Co-combustion of aged refuse and municipal solid waste under increased N₂/O₂ atmospheres: kinetics analysis, thermodynamic characteristics

ABSTRACT

In this work, the kinetic behaviors and thermodynamic characteristics of aged refuse (AR) and municipal solid waste (MSW) under distinguishing conditions (blending ratios, heating rates, oxygen concentrations) had been investigated. Combining a low proportion of AR would promote the combustion of MSW, and 10%AR presented the best activation energy E_exp (166.62 kJ/mol). For the 10%AR, the heating rate of 40°C/min can reach the best comprehensive combustibility S (29.14%²°C⁻³min⁻²) and the burning temperature range had increased to 270.6°C727.6°C. When the oxygen concentration changed from 10% to 30%, the residual mass M_f dropped from 29.52% to 14.24%. This paper proposes a recycling strategy of AR by mixing combustion with MSW.

KEYWORDS:

• Municipal solid waste
• aged refuse
• co-combustion
• kinetics
• combustion environment

Disclosure statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Author statement

Debo Li: Investigation, Methodology, Writing - original draft, Funding acquisition. Yongxin Feng: Conceptualization, Funding acquisition, Supervision, Writing - review & editing. Zhihao Chen: Investigation, Methodology, Writing - review & editing. Zhaoli Chen: Investigation, Methodology, Resources, Supervision. Meirong Li: Experiment, Writing - review & editing. Yanhui Bin: Writing - review & editing. Zhaosheng Yu: Resources, Supervision.

Additional information

Funding

This work was supported by the Research and engineering application of key technologies for combustion in waste incineration power plants and synergistic removal of multiple pollutants from flue gas [NYJS2020KJ005].

Notes on contributors

Debo Li

Debo Li is a currently Professor-level Senior Engineer (Senior) in Chinese Association of Science and Technology. He received his PHD from China University of Mining and Technology, Xuzhou, China. He has experience in coal-fired power plant pollutant emissions, coal combustion. His current research involves sludge and coal mixed burning, multiphysics numerical simulation, high temperature corrosion.

Zhaosheng Yu

Zhaosheng Yu received his PHD in School of Electric Power from South China University of Technology in 2009 (supervised by Prof. Xiaoqian Ma) and then worked as an associate Professor with Prof. Xiaoqian Ma in Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, Guangzhou, China. His current research interests include utilization of combustible solid waste, pyrolysis bio-oil upgrading, multilamellar MFI nanosheets catalysis, numerical simulation.