Microwave-assisted catalytic upgrading of co-pyrolysis vapor using HZSM-5 and MCM-41 for bio-oil production: Co-feeding of soapstock and straw in a downdraft reactor. (March 2020)

• Record Type: Journal Article
• Authors: Wu, Qiuhao; Wang, Yunpu; Jiang, Lin; Yang, Qi; Ke, Linyao; Peng, Yujie; Yang, Sha; Dai, Leilei; Liu, Yuhuan; Ruan, Roger
• Is Part Of: Bioresource technology. Volume 299(2020)
• Publication Date: 2020-03
• Subjects: Microwave-assisted co-pyrolysis -- Soapstock -- Straw -- MCM-41 catalyst -- HZSM-5 catalyst; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2019.122611
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: The addition of MCM-41 was beneficial in prolonging the life of HZSM-5. The optimal operating conditions were determined. Co-pyrolysis of soapstock with straw advanced the deoxygenation especially phenol. Co-pyrolysis with a dual-catalyst system is a promising technology. Abstract: Microwave-assisted co-pyrolysis of low hydrogen-to-carbon and high hydrogen-to-carbon effective ratio materials with the aid of HZSM-5 and MCM-41 is a promising technique to improve the bio-oil quality. The low content of hydrocarbons and short life cycle of catalyst limit the application of pyrolysis technology in biomass energy conversion. The effects of catalytic temperature, and HZSM-5-to-MCM-41, feedstock-to-catalyst, and straw-to-soapstock ratios on the yield and composition of bio-oil were studied in this work. The quality of bio-oil during biomass pyrolysis can be improved by adjusting the operating conditions. The optimal catalytic temperature, and ratios of HZSM-5-to-MCM-41, feedstock-to-catalyst, and straw-to-soapstock were 400 °C, 1:1, 2:1, and 1:2, respectively. The addition of MCM-41 was beneficial in prolonging the life of HZSM-5 since the macromolecular compounds cracked when MCM-41 was added which restrain the generation of coke. The co-pyrolysis of soapstock with straw advanced the deoxygenation of oxygen-containing compounds especially phenol from straw during pyrolysis.