生活垃圾协同焚烧污泥对飞灰物性的影响

Using a 750 t / d mechanical grate furnace of a waste incineration plant as research object, the effect of domestic sludge co-incineration on the physical and chemical properties of fly ash was investigated by sampling and analyzing the fly ash at the bag filter under the working conditions of different sludge blending ratios. The results showed that: sludge blending modified the particle size distribution of the fly ash at the bag filter, which was bimodal and unimodal in the unblended and blended conditions, respectively, but the main peaks were both located within 10 microns;sludge blending increased the fine particles adhering to the surface of the fly ash with the peak particle size. A comparison of the elemental composition of calcium and chloride in the fly ash showed that the elemental composition of the fly ash was strongly affected by the deacidification process, which significantly increased its calcium content; co-incineration sludge increased the element iron and sulfur content of the fly ash, but had a relatively little effect on the sodium and potassium elements.