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通过两个系列热模拟实验研究了褐煤干酪根降解与褐煤综合有机母质(包括干酪根和非干酪根物质)热演化生成烷烃的特征。结果表明:干酪根不直接降解生成轻质油,干酪根降解产物中正烷烃无奇偶优势,姥植比较高,而且不随温度变化而大幅度变化,Pr/nC17和Ph/nC18比值随温度升高线性下降;综合有机母质热演化产物中,有轻质油生成,在低温阶段正烷烃有很强的奇偶优势,姥植比随温度升高先是变大然后减小,Pr/nC17和PU/nC18比值随温度升高而反复升降。
Two series of thermal simulation experiments were conducted to study the degradation of kerogen and the thermal evolution of lignite integrated organic parent materials (including kerogen and non-kerogen) into alkanes. The results showed that kerogen did not directly degrade to produce light oil, and n-alkane in kerogen degradation product had no parity. The ratio of Pr / nC17 to Ph / nC18 was linearly increased with increasing temperature Decreased; the organic matter thermal synthesis products, there are light oil generation, n-alkanes in the low temperature stage has a strong parity, the ratio of basal plantation increases and then decreases with increasing temperature, Pr / nC17 and PU / nC18 ratio As the temperature rises and falls repeatedly.