阅读说明：本技术 使用超临界二氧化碳生产碳纤维的中间相沥青 (Mesophase pitch for carbon fiber production using supercritical carbon dioxide ) 是由 本杰明·L·古德里奇 金平忠 马修·塔吉特 乔舒亚·C·沃尔特 于 2020-03-17 设计创作，主要内容包括：描述了使用超临界二氧化碳来改进用于碳纤维生产的中间相沥青的方法的实施方案。该方法提高了已经具有至少一些中间相沥青的原料诸如煤焦油中中间相沥青的相对量和品质。一种特定的方法包括对煤焦油进行sCO-(2)/甲苯提取,以获得煤焦油的甲苯不溶性级分；将甲苯不溶性级分与sCO-(2)混合,以获得sCO-(2)/甲苯不溶性级分混合物；以及,挤出sCO-(2)/甲苯不溶性级分混合物,从而使sCO-(2)与甲苯不溶性级分分离以获得中间相沥青的纤维。(Embodiments of a method of using supercritical carbon dioxide to improve mesophase pitch for carbon fiber production are described. The process improves the relative amount and quality of mesophase pitch in feedstocks that already have at least some mesophase pitch, such as coal tar. A specific method comprises subjecting coal tar to sCO 2 Toluene extraction to obtain a toluene insoluble fraction of coal tar; separating the toluene-insoluble fraction with sCO 2 Mixing to obtain sCO 2 TolueneAn insoluble fraction mixture; and, extruding sCO 2 Toluene insoluble fraction mixture, resulting in sCO 2 Separated from the toluene insoluble fraction to obtain fibers of mesophase pitch.)