Two-step coal liquefaction is a hydrogen efficient route to distillate fuels. [Cities Service two-step process] [electronic resource].
- Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1979.
- Physical Description:
- Pages: 26 : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Office of Scientific and Technical Information
- Cities Service's efforts in catalytic hydrogenation and in the upgrading of solvent refined coal have led to the development of a new coal liquefaction technology called Two-Step Coal Liquefaction, TSL. The process is composed of a solvent refined coal unit operating in tandem with an LC-Fining unit. LC-Fining (Lummus/Cities Fining) is a proprietary catayltic hydrogenation process for upgrading heavy oil feedstocks. In Two-Step Liquefaction, coal is dissolved in a process-derived solvent, partially hydrogenated, and catalytically hydrocracked. Coal dissolution and catalytic upgrading are conducted in separate reactors, allowing each step to be performed at optimum conditions. Hydrogen generation inefficiencies represent the major energy loss from the liquefaction facility. An estimate of the magnitude of these losses is given for the Two-Step Coal Liquefaction and for an SRC-II liquefacton plant. The TSL process achieves a significant reduction in hydrogen consumption relative to SRC-II. The impact of this reduction in hydrogen plant operating expenses is substantial and represents a pretax saving of approximately $20,000/D. The magnitude of this saving is directly linked to the cost of energy and is, thus, likely to increase in the future.
- Published through SciTech Connect.
Annual fall conference of the Canadian Society for Chemical Engineering, Sarnia, Ontario, Canada, 30 Sep 1979.
Carson, T.C.; Hastings, K.E.; Potts, J.D.; Caspers, J.
Cities Service Co., Tulsa, OK (USA). Technology Assessment Dept.
Lummus Co., Bloomfield, NJ (USA)
- Funding Information:
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