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- W39650594 abstract "This chapter discusses upgrading of liquids from direct coal liquefaction. In a study described in the chapter, liquids obtained by direct coal liquefaction were deasphalted to reduce the heteroatom content and the catalyst deactivation in hydrotreating. Two methods were tried: (1) the deasphalting with hexane in autoclave at 100°C of temperature and 20 kg/cm2 pressure and (2) ultrasonic disgregation in hexane. The latter method was chosen because of the higher yields obtained. The extracted oils were hydrogenated in a continuous hydroprocessing unit. Two different catalysts were used: (1) Harshaw HT-400E containing 3 wt% CoO and 15 wt% MoO3 on gamma alumina, and (2) Harshaw HT-500E containing 15 wt% MoO3 and 3.5 wt% NiO on gamma alumina. They were sulfided for 4 h at 400°C of temperature and atmospheric pressure in the presence of a flowing stream of hydrogen containing 10% H2S." @default.
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- W39650594 date "1991-01-01" @default.
- W39650594 modified "2023-10-09" @default.
- W39650594 title "UPGRADING OF LIQUIDS FROM DIRECT COAL LIQUEFACTION" @default.
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- W39650594 doi "https://doi.org/10.1016/b978-0-7506-0387-4.50190-x" @default.
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