Effect of torrefaction pretreatment and catalytic pyrolysis on the pyrolysis poly-generation of pine wood. (August 2016)

• Record Type: Journal Article
• Authors: Chen, Dengyu; Li, Yanjun; Deng, Minsi; Wang, Jiayang; Chen, Miao; Yan, Bei; Yuan, Qiqiang
• Is Part Of: Bioresource technology. Volume 214(2016)
• Page Start: 615
• Page End: 622
• Publication Date: 2016-08
• Subjects: Torrefaction -- Pyrolysis poly-generation -- Pine wood -- Catalytic pyrolysis -- HZSM-5; 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.2016.04.058
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Torrefaction decreases oxygen content and enhances the heating value of pine wood. The oxy-compound content of bio-oil decreases after using torrefaction and catalyst. Torrefaction and HZSM-5 catalyst significantly increase the aromatic hydrocarbons. Biochar has higher mass and energy yield than those of other pyrolysis products. Combination of torrefaction and HZSM-5 is a promising method for products upgrading. Abstract: Torrefaction of pine wood was performed in a tube furnace at three temperatures (220, 250, and 280 °C) for 30 min. Then catalytic pyrolysis of raw and torrefied pine wood was performed using HZSM-5 catalyst in a fixed-bed pyrolysis reactor at 550 °C for 15 min. Torrefaction pretreatment and catalytic pyrolysis have an very important effect on the yield, property, and energy distribution of pyrolysis products. The results showed that the yield of biochar rapidly increased, while that of bio-oil decreased with increasing torrefaction temperature. The oxy-compound content of bio-oil, such as acids and aldehydes, sharply decreased. However, the aromatic hydrocarbon content not only increased but also further promoted by HZSM-5 catalyst. With highest mass yields and energy yields, biochar was also the very important product of pyrolysis. The oxygen content in biomass was mainly removed in the form of CO2 and H2 O, leading to increasing CO2 content in non-condensable gas.