尹洪超
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废液焚烧余热锅炉灰渣沉积机理分析
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Indexed by:期刊论文

Date of Publication:2013-05-05

Journal:化工进展

Included Journals:PKU、ISTIC、CSCD

Volume:32

Issue:5

Page Number:1172-1176

ISSN No.:1000-6613

Key Words:废液焚烧;灰渣沉积;形貌;硫酸钠;低熔点共晶体

Abstract:研究了取自某炼化公司废液焚烧余热锅炉不同部位换热面的多个沉积样品,分析了不同部位换热面沉积生长物的组分与沉积机理.利用X射线衍射分析仪(XRD)、扫描式电子显微镜(SEM)以及能量弥散X射线探测器(EDX)分别来鉴定样品的结晶物成分、形貌以及元素组成,各个样品的灰熔融特征温度在智能灰熔点测试仪上测定.结果表明,余热锅炉高温入口段主要沉积物为Na2SO4、NiO、Fe2.3Si0.7O4等,炉膛中低温区域主要出现Na2Ni(SO4)2·4H2O、Na3Fe(SO4)3及 Na6Fe(SO4)4等物质沉积.这主要是由于硫酸钠与受热面管壁氧化保护层(Fe2O3)发生高温腐蚀引起的.

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Gender:Male

Alma Mater:大连理工大学

Degree:Doctoral Degree

School/Department:能源与动力学院

Discipline:Thermal Engineering. Chemical Engineering. Operation Research and Control Theory

Business Address:大连理工大学能源与动力学院712室

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