Fuel gas decoupling combustor and using method thereof

Abstract

The invention relates to a fuel gas decoupling combustor and a using method thereof. The fuel gas decoupling combustor adopts a partition staged combustion mode of central and peripheral oxygen deficit and central area lean combustion, diffusion type oxygen-deficient combustion with high combustion stabilizing capacity and low heat intensity is adopted in the central combustion area, reliable ignition and low-load stable combustion of the oxygen-deficient combustion area are ensured, the peripheral oxygen-deficient combustion area controls temperature distribution of a combustion chamber by accurately controlling partition mixing of fuel gas and air, the radiation heat transfer capacity is improved, and mixed burnout of the peripheral fuel gas and the main combustion area is promoted. In aword, the problem that the combustion temperature of a diffusion combustion mode is too high in the central stage is effectively solved by the fuel gas decoupling combustor and the using method thereof, the combustion chamber is more uniform in heat intensity, high in flame fullness, high in heat transfer capacity and long in smoke retention time, the combustion efficiency is guaranteed under thecondition of low fan power consumption, meanwhile, generation of thermal NOX is reduced, and decoupling combustion of the fuel gas is achieved.

Description

technical field

[0001] The invention belongs to the technical field of combustion, and relates to a burner, in particular to a gas decoupling burner and a use method thereof. Background technique

[0002] High calorific value gas has the characteristics of rapid combustion and high theoretical combustion temperature, but it is easy to generate thermal NO in the combustion process. X , for the traditional diffusion combustion method, due to the poor uniformity of air-fuel mixing and combustion, it is easy to cause a wide distribution of flame high-temperature areas and a high peak temperature of flame combustion. X Very unfavorable.

[0003] Premixed combustion can significantly improve the uniformity of combustion, but the combustion stability and safety are reduced. Surface combustion technology is the most widely used fully premixed combustion method at present. Through dense hole network and narrowing the outlet aperture of the mixed gas to the limit tempering However, ...

Images