Spiral flow up jet premix and preheat burner with circuit and porous regenerator

Abstract

The invention relates to a spiral flow up jet premix and preheat burner with a circuit and a porous regenerator, which can effectively solve the problems of complex ceramic burner structure, uneven burning airflow distribution, poor controllability and stable high hot air temperature realization. The burner comprises a cylindrical wall, an arch roof of hemispheric or inverse catenary spinning structure and a burning chamber, wherein the cylindrical wall and the arch roof form a spherical head cylindrical lower opening; the airflow can spin and burn in the burning chamber structure; an airflow premixing circuit is annularly arranged on the inner wall of the cylindrical wall, is provided with an opening on the upper part and has rectangular section; a gas inlet tube and an air inlet tube which are symmetrically arranged are connected with the airflow premixing circuit through rotary cutting; and the porous regenerator is filled in the burning chamber structure. The burner is simple in structure, unique and good in using effect and can effectively reduce the excess air coefficient, improve the burning temperature and burning intensity and further greatly simplify the burner structure and lighten the burner weight by realizing rapid premixing, preheating and burning in limited space by utilizing the porous material characteristics.

Description

1. Technical field [0001] The invention relates to a gas fuel combustion device, in particular to a circular swirling flow upper-spray porous regenerator premixed and preheated combustion used as a burner in industrial heating hot blast stoves and industrial kilns. 2. Background technology [0002] At present, in various gas burners burning low calorific value gas (such as blast furnace gas and producer gas), there are sleeves or rectangular diffusion combustion structures in which the concentrated gas injection and multi-stream jets around the air are cut in, and the gas and air are stratified. Injection mixed combustion structure, gas and air staggered injection mixed combustion structure, internal premixed injection combustion structure in which gas and air are pre-mixed, and the newly developed burner structure in which gas and air staggered upward injection mixed combustion airflow turns back, etc. In short, the burners of industrial furnaces have completed the transiti...

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the existing technology, the purpose of the present invention is to provide a premixed preheating combustion of the porous regenerator sprayed on the circular swirl flow, which can effectively solve the complex structure of the ceramic burner, uneven distribution of combustion airflow, The controllability is poor, so as to realize the effective combination of high-intensity combustion and uniform and efficient heat transfer-heat storage, and realize the problem of stable high hot air temperature when the combustion temperature is not high. The technical solution is to include the cylindrical wall , vault and combustion chamber, the burner consists of a cylindrical wall, a hemispherical or inverted catenary-shaped vault that together form a cylindrical lower opening of the spherical dome, allowing the airflow to rotate and burn in the combustion chamber structure, On the inner wall of the cylindrical wall, the air flow primary mixing ring with the upper opening and the rectangular section is arranged in a ring shape, and there are symmetrically arranged gas inlet pipes and air inlet pipes connected to the rotary cut. The porous heat storage body is filled in the combustion chamber structure. The heat body is piled with refractory balls, checker bricks with different apertures, or honeycomb ceramic structure. The choice of porous heat storage body is determined according to the size and use of the burner

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