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利用GC-MS对松木屑低温热解液的组成成分进行分析,并探讨热解液的形成机理。松木屑低温热解液主要为含氧化合物,随热解温度的升高会发生二次反应生成新的化合物。400℃热解液的组成来源于松木屑中木质素、纤维素和半纤维素中大分子键的断裂。在热解温度由400℃升高到600℃的过程中,松木屑热解液经历了由酮类、呋喃类和愈创木酚类化合物向甲苯、苯甲醛等苯基化合物和酚类化合物的转化,部分酚类化合物则进一步转化为萘及其衍生物和茚及其衍生物。
GC-MS was used to analyze the composition of low-temperature pyrolytic pinewood pyrolysis liquid composition and to discuss the formation mechanism of pyrolysis liquid. Low temperature pyrolysis of pine chips mainly oxygenated compounds, with pyrolysis temperature will occur secondary reaction of new compounds. The composition of the 400 ℃ pyrolysis liquid is derived from the breakage of macromolecular bonds in lignin, cellulose and hemicellulose in pine chips. During the pyrolysis temperature rise from 400 ℃ to 600 ℃, the pine wood chip pyrolysis liquid has experienced the conversion of ketones, furans and guaiacol compounds into phenyl and phenolic compounds such as toluene and benzaldehyde Conversion, some of the phenolic compounds are further converted into naphthalene and its derivatives and indene and its derivatives.