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首页> 美国卫生研究院文献>Scientific Reports >Full-scale experimental investigation of deposition and corrosion of pre-protector and 3rd superheater in a waste incineration plant
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Full-scale experimental investigation of deposition and corrosion of pre-protector and 3rd superheater in a waste incineration plant

机译：垃圾焚烧厂中预保护器和第三过热器的沉积和腐蚀的全面实验研究

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摘要

Municipal solid waste (MSW) incineration is widely adopted as a waste management strategy and for the energy production. However, this technology experience grave deposition and corrosion of the boiler tubes due to high chlorine (~1.09wt.%) and alkali metal (Na, K) content in MSW. Little is known about the concentration profile of these corrosive elements in the deposits at different boiler locations. Therefore, a full-scale experimental investigation was conducted to determine the concentration profile of Cl, K, Na, S, and Ca in the deposits at pre-protector and compare with those at 3rd superheater during MSW combustion at a 36 MWe waste incineration plant (WIP) in Chengdu, China. The deposit samples were analyzed using wet chemical techniques, scanning electron microscope coupled with energy dispersive spectroscopy (SEM/EDS), and X-ray diffraction (XRD). The concentrations of Na, K, and Cl were high in the deposits at pre-protector while S and Ca concentrations were high on the 3rd superheater. The pre-protector was severely corroded than the 3rd superheater. The governing mechanisms for the deposition and corrosion on these boiler locations were elucidated.
机译：市政固体废物（MSW）焚烧被广泛用作废物管理策略和用于能源生产。但是，由于MSW中的高氯（〜1.09wt。％）和碱金属（Na，K）含量，该技术会严重沉积并腐蚀锅炉管。对于这些腐蚀性元素在不同锅炉位置沉积物中的浓度分布知之甚少。因此，进行了全面的实验研究，以确定预保护器中沉积物中Cl，K，Na，S和Ca的浓度分布，并与MSW期间3 过热器的沉积物进行比较。在中国成都的36 MWe垃圾焚烧厂（WIP）进行燃烧。使用湿化学技术，扫描电子显微镜，能量色散光谱法（SEM / EDS）和X射线衍射（XRD）分析沉积物样品。预保护器中沉积物中Na，K和Cl的浓度较高，而3 过热器中的S和Ca浓度较高。预保护器比3 rd 过热器严重腐蚀。阐明了这些锅炉位置上的沉积和腐蚀的控制机制。

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