Steam generation critical areas

Process Steam Generation. Steam generated in the process sections of the plant may be at the highest plant pressure level or an intermediate level. Also, the process area may have fired boilers, waste heat boilers, or both. There may be crossties between utility and process generated steam levels. Enough controls must be provided to balance far-ranging steam systems and protect the most critical units in the event of boiler feedwater shortage situations. 

The following are current critical areas where corrosion dramatically impacts safety and reliability of the steam generating equipment ... 

In the 1950s, the idea of using supercritical water (SCW) appeared to be rather attractive for steam generators/turbines in the thermal power industry. The objective was to increase the total thermal efficiency of coal-fired thermal power plants. At supercritical pressures, there is no liquid—vapor phase transition therefore, there is no such phenomenon as critical heat flux or dryout. It is only within a certain range of parameters that deteriorated heat transfer may occur. Work in this area was mainly... 

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