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Steam injection assembly for a combined cycle system

A cycle system, steam technology, applied in the field of combined cycle system, can solve the problems of reduced fuel efficiency of turbines, high nitrogen oxides, emissions, etc.

Inactive Publication Date: 2013-08-14
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with part load operation is that an increase in the ultimate load ratio of the gas turbine typically results in higher NOx emissions and a decrease in turbine fuel efficiency due to load reduction

Method used

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  • Steam injection assembly for a combined cycle system
  • Steam injection assembly for a combined cycle system
  • Steam injection assembly for a combined cycle system

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Embodiment Construction

[0013] see figure 1 , is a schematic diagram of the combined cycle system 10 shown in the figure. The combined cycle system includes a gas turbine system referenced 11 . Gas turbine system 11 includes a compressor 12 for compressing air and a combustor assembly 14 capable of receiving fuel. The fuel and compressed air are ignited to form high temperature and high pressure combustion products or gas streams that drive turbine 16 . Turbine 16 includes a plurality of rotating components or stages (not shown) that are operably connected to compressor 12 by a compressor / turbine shaft 18 (also sometimes referred to as a rotor).

[0014] During operation, air flows into compressor 12 and is compressed into a high pressure gas. The high pressure gas is supplied to the combustor assembly 14 and mixed with fuel such as process gas and / or synthetic gas (syngas). The fuel / air (or combustible mixture) is ignited to form a high-pressure, high-temperature combustion airflow with a temper...

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Abstract

A steam injection assembly for a combined cycle system (10) includes a heat recovery system (30) having at least one superheater configured to generate a steam supply (60). Also included is a gas turbine system (11) having an inlet and a compressor (12), wherein the inlet receives an air supply (102) and the steam supply (60) for combined injection into the compressor (12).

Description

technical field [0001] The present invention relates to combined cycle systems, and more particularly to the generation and injection of steam in such systems. Background technique [0002] Because gas turbine systems are mostly baseload generating, electrical load demand is expected to fluctuate widely, with the result that most gas turbine plants are forced to operate at part load during off-peak hours. The problem with part load operation is that an increase in the ultimate load ratio of the gas turbine typically results in higher NOx emissions and a decrease in turbine fuel efficiency due to load reduction. Contents of the invention [0003] According to one aspect of the invention, a steam injection assembly for a combined cycle system includes a heat recovery system having at least one superheater configured to generate feed steam. The steam injection assembly also includes a gas turbine system having an inlet and a compressor, wherein the inlet receives supply air ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C6/00
CPCY02E20/16F01K23/10F01K17/06
Inventor 章建民金基亨B.A.基佩尔张华
Owner GENERAL ELECTRIC CO