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通过对富含树皮体的煤和半丝质体的煤进行液化研究和结构分析,探讨其液化产品的产率与结构参数之间的关系。富含树皮体的煤的氢含量和挥发分含量均高,H/C原子比也很高。13C-核磁共振分析表明,所有用煤都以芳香族碳为主。WEST样品的芳碳率最高,LP、CG和DHB样品中CH2基团碳含量高于CH3基团碳含量,且CH2基团碳含量高于其他三个样品。而P858样品中CH3基团碳含量高于CH2基团碳含量。液化结果表明,LP、CG和DHB有高的液化转化率和油收率。煤液化的油收率和煤结构中的CH2基团碳含量以及转化率和煤的芳碳率之间都存在明显的相关关系。因此,13C-核磁共振技术可以用来预测煤液化产品的收率。
Through the liquefaction research and structural analysis of briquette-rich coal and semi-silk coal, the relationship between the yield of liquefied products and the structural parameters was discussed. Bark rich in coal hydrogen content and volatile content are high, H / C atomic ratio is also high. 13C-NMR analysis showed that all coal was dominated by aromatic carbon. The aromatic carbon rate of WEST samples was the highest, while that of LP, CG and DHB samples was higher than that of CH3 and that of CH2 was higher than that of the other three samples. While the content of CH3 group in P858 sample is higher than that of CH2 group. Liquefaction results show that LP, CG and DHB have high liquefaction conversion and oil yield. There is a clear correlation between coal liquefaction oil yield and carbon content of CH 2 groups in coal structure, as well as conversion rate and coal carbon aromaticity. Therefore, 13C-NMR can be used to predict the yield of coal liquefaction products.