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Low-nitrogen burning device applicable to fuel gas with low heat value

A low-nitrogen combustion, low calorific value technology, applied in gas fuel burners, burners, combustion methods, etc., can solve the problems of destroying the stability of gas combustion and fire extinguishing risks, and achieve stable combustion and control the effect of NOx generation.

Inactive Publication Date: 2019-07-26
山东博然电力科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But for gas with low calorific value, this method will destroy the stability of gas combustion and cause fire risk

Method used

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  • Low-nitrogen burning device applicable to fuel gas with low heat value

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Embodiment Construction

[0013] As shown in the accompanying drawings, a low-nitrogen burner 01 suitable for low calorific value gas is composed of a gas distribution tank 11, 6~12 main combustion spray guns 12, a stable combustion spray gun 13, a combustion air equalizing plate 21, a rotary Flow generator 22, combustion stabilizing plate 23 and main combustion nozzle 120 of main combustion spray gun 12 outlets, combustion stabilization nozzle 130 of combustion stabilization spray gun outlet and several combustion holes 131 distributed thereon.

[0014] When the combustion device is running, the gas first enters the distribution tank 11, and then partially enters the entrance of the combustion-stabilizing spray gun 13 located at the central outlet of the distribution tank, and enters the combustion chamber of the boiler or kiln through several combustion holes 131 on the combustion-stabilizing nozzle 130 , so as to ensure that there is always a certain amount of gas stably burning near the outlet axis ...

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Abstract

The invention discloses a low-nitrogen burning device which is applied to a kiln furnace or a boiler and is used for burning gaseous fuel with a low heat value. The burning device consists of a fuel gas distribution tank, a main burning spray gun, a stable burning spray gun, a flow-equalizing plate, a stable burning disc and a swirl generator, wherein the fuel gas is distributed through the distribution tank and then uniformly flows into the stable burning spray gun and the main burning spray gun; the fuel gas is fed into a burning chamber through various nozzles; and the burning-supporting air is introduced into the burning device through the flow-equalizing plate, is then separately injected into the burning chamber through the stable burning disc and a swirling device, and is mixed andburned together with fuel gas which is fed from the stable burning disc and the swirling device. Through a burning way, the fuels and the burning-supporting air are supplied into the burning chamber in a grading manner, so that control of a burning temperature of the fuel gas is facilitated, and the aim of reducing generation of nitrogen oxide as much as possible is fulfilled. Meanwhile, because the situation that a certain amount of fuel gas and burning-supporting air can be fired and burned in time nearby an axis of a burner outlet is ensured, the device is applied to stable burning of the fuel gas with the low heat value.

Description

technical field [0001] The invention relates to the technical field of gas combustion, and more particularly relates to a low calorific value gas low nitrogen combustion device used in kilns or boilers. Background technique [0002] As a commonly used fuel, gas has the advantages of being environmentally friendly. The dust and SO in the flue gas produced after combustion 2 The emission concentration is low, and the main pollutant is the N element contained in itself or the N in the air 2 Nitrogen oxides (NOx) formed with flue gas under high temperature conditions. [0003] Due to the different specific components of various gases, the combustion characteristics and pollutant generation characteristics are quite different. Blast furnace gas, producer gas, carbon black tail gas and other gases all use CO as the main combustible component, and contain more non-combustible gases and lower calorific value (that is, less heat is released after the unit gas is fully burned). [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/24F23D14/26F23D14/70
CPCF23D14/24F23D14/26F23D14/70
Inventor 张玉斌蒋海涛林科
Owner 山东博然电力科技有限公司
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