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A high-efficiency heat transfer with low no x exhaust burner

A burner, high-efficiency technology, applied in the direction of burner, gas fuel burner, combustion type, etc., can solve the problem of high NOx emissions, achieve the effect of reducing NOx emissions, reducing NOx, and ensuring smoke exhaust efficiency

Active Publication Date: 2022-01-04
北京兴达奇热工控制设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: the flue gas generated by combustion is directly discharged from the flue gas outlet to the outside, resulting in still high NOx emissions

Method used

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  • A high-efficiency heat transfer with low no <sub>x</sub> exhaust burner
  • A high-efficiency heat transfer with low no <sub>x</sub> exhaust burner
  • A high-efficiency heat transfer with low no <sub>x</sub> exhaust burner

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] refer to figure 1 , a high-efficiency heat exchange low NOx emission burner includes a shell 1 , a gas guide pipe 2 , a gas element 3 and a gas pipe 4 . The gas element 3 may be a device capable of providing conditions for combustion such as a combustion chamber, and the gas element 3 is used for mixing air and gas and burning the mixture of air and gas.

[0045] In the first embodiment, the housing 1 is generally arranged in an "L" shape, and the gas guide pipe 2 is generally arranged in an "L" shape suitable for the housing 1 . The casing 1 is sheathed on the outside of the gas guide pipe 2 .

[0046] The casing 1 has a gas flow space for gas flow, and the gas flow space is divided into a gas flow channel 41 , an intake flow channel 11 and a smoke exhaust flow channel 12 which are isolated from each other. The gas flow passage 41 has a gas inlet end and a gas outlet end, and the gas outlet end of the gas flow passage 41 is connected to the gas element 3 so that the ...

Embodiment 2

[0052] refer to figure 2 , the first difference between the second embodiment and the first embodiment mainly lies in that the positions of the air intake flow channel 11 and the smoke exhaust flow channel 12 are exchanged.

[0053] In the second embodiment, the housing 1 is generally arranged in an "L" shape, and the gas guide pipe 2 is generally arranged in an "L" shape that matches the housing 1 .

[0054] The difference is that the casing 1 includes a first shell part 15 and a second shell part 16 fixedly arranged on the first shell part 15 . The gas element 3 is located at an end of the second casing 1 away from the first casing part 15 . The smoke exhaust port 14 is located on the end face of the first shell portion 15 away from the second shell portion 16, the air inlet 13 is located on the outer wall of the first shell portion 15 away from the end of the second shell portion 16, and the air inlet 13 is in the vertical direction It is close to the gas element 3 relat...

Embodiment 3

[0062] refer to image 3 The difference between the third embodiment and the second embodiment lies in the position of the outlet end of the air inlet nozzle 131 .

[0063] In the third embodiment, the gas outlet end of the air inlet nozzle 131 passes through the side wall of the gas guide pipe 2 , so that the gas outlet end of the air inlet nozzle 131 is located in the first smoke exhaust chamber 121 . The gas injected by the air intake nozzle 131 directly enters the first smoke exhaust chamber 121 , and passes through the smoke return flow channel on the side away from the air inlet 13 to enter the first air intake chamber 111 .

[0064] Correspondingly, in the third embodiment, the number of the smoke return pipe section 211 is one, that is, the number of the smoke return channel 21 is one. At this time, the gas ejected from the intake nozzle 131 directly enters the first smoke exhaust chamber 131 and enters the only smoke return pipe section 211, and the gas can take away...

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Abstract

The present application relates to a high-efficiency heat exchange and low NOx emission burner, and relates to the technical field of the burner, which includes a casing and a gas guide pipe, and the casing has mutually isolated inlet flow passages and smoke exhaust flow passages. A flue gas return flow channel is provided on the gas guide pipe, and a smoke return flow channel is provided on the gas guide pipe near the air inlet, and the smoke return flow channel is connected with the intake flow channel and the smoke exhaust flow channel. Due to the rapid flow of air in the intake flow channel, the end of the flue gas return flow channel connected to the intake flow channel generates a negative pressure relative to the end of the smoke return flow channel close to the smoke exhaust flow channel, so that the smoke in the smoke exhaust flow channel passes through the smoke. The gas recirculation channel flows back into the intake channel to reduce the NOx discharged from the exhaust port, and the smoke entering the intake channel is mixed with air to dilute the concentration of oxygen and nitrogen in the air, so as to achieve oxygen-lean combustion and achieve reduced combustion The purpose of generating NOx.

Description

technical field [0001] The present application relates to the technical field of burners, in particular to a burner with high-efficiency heat exchange and low NOx emission. Background technique [0002] NOx, which is a collection of various nitrogen oxides, is an important factor that causes acid rain and smog. With the improvement of the country's requirements for energy conservation and environmental protection, the continuous development of energy conservation and environmental protection technologies, the continuous in-depth control of atmospheric environmental pollution, and the increasingly stringent requirements for NOx emissions of various burners. Therefore, the combustion performance requirements of the burner have also been raised from the simple requirements of combustion efficiency and energy consumption to the combustion efficiency and index energy consumption under the requirements of low nitrogen environmental protection. The burner is capable of mixing and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/22F23D14/46F23J15/06
CPCF23D14/22F23D14/46F23J15/06Y02E20/30
Inventor 黄显模
Owner 北京兴达奇热工控制设备有限公司
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