生物质三组分在聚乙二醇辅助热解液化过程中的协同作用

doi:10.3969/j.issn.0253-2417.2017.06.016

Abstract

Abstract: The thermogravimetric analysis(TG) was carried out on the synthesized biomass samples with different proportions of microcrystalline cellulose, xylan and lignin. The co-solvent liquefaction behavior and the synergistic effect of the three-components in the co-solvent liquefaction process were obtained. When the temperature was lower than 350℃, the hemicellulose had a certain promoting effect on the degradation of cellulose; when it was higher than 350℃, there was a significant inhibitory effect. Hemicellulose and cellulose inhibited the lignin degradation; and then the extreme vertex method was used to select the typical ratio of synthesized biomass. The pyrolysis liquefaction products of the co-solvent of synthesized biomass were investigated by pyrolysis chromatography mass spectrometry(Py-GC/MS). The effects of the components of biomass on the co-solvent pyrolysis products were obtained. The results indicated that higher percentage of lignin in synthesized biomass promoted the formation of acids. The existence of cellulose and hemicellulose restrained the production of phenols during lignin co-solvent pyrolysis. More esters were obtained from synthesized samples co-solvent pyrolysis, different proportion of three-components promote the formation of esters.

Key words: biomass, three components, liquefaction, synergetic effect

CLC Number:

TQ35

JIANG Xiaoxiang, LI Jingdan, WANG Jing, SHI Yan, YANG Hongmin, JIANG Jianchun. Synergetic Mechanism of Three Components of Biomass Liquefaction in Polyethylene Glycol[J]. Chemistry and Industry of Forest Products, 2017, 37(6): 117-124.

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Synergetic Mechanism of Three Components of Biomass Liquefaction in Polyethylene Glycol

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