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Low NOx combustion method

A combustion method and combustion chamber technology, which can be used in combustion methods, combustion types, combustion equipment, etc., and can solve problems such as complex structure and inability to use boiler systems.

Inactive Publication Date: 2015-07-08
广西日风能源发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a method cannot utilize the existing boiler system, and the structure is complicated

Method used

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Embodiment Construction

[0023] The invention relates to the problem of low NOx combustion of biomass. Biomass low NOX combustion technology system is to achieve the purpose of clean emission through the burning of fixed carbon and inhibiting the formation of NOX. Starting from the combustion characteristics of biomass fuel and biomass clean combustion technology, the air field, temperature field, excess air coefficient, and heating surface distribution of the burner are comprehensively and reasonably arranged. The biomass clean burner has strict considerations on the choice of fuel, the temperature of the combustion air, the amount of oxygen supplied to the flame zone at each stage, and the combustion method.

[0024] (1) Fuel selection. Select the dried and pulverized particulate biomass fuel, which requires water content ≤ 15% and particle size ≤ 3mm, because the powdery object has a large surface area ratio and low water content, and it will volatilize at 300°C--400°C in an oxygen-deficient atmos...

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Abstract

The invention provides a biomass low NOx combustion method, which includes the steps of: drying, crushing and sieving biomass to obtain microparticle molded fuel; sending biomass microparticles into a combustion machine to combust through a feed inlet, with the combustion chamber of the combustion machine being a horizontal cylindrical space; making the flame in the combustion chamber of the combustion machine form radial vortex; letting the flame in the combustion machine enter a boiler furnace at the combustion chamber tail end through a fire spitting pipeline tangentially disposed along the combustion chamber; and supplying oxygen to the boiler furnace, etc. Starting from the combustion characteristics of biomass fuels and biomass clean combustion technologies, the method provided by the invention makes comprehensive and reasonable arrangement on furnace air flow field, temperature field, excess air coefficient, combustion level and the like, and can effectively reduce the NOx emission.

Description

technical field [0001] The invention relates to a method for burning biomass with low NOx. Background technique [0002] Biomass low-NOX combustion technology achieves the purpose of clean emission by burning out fixed carbon and inhibiting the formation of NOX. In the domestic public literature, there have been some reports on the research on biomass low NOx combustion technology, for example: application number CN200410098604.0, publication number CN1789807, Chinese patent titled "Biomass low NOx combustion device and combustion method". The device of this patent includes: a vertical combustion furnace with a flue outlet above it, and its inner cavity is divided into a pyrolysis chamber and a combustion chamber connected at the bottom by a partition, and a communication port connecting the pyrolysis chamber and the combustion chamber is provided at the lower part of the partition There is a hopper above the pyrolysis chamber; an inclined grate and a rotating slagging devi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C5/32F23C7/02
Inventor 韦锦然李春荣黄仁焕韦文伟郭昌明
Owner 广西日风能源发展有限公司