Gas Turbine Burner for Syngas/Coke Oven Gas - Modifications to Reduce Flashback Potential

IP.com Prior Art Database Disclosure
IP.com Disclosure Number: IPCOM000158709D
Publication Date: 24-Oct-2007
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Publishing Venue

The IP.com Journal (v7n10A)

Related People

Juergen Carstens - Contact
juergen.carstens@siemens.com; phone +49-89-636-82995

Abstract

A flashback in a gas turbine burner occurs when the laminar or 'burning' velocity of a flame exceeds the velocity resulting from flow characteristics of the reactants, and the flame moves downstream towards the injector tip. This is undesirable since the injector material is not capable of withstanding the high temperatures resulting from the flame.

Copyright

SIEMENS AG 2007

Language

English (United States)

Country

United Kingdom

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1 pages / 91.8 KB

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Gas Turbine Burner for Syngas/Coke Oven Gas - Modifications to Reduce Flashback Potential

Idea: Benjamin Hinson, GB-Lincoln

A flashback in a gas turbine burner occurs when the laminar or 'burning' velocity of a flame exceeds the velocity resulting from flow characteristics of the reactants, and the flame moves downstream towards the injector tip. This is undesirable since the injector material is not capable of withstanding the high temperatures resulting from the flame.

The novel modified burner reduces both pressure delivery requirements, and the potential of flashback (see Fig. 1). In addition, the burner has thermocouples attached to the injector tip, to help warn of potential flashback. The modified burner has an increased flow area to accommodate the increased flow of lower calorific value gas fuel, reducing delivery pressure requirements. In addition, the reduced injection velocity results in reduced suction in the region of the injector tip (due to a reduction in the dynamic head pressure loss), and less air is entrained into the region. As a result, fuel air mixtures remain rich of stoichiometric, and flash back potential is reduced.

Fig. 1: Modifications in a gas turbine burner to reduce flashback potential

    Injection hole diameter Increased to
2.5mm

    Added Thermocouples

© SIEMENS AG 2007 file: 2007J19320.rtf page: 1

   Reserve Thermocoup...

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