超临界流体技术在煤焦油加工中的研究进展

Research progress of supercritical fluid technology in coal tar processing

煤焦油深加工是提高煤焦油附加值的重要工艺。因超临界流体具有的特殊性质,近年来被广泛用于煤焦油深加工的研究中。本文综述了超临界流体技术在煤焦油萃取、提质、催化加氢等方面的研究进展,并提出了未来超临界流体技术在煤焦油加工中的研究重点:1加大对煤焦油在超临界流体萃取、轻质化、催化加氢的机理及其他相关理论研究;2通过选择新型超临界流体、添加新型夹带剂、高效催化剂及条件优化来提高煤焦油在超临界流体中萃取、轻质化及催化加氢的效果;3基于目前的研究结果开发出能够进行工业化的技术方案、工艺流程及相关配套设施。

Coal-tar deep processing is an important process to increase its added value,supercritical fluid is widely used in coal-tar deep processing research nowadays,because of its unique properties. This paper summarizes the research progress of supercritical fluid（SFC）technology in coal-tar processing from three aspects：extraction,upgrading and catalytic hydrogenation. The focus of the future research of supercritical fluid technology in coal tar processing is presented：（1） Do more work on studying the mechanism and other related theory of coal tar extraction,upgrading and catalytic hydrogenation in supercritical fluid.（2） Improve coal tar extraction, upgrading and catalytic hydrogenation performance in supercritical fluid through picking new supercritical fluid,adding late-model entrainer,using novel catalyst and optimizing operation condition.（3） On the basis of study,develop industrialization solutions,process flow and related supporting facilities of coal tar processing under supercritical condition.