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Circulating fluidized bed boiler

A circulating fluidized bed and boiler technology, which is applied in the field of thermal equipment, can solve problems such as safety hazards, economic losses, and hazards of circulating fluidized bed boilers, and achieve the effects of improving safety, reducing thermal stress, and increasing strength

Active Publication Date: 2011-10-26
TAIYUAN BOILER GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The bed turning phenomenon will bring great harm to the operation of circulating fluidized bed boilers, and improper control will bring huge safety hazards and economic losses

Method used

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  • Circulating fluidized bed boiler
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  • Circulating fluidized bed boiler

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Experimental program
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Effect test

Embodiment Construction

[0015] The principle, structure and specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0016] figure 1 It is a schematic diagram of the overall structure of the circulating fluidized bed boiler provided by the present invention. The boiler includes a symmetrically arranged pant-leg furnace 1, a water-cooled wall 2 in the furnace, a separator 3 symmetrically distributed on both sides of the furnace, a tail flue 4, two air chambers at the bottom of the furnace, and two air chambers respectively. Header 6. The circulating fluidized bed boiler is provided with a header 11 at the fork at the bottom of the furnace. A group of intermediate membrane walls 9 are sent upward, and the intermediate membrane walls are connected to the furnace top header 12 outside the furnace, and the furnace is divided into two completely symmetrical parts. It is close to but not welded, and can be freely expanded and contra...

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Abstract

The invention discloses a circulating fluidized bed boiler, which belongs to the technical field of thermal power equipment. The circulating fluidized bed boiler consists of an v-shaped hearth, separators, tail flues, a water cooled wall, a middle membrane-type wall, a ribbed plate membrane-type wall, a U-shaped wall and headers, wherein the separators and the tail flues are symmetrically distributed on two sides of the hearth; the middle membrane-type wall divides the hearth into two completely symmetric parts to prevent a bed from titling; the upper part of the middle membrane-type wall is provided with a vent hole to maintain the pressure balance of the hearth; and the airflows in the U-shaped wall flow alternately to reduce the heat difference in the hearth. The circulating fluidized bed boiler avoids the bed tilting phenomenon in the v-shaped hearth of the circulating fluidized bed boiler, has the characteristics of uniform temperature distribution in the hearth and high safety and is a better circulating fluidized bed boiler which is particularly adaptable to the development trend of large circulating fluidized bed boilers.

Description

technical field [0001] The invention relates to a circulating fluidized bed boiler, which belongs to the technical field of thermal equipment. Background technique [0002] Clean coal technology is one of the leading technologies for solving the environmental problems caused by coal in the world, and it is also an important field of international high-tech competition. Circulating fluidized bed combustion technology is one of the most commercialized clean coal combustion technologies at present. Circulating fluidized bed boilers have considerable vitality in the energy and power markets at home and abroad. [0003] Large-scale is the main development direction of the current circulating fluidized bed boiler. In the process of large-scale development, circulating fluidized bed boilers with pants-leg structure have been produced. Because the circulating fluidized bed boiler with pants leg structure has obvious advantages in the scale-up design, it has also become the first c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C10/10F23C10/18
Inventor 张扬杨海瑞吴玉新晁俊楠刘青
Owner TAIYUAN BOILER GROUP
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