Effect of Al2O3 on NOx and SO2 of RDF combustion
The formation of gas products (NOx and SO2) in the combustion of RDF and 0.00 g, 0.02 g, 0.04 g, and 0.08 g Al2O3 at 900 °C was studied by using the experimental platform of a double-tube furnace set up in the laboratory. The results show that mixing Al2O3 can inhibit the formation of volatile NOx, but promote the formation of fixed carbon NOx. Al2O3 can inhibit the increase of total NOx formation during RDF combustion. Al2O3 has a good effect on removing SO2 in the RDF combustion process. When the mixing amount of Al2O3 is 0.00 g, the total amount of SO2 generated is 0.39 mg, and when the mixing amount of Al2O3 is 0.08 g, the total amount of SO2 generated is 0.29 mg, that is, Al2O3 is a good desulfurizing agent.
1 Introduction
The total annual production of municipal solid waste in China increased from 31.3 million tons (1980) to 343 million t (2019) and could reach 480 million t by 2030 [1]. RDF (Refuse-derived fuel) is a fuel derived from the sorting, crushing, drying, and processing of refuse, which has high calorific value, stable combustion, and low dioxin emission [2-4]. Therefore, RDF can be used as a good alternative fuel for firing cement [5-7]. The utilization of MSW into RDF is not only conducive to the reuse of resources, but also reduces environmental pollution. Nowadays, the national and...
