CO-PYROLYSIS KINETIC, THERMODYNAMIC AND FAST PYROLYSIS PRODUCT CHARACTERASTICS OF LONG FLAME COAL AND FURFURAL RESIDUE

Zeng Yongfu; Tian Yishui; Hu Erfeng; Qu Rui; Li Chenhao; Dai Chongyang

doi:10.19912/j.0254-0096.tynxb.2023-0557

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (8) : 621-627. DOI: 10.19912/j.0254-0096.tynxb.2023-0557

CO-PYROLYSIS KINETIC, THERMODYNAMIC AND FAST PYROLYSIS PRODUCT CHARACTERASTICS OF LONG FLAME COAL AND FURFURAL RESIDUE

Zeng Yongfu¹, Tian Yishui², Hu Erfeng¹, Qu Rui¹, Li Chenhao¹, Dai Chongyang¹

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Abstract

The co-pyrolysis characteristics of furfural residue and low-rank long-flame coal were systematically investigated. Using thermogravimetric analyzer （TG） and infrared fast pyrolysis reactor, the effect of heating rate on the co-pyrolysis product distribution of furfural residue and long-flame coal and the synergistic effect between them were researched. TG results show that the interaction between cellulose in furfural residue and carbon-containing organic components produced by pyrolysis of long flame coal occurs in the pyrolysis range of 300~600 °C. The activation energies calculated by KAS and FWO are 69.80~256.04 kJ/mol and 71.24~253.43 kJ/mol, respectively. At 20, 30 and 40 °C/min, the average pre-exponential factor is 1.53×10¹³/min （KAS） and 2.53×10¹³/min（FWO）. The co-pyrolysis results show that： when the heating rate increases from 10 °C/s to 30 °C/s, the tar yield first increases from 8.67% to 9.24%, then decreases to 8.3%, the water yield decreases from 15.92% to 14.73% and then increases to 15.26%, the gas yield increases from 25.12% to 26.66% and the char yield decreases from 50.29% to 49.78%. Simulated distillation results suggest that the content of light components in tar is approximately 70%, while the proportion of heavy components is relatively small, due to the fact that the co-pyrolysis of furfural residue and long flame coal under rapid infrared heating is advantageous for tar upgrading and generates positive synergy.

Key words

biomass / long flame coal / co-pyrolysis / tar / furfural residue / pyrolysis characteristics / infrared heating

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Zeng Yongfu, Tian Yishui, Hu Erfeng, Qu Rui, Li Chenhao, Dai Chongyang. CO-PYROLYSIS KINETIC, THERMODYNAMIC AND FAST PYROLYSIS PRODUCT CHARACTERASTICS OF LONG FLAME COAL AND FURFURAL RESIDUE[J]. Acta Energiae Solaris Sinica. 2024, 45(8): 621-627 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0557

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