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The high-temperature gasification of solid fuels with oxygen under elevated pressure using the Prenflo process is an environmentally compatible, efficient and economical method of generating power from coal and of producing synthesis and reduction gas. In the Prenflo plant, with a coal throughput of 48t/d, the coal ash is largely converted to granular, inert slags. The sulphur contained in the coal is converted to marketable elemental sulphur using conventional technology. Chlorine is bound as common salt. A clean coal gas is produced containing about 80% of the calorific value of the coal. Sensible heat is converted to high-quality steam, and is used for pre-heating the cleaned coal gas. The high availability of the overall system, sub-assemblies and components is demonstrated. Materials tests result in cost-effective design of components subjected to varying loads. The gasification of pulverised coal in a flame reaction ensures that the plant can be started up and shut down quickly, permits high load change velocities and guarantees part load operation over a wide range. The process development has now been concluded. On the basis of development results, a combined-cycle power plant with upstream Prenflo gasifier for a power plant net rating of 170 MW(el) has been engineered.

Additional information

Authors: WETZEL R, Krupp Koppers GmbH, Essen (DE)
Bibliographic Reference: EUR 13091 EN (1990) 71 pp., FS, ECU 7.50
Availability: (2)
ISBN: ISBN 92-826-1773-4
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