Bio-oil production from sequential two-step catalytic fast microwave-assisted biomass pyrolysis. (15th May 2017)

• Record Type: Journal Article
• Authors: Liu, Shiyu; Zhang, Yaning; Fan, Liangliang; Zhou, Nan; Tian, Gaoyou; Zhu, Xindi; Cheng, Yanling; Wang, Yunpu; Liu, Yuhuan; Chen, Paul; Ruan, Roger
• Is Part Of: Fuel. Volume 196(2017)
• Page Start: 261
• Page End: 268
• Publication Date: 2017-05-15
• Subjects: Two-step -- Catalytic pyrolysis -- Microwave-assisted -- ZSM-5 -- Aromatic hydrocarbons; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2017.01.116
• Languages: English
• ISSNs: 0016-2361

Abstract

Highlights: Sequential two-step catalytic fast microwave-assisted pyrolysis of corn stover was studied. The pyrolysis and catalytic cracking and upgrading processes can be flexibly and independently controlled. High selectivity of aromatic hydrocarbons was obtained by small catalyst loading. HZSM-5 catalyst has good stability in the catalytic upgrading process. Abstract: A sequential two-step fast microwave-assisted pyrolysis (fMAP) for high quality bio-oil production was investigated. In the process, fMAP was followed by catalytic cracking and upgrading using a packed bed catalyst reactor with HZSM-5 as the catalyst. Effects of pyrolysis temperature, catalyst loading, and catalyst bed temperature on the product distribution were investigated. Results showed that maximum bio-oil and aromatic hydrocarbons yields were obtained when pyrolysis temperature reached 550 °C With the increase in the catalyst loading, the bio-oil yield decreased linearly while the aromatic hydrocarbons yield increased. The catalyst bed temperature also has a significant effect on the product chemical profiles. The aromatic hydrocarbons proportion of the bio-oil was found to increase with increasing catalyst bed temperature and reached its maximum of 26.20% at 425 °C. In addition, coke yield increased with increasing catalyst to biomass ratio and decreasing catalyst bed temperature.