IMECH-IR  > 高温气体动力学国家重点实验室
Formation and Growth Behavior Analysis of Slagging Rings in Rotary Kiln-Type Hazardous Waste Incineration Systems
Zhao J(赵京)1; Zhang ZR(张梓睿)2,3; Li B(李博)2; Wei XL(魏小林)2
Source PublicationENERGIES
2021-11-01
Volume14Issue:22Pages:14
Abstract

Rotary kiln incineration technology has the advantages of strong material adaptability and a simple treatment process and has been widely used in hazardous waste treatment. However, the actual incineration process has caused problems such as ring formation in the treatment system due to the lack of research on the slagging mechanisms. In this paper, slagging phenomena occurring in the second half of the rotary kiln, the exit flue of the secondary combustion chamber, and the wall of the quench tower are analyzed and discussed in detail through characterization methods. The results indicate that the adhesion of low-melting alkali metal salts on the refractory surface in the second half of the rotary kiln is the key factor in forming the initial slagging layer. In the growth process of the slagging ring, the formed liquid phase can bond incineration residues of different sizes together and form a dense embryo body through liquid phase sintering. The deposition and solidification of molten/semi-molten fly ashes cause slagging formation in the exit flue of the secondary combustion chamber. The slagging phenomenon occurring in the inner wall of the quench tower belongs to the "crystalline-coalesce-hardening " process of the inorganic salts precipitating out of the high-salt wastewater.

Keywordrotary kiln hazardous waste treatment slagging phenomena characterization methods mechanism analysis
DOI10.3390/en14227561
Indexed BySCI ; EI
Language英语
WOS IDWOS:000724926100001
WOS KeywordFLY-ASH ; CORROSION ; GASIFICATION ; REFRACTORIES ; SIMULATION ; VAPORS ; METALS ; SODIUM
WOS Research AreaEnergy & Fuels
WOS SubjectEnergy & Fuels
Funding ProjectNational Natural Science Foundation of China[51736010]
Funding OrganizationNational Natural Science Foundation of China
ClassificationQ3
Ranking1
ContributorLi, Bo
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/88047
Collection高温气体动力学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China;
2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Kinet, Beijing 100190, Peoples R China;
3.Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian 710049, Peoples R China
Recommended Citation
GB/T 7714
Zhao J,Zhang ZR,Li B,et al. Formation and Growth Behavior Analysis of Slagging Rings in Rotary Kiln-Type Hazardous Waste Incineration Systems[J]. ENERGIES,2021,14,22,:14.
APA Zhao J,Zhang ZR,Li B,&Wei XL.(2021).Formation and Growth Behavior Analysis of Slagging Rings in Rotary Kiln-Type Hazardous Waste Incineration Systems.ENERGIES,14(22),14.
MLA Zhao J,et al."Formation and Growth Behavior Analysis of Slagging Rings in Rotary Kiln-Type Hazardous Waste Incineration Systems".ENERGIES 14.22(2021):14.
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