xiaomin, SHE Xuefeng, JIANG Zeyi, XUE Qingguo, WANG Jingsong. Effect of calcination temperature and carbon structure on compressive strength of CaO-containing carbon pellets [J]. Inorganic Chemicals Industry, 2023, 55(9): 43-49.
[3]	DU Guanggang, HE Tong, XU Zehui, LIU Lei. Study on properties of calcium oxide in SCA under different calcination conditions [J]. Inorganic Chemicals Industry, 2023, 55(10): 35-41.
[4]	ZENG Yanjie,XU Tongfei,HUANG Ziliang,CHEN Zhipeng,LIU Xudong,YI Meigui. Study on removal of calcium impurities from magnesium waste residue by roasting-hydration complexing [J]. Inorganic Chemicals Industry, 2022, 54(11): 118-123.
[5]	Meng Hua,Zhao Jingyi,Nie Chaoyang,Wang Ye. Study on simulation process of reducing titanium dioxide gypsum by sulfur fluidization [J]. Inorganic Chemicals Industry, 2021, 53(9): 61-66.
[6]	Zhang Yulu,Wang Ye,Yang Lin,Yang Xiushan,Wang Xinlong. Preparation of high purity calcium oxide combined with sulfuric acid from fluorine gypsum decomposed by sulfur [J]. Inorganic Chemicals Industry, 2020, 52(7): 70-73.
[7]	Su Shaolong,Qu Xiaolong,Zhong Dule,Sun Yanmin,Nan Jun,Li Shipeng. Study on preparation and performance of desulfurizers in process of calcium injection desulfurization in furnace [J]. Inorganic Chemicals Industry, 2020, 52(7): 66-69.
[8]	ZHENG Shao-Cong, NING Ping, WANG Fan, CHENG Fei-Xiang, HU Fen-E. Study on preparation of sulfur dioxide and lime by thermal decomposition of phosphogypsum [J]. INORGANICCHEMICALSINDUSTRY, 2013, 45(9): 45-.
[9]	SHEN Ming-Le, ZHANG Fu-Gang, ZHANG Gang. Synergistic effect of treating acidic waste water containing metal ions by lime stone powder [J]. INORGANICCHEMICALSINDUSTRY, 2013, 45(4): 51-.
[10]	TU Lan-Ying, ZHAO Qi-Wen, CUI Xiao-Qin. Experimental study on purifying by-product calcium chloride of soda ash [J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(8): 32-.
[11]	ZHAO Hui-Juan, LIU Can, WANG Kai, YANG Hong. Effect of CaF₂ on content of free CaO in tricalcium silicate by co-precipitation process [J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(8): 19-.
[12]	LU Yang, ZHANG Wei. Influence of activity of calcium oxide on solid state sintering reaction [J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(7): 16-.
[13]	DAI Hong-Xing, DENG Ji-Guang, ZHANG Lei, ZHAO Zhen-Xuan, WANG Guo-Zhi, LIU Cai-Xin, LI Hui-Ning. Soft/hard template assisted fabrication of porous MgO,CaO,and CaCO₃ [J]. INORGANICCHEMICALSINDUSTRY, 2011, 43(5): 18-.
[14]	CAO Chun-Bao, ZHANG Wei, DENG Fu-Jun. Analysis on activity of calcium oxide from calcining small amount of limestone [J]. INORGANICCHEMICALSINDUSTRY, 2011, 43(11): 19-.
[15]	Tian Weijun;Lai Naibin. Process research and production practice of recovering calcium oxide from carbide slag [J]. INORGANICCHEMICALSINDUSTRY, 2010, 0(8): 0-0.

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Study on decomposition characteristic of limestone powder in high temperature flue gas of converter

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