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Gas turbine multiple nozzle dilution, diffusion and combustion system for synthesis gas

A diffusion combustion and gas turbine technology, applied in the combustion chamber, combustion method, combustion equipment, etc., can solve the problems of tempering thermoacoustics, large combustion noise, oscillation, etc., and achieve the effect of stable combustion and low emission of pollutants

Active Publication Date: 2008-04-30
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, traditional gas turbine combustors are mainly divided into lean premixed combustion and diffusion combustion, but the current two methods are not suitable for syngas combustion
Due to the characteristics of syngas (containing hydrogen and more carbon monoxide), if the lean premixed combustion method is used, problems such as combustion instability, flashback and thermoacoustic oscillation will occur; The use of diffusion combustion will produce a large amount of NO x , and high hydrogen content will lead to loud combustion noise

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  • Gas turbine multiple nozzle dilution, diffusion and combustion system for synthesis gas
  • Gas turbine multiple nozzle dilution, diffusion and combustion system for synthesis gas
  • Gas turbine multiple nozzle dilution, diffusion and combustion system for synthesis gas

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Embodiment Construction

[0019] In order to solve the problem of combustion chamber noise, the present invention adopts a multi-fuel nozzle combustion system, which has the advantage of not only significantly reducing the noise of the combustion chamber, but also reducing the wear and tear of the combustion chamber and reducing operating costs. According to the arrangement of nozzles, the multi-nozzle form is selected as one liquid fuel spray combustion nozzle in the middle and five syngas nozzles in the circumferential direction. Such nozzle arrangement can not only utilize the area of ​​the end cover of the flame tube to the greatest extent, but also avoid the mutual interference between the flames of the nozzles to the greatest extent.

[0020] In view of the great difficulty in combusting the hydrogen-rich synthesis gas in the lean premixed combustor, the present invention adopts the diffusion combustion method. Due to the high adiabatic flame temperature of the syngas, the NO x Emissions are hig...

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Abstract

The invention is a multi-nozzle dilution and diffusion combustion system suitable for syngas with low pollutant discharge and low noise. The arrangement of one liquid fuel spray combustion nozzle and five syngas nozzles with the same rotation direction can carry out dilution diffusion combustion. The fuel swirler and the air swirler are respectively in the form of tangential holes and vane-type radial swirlers, and the direction of rotation between them is opposite. The blade adopts two special structures of slotted back and tangential hole.

Description

technical field [0001] The invention relates to the technical field of gas turbine combustors, in particular to the field of gas turbine combustors using syngas as fuel. Background technique [0002] With the rapid development of my country's economy, the pressure on energy and environment is becoming increasingly urgent. The relatively limited reserves of oil and natural gas and the relative abundance of coal resources determine my country's coal-based energy structure. However, coal is prone to produce a large amount of pollutants in the process of traditional power generation and utilization, and is the main source of environmental pollution in my country. Among them, IGCC opens up a new way for the clean utilization of coal and a clean and efficient power generation system. IGCC first converts coal gas into syngas, and after purification, the syngas is passed into the combustor of the gas turbine for combustion, and then drives the turbine to generate power. However, t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/14F23R3/38
Inventor 肖云汉张哲巅穆克进王岳
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI