Advancement of Direct Coal Liquefaction

摘要

Direct coal liquefaction has substantially higher efficiency and lowerrncapital investment than indirect coal liquefaction. But it faced morerntechnical challenges. The use of catalysts in micron sizes solves thernmajor bottleneck that conventional substrate-supported catalyst cannotrnfunction well under the dirty environment of coal. Head Water’s HCoalrnprocess, Shenhua’s coal liquefaction process, and ExxonMobil’srnMCL process all adopted the use of micro-catalysts. With the use ofrnmicro-catalysts, it is possible to realize the efficiency and costrnadvantages of direct coal liquefaction.