稻壳灰-电石渣复合吸收剂的脱硫脱硝性能

doi:10.11896/j.issn.1005-023X.2018.22.027

Abstract
Figure/Table
References
Related Citation (2)

Download:

Full Text ( PDF ) (2369KB)
Export: BibTeX | EndNote (RIS)

Abstract SO₂ and NO_x are the main air pollutants in cement kiln exhaust gas, and reducing their emissions has become the main way to control air pollution.This work attempts to prepare composite absorbent by using agricultural waste slag rice husk ash and industrial waste slag carbide slag, in the formation process of cement clinker to achieve desulfurization and denitrification. The impacts of rice husk ash and carbide slag ratio (2∶5—18∶5), reaction temperature (500—900 ℃) and oxygen concentration (0%—3%) on the desulfurization and denitrification efficiency of composite absorbent were studied. The results showed that the ratio of rice husk ash and carbide slag was 6∶5, which was incorporated into the cement raw meal under 900 ℃ and 1% oxygen concentration, the denitrification rate reached 97% and the desulfurization rate was 99%. The use of two kinds of waste slag, rice husk ash and carbide slag, to prepare a composite absorbent could effectively remove SO₂ and NO_x in a cement decomposition furnace.

Key words： rice husk ash carbide slag cement kiln desulfurization and denitrification

Published: 21 December 2018

CLC number:

X511

	Service
	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Yali
	CHEN Meina
	CUI Suping
	MA Xiaoyu

Cite this article:

WANG Yali,CHEN Meina,CUI Suping, et al. Desulfurization and Denitrification Performance of Rice Husk Ash-Carbide Slag Composite Absorbent[J]. Materials Reports, 2018, 32(22): 3995-3999.

URL:

http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.22.027 OR http://www.mater-rep.com/EN/Y2018/V32/I22/3995

1 Li F F, Feng L B, Xie W T. Experimental study on the pyrolysis of calcium acetate/fly ash compound adsorbent used as desulfurizer and denitrificater[J].Materials Review B: Research Papers,2016,30(6):116(in Chinese).
李范范,冯立斌,谢为涛.醋酸钙/飞灰复合脱硫脱硝剂热解性能实验研究[J].材料导报:研究篇,2016,30(6):116.
2 蔡幼兰.烟气脱硫脱硝一体化技术研究[J].能源与环境,2016(2):74.
3 Li X Y, Hu Z J, Ye X C, et al. Self-desulfurization and SO₂ emission control for cement manufacture[J].Cement,2010(6):16(in Chinese).
李小燕,胡芝娟,叶旭初,等.水泥生产过程自脱硫及SO₂排放控制技术[J].水泥,2010(6):16.
4 Gupta H, Benson S A, Fan L S, et al. Pilot-scale studies of NO_x reduction by activated high-sodium lignite chars: A demonstration of the carbonox process[J]. Industrial & Engineering Chemistry Research,2004,43(18):5820.
5 Yun D. Study on the effects of oxygen concentration and temperature on the denitrification efficiency of biomass char[J]. Environmental Engineering,2014(s1):1033(in Chinese).
云端.氧气浓度和温度对生物质焦炭脱硝效率的影响研究[J].环境工程,2014(s1):1033.
6 Yang L. The utilization of silica in rice husk ash[D]. Changchun: Jilin University,2015(in Chinese).
杨柳.稻壳灰中二氧化硅的利用[D].长春:吉林大学,2015.
7 Wang C, Du Y, Che D. Investigation on the NO reduction with coal char and high concentration CO during oxy-fuel combustion[J]. Energy & Fuels,2012,26(12):7367.
8 Gupta H, Benson S A, Fan L S, et al. Reduction of NO_x by activated lignite char[C]∥Fuel Chemistry Division, ACS National Meeting, New Orleans, LA,2003.
9 Allen D, Hayhurst A N. The chemical reactions of nitric oxide with solid carbon and catalytically with gaseous carbon monoxide[J]. Fuel,2015,142:260.
10 Wang B. Reduction of NO_x by biochar in cement kiln and its DFT analysis[D]. Beijing: Beijing University of Technology,2017(in Chinese).
王斌.生物质炭在水泥窑的脱硝作用及其DFT研究[D].北京:北京工业大学,2017.
11 Han F, Tan X, Zhao F. Application of carbide slag in autoclaved aerated concrete[C]∥Chinese Materials Conference. Springer, Singapore,2017:831.
12 Huang R J. Discussion on application technology of desulphurization technique of calcium carbide residues[J]. China Environmental Protection Industry,2008(12):41(in Chinese).
黄荣捷.电石渣脱硫技术应用工艺探讨[J].中国环保产业,2008(12):41.
13 Zhou W M. Study on reduction of nitric oxide by calcium-containing carbonaceous materials[D]. Zhejiang: Zhejiang University,2006(in Chinese).
周威明.含钙的碳质材料还原NO的实验研究[D].浙江:浙江大学,2006.
14 Sun L N, Li K, Tang L H, et al. Research progress of common metal oxides for flue gas desulfurization[J]. Chemical Industry And Engineering Progress,2017,36(1):181(in Chinese).
孙丽娜,李凯,汤立红,等.常见金属氧化物烟气脱硫研究进展[J].化工进展,2017,36(1):181.
15 Ou Y D, Chen K. SEM/TEM study on the microstructure of rice husk ash and nano-SiO₂ in it[J]. Journal of Chinese Electron Microscopy Society,2003,22(5):390(in Chinese).
欧阳东,陈楷.稻壳灰显微结构及其中纳米SiO₂的电镜观察[J].电子显微学报,2003,22(5):390.
16 Zhao Z B, Li W, Li B Q. Catalytic reduction of NO by chars loaded with Ca and Fe[J].Environmental Science,2001,22(5):17(in Chinese).
赵宗彬,李文,李保庆.半焦负载钙和铁催化还原NO的研究[J].环境科学,2001,22(5):17.
17 Allen D, Hayhurst A N. The effect of CaO on emissions of nitric oxide from a fluidised bed combustor[J]. Fuel,2015,158:898.
18 Hang X Z, Xu Y N, Zhang K, et al. Experiment study on desulfuration of carbide slag[J]. Journal of Shenyang Institute of Engineering(Natural Science),2011,7(4):308(in Chinese).
黄新章,徐有宁,张凯,等.电石渣脱硫的实验研究[J].沈阳工程学院学报(自然科学版),2011,7(4):308.
19 Mechanism and control technology of nitrogen oxides transformation in calciner[D].Wuhan: Huazhong University of Science and Technology,2004(in Chinese).
胡芝娟.分解炉氮氧化物转化机理及控制技术研究[D].武汉:华中科技大学,2004.
20 Zhao Z B, Li W, Li B Q. Influence mechanism of O2 on NO-char reaction[J]. Journal of China University of Mining & Technology,2001,30(5):484(in Chinese).
赵宗彬,李文,李保庆.氧气对半焦还原NO反应的作用机理研究[J].中国矿业大学学报,2001,30(5):484.
21 Yang L Z, Qi H Y, You C F, et al. Catalysis of iron oxide to desulfurization with lime at medium temperature[J]. Journal of Enginee-ring Thermophysics,2002,23(2):241(in Chinese).
杨立寨,祁海鹰,由长福,等.氧化铁促进石灰中温烟气脱硫的机理性研究[J].工程热物理学报,2002,23(2):241.