水热处理对不同变质程度煤加氢液化反应性的影响

Impact of Hydro-thermal Treatment on Hydrogenation Liquefaction Reaction of Coal Metamorphosed in Different Degrees

分析了4个温度下水热处理对不同变质程度煤加氢液化反应性的影响。结果表明：（1）200℃-250℃为褐煤和长焰煤加氢液化较好的水热处理温度。（2）在实验条件下，水热处理温度200℃．250℃，褐煤总转化率和油、气产率可达到84．70％和79．29％，沥青烯和前沥青烯产率为5．41％；长焰煤相对应的数据分别为78．2％、70．72％和7．48％。（3）水热处理温度〉250℃或〈200℃，褐煤和长焰煤液化反应性均降低。

The impact of the hydro-thermal treatment on hydrogenation liquefaction reaction of the coal metamorphosed in different degrees was analyzed. The result showed that （ 1 ）the preferable hydro-thermal temperature for the hydrogenation liquefaction reaction of the lignite and long-flame coal was 200 ℃-250 ℃; （2）at the experimental conditions, i.e. the hydro- thermal treatment temperature was at 200 ℃-250 ℃, the total conversion rate of lignite and the oil/gas production rate were 84.70% and 79.29%, respectively, the production rate of asphaltene and preasphaltene was 5.41%; the corresponding data of long-flame coal was 78.2%, 70.72% and 7.48%, respectively; （3）in case the hydro-thermal treatment temperature was greater than 250 ℃ or less than 200 ℃, the liquefaction reactivity of the lignite and long-flame coal decreased.