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A Cyclone Separator for Circulating Fluidized Bed Boiler with Inclined Air Inlet Section of Central Tube

A cyclone separator and circulating fluidized bed technology, which is applied in the directions of fluidized bed combustion equipment, fuel burning in a molten state, lighting and heating equipment, etc. The probability of cylinders, the effect of promoting separation, and improving efficiency

Active Publication Date: 2017-10-27
HUANENG POWER INT INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a circulating fluidized bed boiler cyclone separator with an inclined cross-section of the air inlet of the central cylinder, which solves the problem of low separation efficiency of the cyclone separator caused by the unreasonable flow field in the cyclone separator, and improves the efficiency of the cyclone separator. Improve the separation efficiency of the circulating fluidized bed boiler cyclone separator, which is conducive to the stable and efficient operation of the circulating fluidized bed boiler

Method used

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  • A Cyclone Separator for Circulating Fluidized Bed Boiler with Inclined Air Inlet Section of Central Tube
  • A Cyclone Separator for Circulating Fluidized Bed Boiler with Inclined Air Inlet Section of Central Tube
  • A Cyclone Separator for Circulating Fluidized Bed Boiler with Inclined Air Inlet Section of Central Tube

Examples

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Effect test

Embodiment 1

[0043] see figure 1 , figure 2 , a cyclone separator with an inclined central cylinder air inlet, comprising a tapered inlet flue 1, a cyclone separator body 2, a central cylinder 3, and a separator standpipe 4. Wherein, the tapered inlet flue 1 is connected to the side of the separator body 2, the lower part of the separator body 2 is connected to the upper part of the separator standpipe 4, and the central cylinder 3 is inserted into the separator body 2 from the upper part of the separator body 2.

[0044] The angle a between the air inlet section of the central cylinder 3 and the horizontal plane is 10°. There is an included angle c of 30° between the vertical plane where the long axis of the air inlet section is located and the vertical plane where the airflow direction is located. The top of the central cylinder 3 is fixed in a free hanging manner, and can be freely matched and relatively slid with the cyclone separator body 2 . The outlet sectional area of ​​the tap...

Embodiment 2

[0046] Such as figure 2 , image 3 As shown, a cyclone separator with an inclined air inlet of the central cylinder includes a tapered inlet flue 1 , a cyclone separator body 2 , a central cylinder 3 , and a separator standpipe 4 . Wherein, the tapered inlet flue 1 is connected to the side of the separator body 2, the lower part of the separator body 2 is connected to the upper part of the separator standpipe 4, and the central cylinder 3 is inserted into the separator body 2 from the upper part of the separator body 2.

[0047]The cross-section of the air inlet of the central cylinder 3 is in the form of closing, and the effect of reducing the cross-sectional area of ​​the entrance of the central cylinder 3 is achieved by adding a closing cover plate 5 . The angle a between the air inlet section of the central cylinder 3 and the horizontal plane is 5°. There is an included angle b between the closing cover plate 5 and the vertical plane, which is 15°. The vertical plane w...

Embodiment 3

[0049] Such as figure 2 , Figure 4 As shown, a cyclone separator with an inclined air inlet of the central cylinder includes a tapered inlet flue 1 , a cyclone separator body 2 , a central cylinder 3 , and a separator standpipe 4 . Wherein, the tapered inlet flue 1 is connected to the side of the separator body 2, the lower part of the separator body 2 is connected to the upper part of the separator standpipe 4, and the central cylinder 3 is inserted into the separator body 2 from the upper part of the separator body 2.

[0050] The air inlet section of central tube 3 can be made up of an oblique plane and a horizontal plane, and the maximum length of the horizontal plane along the oblique direction is m is 50% of the diameter D of the central cylinder 3, and the height difference of the oblique plane in the vertical direction is n is 15% of the diameter D of the central cylinder 3 . The angle c between the vertical plane where the long axis of the air inlet section is loc...

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Abstract

The invention provides a circulating fluidized bed boiler cyclone separator with a center cylinder with an inclined air inlet cross section. The cyclone separator comprises a tapered inlet flue duct, a cyclone separator body, the center cylinder and a vertical separator pipe, wherein the tapered inlet flue duct is connected with the side surface of the cyclone separator body; the lower part of the cyclone separator body is connected with the upper part of the vertical separator pipe; the center cylinder is inserted in the cyclone separator body from the upper part of the cyclone separator body; the air inlet cross section of the center cylinder is inclined to form a certain angle with the horizontal plane; the air inlet cross section can also be composed of an inclined plane surface and a horizontal plane surface or be a curved surface; and a closing-in cover plate can be additionally mounted at the lower part of the center cylinder to reduce the area of the air inlet cross section. According to the circulating fluidized bed boiler cyclone separator with the center cylinder with the inclined air inlet cross section, the fluid field in the cyclone separator can be improved so as to increase the separation efficiency of the cyclone separator.

Description

technical field [0001] The invention belongs to the technical field of circulating fluidized bed boilers, and relates to a cyclone separator of a circulating fluidized bed boiler with an inclined section of an air inlet of a central cylinder. Background technique [0002] Circulating fluidized bed boilers have the advantages of strong fuel adaptability, quick start and stop, and low pollutant emissions, and have been rapidly developed in my country in recent years. The cyclone separator is an important part of the circulating fluidized bed boiler, which can separate the coarse particles and fine particles in the flue gas, and the separated coarse particles return to the furnace through the return standpipe and the return device. The separation efficiency of the cyclone separator directly affects the balance of material circulation, and has an important effect on the furnace temperature, fan energy consumption, wear of the rear heating surface, and boiler thermal efficiency. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C10/18
CPCF23C10/18
Inventor 时正海唐巍高洪培肖平
Owner HUANENG POWER INT INC
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