关键词: 煤直接液化, 加氢, 液化石油气, 石脑油, 柴油

Abstract: The development of coal direct liquefaction technology is briefly reviewed and the operation status of the first megaton demonstration unit of coal direct liquefaction process in the world is introduced. By analyzing the problems occurred during the four times of start-up and shut-down operations as well as related revamping, factors influencing long-term operation of the unit are focused. However, this demonstration unit is running smoothly after revamping, and a 1 501 h continuously running indicates that the operation of the unit is safe and controllable. Furthermore, the qualities of the products from this demonstration unit could meet the requirements of related National Standards. All these represent that the operation of this first megaton industrial demonstration unit is successful. Finally, a prospect analysis of coal direct liquefaction industry and issues to be considered on commercialization are discussed as well.

Key words: coal direct liquefaction, hydrogenation, LPG, naphtha, diesel fuel