Working method and device of pre-mixing type secondary combustor

A secondary combustion and working method technology, which is applied in the direction of combustion methods, burners, gas fuel burners, etc., can solve the problems that premixed combustion cannot be applied, and achieve the goal of reducing the excess air coefficient and ensuring safety and reliability Effect

Inactive Publication Date: 2012-10-31
FOSHAN QIDI ENERGY SAVING TECH
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  • Abstract
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Problems solved by technology

[0003] The invention discloses a working method and device of a premixed secondary burner, which is used

Method used

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  • Working method and device of pre-mixing type secondary combustor
  • Working method and device of pre-mixing type secondary combustor

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] See attached Figure 1-2 , the method of the present invention is: a, combustion-supporting air is divided into two parts by three-way diverter, and i.e. primary air and secondary air are controlled flow by valve respectively;

[0026] b. Combustion-supporting air (primary air) is delivered to the premixer 7 through the delivery pipe to mix with the combustion gas;

[0027] c. Deliver the premixed mixed gas into the premixing pipe 2 through the premixing connecting pipe 6 and output it through the output hole on the burner 3 .

[0028] d. Combustion-supporting air is introduced into the main body shell 1 through the secondary air delivery pipe, and delivered to the combustion burner 3 through the secondary air guide pipe 4 to fully mix with the mixed gas and burn.

[0029] In the step a, the combustion-supportin...

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Abstract

The invention discloses a working method and a device of a pre-mixing type secondary combustor. The invention aims at providing a working method and a device of a pre-mixing type secondary combustor capable of effectively saving the energy source. The method disclosed by the invention comprises the steps of: firstly, dividing the combustion air into two parts through a tee shunt, and respectively controlling the flow rates through valves; and then, conveying the combustion air (primary air) into a pre-mixer through a pipeline to be fully mixed with fuel gas to reduce the air coefficient of excess; conveying the pre-mixed mixed gas into a pre-mixing pipe through a pre-mixing connecting pipe and outputting the mixed gas through an output hole on a combustion nozzle; and finally, introducing the other part of the combustion air (secondary air) into a main body shell through a conveying pipe, conveying the combustion air to the combustion nozzle through a secondary air flow duct to be fully mixed with the mixed gas and to cool the combustion nozzle. The method disclosed by the invention is mainly applied to ceramic kiln combustors, nonferrous metal smelting furnaces, holding furnaces and industrial boilers.

Description

technical field [0001] The invention relates to the technical field of industrial kiln combustion systems, in particular to a working method and device of a premixed secondary burner. Background technique [0002] In the industrial field, when using gas to burn ceramics and heat and smelt non-ferrous metals, diffusion combustion is usually used. The disadvantage is that diffusion combustion usually burns while burning gas and combustion-supporting air. Sufficient, often makes the gas either not fully combusted, or the excess air coefficient is too large, the combustion efficiency is low, and the concentration and emission of harmful gases in the combustion tail gas are relatively large. The pre-mixed combustion method is used, that is, the gas and the combustion-supporting air are pre-mixed before combustion, and then combusted after being fully mixed. The concentration and emission are small, the flame temperature is high, and gas is saved. Its shortcoming is that premixe...

Claims

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Application Information

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IPC IPC(8): F23D14/02F23D14/46F23D14/62
Inventor 邓毅坚
Owner FOSHAN QIDI ENERGY SAVING TECH
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