Coal, oil and natural gas are globally still the most important fuels for electricity generation. In most power stations, the fuel is used to produce steam which then drives a turbine. Nickel-containing materials are frequently selected for their corrosion and heat resistance in order to increase durability in demanding situations in the boiler and heat exchangers. Steam temperatures and pressures are continually being increased because this improves the overall thermodynamic efficiency of the process as well as reducing CO2 emissions. This requires the use of more creep resistant materials in the turbines. Finally, the flue gas may require treatment to reduce pollution: nickel-containing materials may be needed to resist the aggressive conditions in electrostatic dust precipitators and flue gas desulphurisation (FGD) units.
There is increasing use of gas turbines for local electricity generation, including combined heat and power (CHP) installations. The materials requirements are similar to those discussed in the Transportation section. On an even smaller scale, micro-generation, for example, using Stirling cycle engines will use heat resisting stainless steels and nickel alloys.
Nickel-containing materials will also be needed in many “clean coal” technologies, including coal gasification, and carbon capture and storage (CCS) schemes – all aimed at reducing CO2 emissions.
News & Articles
- 10023 Life-Cycle Cost Comparison of Alternative Alloys for FGD Components
- 10024 Use of Nickel Stainless Steels and Nickel Alloys in Flue Gas Desulphurization Systems in the U.S.A
- 10025 Flue Gas Desulphurization in Europe
- 10027 Welding and Fabrication of Nickel Alloys in FGD Systems
- 10040 The Right Metal for Heat Exchanger Tubes
- 10056 Practical Guide to High Temperature Alloys
- 10072 Nickel-Containing Materials in Flue Gas Desulfurization Systems
- 10086 Corrosion-and-Heat-Resistant Nickel Alloys
- 11011 Materials Workshop for the Power Industry - Proceedings
- 11020 Guidelines for Wallpapering Sheet Lining with Nickel-Chromium-Molybdenum Alloys
- 11021 High Performance Stainless Steels
- 12001 LCC Benefits of Constructing an FGD System with Selected Stainless Steels and Nickel-Base Alloys
- 14029 Fabrication Options for Nickel-Containing Alloys in FGD Service: Guidelines for Users
- 14055 Corrosion Resistance of Duplex and 4-6 percent Mo-Containing Stainless Steels in FGD Scrubber Absorber Slurry Environments
See also Fabrication and Flue Gas Desulphurization