Microstructural characterisation if high temperature oxidation of boiler materials for coal fuelled power plants
thesisposted on 23.09.2013 by Evans O. Mogire
In order to distinguish essays and pre-prints from academic theses, we have a separate category. These are often much longer text based documents than a paper.
Due to the projected increase in global electricity demand, it is estimated that nearly 1400GW of new coal fired power plants will be built providing about 38% of global electricity demand in 2030. This growth will have a negative impact on the environment through the emission of CO2, a greenhouse gas detrimental to the climate, unless stringent emission targets for the coal fired power plants are put in place. This has resulted in placing more emphasis on the need for adopting the best available technologies for ‘new built’ plants or through retrofit of existing plants or the construction of high efficiency power plants with CO2 capture and storage technologies. The high efficiency power plants are mainly achieved by operating the boilers at higher temperatures of up to 700°C compared to the conventional power plants operating at ~ 565°C. This expected temperature increase will have an effect on the material degradation mechanisms of both the existing and proposed new alloy materials for the critical components of the boilers, that is, headers, superheaters, reheaters and wall membranes. This thesis explores the material degradation mechanisms associated with the high temperature oxidation and/or corrosion of the alloy materials found in these components. [Continues.]
The Energy Programme, which is a Research Councils UK cross council initiative led by EPSRC and contributed to by ESRC, NERC, BBSRC and STFC, and specifically the Supergen initiative [Grants GR/S86334/01 and EP/F029748] and the following companies; Alstom Power Ltd., Doosan Babcock, E.ON, National Physical Laboratory, Praxair Surface Technologies Ltd, QinetiQ, Rolls-Royce PLC, RWE npower, Siemens Industrial Turbomachinery Ltd. and Tata Steel
- Aeronautical, Automotive, Chemical and Materials Engineering