Single pressure steam bottoming cycle for gas turbines combined cycle
Abstract
This patent describes a process for recapturing waste heat from the exhaust of a gas turbine to drive a high pressure-high temperature steam turbine and a low pressure steam turbine. It comprises: delivering the exhaust of the gas turbine to the hot side of an economizer-reheater apparatus; delivering a heated stream of feedwater and recycled condensate through the cold side of the economizer-reheater apparatus in an indirect heat exchange relationship with the gas turbine exhaust on the hot side of the economizer-reheater apparatus to elevate the temperature below the pinch point of the boiler; delivering the discharge from the high pressure-high temperature steam turbine through the economizer-reheater apparatus in an indirect heat exchange relationship with the gas turbine exhaust on the hot side of the economizer-reheater apparatus; driving the high pressure-high temperature steam turbine with the discharge stream of feedwater and recycled condensate which is heated to a temperature below the pinch point of the boiler by the economizer-reheater apparatus; and driving the low pressure steam turbine with the discharged stream of the high pressure-high temperature steam turbine reheated below the pinch point of the boiler by the economizer-reheater apparatus.
- Inventors:
- Publication Date:
- OSTI Identifier:
- 6969611
- Patent Number(s):
- US 4896496; A
- Application Number:
- PPN: US 7-223564A
- Assignee:
- Stone and Webster Engineering Corp., Boston, MA
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 25 Jul 1988
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 20 FOSSIL-FUELED POWER PLANTS; EXHAUST GASES; HEAT RECOVERY; GAS TURBINES; HEAT RECOVERY EQUIPMENT; STEAM TURBINES; WASTE HEAT UTILIZATION; BOTTOMING CYCLES; DESIGN; WASTE HEAT; ENERGY; ENERGY RECOVERY; EQUIPMENT; FLUIDS; GASEOUS WASTES; GASES; HEAT; MACHINERY; RECOVERY; THERMODYNAMIC CYCLES; TURBINES; TURBOMACHINERY; WASTE PRODUCT UTILIZATION; WASTES; 200104* - Fossil-Fueled Power Plants- Components; 200105 - Fossil-Fueled Power Plants- Heat Utilization
Citation Formats
Zervos, N. Single pressure steam bottoming cycle for gas turbines combined cycle. United States: N. p., 1990.
Web.
Zervos, N. Single pressure steam bottoming cycle for gas turbines combined cycle. United States.
Zervos, N. 1990.
"Single pressure steam bottoming cycle for gas turbines combined cycle". United States.
@article{osti_6969611,
title = {Single pressure steam bottoming cycle for gas turbines combined cycle},
author = {Zervos, N},
abstractNote = {This patent describes a process for recapturing waste heat from the exhaust of a gas turbine to drive a high pressure-high temperature steam turbine and a low pressure steam turbine. It comprises: delivering the exhaust of the gas turbine to the hot side of an economizer-reheater apparatus; delivering a heated stream of feedwater and recycled condensate through the cold side of the economizer-reheater apparatus in an indirect heat exchange relationship with the gas turbine exhaust on the hot side of the economizer-reheater apparatus to elevate the temperature below the pinch point of the boiler; delivering the discharge from the high pressure-high temperature steam turbine through the economizer-reheater apparatus in an indirect heat exchange relationship with the gas turbine exhaust on the hot side of the economizer-reheater apparatus; driving the high pressure-high temperature steam turbine with the discharge stream of feedwater and recycled condensate which is heated to a temperature below the pinch point of the boiler by the economizer-reheater apparatus; and driving the low pressure steam turbine with the discharged stream of the high pressure-high temperature steam turbine reheated below the pinch point of the boiler by the economizer-reheater apparatus.},
doi = {},
url = {https://www.osti.gov/biblio/6969611},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 30 00:00:00 EST 1990},
month = {Tue Jan 30 00:00:00 EST 1990}
}