WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Effect of Al₂O₃ on NO_x and SO₂
of RDF combustion

All authors

1 Diagram of the experimental system of tubular furnace reactor

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2 Variation curves of CO, NO_x, and SO₂ with time for RDF combustion at 900 °C

3 900 °C release curve of CO, NO_x and SO₂ over time when RDF is burned with different Al₂O₃ masses mixed

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4 Total amount of CO, NO_x and SO₂ produced when RDF is burned with different Al₂O₃ masses at 900 °C

The formation of gas products (NO_x 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 NO_x, but promote the formation of fixed carbon NOx. Al₂O₃ can inhibit the increase of total NO_x 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...

TEXT Zhengming Yi^1,2, Zihang Zhou^1,2, Juan Zhou^1,2, Lichen Shi^1,2, Xiaolin Chen^1,2* ¹State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan / China; ²Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan / China

*Corresponding author:

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