Details

Autor(en) / Beteiligte

• Zhou, Nan
• Zhou, Junwen
• Dai, Leilei
• Guo, Feiqiang
• Wang, Yunpu
• Li, Hui
• Deng, Wenyi
• Lei, Hanwu
• Chen, Paul
• Liu, Yuhuan
• Ruan, Roger

Titel

Syngas production from biomass pyrolysis in a continuous microwave assisted pyrolysis system

Ist Teil von

• Bioresource technology, 2020-10, Vol.314, p.123756-123756, Article 123756

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •A novel continuous microwave assisted pyrolysis system designed to produce syngas.•Gas product is of higher yields and quality than from conventional pyrolysis.•Tars reduced from 7.83 g/Nm3 to below detection limit by physical removal means.•7.2 MJ electrical energy/kg wood consumed to obtain a cold gas efficiency of 73.3%•Potential improvements allow a net electricity generation from the process. In light of the knowledge gap in the scale-up of microwave-assisted pyrolysis technology, this study developed a continuous microwave-assisted pyrolysis (CMAP) system and examined its feasibility for syngas production. Wood pellets were pyrolyzed in the system under various temperatures, and the product distribution and energy efficiency were investigated. At a processing temperature of 800 °C, the CMAP system obtained a high quality producer gas (lower heating value 18.0 MJ/Nm3 and a 67 vol% syngas content) at a yield of 72.2 wt% or 0.80 Nm3/kg d.a.f. wood, outperforming several conventional pyrolysis processes probably due to two factors: 1) reactions between primary tar and biochar enhanced by microwave irradiation, and 2) the absence of carrier gas in the process. Energy efficiency of the process was also assessed. Potentially the electricity consumption could be reduced from 7.2 MJ to 3.45 MJ per kg of wood, enabling net electricity production from the process.