Research on the Influence and Prevention Technology of Surface Ash in Solid Waste Incineration Systems
In the field of solid waste reuse,incineration power generation is a common way of reuse,but the accumulation of ash from solid waste incineration can pose a threat to boilers.Therefore,in order to explore the impact of ash accumulation on boilers,a corrosion simulation system for solid waste incineration boilers was established,and the components of ash and corrosion products were analyzed.The experimental results showed that the chlorine content of wood chips and fungi was 0.58%and 0.35%,respectively,both higher than 0.3%;The acid-base ratios of wood chips and templates are 2.25 and 1.96,respectively,both greater than 1.75.It can be seen that the fly ash of biomass fuel has a corrosive effect and a tendency to slag.Boiler ash accumulation includes potassium chloride,sodium chloride,calcium sulfate,and potassium nitrate,among which the sulfur content is higher than that of biomass fuel.The corrosion products of boilers are mainly composed of iron oxide,ferric oxide,potassium sulfate,and iron.Due to the high temperature environment in the boiler,the sulfur dioxide produced during combustion undergoes oxidation reaction,generating alkali metal sulfates.The above results indicate that the proposed method can accurately simulate the situation of solid waste incineration and the impact of ash accumulation on boilers,providing strong reference for the formulation of boiler corrosion and flue blockage prevention measures.
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