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Self-circulation low nitrogen oxide swirling burner

A swirl burner, low nitrogen oxide technology, applied in the field of combustion, can solve the problems of blending, affecting the efficiency and life of the boiler, and achieve the effects of promoting blending, reducing heat loss and reducing temperature

Inactive Publication Date: 2017-09-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, liquid and solid fuels with high carbon content are mostly used in industrial boilers, which makes blending and wall sticking a prominent problem, which greatly affects the efficiency and life of the boiler

Method used

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  • Self-circulation low nitrogen oxide swirling burner
  • Self-circulation low nitrogen oxide swirling burner
  • Self-circulation low nitrogen oxide swirling burner

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0024] As shown in Figure 1, a self-circulating low-NOx swirl burner disclosed in this embodiment is mainly composed of a burner body 1 and a connecting pipe 2, and the burner body 1 and the connecting pipe 2 are installed concentrically. The main body of the burner 1 plays the role of mixing, combustion and gas circulation, and the connecting pipe 2 serves as an extension of the combustion chamber. The burner body 1 is mainly composed of an inner annular sleeve and an outer annular sleeve, and an annular cavity is formed between the inner annular sleeve and the outer annular sleeve. Such as figure 2 , 3 shown. The inner annular sleeve is the swirl frame, the inner space of the inner annular sleeve is the combustion chamber, and the swirl frame is provided with six tangential inner holes for swirling the gas in the combustion chamber. Six outer holes are opened on the outer annular sleeve for allowing air to flow in from the conduit, and the diameter of the outer holes is ...

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Abstract

The invention discloses a self-circulation low nitrogen oxide swirling burner and belongs to the field of burning. The self-circulation low nitrogen oxide swirling burner comprises a burner body and a connecting pipe, wherein the burner body is of a dual-layer ring sleeve structure. A guide pipe is connected with a gas cylinder or an air compressor through a pressure relief valve. Air flows into an outer hole via the guide pipe, is sprayed into a ring cavity via the outer hole and forms a low-pressure area in the ring cavity, then an tangential jet air flow enters the cavity and generates a swirling flow by rotating along an arc wall continuously, and a uniform stable swirling flow flame is formed after ignition; and when the air flow reaches an outlet of a combustor body, the main component of the air flow is burnt fuel gas, due to the mobility characteristic of the swirling flow and the low-pressure area, part of gas at the outlet of the burner body flows back to an inlet from the ring cavity and enters the combustor body again, and operations are repeatedly conducted so that the purpose of circulation of the flue gas can be achieved. The self-circulation low nitrogen oxide swirling burner achieves the technical effects of reducing emission of harmful gas generated during burning, improving the burning efficiency of liquid fuel and solid fuel, preventing the liquid fuel and the solid fuel from adhering to walls, and prolonging the service life.

Description

technical field [0001] The invention belongs to the field of combustion, and relates to a burner, in particular to a self-circulating low-nitrogen oxide swirl burner. Background technique [0002] At present, fossil fuels are the main source of energy for social production and life. The waste gases such as greenhouse gases, sulfides, and nitrogen oxides produced by their combustion have brought environmental pollution problems and seriously affected people's daily life. How to use fossils more efficiently and environmentally friendly The development of economical and environmentally friendly energy technologies with low pollutant emissions has become the focus of increasing attention. [0003] Environmental pollution caused by burning pollutants, such as smog, climate warming, acid rain and other issues, has been plagued by all aspects of human life. Environmental research scholars from various countries are also actively researching various combustion technologies to solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D17/00
CPCF23D17/00
Inventor 石保禄马康赵晓尧彭维康王宁飞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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