ND钢管在干熄焦锅炉副省煤器中的应用
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摘要
锅炉管的漏水和爆管问题是目前干熄焦正常生产的最大威胁之一,因此,对副省煤器受热面管子耐低温露点腐蚀性能进行研究具有重要意义。分析了副省煤器受热面管子腐蚀的原因,介绍了ND(09CrCuSb)钢的特性和耐腐蚀性能;并通过强度校核计算,分析了用ND钢管作为替代材质的技术可行性;最后通过工程案例介绍了具体实施方法和经济效益,具有实际推广应用意义。
The leakage and explosion of boiler pipes is one of the biggest threat to the normal production of CDQ.Therefore,it is very important to study the low temperature dew point corrosion resistance of the auxiliary economizer′s heating surface tubes.The causes of corrosion of the auxiliary economizer's heating surface tubes were analyzed,and the characteristics and corrosion resistance of ND steel were introduced.Through the strength check calculation,the technical feasibility of using ND steel pipes as the alternative materials.And finally,the concrete implementation method and economic benefits were introduced based on the engineering example,which had practical application significance.
The leakage and explosion of boiler pipes is one of the biggest threat to the normal production of CDQ.Therefore,it is very important to study the low temperature dew point corrosion resistance of the auxiliary economizer′s heating surface tubes.The causes of corrosion of the auxiliary economizer's heating surface tubes were analyzed,and the characteristics and corrosion resistance of ND steel were introduced.Through the strength check calculation,the technical feasibility of using ND steel pipes as the alternative materials.And finally,the concrete implementation method and economic benefits were introduced based on the engineering example,which had practical application significance.
引文
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[2]梁学福,高建苹.省煤器炉管腐蚀原因[J].腐蚀与防护,2012,33(10):900.
[3]王国鹏.太钢焦炉煤气脱硫和酸性气体制酸工艺实践[J].中国冶金,2012,22(5):26.
[4]钱余海,李自刚,杨阿娜.低合金耐硫酸露点腐蚀钢的性能和应用[J].特殊钢,2005,26(5):30.
[5]张万灵,刘建容.碳钢在NaCl溶液中初始腐蚀行为的初探[J].钢铁研究,2010,38(6):30.
[6]李倩,张建良,左海滨,等.软水对碳钢和紫铜腐蚀的影响因素[J].中国冶金,2014,24(6):20.
[7]郑文龙.新型耐硫酸露点用钢——ND钢[J].机械工程材料,1996,20(3):46.
[8]常季,陈吉,崔霄.ND钢耐低温露点腐蚀性能的研究[J].石油化工腐蚀与防护,2016,33(1):8.
[9]吴进强,常治平,杨美,等.ND钢、B450NS在H2SO4溶液中的腐蚀行为[J].科学咨询,2014(6):66.
[10]蔡昊.09CrCuSb钢在锅炉制造中的应用[J].工业锅炉,2005(5):25.
[11]顾丕雄,朱锦美.耐蚀钢09CrCuSb在锅炉省煤器承压部件上的应用[J].焊接与切割,2015(18):44.