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Rotational flow flue gas recirculation gas burner

A gas burner and flue gas recirculation technology, which is applied to gas fuel burners, burners, combustion methods, etc., can solve the problems of low flame temperature and low calorific value

Pending Publication Date: 2021-09-17
清华大学山西清洁能源研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low calorific value and low flame temperature of these low calorific value gases, greater stability problems arise during low nitrogen combustion

Method used

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  • Rotational flow flue gas recirculation gas burner
  • Rotational flow flue gas recirculation gas burner
  • Rotational flow flue gas recirculation gas burner

Examples

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Embodiment Construction

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0034]In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Rear", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Axial", "Radial", "Circumferential" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the des...

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PUM

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Abstract

The invention discloses a rotational flow flue gas recirculation gas burner which comprises a nozzle, a gas gun center pipe, a gas spray gun, an outer flue gas injection unit, an inner flue gas injection unit, an ignition gun assembly and rotational flow blades. The outer flue gas injection unit comprises an outer flue gas inlet and a baffling wall, and an outer flue gas circulating chamber is formed among the outer flue gas inlet, the baffling wall, the outer wall of the fuel gas spray gun and the inner wall of the nozzle. The inner flue gas injection unit comprises an annular baffling wall and an annular plate, and an inner flue gas circulation cavity is formed among the annular baffling wall, the annular plate, the inner wall of the gas spray gun and the outer wall of the gas gun center pipe. On the premise of ensuring stable combustion, the emission of nitrogen oxides is less than 30mg / Nm<3>, so that the increasingly stringent environmental protection standard is met.

Description

technical field [0001] The invention relates to the technical field of combustion, in particular, the invention relates to a swirling flue gas recirculation gas burner. Background technique [0002] A gas fuel burner is a device that burns gas fuel and provides heat or hot flue gas. It is widely used in combustion equipment such as gas boilers and hot blast stoves. Gas fuels, such as natural gas, coal gas, analytical gas, pyrolysis gas, etc., the main pollutants after combustion are nitrogen oxides and sulfur dioxide. The formation of sulfur dioxide is mainly determined by the sulfur content in the fuel, while the formation of nitrogen oxides is closely related to the design of the burner. In recent years, my country's environmental protection requirements for combustion equipment have become more and more stringent. Taking gas-fired boilers as an example, Beijing promulgated the "Emission Standard of Air Pollutants for Boilers" (DB11 / 139-2015), requiring new boilers to emi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/02F23D14/46F23D14/48F23D14/62F23C9/06
CPCF23D14/02F23D14/46F23D14/48F23D14/62F23C9/06
Inventor 张杨鑫王志宁张扬蔡晋刘旋坤冯娜娜王雨果
Owner 清华大学山西清洁能源研究院
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