氯化剂对超细颗粒物与重金属共生成特性的影响

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (852 KB) HTML (0 KB)
Export: BibTeX | EndNote (RIS)

Abstract In this paper, a circulating fluidized bed reactor was selected as the experimental platform, the effects of additives (NH₄Cl and KCl) on the co-generation characteristics between ultrafine particulates and heavy metals were investigated when the temperature was 850℃. Results showed that the number concentration of ultrafine particulates was reduced when NH₄Cl or KCl existence, however, the effect of KCl was more obvious, playing a stepped or synergistic role. Cr, Mn, and Ni entering the ultrafine particulates mainly by entrainment, while Pb, Cu, and Zn were accumulated mainly via evaporation, condensation, and adsorption. Inorganic chlorine could act as a good binder and promote the growth and agglomeration between ultrafine particulates and promote the growth and independence of its surface morphology. Besides, it has been found that K could promote the agglomeration growth of fine-mode particulates, increasing the peak value, however, NH₄⁺ will reduce the peak value of coarse-mode particulates. This study could provide a reference for the co-ordinated control of ultrafine particulates and heavy metals in the thermal treatment of sludge and other wastes.

Key words： sludge ultrafine particulates heavy metals cogeneration feature incineration

Received: 06 May 2020

PACS:

X705

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	FANG Zhen-quan
	LIU Fei-fei
	MAN Jia-qi
	LI Yan-long
	LI Run-dong

Cite this article:

FANG Zhen-quan,LIU Fei-fei,MAN Jia-qi等. The effect of chlorination agents on the co-generation characteristics between ultrafine particulates and heavy metals[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(12): 5361-5368.

URL:

http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I12/5361

[1]	Huang H J, Yuan X Z. The migration and transformation behaviors of heavy metals during the hydrothermal treatment of sewage sludge[J]. Bioresource technology, 2016,200:991-998.
[2]	Zhang G, Hai J, Ren M, et al. Emission, mass balance, and distribution characteristics of PCDD/Fs and heavy metals during co-combustion of sewage sludge and coal in power plants[J]. Environmental science & technology, 2013,47(4):2123-2130.
[3]	Guo G H, Chen T B, Yang J, et al. Regional distribution characteristics and variation of heavy metals in sewage sludge of China[J]. Acta Sci. Circumstantiate, 2014,34(10):2455-2461.
[4]	Liao Y F, Ma X Q. Combustion behavior and kinetic characteristics of a city sewage sludge[J]. Journal of Fuel Chemistry and Technology, 2009,37(3):296-301.
[5]	Li B, Wang F, Chi Y, et al. Study on optimal energy efficiency of a sludge drying-incineration combined system[J]. Journal of Material Cycles and Waste Management, 2014,16(4):684-692.
[6]	Jayaraman K, Gökalp I P. Combustion and gasification characteristics of miscanthus and sewage sludge[J]. Energy Conversion and Management, 2015,89:83-91.
[7]	Samolada M C, Zabaniotou A A. Comparative assessment of municipal sewage sludge incineration, gasification and pyrolysis for a sustainable sludge-to-energy management in Greece[J]. Waste management, 2014,34(2):411-420.
[8]	Aragon G, Sanz D, Mugica I, et al. Enhanced control of fine particle emissions from waste biomass combustion using a hybrid filter[J]. Energy Fuels. 2015,29(4):2358-2371.
[9]	Saarnio K, Frey A, Niemi J V, et al. Chemical composition and size of particles in emissions of a coal-fired power plant with flue gas desulfurization[J]. Journal of Aerosol Science, 2014,73:14-26.
[10]	王楠,邹宗树,山口周.垃圾焚烧灰渣熔融处理重金属氯化-挥发反应分析[J]. 东北大学学报, 2005,(9):874-877. Wang N, Zhou Z S, Shan K Z. Thermodynamic analysis of chlorination-evaporation of heavy metals during melting of ash from municipal waste incineration[J]. Journal of Northeastern University (Natural Science), 2005,(9):874-877.
[11]	Chan C C Y, Kirk D W. Behavior of metals under the conditions of roasting MSW incinerator fly ash with chlorinating agents[J]. Journal of Hazardous Materials, 1999,64(1):75-89.
[12]	Yu S R, Zhang B, Wei J X, et al. Effects of chlorine on the volatilization of heavy metals during the co-combustion of sewage sludge[J]. Waste Management, 2017,62(2):204-210.
[13]	洪雁翔,宁寻安,路星雯,等.氯化剂对铁尾矿焙烧过程中重金属挥发的影响[J]. 中国环境科学, 2020,40(5):2276-2286. Hong Y X, Ning X A, Lu X W, et al. Effect of chlorine on the volatilization of heavy metals by roasting iron tailings[J]. China Environmental Science, 2020,40(5):2276-2286.
[14]	王野,李娜,田书磊,等.垃圾焚烧飞灰热处理过程中Zn的挥发机理研究[J]. 中国环境科学, 2019,39(2):706-712. Wang Y, Li N, Tian S L, et al. Volatilization mechanism of Zn on municipal solid waste incineration fly ash during thermal treatment[J]. China Environmental Science, 2019,39(2):706-712.
[15]	胡小英,田书磊,闫大海,等.氯化剂对垃圾焚烧飞灰中重金属挥发特性的影响[J]. 中国环境科学, 2008,(7):614-619. Hu X Y, Tian S L, Yan D H, et al. The effect of chlorination agents on the volatilization of heavy metals in fly ash from municipal solid waste incinerator[J]. China Environmental Science, 2008,(7):614-619.
[16]	Liu J, Zheng C G. Study on dynamics of heavy metal volatilization behavior in a bubbling fluidized bed[J]. J. Eng. Thermophysics. 2009,2009(2):347-349.
[17]	Van de Velden M, Dewil R, Baeyens J, et al. The distribution of heavy metals during fluidized bed combustion of sludge (FBSC)[J]. Journal of Hazardous Materials, 2008,151(1):96-102.
[18]	Li Q, Meng A, Jia J, et al. Investigation of heavy metal partitioning influenced by flue gas moisture and chlorine content during waste incineration[J]. Journal of Environmental Sciences, 2010,22(5):760-768.
[19]	Sun C J, Li M G, Gau S H, et al. Improving the mechanical characteristics and restraining heavy metal evaporation from sintered municipal solid waste incinerator fly ash by wet milling[J]. Journal of hazardous materials, 2011,195:281-290.
[20]	Jiao F, Zhang L, Yamada N, et al. Effect of HCl, SO2 and H2O on the condensation of heavy metal vapors in flue gas cooling section[J]. Fuel processing technology, 2013,105:181-187.
[21]	Zhang Y, Chen Y, Meng A, et al. Experimental and thermodynamic investigation on transfer of cadmium influenced by sulfur and chlorine during municipal solid waste (MSW) incineration[J]. Journal of Hazardous Materials, 2008,153(1/2):309-319.
[22]	Peng T H, Lin C L. Influence of various chlorine additives on the partitioning of heavy metals during low-temperature two-stage fluidized bed incineration[J]. Journal of environmental management, 2014,146:362-368.
[23]	Stucki S, Jakob A. Thermal treatment of incinerator fly ash:factors influencing the evaporation of ZnCl2[J]. Waste Management, 1998, 17(4):231-236.
[24]	刘敬勇,孙水裕,罗光前.造纸污泥焚烧中Zn/Cu/Ni/Mn的热力学平衡分布[J]. 应用基础与工程科学学报, 2012,20(2):200-209. Liu J Y, Sun S Y, Luo G Q. Thermodynamic equilibrium distribution of Zn, Cu, Ni and Mn during incineration of paper mill sewage sludge[J]. Journal of Basic Science and Engineering, 2012,20(2):200-209.
[25]	Bennett R L, Knapp K T. Characterization of particulate emissions from municipal wastewater sludge incinerators[J]. Environmental Science & Technology, 1982,16(12):831-836.
[26]	Marani D, Braguglia C M, Mininni G, et al. Behavior of Cd, Cr, Mn, Ni, Pb, and Zn in sewage sludge incineration by fluidized bed furnace[J]. Waste management, 2003,23(2):117-124.
[27]	Gerstle R W, Albrinck D N. Atmospheric emissions of metals from sewage sludge incineration[J]. Journal of the Air Pollution Control Association, 1982,32(11):1119-1123.