Low-pollution combustor for various fuels

A burner, low-polluting technology, applied in combustion chambers, combustion methods, combustion equipment, etc., can solve problems such as endangering gas turbine operation safety, ablation, burner overheating, etc., to avoid unstable combustion and simplify the blowing protection system , to avoid the effect of tempering

Inactive Publication Date: 2010-05-26
SHENYANG ENGINE DESIGN RES INST CHINA AVIATION IND CORP I
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If you continue to use the original lean oil premixed combustion method, you will face a great risk of flashback. The flashback of the flame in the combustion chamber will cause overheating and ablation of the burner, which will seriously endanger the operation safety of the entire gas turbine
If the diffusion combustion method is used, although the tempering problem can be avoided, due to the high flame temperature, nitrogen oxides (NO X ) The problem of a large increase in emissions

Method used

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  • Low-pollution combustor for various fuels
  • Low-pollution combustor for various fuels
  • Low-pollution combustor for various fuels

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Embodiment Construction

[0022] A low-pollution burner suitable for multiple fuels, including a split flow system 20, an installation edge 21, and six dual-fuel nozzles 22, wherein:

[0023] The diversion system and the six dual-fuel nozzles are connected as a whole through the installation edge; the diversion system is formed by concentric pipes 28, 29, oil supply pipeline 35, baffles 30, 31, 32, 33, 34 and processed on the installation edge The cavity is composed of four diverging channels that are opposite to each other, including the gas fuel diverting channel 24, the liquid fuel diverging channel 25, the diluent diverging channel 26, and the atomizing air diverging channel 27, which are used to realize the liquid fuel supplied from the outside, Separate flows of atomizing air, diluent and gaseous fuel within the burner and split to 6 fuel nozzles, see figure 1 , figure 2 ;

[0024] The dual-fuel nozzles consist of liquid fuel nozzles and gas fuel nozzles and are distributed along the central a...

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Abstract

The invention discloses a low-pollution combustor for various fuels, which comprises a shunt system, a mounting edge and a plurality of double fuel nozzles, wherein the shunt system is connected with the plurality of double fuel nozzles through the mounting edge into a whole; the shunt system comprises a gas fuel subchannel, a liquid fuel subchannel, a diluent subchannel and an atomized air subchannel; and the double fuel nozzles are arranged circumferentially along the central line of the combustor. The low-pollution combustor for various fuels provided by the invention reduces the dischargeof pollutants such as NOX, solves the problems such as backfire and unstable combustion of premixing combustion of synthetic gases, simplifies an air cleaning and blowing protective system of a combustion chamber, avoids increasing the discharge of carbon monoxide, and can work with low and medium thermal value gas fuel such as coke oven gas, chemical tail gases and synthetic tail gases from IGCCpower plants and high thermal value gas fuel such as diesel oil and natural gas.

Description

technical field [0001] The invention relates to the technical field of gas turbine combustors, in particular to the field of gas turbine combustors applying medium and low calorific value gas fuels. Background technique [0002] Traditionally, gas turbines work with high calorific value natural gas and liquid fuels (mainly diesel, etc.). In recent years, my country's energy supply and environmental pressure have been increasing day by day, the supply of natural gas and oil has been tight, and the price has risen severely. The operating cost of gas turbines using natural gas and oil has become increasingly unbearable. my country's energy structure is dominated by coal, but the traditional coal-fired power generation process produces a large amount of pollutants, which is an important source of environmental pollution. Integrated Gasification Combined Cycle (IGCC) generates low-to-medium calorific value synthesis gas by gasifying coal. After the synthesis gas is purified, it ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/28
Inventor 金戈顾铭企齐兵王克新刘常青李孝堂高凤树尹家录聂海刚
Owner SHENYANG ENGINE DESIGN RES INST CHINA AVIATION IND CORP I
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