有机热载体余热锅炉耦合相变换热器解决焦炉烟气结露性堵塞的研究  

Study on resolving coking flue gas condensation-induced blockage with coupled organic heat carrier waste heat boiler and phase change heat exchanger

作　　者：姜晓明 Jiang Xiaoming(Heimdallr(Shanghai)Hi-Tech Energy Reservation Co.,Ltd.,Shanghai 200335,China)

机构地区：[1]昊姆(上海)节能科技有限公司,上海200335

出　　处：《煤化工》2024年第3期20-23,共4页Coal Chemical Industry

摘　　要：焦炉烟气中的NH4HSO4等杂质不仅会造成余热锅炉堵塞和腐蚀,还会给焦炉后续节能环保设备的运行带来危害,直接影响企业经济效益和设备稳定运行。通过对NH4HSO4形成的机理分析,提出一种有机热载体余热锅炉和相变换热加热器耦合的工艺设计替代传统余热锅炉,提高烟气换热面的壁面温度,降低烟气酸腐蚀和堵塞的风险。某焦化厂应用该工艺进行改造后,系统实现了安全稳定运行,年产生直接经济效益910万元。The impurities such as NH4HSO4 in coke oven flue gas would not only cause blockage and corrosion of the waste heat boiler,but also cause harm to the operation of the downstream energy-saving and environmental protection equipment,directly affecting the enterprise economic benefits and stable equipment operation.Through analysis of the mechanism of NH4HSO4 formation,a process design coupling organic heat carrier waste heat boiler and phase change heat exchanger was proposed to replace traditional waste heat boiler to increase the wall temperature of flue gas heat exchange surface and reduce the risk of flue gas acid corrosion and blockage.After a coking plant applied this process for the transformation,the system achieved safe and stable operation,resulting in direct economic benefits of 9.1 million yuan annually.

关 键 词：焦炉烟气 NH4HSO4 酸腐蚀 堵灰 有机热载体余热锅炉 相变换热器 

分 类 号：X784[环境科学与工程—环境工程]