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Gas burner capable of adjusting premix

A gas burner and premixing technology, which is applied to gas fuel burners, burners, combustion methods, etc., can solve the problems of unstable gas volume, inability to meet the requirements of the process curve, and difficult process control.

Inactive Publication Date: 2012-02-15
金艺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual operation, due to the influence of gas pressure, the amount of gas injected by the burner is extremely unstable, small and large, and the gas injection volume is small, which cannot meet the requirements of the process curve, the process is difficult to control, the combustion efficiency is not good, and it is harmful to the combustion big organ damage
When a large nozzle sprays a small fire, due to insufficient gas, the fire cannot be sprayed out, and the fire can only burn near the nozzle. After a long time, the nozzle is easy to burn out, which affects the thermal efficiency and is easy to damage the nozzle.

Method used

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  • Gas burner capable of adjusting premix

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specific Embodiment approach

[0008] Five, specific embodiment: the present invention will be further described below in conjunction with accompanying drawing:

[0009] The small nozzle gas pipe 1 of this gas burner is designed according to the minimum heat required for implementing the furnace. The small nozzle gas pipe 1 is located at the center of the gas burner, and the annular space between the small nozzle gas pipe 1 and the large nozzle gas pipe 10 is an air channel 7 . Small nozzle gas pipe 1 front end side circumferentially opens gas injection hole 2, and front end welds blocking plate 4, and rear end welds blocking plate 5, and the rear end side is connected with gas by the gas inlet pipe 6 welded therewith. A gas control valve is installed on the gas inlet pipe 6, which is used to adjust and control the amount of gas entering the small nozzle gas pipe 1. The air swirl sheet 3 is set on the outside of the small nozzle gas pipe 1, the height of the air swirl sheet 3 is slightly smaller than the i...

Embodiment 1

[0014] The present invention is used in the old factory of Puyang Pu Nai Functional Materials Co., Ltd. 1# kiln furnace with 1.6 million kcal, the natural gas pressure is 8Pa, and one furnace is provided with 8 burners. According to the furnace type, heat required by the furnace, and natural gas pressure, the amount of natural gas is distributed to the small nozzle gas pipe 1 and the large nozzle gas pipe 10 in the 8 burners. The amount of natural gas ejected from the small-nozzle gas pipe 1 is 0.5-5 m3 / hour, and the amount of natural gas ejected from the large-nozzle gas pipe 10 is 5-25 m3 / hour. After processing and assembling, the gas pipe 1 is ignited. Raise the temperature from 100°C to 400°C according to the heating curve, switch to the large nozzle gas pipe 10 after keeping the temperature at 400°C for 8 hours, slowly raise the temperature to 1100°C according to the heating curve 500-600-700-800-900-1100°C, and then keep the temperature for 4 After 1 hour, continue to he...

Embodiment 2

[0016] The furnace used in Puyang Glass Factory is 1.6 million kcal, one burner, and the natural gas pressure is 0.2Mpa. It is designed, processed, installed, ignited and operated according to the furnace type and the heat required by the furnace. The natural gas injection volume per hour is 187 m3 / hour. The original natural gas injection volume is 200 m3 / hour, saving energy by 7%.

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Abstract

The invention relates to a gas burner capable of adjusting premix, and the gas burner is provided with a small nozzle gas pipe and a large nozzle gas pipe, wherein the small nozzle gas pipe is located in the center of the burner; the large nozzle gas pipe is sleeved at the outer side of the small nozzle gas center; air passages are respectively arranged between the small nozzle gas pipe and the large nozzle gas pipe and between the large nozzle gas pipe and the outer wall of the burner; gas orifices are respectively arranged at the front end faces of the small nozzle gas pipe and the large nozzle gas pipe; the front and rear ends of the small nozzle gas pipe and the large nozzle gas pipe are respectively provided with a baffle, the rear ends of the small nozzle gas pipe and the large nozzle gas pipe are communicated with gas through a gas inlet pipe and a gas control valve; and the air passages are respectively internally provided with an air swirl plate and the rear ends of the air passages are respectively provided with a baffle, the rear ends of the air passages are communicated with compressed air through the air inlet pipe and the air control valve. Gas quantity and combustion air rate ejected by the burner are both adjustable, and the gas burner has the advantages of fast burning velocity, high flame temperature, improved heat efficiency, decreased gas volume and low cost.

Description

technical field [0001] The invention relates to a burner, in particular to a gas burner with adjustable premixing for natural gas, gas gas, coal gas and biogas. Background technique [0002] Power plant boilers, various industrial boilers, civil heating boilers, various heating furnaces, various light industrial kilns, and steelmaking furnaces all need burners, which usually use natural gas, gas, coal gas or biogas as fuel. When working, it is necessary to have a strict heating curve to protect the furnace body and ensure the product quality in the furnace. The nozzles of the currently used gas burners are designed according to the maximum amount of gas entering, and there is only one specification. In actual operation, due to the influence of gas pressure, the amount of gas injected by the burner is extremely unstable, small and large, and the gas injection volume is small, which cannot meet the requirements of the process curve, the process is difficult to control, the co...

Claims

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Application Information

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IPC IPC(8): F23D14/02F23D14/60F23D14/62
Inventor 金艺金春花王芳金术杰姜宇金盛珠
Owner 金艺
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