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Circulating fluidized bed boiler air supply device

A technology of circulating fluidized bed and air supply device, which is applied to fluidized bed combustion equipment, fuel burning in a molten state, lighting and heating equipment, etc., can solve problems such as coking accidents, uneven flow field, etc. The effect of slag leakage, improving efficiency and improving performance

Pending Publication Date: 2016-11-02
西安亚岱新能源科技有限公司
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AI Technical Summary

Problems solved by technology

However, due to air duct layout and other reasons, the problem of uneven flow field often occurs; if the air volume is not properly controlled, there will be problems with fluidization uniformity under low air volume, which often leads to coking accidents

Method used

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  • Circulating fluidized bed boiler air supply device

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Embodiment Construction

[0007] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0008] see figure 1 , the present invention includes an air distribution plate 7 with an air inlet and a wind cap 1 arranged on the upper air distribution plate 7, and an adjusting member 3 for adjusting the air intake is arranged at the air inlet of the upper air distribution plate 7. Wherein the adjusting part 3 is connected with the push rod 4 . The adjusting part 3 is a ring-shaped plate structure set in the air inlet of the air distribution plate 7. The opening diameter of the air cap 1 accounts for 1 / 3-2 / 3 of the entire area of ​​the air distribution plate 7, and the opening of the air cap 1 in the central area The ratio of the aperture diameter of the hole to the aperture diameter of the opening 2 of the wind cap 1 in the remaining area is 3:5-4:5.

[0009] Its working process is as follows: before the boiler starts, the air inlet of the lower air di...

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Abstract

The circulating fluidized bed boiler air supply device includes the upper air distribution plate (7) with an air inlet and the air cap (1) arranged on the upper air distribution plate (7), and the air inlet of the upper air distribution plate (7) is set There is an adjustment piece (3) for adjusting the air intake volume. The present invention can control the size of each vent of the air distribution device according to needs, realize the adjustment and control of the resistance of the air distribution device, improve the performance of the air distribution device, and thus achieve the purpose of graded air distribution and uniform fluidization. Therefore, not only the efficiency of the circulating fluidized bed boiler is improved, but also the problems of wind cap wear and slag leakage can be fundamentally solved.

Description

technical field [0001] The invention belongs to the field of energy-saving equipment, in particular to an air supply device for a circulating fluidized bed boiler. Background technique [0002] In recent years, my country has rapidly become the main country in the world to develop and use circulating fluidized bed boiler (CFB) technology. Circulating fluidized bed boilers use circulating fluidized bed combustion technology, which has the advantages of good fuel adaptability, high efficiency, and less pollution emissions. The current air distribution device is designed to open a certain number of holes on the air distribution plate, and then install the upper wind cap. During operation, a large-aperture air distribution structure with large ventilation area and small air distribution resistance is usually selected. However, due to air duct layout and other reasons, the problem of uneven flow field often occurs; if the air volume is not properly controlled, there will be pro...

Claims

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Application Information

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IPC IPC(8): F23C10/20
Inventor 邱阔
Owner 西安亚岱新能源科技有限公司
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