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Porous metal-ceramic medium gas fuel burner

A technology of ceramic media and porous metal, applied in gas fuel burners, burners, combustion methods, etc.

Inactive Publication Date: 2006-08-23
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0004] Aiming at the deficiencies of the existing high calorific value gas fuel porous media burner, the present invention provides a porous metal-ceramic media gas fuel burner

Method used

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Embodiment Construction

[0023] Such as figure 1 , figure 2 As shown, the burner body consists of 1 refractory sleeve, 2 large-pore area ceramic porous media, 3 small-pore area metal porous media, 4 burner shell, 5 dust removal metal mesh or metal brush, 6 gas pipeline, 7 premixing chamber , 8 air ducts, in the cavity formed by the burner shell 4 and the refractory sleeve 1, from top to bottom, the ceramic porous medium 2 in the large pore area 2, the metal porous medium 3 in the small pore area, and the ceramic porous medium in the large pore area are arranged from top to bottom. The material of the porous medium 2 can be yttria-based zirconia or silicon nitride (when the combustion temperature does not exceed 1500°C), and the small-porous metal material in the preheating zone can be stainless steel. The top of the small porous medium 3 in the preheating zone is flush with the top of the burner shell 4, the lower surface of the ceramic porous medium 2 in the large pore area is in contact with the upper ...

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Abstract

The porous metal-ceramic medium gas fuel burner consists of casing of refractory material, macroporous ceramic medium, small porous metal medium, burner casing, dedusting metal net or brush, furl gas pipeline, pre-mixing chamber and air pipeline. Inside the burner, there are macroporous ceramic medium of yttrium oxide based zirconium oxide in the upper part, small porous metal medium of stainless steel in the lower part, refractory material coated burning casing, dedusting metal net or brush set below the small porous metal medium. The burner of the present invention can burn fuel gas with heat value from 1000 kcal / cu m to 4000 kcal / cu m, such as blast furnace gas, coke furnace gas, mixed blast furnace gas and coke furnace gas and natural gas, and may be applied widely in metallurgical, chemical and other industry.

Description

Technical field [0001] The invention relates to a burner, in particular to a porous metal-ceramic medium gas fuel burner. Background technique [0002] At present, the combustion of gaseous fuels in industrial production in my country is mainly spatial combustion characterized by free flames. In this combustion method, the temperature gradient near the flame surface is steep and uneven, and the presence of local high temperature areas causes a large amount of NO x Generated, the combustion is incomplete, the thermal efficiency is low, and the combustion stability is poor. Now, the technology of adding porous media to the burner has gradually been paid attention to. Premixed combustion in porous media has many advantages: smaller lean burn limit, higher combustion rate and stability, wide load adjustment range, high combustion intensity, small burner volume, etc., and the combustion products contain nitrides and sulfides The content of pollutants such as substances is very small. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/02
Inventor 李本文刘慧赵玉荣陈海耿赫冀成
Owner NORTHEASTERN UNIV
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