Water-cooled or air-cooled high-temperature horizontal cyclone separator of circulating fluidized bed with accelerating section

A technology of cyclone separator and circulating fluidized bed, which is applied in the direction of the device whose axial direction of the cyclone can be reversed, the cyclone device, etc., which can solve the problems of large volume, high cost and complex structure of the separator, and reach the application range wide, low cost, and compact overall layout

Inactive Publication Date: 2010-07-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a water-cooled or steam-cooled high-temperature horizontal cyclone separator applied to a circulating fluidized bed with an acceleration section, so as to solve the problems of large volume, complex structure and high cost of existing separators

Method used

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  • Water-cooled or air-cooled high-temperature horizontal cyclone separator of circulating fluidized bed with accelerating section
  • Water-cooled or air-cooled high-temperature horizontal cyclone separator of circulating fluidized bed with accelerating section
  • Water-cooled or air-cooled high-temperature horizontal cyclone separator of circulating fluidized bed with accelerating section

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specific Embodiment approach 1

[0016] The quantity of the water-cooled separation chamber 20-16 and the quantity of the steam-cooled separation chamber 50-1 are determined according to the boiler capacity.

[0017] In this embodiment, the smoke velocity W1 at the inlet port 20-14 of the first acceleration section 20-12=16-20m / s, and the smoke velocity W2=25-30m at the outlet port 20-15 of the first acceleration section 20-12 / s.

[0018] Specific implementation mode two: combination image 3 To illustrate this embodiment, the first left membrane water wall 20-3, the first right membrane water wall 20-11 and the arc-shaped membrane water wall 20-1 in this embodiment are all surface-covered refractory and wear-resistant castings. The membrane-type water-cooled wall of the material can prevent the internal wear of the separator and prevent high-temperature coking. The inner diameter d1=(0.75-1.0)R1 of the first exhaust pipe 20-2 of this embodiment, the height h1=(0.5-0.75)R1 of the first exhaust pipe 20-2, t...

specific Embodiment approach 2

[0019] Specific implementation mode three: combination Figure 7 Describe this embodiment, the first left membrane type vapor cooling wall 50-6, the first right membrane type vapor cooling wall 50-7 and the arc-shaped membrane type vapor cooling wall 50-8 in this embodiment are all surface-covered fire-resistant The membrane-type gas-cooled wall of wear-resistant castable can prevent the internal wear of the separator and prevent high-temperature coking. The inner diameter d2=(0.75-1.0)R2 of the second exhaust pipe 50-2 in this embodiment, the height h2=(0.5-0.75)R2 of the second exhaust pipe 50-2, the second exhaust pipe 50 The distance L2=(0.75-1.0) R2 from the center of -2 to the outlet port 50-11 of the second acceleration section 50-9, R2 is the distance from the center of the second exhaust pipe 50-2 to the arc-shaped film-type gas-cooled wall 50-8 the horizontal distance of the inner surface. With such setting, the separation efficiency reaches 99.5%, and the separato...

specific Embodiment approach 3

[0020] Specific implementation mode four: combination image 3 Describe this embodiment, the quantity of the water-cooled separation chamber 20-16 of this embodiment is two, two water-cooled separation chambers 20-16 are symmetrically arranged side by side, two water-cooled separation chambers 20-16 and the first acceleration section 20-12 connect. Such setting can improve the separation efficiency, and the separation efficiency can reach 99.5%. Others are the same as in the first or second embodiment.

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Abstract

A water-cooled or air-cooled high-temperature horizontal cyclone separator of a circulating fluidized bed with an accelerating section relates to a water-cooled or air-cooled high-temperature horizontal cyclone separator. The invention aims to solve the problem that the separator of the existing circulating fluidized bed boiler has large volume, complicated structure and high production cost. In the water-cooled high-temperature horizontal cyclone separator, a first left membrane wall and a right membrane wall are connected with a circular arc membrane wall and the outlet end of a first accelerating section, the inlet end of the first accelerating section is connected with a hearth, the first left and right membrane walls are provided with a first exhaust pipe, the upper and lower ends of the first left membrane wall and the upper and lower ends of the first right membrane wall are communicated with a membrane wall upper header and a first annular header, the upper end of the circular arc membrane wall is communicated with a front / rear wall membrane wall collection upper header, the lower end is communicated with the first annular header; and the structure difference between the water-cooled high-temperature horizontal cyclone separator and the air-cooled high-temperature horizontal cyclone separator is that the membrane wall is changed to the air-cooled water wall. The invention has simple and compact structure and high separation efficiency, and can be used in large-size or medium-size circulating fluidized bed boilers.

Description

technical field [0001] The invention relates to a water-cooled or steam-cooled high-temperature horizontal cyclone separator. Background technique [0002] In the prior art, most of the cyclone separators used in circulating fluidized bed boilers are vertical adiabatic cyclone separators, the basic structure is cylindrical, with tangential air intake and upper exhaust, and an anti-wear layer and heat insulation layer are arranged inside. . Due to its high separation efficiency, simple structure and stable performance, this separator has been widely used in circulating fluidized bed boilers, and its operation is good. But there are also some problems, mainly including: large volume, large amount of steel used; too thick refractory and insulation materials; long start-up time, large heat loss; easy coking of the return system; easy cracking and peeling of the refractory layer; and flue layout Relatively complex, high resistance along the flue gas and other issues. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B04C5/00B04C5/02
Inventor 别如山宋兴飞姜信辉张缦董凯
Owner HARBIN INST OF TECH
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