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Device and method for w shape flame boiler completely burning

A technology for burning out wind and flames, applied in combustion equipment, lighting and heating equipment, etc., can solve problems such as unstable combustion, poor combustion effect, and reduced combustion efficiency, so as to increase residence time, increase combustion rate, and improve combustion efficiency Effect

Inactive Publication Date: 2005-03-02
HUAZHONG UNIV OF SCI & TECH
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Benefits of technology

This technology helps improve the burning process by increasing turbulences and mixings inside the furnaces during the early stage or later phases where there are fewer fuel atoms remaining for ignition compared with older designs that only allow some atom molecules from top layers to be burnt out without being consumed beforehand (firing). By doing this, more efficient energy conversion occurs while reducing emissions such as nitrogen oxides (NOx) and particulate matter (PM), which contribute significantly towards global pollution levels caused by smoggases released through industrial processes like power plants' exhaust systems.

Problems solved by technology

This technical problem addressed by this patented describes how to improve the performance of weldable lignitous iron blast fuels in small diameter cylindrical converged mode smelting processes without causing excessive nitrogen oxide emission levels at certain locations within the upper portion of the converter.

Method used

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  • Device and method for w shape flame boiler completely burning
  • Device and method for w shape flame boiler completely burning
  • Device and method for w shape flame boiler completely burning

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Embodiment Construction

[0016] The structure of the W-type flame boiler with overfired air is attached Figure 4 As shown, the burner in the figure only draws the rear wall part, the front wall is symmetrically arranged, the front wall 1, the rear wall 2, the primary air and secondary air nozzles 3 are located on the front and rear wall arches, and the tertiary air nozzle 4 is located vertically on the lower furnace. On the front and rear walls, the burn-out air nozzle 5 is located at the upper throat of the burner's primary air pulverized coal nozzle on the front and rear wall arches. W-flame boilers of different capacities produced by different companies have different types and numbers of burners, so the number and size of the overfired air nozzles are also different, and specific designs are required. The shape of the overfire air nozzle 5 is not limited. The cross-section and flow field of the W-type flame boiler with overfired air are attached Figure 5 As shown, the direction of the arrow in...

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Abstract

The invention provides a W type fire boiler burned wind device and its method; it belongs to W type fire boiler combustion technology. A burned wind discharging aperture is arranged on the wind coal powder aperture neck position, 5-10% of total wind quantity are blown into the upper place of the furnace with angle of 10-45 degree, the wind velocity is 30-60m/s, the wind temperature is the same to the secondary wind temperature. In the post period, the coal powder is disturbed in the furnace, strengthens the dispersing of oxygen to the particle surface and supply oxygen, upgrades the combustion velocity of coal powder particle, increases the burn rate, upgrades the combustion efficiency of W type fire boiler; at the same time, because the wind quantity is decreased in the combustion area and the temperature is decreased in the burned area, then the discharge quantity of NOX can be decreased.

Description

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Claims

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Application Information

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Owner HUAZHONG UNIV OF SCI & TECH
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