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The goal of this project is to perform the pre-front end engineering design (Pre-FEED) of a gas fired advanced ultrasupercritical (A-USC) steam superheater capable of operating at 760 degrees Celsius (ºC)steam temperature. The superheater would be part of a future A-USC component test program. The pre-front end engineering design package will include data definition, systems evaluation and materials/components selection that would be needed to complete final engineering design of the A-USC steam superheater in an A-USC component test facility. Plans for the steam superheater manufacturing, construction, commissioning, operation and testing will also be developed in this project.
The expected results of the project will be the completed pre-front end engineering package for procurement, construction, and installation of an A-USC steam superheater capable of operating at 760 ºC, and as close as possible to the mechanical stress conditions that would be expected in a commercial scale A-USC superheater.
This project may reduce the economic risk of the first A-USC demonstration plant. This project may result in up to an 11% reduction in fuel consumption and CO2 emissions compared to 600ºC plant heat rate, and up to a 29% reduction versus the current fleet average heat rate and CO2 emissions. Replacing existing units with new A-USC plants could help meet EPA’s CO2 emission goal without carbon capture. It could also help lower CO2 emission and auxiliary power consumption for carbon capture.