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Annular furnace circulating fluidized bed boiler with multiple separators

A technology of circulating fluidized bed and cyclone separator, which is applied in the direction of fluidized bed combustion equipment, burning fuel in molten state, lighting and heating equipment, etc. The layout plan cannot be applied to circulating fluidized bed boilers and other issues

Active Publication Date: 2018-03-23
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the existence of the water-cooling column, the distribution of the gas-solid flow field in the furnace is changed, especially for the two separators located in the middle of both sides of the furnace. Gas-solid circulation between vessels is weakened
The multi-separator layout plan summarized in the development of the circulating fluidized bed boiler with a rectangular upper section of the furnace is no longer applicable to the circulating fluidized bed boiler with this structure

Method used

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  • Annular furnace circulating fluidized bed boiler with multiple separators
  • Annular furnace circulating fluidized bed boiler with multiple separators
  • Annular furnace circulating fluidized bed boiler with multiple separators

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Embodiment Construction

[0031] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

[0032] The annular furnace circulating fluidized bed boiler with multiple separators of the present invention includes a furnace with an annular cross section and a plurality of parallel cyclone separators; each cyclone separator is composed of an inlet flue and a cylinder; each cyclone separates The cylinder structure and size of the device are the same.

[0033] Specifically, the furnace with a ring-shaped cross section has a water cooling ...

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Abstract

A circulating fluidized bed boiler with an annular furnace, comprising: a furnace; two sets of cyclone separators, respectively arranged on the outside of two side walls, each set of cyclone separators has three cyclone separators, the cylinder structure of each cyclone separator and The dimensions are all the same, where: in the plane across the center points of all furnace flue gas outlets, the center points of the furnace flue gas outlets of the two outermost separators of one set of separators are the same as the outermost two separators of the other set of separators The center point of the furnace flue gas outlet of the two separators is symmetrical about the intersection point of the furnace center plane perpendicular to the first side wall and the furnace center plane perpendicular to the second side wall; the outermost two of each set of cyclone separators The center point of the furnace flue gas outlet of each separator is axisymmetric to the furnace center line formed by the intersection line between the furnace center plane perpendicular to the first side wall and the plane; and the two outermost cyclone separators of each set of cyclone separators The positional relationship of the location satisfies: when b≤2m, b / 3≤a<b-0.3m; when b>2m, m / 2≤a<b-0.3m.

Description

technical field [0001] The invention relates to the technical field of circulating fluidized bed boilers, in particular to the arrangement of cyclone separators of circulating fluidized bed boilers. Background technique [0002] Since the circulating fluidized bed combustion technology was applied in the field of power generation, it has been developing in the direction of large capacity and high parameters. While the capacity and parameters of the circulating fluidized bed boiler are enlarged, in order to ensure the separation efficiency, the size of the cyclone separator cannot be increased synchronously with the size of the furnace, so the parallel arrangement of multiple cyclone separators is a commonly used structure for large circulating fluidized bed boilers form. However, the gas-solid two-phase flow in a circulating fluidized bed with multi-cyclone separators belongs to the problem of multiphase flow in parallel channels. Both the literature reports and the actual ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C10/08
Inventor 王小芳孙运凯吕清刚那永洁高鸣
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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