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Direct-injection gas burner without flame

A flameless combustion and direct injection technology, which is applied to gas fuel burners, burners, combustion types, etc., can solve the problems of complex structure and high manufacturing cost, and achieve the effects of easy implementation, low manufacturing cost and convenient maintenance

Inactive Publication Date: 2014-04-23
PEKING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the existing flameless combustion devices mainly use preheated air, built-in stirred reactor, heat storage body or use of catalysts, etc., although the reduction of NO X The effect is good in terms of emissions, but its structure is complex and the cost of equipment manufacturing is high

Method used

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  • Direct-injection gas burner without flame
  • Direct-injection gas burner without flame
  • Direct-injection gas burner without flame

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] like Figure 1~5 As shown, the present invention includes a horizontally arranged inner gas pipe 1 and an outer gas pipe 2 coaxially sleeved outside the inner gas pipe 1 , and there is an annulus between the inner gas pipe 1 and the outer gas pipe 2 . A circular gas nozzle 3 is installed at the outlet end of the inner gas pipe 1 and the outer gas pipe 2, and a central fire hole 4 communicating with the inner gas pipe 1 is arranged in the center of the gas nozzle 3, and a plurality of rings are arranged around the central fire hole. Connected peripheral fire holes 5. Four air pipes 6 are symmetrically arranged around the outer gas pipe 2 (this is only an example, not limited to this), and an air nozzle 7 is respectively installed at the outlet end of each air pipe 6, and each air nozzle 7 is connected to the gas The outer end faces of the nozz...

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Abstract

The invention relates to a direct-injection gas burner without flame. The burner comprises an inner gas pipe which is arranged horizontally, an outer gas pipe which is sleeved at the outer part of the inner gas pipe in a coaxial way, gas nozzles which are arranged at the outlet ends of the inner gas pipe and the outer gas pipe, a plurality of air pipes which are arranged at the periphery of the outer gas pipe, a plurality of air nozzles which are respectively arranged at the outlet end of each of the air pipes, and an igniting needle which is arranged on one side of the outer gas pipe in parallel, wherein an annular hollow is formed between the inner gas pipe and the outer gas pipe, a center fire hole which is communicated with the inner gas pipe is formed in the center of the gas nozzle, the periphery of the center fire hole is provided with a plurality of peripheral fire holes which are communicated with the center fire hole, and the tail part of the igniting needle is close to the gas nozzle. The burner is in a simple structure and does not need preheating of the air. A stirring reactor and a heat accumulator are arranged in the burner, and therefore the flameless burning in a furnace can be realized.

Description

technical field [0001] The invention relates to a combustion device, in particular to a direct-injection gas flameless burner. Background technique [0002] About 80% of the world's energy comes from the combustion process of fossil fuels. It is well known that the combustion of fossil fuels will produce a large amount of pollutants, such as nitrogen oxides (NO X ), sulfur oxides (SO X ), dust particles and carbon dioxide (CO 2 )Wait. Among them, NO X and SO X is the main culprit of acid rain. In addition, NO X Under certain conditions, it will also produce photochemical smog pollution with other pollutants, which poses a huge threat to the human living environment. Therefore, developing low NO X Combustion technology has become a key research issue in academic circles at home and abroad. Low NO X Combustion technologies mainly include fuel-lean premixed staged combustion (rich state-quick cooling-lean combustion), catalytic combustion, flameless or low-oxygen dil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/22F23D14/46
CPCY02E20/34
Inventor 米建春王飞飞梅振锋
Owner PEKING UNIV
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