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Micro-premixing combustion chamber used for natural gas turbine and applied to wet air circulation

A technology for gas turbines and combustion chambers, applied in combustion chambers, continuous combustion chambers, combustion methods, etc., to achieve the effects of reducing nitrogen oxide emissions, improving mixing uniformity, and improving ignition and flame transfer performance

Pending Publication Date: 2020-10-13
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

These properties challenge the development of wide-load stable low-emission combustion technologies and burners with moist air circulation

Method used

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  • Micro-premixing combustion chamber used for natural gas turbine and applied to wet air circulation
  • Micro-premixing combustion chamber used for natural gas turbine and applied to wet air circulation
  • Micro-premixing combustion chamber used for natural gas turbine and applied to wet air circulation

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Embodiment Construction

[0071] The present disclosure provides a micro-premix combustor of a natural gas gas turbine applied to wet air circulation, so as to alleviate the low expandability of the nozzle of the burner unit in the prior art, the uneven mixing of fuel and air, and flashback, spontaneous combustion and heat during operation. Acoustic vibration and other problems, while also alleviating the problem of high nitrogen oxide emissions.

[0072] The present disclosure provides a natural gas gas turbine micro-premix combustion chamber applied to wet air circulation. The micro-premix combustion chamber includes: a burner body, which is arranged at the head of the combustion chamber, and is divided into a main nozzle area and a central duty nozzle area; The inlet is set at the bottom of the burner, and the air comes from the outlet of the upstream compressor; the air chamber, wrapped by the gas turbine casing, communicates with the gap channel formed by the combustion chamber liner and the flame ...

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Abstract

The invention discloses a micro-premixing combustion chamber used for a natural gas turbine and applied to wet air circulation. The micro-premixing combustion chamber used for the natural gas turbineand applied to wet air circulation comprises a combustor main body, a flame tube and a combustion chamber cartridge, wherein the combustor main body is arranged on the head part of the combustion chamber; the flame tube is arranged in the combustion chamber cartridge, and is a cylindrical wall surface wrapping the combustion chamber, and the inner side of the wall surface is a combustion area of the combustion chamber; a main fuel inlet and an on-duty fuel inlet are formed in the front end of the combustor main body, and the main fuel inlet is used for inputting a fuel into a main nozzle of acombustor; the on-duty fuel inlet is used for inputting the fuel into an on-duty nozzle of the combustor; and an air chamber is formed in the bottom of the combustion chamber, the air chamber is wrapped with a gas turbine cartridge, communicates to a gap which is formed by a lining of the combustion chamber and the flame tube, and feeds air which comes from an upstream air compressor outlet into an air bin of the combustor through the gap.

Description

technical field [0001] The disclosure relates to the technical field of gas turbine combustors, in particular to a micro-premixed combustor for natural gas gas turbines applied to wet air circulation. Background technique [0002] With the continuous development of gas turbine technology, the ever-changing energy structure and the continuous improvement of environmental protection requirements, gas turbines will develop in the direction of safety, efficiency, cleanliness and flexibility. At present, the gas turbines for power generation mainly adopt the Braden-Rankine combined cycle, and the cycle performance can be improved by continuously increasing the total pressure ratio and the front temperature of the turbine, but its potential is gradually limited due to the influence of materials. Therefore, the development of a new type of thermodynamic cycle based on gas turbines has become a One option, of which the humidified gas turbine cycle is one of the representatives. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/28
CPCF23R3/286
Inventor 邵卫卫刘策刘勋伟张哲巅肖云汉
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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