Materials for coal gasification power plant
Coal gasification offers the possibility of a clean technology to generate electricity from coal, and is now at the final stage prior to full commercial development. The proceedings of the workshop indicate that commercially available materials will probably be adequate to provide long-term service, in excess of 10-15 years, in coal gasifiers, especially at the relatively low temperatures (350-450 C) of the present first generation designs. For higher temperature components (for instance, steam superheaters or hot gas clean-up systems operating in the range 500-600 C) more highly alloyed materials, with a greater resistance to sulfidation than standard stainless steel, will probably be required. Economic calculations based on reliable operating data from demonstration plants still show that coal gasification is almost cost-competitive with conventional pulverised coal boilers, while producing five to ten times less toxic air pollutants, such as SO(x) and NO(x), when gasifying high sulfur coals. However, for low sulfur coals used in areas where low temperature cooling water is readily available, pulverised coal plants have a decided cost advantage at present, while the reduction in air pollutants is less significant. Materials studies for such plants need to emphasise the identification of less expensive materials to reduce costs.
Bibliographic Reference: EUR 15345 EN (1994)
Availability: Butterworth-Heinemann Limited, Linacre House, Jordan Hill, Oxford OX2 8DP (GB)
Record Number: 199510508 / Last updated on: 1995-04-11
Original language: en
Available languages: en