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Circulating fluidized bed boiler

A circulating fluidized bed and boiler technology, applied in the field of combustion, can solve the problems of increased boiler manufacturing costs and large floor space

Pending Publication Date: 2021-08-20
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under this structure, because the inlet section of the cyclone separator is arranged between the furnace and the separator, there is a certain distance between the cyclone separator and the furnace of the circulating fluidized bed boiler, and its overall floor space is relatively large. In addition, , because the cyclone separator needs to lay insulation materials separately, which increases the manufacturing cost of the boiler

Method used

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Embodiment Construction

[0036] 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. In the drawings, the same reference numerals denote the same or similar components.

[0037] The invention proposes a novel circulating fluidized bed boiler, which includes a furnace, a separator, and a feeder that are connected in pairs. Part of the side walls of the furnace and the separator are shared, that is, there is a shared side wall. Alternatively, part of the side wall of the separator also forms the side wall of the furnace at the same time, that is, the shape of the separator remains unchanged, and there is a wall part whose shape matches the shape of the separator in the upper part of the furnace.

[0038] The technical solution of the present invention will be specifically described below with refe...

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Abstract

The invention relates to a circulating fluidized bed boiler. The circulating fluidized bed boiler comprises a hearth, a separator and a return feeder which communicate with each other in pairs, the separator is provided with a separation chamber, and the side wall of the hearth and the side wall of the separator share a part, namely a shared side wall; or in the top view of the circulating fluidized bed boiler, the lower part of the hearth is overlapped with the separation chamber. The common side wall is concave towards the hearth, so that the area of the cross section of the upper part of the hearth is smaller than that of the cross section of the lower part of the hearth.

Description

technical field [0001] Embodiments of the present invention relate to the field of combustion, and in particular to a circulating fluidized bed boiler. Background technique [0002] Circulating fluidized bed combustion technology is a clean combustion technology and one of the main methods to solve the problem of pollutants produced by combustion. Since the 1970s, the ash slag has been widely used and developed rapidly due to its advantages of being convenient for comprehensive utilization. However, for the bed type of circulating fluidized bed boilers in the prior art, a cyclone separator is generally arranged outside the furnace, and an inlet section of the cyclone separator with a certain length is arranged between the furnace and the separator to ensure the airflow The drag force has enough time to carry the accelerated solid particles and accelerate the solid particles to a suitable speed for separation in the cyclone separator. [0003] Under this structure, because ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/10F23C10/18
CPCF23C10/10F23C10/18
Inventor 吕清刚李百航那永洁高鸣
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI