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Low NOx emission combustor

A technology of burners and combustion chambers, applied in the direction of burners, gas fuel burners, combustion methods, etc., can solve the problems of shortening heating time, achieve the effects of shortening heating time, shortening uniform temperature time, and strengthening convective heat transfer

Pending Publication Date: 2019-03-19
中冶京诚(扬州)冶金科技产业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the flue gas emission velocity of the high-speed burner in the domestic prior art is a high subsonic speed (200-300m / s), and the high-speed burner that can exceed this speed and reach supersonic speed is rarely used, and the present invention provides a The solution that the high-temperature flue gas ejection speed can reach supersonic speed (above 340m / s), provides higher heat exchange efficiency than existing products, shortens the heating time, and realizes flameless combustion in the combustion chamber

Method used

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Embodiment Construction

[0022] The present invention will be further illustrated below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0023] like figure 1 , figure 2 and image 3 As shown, a low NOx emission burner includes a combustion chamber 1, the front end of the combustion chamber 1 is provided with a gas inlet 3 through a gas channel 2, and the rear end of the combustion chamber 1 is provided with a flue gas nozzle 4, and the The outside of the gas channel 2 is provided with an air channel 6 with an air inlet 5, the air channel 5 communicates with the combustion chamber 1 through the provided air nozzle 7; the rear end of the gas channel 2 passes through a support rod 8 An air guide cone 9 is installed, the ...

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Abstract

The invention discloses a low NOx emission combustor. The low NOx emission combustor comprises a combustion chamber; the front end of the combustion chamber is provided with a fuel gas inlet through afuel gas channel, a flue gas nozzle is arranged at the rear end of the combustion chamber, an air channel with an air inlet is formed in the outer side of the fuel gas channel, and the air channel isin communication with the combustion chamber through air nozzles arranged in the air channel; and the rear end of the fuel gas channel is provided with a gas guide cone through a supporting rod. Thedevice is simple and compact in structure, small in occupied space and easy to install and maintain, the volume of the combustion chamber is smaller than that of a heating furnace hearth of a common combustor, and the volume heat strength is large and can reach 6*10<8> kJ / m3.h; the width of the adjusting range can reach 1:50, while the common combustor is only 1:10, and automatic regulation and control are easy; and in addition, the air can be preheated by high-temperature, high combustion temperature can be obtained with low-heating-value fuel gas, the combustion temperature of the combustionchamber is high and close to 2000 DEG C, and therefore the combustor can be applied to most industrial furnaces.

Description

technical field [0001] The invention relates to the technical field of industrial burners, in particular to a low NOx emission burner. Background technique [0002] High velocity burners are mainly used in industrial furnaces. Ordinary industrial furnaces have a spacious furnace for heating materials and ensuring complete combustion of fuel. In this way, it takes a long time to heat the furnace to the operating temperature when the furnace is turned on, and when the furnace is stopped, due to the large thermal inertia, there is still a considerable period of time to continue heating the workpiece, making it difficult to control the heating temperature and easily causing overheating of the workpiece. In order to prevent the workpiece from overheating, ordinary heating furnaces have to operate at a temperature slightly higher than the allowable maximum heating temperature of the workpiece, which reduces the heating speed and increases the heating time, especially when the wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/24F23D14/46F23D14/58F23D14/70
CPCF23D14/24F23D14/46F23D14/583F23D14/70Y02E20/34
Inventor 侯煜董杰蒋乃富周劲松
Owner 中冶京诚(扬州)冶金科技产业有限公司
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