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Rotary detonation combustion chamber suitable for hydrogen-doped combustion of natural gas

A combustion chamber and natural gas technology, applied in combustion chambers, continuous combustion chambers, combustion methods, etc., can solve problems such as increased emissions, high hydrogen reactivity, poor RDC working stability, etc., to achieve reduced emissions, high reactivity, Promotes fast and even mixing effects

Active Publication Date: 2022-01-28
HUANENG POWER INTERNATIONAL +1
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Problems solved by technology

[0003]Existing public studies have shown that due to the lower reactivity of natural gas than hydrogen, the RDC’s working stability is poor when natural gas is used as fuel; hydrogen is used as fuel Under certain conditions, the stable operation of the RDC can be achieved, but due to the high reactivity of hydrogen, the corresponding NOX emissions from the combustion chamber will also increase

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  • Rotary detonation combustion chamber suitable for hydrogen-doped combustion of natural gas
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  • Rotary detonation combustion chamber suitable for hydrogen-doped combustion of natural gas

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[0028] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

[0029] refer to figure 1 and figure 2 As shown, the invention provides a rotating detonation combustor for combustion of natural gas mixed with hydrogen, which is composed of an RDC combustion chamber annular chamber 8 , a swirler nozzle 3 , a natural gas supply annular chamber 7 and a hydrogen supply chamber 12 . The ring cavity...

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Abstract

The invention discloses a rotary detonation combustion chamber suitable for hydrogen-doped natural gas combustion. The rotary detonation combustion chamber is mainly composed of an RDC combustion chamber annular cavity, an air supply cavity, a cyclone nozzle, a natural gas supply annular cavity and a hydrogen supply cavity. By means of the mode that the hydrogen is mixed in the mixture of the natural gas and the air, the emission amount of carbon dioxide in the combustion chamber can be reduced. Due to the fact that the reaction activity of hydrogen is high, stable propagation of rotating detonation waves is facilitated; besides, by designing a plurality of injection holes and a swirler nozzle structure, the fuel and the oxidant can be quickly and uniformly mixed, and the emission of NOX is ensured to be within a reasonable range. Under the condition that the structural complexity of the combustion chamber is not obviously increased, the working stability of the combustion chamber can be guaranteed, the emission of carbon dioxide is effectively reduced, and the design target of energy conservation and carbon reduction is achieved.

Description

technical field [0001] The invention belongs to the technical field of rotary detonation combustion chambers, and in particular relates to a rotary detonation combustion chamber suitable for combustion of natural gas mixed with hydrogen. Background technique [0002] There are two types of combustion in nature, slow combustion and detonation combustion. The combustion methods of the existing aero-engines and gas turbines all adopt the slow-burn combustion method based on the isobaric cycle, and the technical level tends to be mature, and it is difficult to achieve a major technological breakthrough. Compared with isobaric combustion, detonation combustion theoretically has the characteristics of high heat cycle efficiency and fast heat release rate. Based on the above advantages, researchers at home and abroad try to apply detonation combustion to existing power plants, and propose a rotating detonation combustor (Rotating Detonation Combustor, referred to as RDC), which ha...

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Application Information

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IPC IPC(8): F23R3/28F23R3/52
CPCF23R3/286F23R3/52
Inventor 肖俊峰王致程王玮李晓丰王峰胡孟起高松
Owner HUANENG POWER INTERNATIONAL