Thermogravimetric investigation on co-combustion characteristics and kinetics of antibiotic filter residue and vegetal b
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Thermogravimetric investigation on co‑combustion characteristics and kinetics of antibiotic filter residue and vegetal biomass Chang’an Wang1 · Liyan Jin1 · Yikun Wang2 · Lin Zhao1 · Gaofeng Fan1 · Maobo Yuan1 · Yongbo Du1 · Defu Che1 Received: 29 February 2020 / Accepted: 18 September 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract Antibiotic filter residue (AFR) is a typical deep-utilized biomass waste residue with high yield, which is difficult to burn be individually utilized as fuel due to its poor combustion characteristics. The co-combustion of AFR with vegetal biomass is likely to be an effective approach to enhance the combustion performance of AFR, while the co-firing mechanism and kinetics have yet to be fully understood. The present study aimed to investigate the co-combustion characteristics and kinetics of antibiotic filter residue and vegetal biomass (forestall biomass and agricultural biomass) by thermogravimetric experiments and kinetics analysis. The experimental results showed that the co-firing of AFR with peanut shell and poplar improved the combustion characteristics of AFR. Kinetic analysis indicated that the optimal solid-phase reaction models of the blend combustion were diffusion models. The specific form of the reaction function varied with the type and mass fraction of the blends. The present study can provide an improved understanding of the clean and efficient utilization of antibiotic filter residue by co-combustion. Keywords Antibiotic filter residue · Biomass fuel · Combustion · Thermogravimetric analysis · Kinetic analysis · Mechanism function
Introduction As a country dominated by thermal power generation, China has been striving to diversify the energy structure [1]. Coal occupies an all-important position in Chinese energy generation and chemical industry. However, the direct combustion of coal in utility boiler gives rise to a large number of flue gas pollutants, such as nitrogen oxides (NOx), sulfur dioxide (SO2), particle matter (PM), heavy metal, and carbon dioxide (CO2) [2]. These pollutants could cause a series of environmental problems and bring about threats to human health. Meanwhile, with the rapid development of power industry in China, the excessive dependence on coal cannot meet the practical demand [3]. In order to protect the environment, reduce the excessive use of fossil fuels, and * Chang’an Wang [email protected] 1
State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Xi’an Thermal Power Research Institute Company, Ltd., Xi’an 710054, China
2
save coal resources, the utilization of biomass fuel in power generation is considered as an effective supplement and/or replacement. Biomass fuels are becoming more and more widely used all over the world, China as well. By 2020, biomass energy accounts for 3 × 104 MW of China’s total power generation, occupying approximately 3% of the total power. The European Union requires that the proporti
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