Biomass Thermochemical Conversion via Pyrolysis with Integrated CO 2 Capture

Małgorzata Sieradzka, Ningbo Gao, Cui Quan, Agata Mlonka-Mędrala and Aneta Magdziarz
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Małgorzata Sieradzka: AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland
Ningbo Gao: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Cui Quan: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Agata Mlonka-Mędrala: AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland
Aneta Magdziarz: AGH University of Science and Technology, Mickiewicza 30 Av., 30-059 Krakow, Poland

Energies, 2020, vol. 13, issue 5, 1-18

Abstract: The presented work is focused on biomass thermochemical conversion with integrated CO 2 capture. The main aim of this study was the in-depth investigation of the impact of pyrolysis temperature (500, 600 and 700 °C) and CaO sorbent addition on the chemical and physical properties of obtained char and syngas. Under the effect of the pyrolysis temperature, the properties of biomass chars were gradually changed, and this was confirmed by examination using thermal analysis, scanning electron microscopy, X-ray diffraction, and porosimetry methods. The chars were characterised by a noticeable carbon content (two times at 700 °C) resulting in a lower O/C ratio. The calculated combustion indexes indicated the better combustible properties of chars. In addition, structural morphology changes were observed. However, the increasing pyrolysis temperature resulted in changes of solid products; the differences of char properties were not significant in the range of 500 to 700 °C. Syngas was analysed using a gas chromatograph. The following main components were identified: CO, CO 2 , CH 4 , H 2 and C 2 H 4 , C 2 H 6 , C 3 H 6 , C 3 H 8 . A significant impact of CaO on CO 2 adsorption was found. The concentration of CO 2 in syngas decreased with increased temperature, and the highest decrease occurred in the presence of CaO from above 60% to below 30% at 600 °C.

Keywords: pyrolysis; biomass; pine wood; CO 2 capture; CaO solid sorbent; chars; syngas; hydrogen; physicochemical structure (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (17)

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