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Mass flow heavy oil pulverization spray gun suitable for burning of low nitric oxides (NOx)

A technology of atomizing spray gun and large flow rate, which is applied in the direction of burners, lighting and heating equipment, etc. It can solve the problem of incomplete combustion of heavy oil, achieve the effect of reducing NOx emission, reducing NOx emission and good sealing effect

Active Publication Date: 2015-06-17
NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem of incomplete combustion of heavy oil in existing intermediate mixing nozzles, the present invention provides a large-flow heavy oil atomization spray gun suitable for low NOx combustion. The quality of atomization greatly reduces the amount of NOx generated during combustion and improves the burnout rate of heavy oil

Method used

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  • Mass flow heavy oil pulverization spray gun suitable for burning of low nitric oxides (NOx)
  • Mass flow heavy oil pulverization spray gun suitable for burning of low nitric oxides (NOx)
  • Mass flow heavy oil pulverization spray gun suitable for burning of low nitric oxides (NOx)

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0030] figure 1 It is a structural schematic diagram of a large flow heavy oil atomizing spray gun suitable for low NOx combustion, including the gun body assembly and nozzle assembly,

[0031] The gun body assembly includes an inner sleeve 3, an air interface 1 communicating with the inner sleeve 3, an outer sleeve 4, a liquid interface 2, and a rectifier 5. One end of the inner sleeve 3 and the outer sleeve 4 is fixedly connected by a plug 14, and the inner sleeve 3 is fixedly connected to the outer sleeve 4. A steam channel 15 is formed in the casing, a heavy oil flow channel 13 is formed between the inner casing 3, the outer casing 4 and the plug 14, the liquid circuit interface 2 communicates with the heavy oil flow channel 13 through the outer casing 4, and the inner casing 3 and the outer casing 4 The other end of the rectifier is connec...

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Abstract

The invention relates to a mass flow heavy oil pulverization spray gun suitable for burning of low nitric oxides (NOx). The mass flow heavy oil pulverization spray gun suitable for burning of the low NOx comprises a gun body assembly and a nozzle assembly, wherein the nozzle assembly comprises a spray nozzle and a plurality of mixed elements arranged on the spray nozzle, the mixed elements comprise an air hole, an oil hole and a mixing hole, one end of the air hole is communicated with a steam flow passage through a rectifier, one end of the oil hole is communicated with a heavy oil flow passage through the rectifier, and the other ends of the air hole and the oil hole are both communicated with the mixing hole. According to the mass flow heavy oil pulverization spray gun suitable for burning of the low NOx, through reasonable matching of the aperture ratio of various nozzles and the draw ratio of the mixing hole, the flow state in the nozzle is controlled to enable the outlet of the mixing hole to form a mist like flow, and pulverization grain size of the nozzle is effectively guaranteed. By means of the mass flow heavy oil pulverization spray gun suitable for burning of the low NOx, when flow quantity is under 0.6-3.3t / h, Soauter mean diameter (SMD) can reach smaller than 80mum.

Description

technical field [0001] The invention relates to an atomizing oil gun for fuel burners used in power station boilers and related industrial furnaces, in particular to a gas-assisted atomizing oil gun for burning heavy oil and related high-viscosity combustible fluids, which can be applied to fuel-fired power station boilers and industrial furnaces. Low NOx combustion. Background technique [0002] With the expansion of overseas markets by domestic large-scale enterprises, the demand for oil furnaces, which had been stagnant due to rising oil prices, has gradually increased; since the beginning of the 21st century, countries around the world have also paid more and more attention to energy-saving and emission-reduction technologies, so there is huge room for development of low-NOx heavy oil combustion technologies. Since the first heavy oil burner came out, heavy oil burners have been widely used in industrial furnaces such as glass, ceramics, refractory materials, cement and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D11/38F23D11/40
Inventor 陈鹏飞张定海李龙飞陈灿吕文豪谢佳杨伟东费俊杨国华洪流
Owner NO 11 INST OF NO 6 ACADEMY OF CHINA AEROSPACE SCI & TECH
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