Low- and medium-Btu coal gasification processes [electronic resource].
- Chicago, Ill : Institute of Gas Technology, 1979. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 69 : digital, PDF file
- Additional Creators:
- Institute of Gas Technology and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Coal gasifiers, for the production of low- and medium-Btu fuel gases, come in a wide variety of designs and capacities. For single gasifier vessels gas energy production rates range from about 1 to 18 billion Btu/day. The key characteristics of gasifiers that would be of importance for their application as an energy source in Integrated Community Energy Systems (ICES) are evaluated here. The types of gasifiers considered here are single- and two-stage, fixed-bed units; fluidized-bed units; and entrained-bed units, as producers of both low-Btu (less than 200 Btu/SCF and medium-Btu (200 to 400 Btu/SCF) gases. The gasifiers are discussed with respect to maximum and minimum capacity, the effect of feed coal parameters, product characteristics, thermal efficiency, environmental effects, operating and maintenance requirements, reliability, and cost. Some of the most recent development work in this area of coal conversion, and use of these gas products also is considered. Except in small plant installations (< 10/sup 9/ Btu/day) the annual operating costs for the various gasifier types are approximately the same. This is somewhat surprising in view of the personnel requirements, efficiencies, utility requirements, heating value of the product gas, and operating characteristics associated with each. Operating costs tend to increase with a power function exponent of 0.92 (i.e., a doubling in plant capacity increases the operating cost by about 1.9).
- Published through SciTech Connect., 01/01/1979., "anl/ces/te-79-1", and Blazek, C.F.; Baker, N.R.; Tison, R.R.
- Funding Information:
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