State of the art chimney for FGD non-reheat service
Conference
·
OSTI ID:514830
- Stone and Webster, Boston, MA (United States)
- Pullman Power Products Corp., Kansas City, MO (United States)
- Indianapolis Power and Light Co., IN (United States)
This paper provides an overview of the configuration, materials of construction, auxiliary systems, and design details for a large, multiple (3) flue chimney servicing a wet limestone flue gas desulfurization system (FGDS) at Indianapolis Power and Light Company`s (IPL) Petersburg Station--Units 1 and 2. This project was initiated by IPL in response to the Clean Air Act Amendment of 1990 and is intended to treat the flue gas from two base loaded coal fired units with a combined capacity of approximately 700 MW gross electrical output. The reinforced concrete chimney shell is 80 ft. in diameter and 621 ft. in height with three independent acid resistant brick and mortar (ARBM) liners. A separate liner is dedicated to each units` absorber module with the third liner dedicated to Unit No. 2 bypass mode. The existing Unit 1 and 2 stack serves as the Unit 1 by-pass flue. The scrubbed gas liners are sized for low velocity, non-reheat service to prevent re-entrainment of any liquid carry-over from the liner walls. Both of these liners are equipped with alloy exit chokes to increase gas velocity for better plume dispersion. The absorber outlet ducts, the chimney breeching duct, the breeching section of the liner, and the exit chokes are all equipped with liquid collection devices designed to minimize stack liquid discharge. The paper discusses the unique design features associated with this non-reheat chimney, and the challenges these features presented during the chimney`s design and construction.
- OSTI ID:
- 514830
- Report Number(s):
- CONF-970456--
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:7239531