Flameless combustion organizational structure and flameless combustion chamber for realizing structure

A technology of flameless combustion and organizational structure, applied in combustion chambers, continuous combustion chambers, combustion methods, etc., can solve the problems of limited life and high price of catalysts and effective reaction surfaces, avoid thermoacoustic oscillation problems, and achieve flameless Combustion, high stability effect

Inactive Publication Date: 2010-01-13
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

The main disadvantages of this approach are the limited lifetime of catalys

Method used

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  • Flameless combustion organizational structure and flameless combustion chamber for realizing structure
  • Flameless combustion organizational structure and flameless combustion chamber for realizing structure
  • Flameless combustion organizational structure and flameless combustion chamber for realizing structure

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Embodiment Construction

[0048] First, the flameless combustion will be introduced in detail.

[0049] Flameless combustion is a combustion technology that emerged in the 1990s and produces invisible flames under the conditions of high temperature, low oxygen concentration, and low fuel-to-air equivalent ratio. This technology uses a large amount of refluxing high-temperature flue gas to mix with fresh air. On the one hand, it is necessary to increase the temperature of the air to exceed the self-ignition temperature of the fuel, and on the other hand to achieve the purpose of diluting the oxidant and reducing the oxygen concentration. The diluted high-temperature air causes the fuel to ignite spontaneously when it encounters the fuel. Since the combustion reaction occurs simultaneously within a certain space at this time, a highly dispersed reaction zone is formed, and there is no obvious flame front like diffusion combustion or premixed combustion. Although the temperature of the air mixed with the fl...

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PUM

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Abstract

The invention discloses a flameless combustion organizational structure used in a combustion chamber of a gas turbine. In the structure, a plurality of coaxial ejector nozzles are evenly arranged at one end of the cylinder-shaped combustion chamber in a ring shape; the center of the ejector nozzles evenly arranged in the ring shape is provided with a cylinder-shaped reflux structure; secondary air does not take part in combustion in the cylinder-shaped combustion chamber; the air taking part in the reaction enters from one end provided with the ejector nozzles arranged on the cylinder-shaped combustion chamber, and a large amount of reflux high-temperature fume is mixed with the fresh air according to the position relationship between the nozzle evenly arranged in the ring shape and the cylinder-shaped reflux structure arranged in the center of the nozzles, so that the air temperature is increased, and the air is diluted; and the diluted high-temperature air spontaneously combusts when exposed to the fuel to form a high-temperature dispersing reaction area, so that the flameless combustion is achieved in the combustion chamber of the gas turbine. The invention simultaneously discloses the flameless combustion chamber for realizing the flameless combustion organizational structure. The flameless combustion organizational structure and the flameless combustion chamber realize flameless combustion and achieve the aims of extremely low pollutant emission and stable combustion of the combustion chamber of the gas turbine.

Description

Technical field [0001] The present invention relates to the technical field of gas turbines, in particular to a flameless combustion organization structure applied to a combustion chamber of a gas turbine, and a flameless combustion chamber for realizing the flameless combustion organization structure. Background technique [0002] At present, my country's coal-based energy structure is facing increasing international pressure on environmental protection issues, and there is an urgent need for breakthroughs and innovations in clean coal technology. High-efficiency heat-to-power conversion processes such as integrated coal gasification combined cycle (IGCC), coal co-production systems, and coal-to-hydrogen power generation systems with advanced gas turbines as the core are due to efficiency, economic competitiveness, pollutant emission control, especially in CO 2 The huge development potential in many aspects such as emission reduction is an important part of mainstream power gener...

Claims

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Application Information

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IPC IPC(8): F23R3/28F23R3/10
CPCY02E20/34
Inventor 徐纲吕煊崔玉峰聂超群
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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