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Analysis of the Pyrolysis of Solid Recovered Fuel and Its Sorted Components by using TG-FTIR and DAEM

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Abstract

Currently, waste disposal has been highlighted strategically all over the world. Solid recovered fuel (SRF) with a high calorific value is manufactured from municipal solid waste (MSW). Thermogravimetric Fourier transform infrared spectroscopy (TG-FTIR) and distributed activation energy model (DAEM) were utilized to study the pyrolysis of the individual components and their mixture (i.e. SRF), which were obtained from a MSW incineration power plant. The best operating conditions were defined by comparing the effect of heating rates and flow rates of sweep gas. The gaseous products and functional groups in the pyrolysis of each component and their mixture were researched. Additionally, a direct search method was presented to obtain the DAEM kinetic parameters. DAEM equations for volatile products were given to describe pyrolysis of SRF. The model prediction results are consistent with the experimental results. The kinetic data will provide a basis for gas composition regulation from theoretical modeling.

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Abbreviations

T i :

initial temperature in volatilization process/°C

T f :

final temperature in volatilization process/°C

T px :

temperatures at the peaks x in DTG curves/°C

ΔT 1/2 :

temperature range of (dω/dτ)/(dω/dτ)max=1/2/°C

(dω/dτ)max :

maximal devolatilization rate in absolute value form

A:

ash

ad:

air dry basis

CFD:

Computational Fluid Dynamics

DAEM:

distributed activation energy model

Fc:

fixed carbon

FTIR:

Fourier transform infrared spectroscopy

M:

moisture

MBT:

mechanical-biological treatment

MSW:

municipal solid waste

SRF:

solid recovered fuel

TG:

Thermogravimetric

V:

volatile matter

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Acknowledgments

This research is supported by the National Key Research and Development Program of China (2018YFC1901302, 2018YFF0215001, 2017YFC0703100), the Innovative Research Groups of the National Natural Science Foundation of China (51621005), the National Natural Science Foundation of China (51676172), and the Fundamental Research Funds for the Central Universities (No. 2018FZA4010, 2016FZA4010).

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Authors and Affiliations

  1. State Key Laboratory of Clean Energy Utilization, Institute for Thermal Power Engineering, Zhejiang University, Hangzhou, 310027, China

    Lei Wu, Xuguang Jiang, Guojun Lv, **aodong Li & Jianhua Yan

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  1. Lei Wu
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Correspondence to Xuguang Jiang.

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Wu, L., Jiang, X., Lv, G. et al. Analysis of the Pyrolysis of Solid Recovered Fuel and Its Sorted Components by using TG-FTIR and DAEM. J. Therm. Sci. 32, 1671–1683 (2023). https://doi.org/10.1007/s11630-023-1714-1

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