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Title: 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}
}