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Method of operating a gas turbine with staged and/or sequential combustion

A gas turbine, turbine technology, applied in combustion methods, continuous combustion chambers, gas turbine devices, etc., can solve problems such as minimum fuel flow increase, and achieve the effect of low fuel consumption

Active Publication Date: 2015-10-14
ANSALDO ENERGIA IP UK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lowest load at which the second burner comes into operation and the least fuel flow into the second burner is thus significantly increased

Method used

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  • Method of operating a gas turbine with staged and/or sequential combustion
  • Method of operating a gas turbine with staged and/or sequential combustion
  • Method of operating a gas turbine with staged and/or sequential combustion

Examples

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Embodiment Construction

[0072] figure 1 A gas turbine with continuous combustion for carrying out the method according to the invention is schematically shown. It comprises a compressor 1, a first burner 4' comprising a number of burners 9 and a combustion chamber 4, a first turbine 7, a second combustion chamber 15' comprising a number of burners 9' and a combustion chamber 15, and the second turbine 12 . Typically, it comprises a generator 19 at the cold end of the gas turbine, that is to say at the compressor 1, and coupled to the shaft 18 of the gas turbine. The first combustor 4' and the second combustor 15' can be ring frame or barrel frame, while the first turbine 7 is optional.

[0073] The canister architecture includes multiple burners with subsequent canisters arranged in an annular array around the circumference of the turbine shaft, which allows independent combustion operation of the individual canisters 4, 15, and which does not cause detrimental interaction between the individual c...

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PUM

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Abstract

The invention concerns a method of operating a gas turbine with staged and / or sequential combustion, in which the burners of a second stage or a second combustor are singularly and sequentially switched on during loading and switched off during de-loading. The total fuel mass flow and the compressor inlet guide vanes are adjusted at the same time to allow controlling gas turbine operation temperatures and engine power with respect to the required CO emission target.

Description

technical field [0001] The invention relates to a method for operating a gas turbine with staged and / or continuous combustion. Furthermore, the invention relates to a gas turbine for implementing a method for operating a gas turbine with staged and / or continuous combustion. Background technique [0002] Due to the increase in power generation from non-steady renewable sources (eg, wind, solar), existing GT-based power stations are increasingly used to balance power demand and grid stability, thus requiring improved operational flexibility. This implies that GT plants typically operate at loads lower than the base load design point, ie at lower combustor inlet and firing temperatures. At certain limits, this reduces flame stability and burnout while increasing CO emission production. [0003] At the same time, exhaust limit values ​​and overall emission permits have become tighter, requiring: [0004] operating at lower emission values; [0005] Emissions are also kept lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R7/00F02C6/00F23C6/04
CPCF02C6/003F05D2270/053F23R3/346F23R2900/03341F02C9/16F02C9/48F23R3/36F02C9/22
Inventor D.特科尔恩S.伯内罗M.张A.埃罗格鲁W.耿
Owner ANSALDO ENERGIA IP UK LTD