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Title: Method and apparatus for fuel gas moisturization and heating

Abstract

Fuel gas is saturated with water heated with a heat recovery steam generator heat source. The heat source is preferably a water heating section downstream of the lower pressure evaporator to provide better temperature matching between the hot and cold heat exchange streams in that portion of the heat recovery steam generator. The increased gas mass flow due to the addition of moisture results in increased power output from the gas and steam turbines. Fuel gas saturation is followed by superheating the fuel, preferably with bottom cycle heat sources, resulting in a larger thermal efficiency gain compared to current fuel heating methods. There is a gain in power output compared to no fuel heating, even when heating the fuel to above the LP steam temperature.

Inventors:
 [1];  [2]
  1. Niskayuna, NY
  2. Ballston Lake, NY
Issue Date:
Research Org.:
General Electric Co., Schenectady, NY (United States)
OSTI Identifier:
874443
Patent Number(s):
6389794
Assignee:
General Electric Company (Schenectady, NY)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01K - STEAM ENGINE PLANTS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
FC21-95MC31176
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; fuel; gas; moisturization; heating; saturated; water; heated; heat; recovery; steam; generator; source; section; downstream; pressure; evaporator; provide; temperature; matching; hot; cold; exchange; streams; portion; increased; mass; flow; due; addition; moisture; results; power; output; turbines; saturation; followed; superheating; bottom; cycle; sources; resulting; larger; thermal; efficiency; compared; current; methods; lp; heat exchange; steam generator; fuel gas; heat source; power output; heat recovery; /60/

Citation Formats

Ranasinghe, Jatila, and Smith, Raub Warfield. Method and apparatus for fuel gas moisturization and heating. United States: N. p., 2002. Web.
Ranasinghe, Jatila, & Smith, Raub Warfield. Method and apparatus for fuel gas moisturization and heating. United States.
Ranasinghe, Jatila, and Smith, Raub Warfield. Tue . "Method and apparatus for fuel gas moisturization and heating". United States. https://www.osti.gov/servlets/purl/874443.
@article{osti_874443,
title = {Method and apparatus for fuel gas moisturization and heating},
author = {Ranasinghe, Jatila and Smith, Raub Warfield},
abstractNote = {Fuel gas is saturated with water heated with a heat recovery steam generator heat source. The heat source is preferably a water heating section downstream of the lower pressure evaporator to provide better temperature matching between the hot and cold heat exchange streams in that portion of the heat recovery steam generator. The increased gas mass flow due to the addition of moisture results in increased power output from the gas and steam turbines. Fuel gas saturation is followed by superheating the fuel, preferably with bottom cycle heat sources, resulting in a larger thermal efficiency gain compared to current fuel heating methods. There is a gain in power output compared to no fuel heating, even when heating the fuel to above the LP steam temperature.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

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