ND钢管在干熄焦锅炉副省煤器中的应用

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。

Application of ND steel pipe in auxiliary economizer of CDQ boiler

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.