DUCT FIRED COMBINED CYCLE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an improved duct fired combined cycle system with overall temperature control, which allows the use of alternative fuels in an efficient manner but without requiring costly upgrades of the heat recovery steam generator and other components.SOLUTION: A combined cycle system 10 may include: a heat recovery steam generator 40 with a first low pressure section and a second low pressure section; a steam turbine 30 with a low pressure steam section 36 in communication with the second low pressure section of the heat recovery steam generator, and a duct burner 66 positioned upstream of the heat recovery steam generator.