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Circulating fluidized bed boiler hearth with grand-cross penetrating middle wall structure

A circulating fluidized bed and boiler furnace technology, which is used in fluidized bed combustion equipment, steam boilers, and molten fuels, etc., can solve problems such as the expansion of the heating surface being limited to a certain extent, and reduce impact and wear. , The effect of strong shock resistance and high physical strength

Inactive Publication Date: 2010-06-23
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods provide the extended heating surface for the furnace to varying degrees, but for super-large and super-high furnaces, the expansion of the heating surface is still limited to a certain extent

Method used

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  • Circulating fluidized bed boiler hearth with grand-cross penetrating middle wall structure
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  • Circulating fluidized bed boiler hearth with grand-cross penetrating middle wall structure

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Embodiment Construction

[0016] The circulating fluidized bed boiler furnace with a large cross penetrating through the middle partition wall structure includes air distribution plate 1, water cooling wall 2, ceiling 3, circulating fluidized bed boiler furnace 4, circulating fluidized bed boiler furnace 4 is surrounded by water cooling walls 2, circulation The upper end of the fluidized bed boiler furnace 4 is provided with a ceiling 3, the lower end of the circulating fluidized bed boiler furnace 4 is provided with an air distribution plate 1, and the circulating fluidized bed boiler furnace 4 is provided with a cross through the middle partition wall 5, and the cross through the middle partition wall 5 comprises a vertically arranged width direction partition wall 6 and a depth direction partition wall 7, and the large cross runs through the partition wall 5. The vertical direction is the same as the furnace height, and the width and depth directions are the same as the furnace width and depth. The l...

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Abstract

The invention discloses a circulating fluidized bed boiler hearth with a grand-cross penetrating middle wall structure, comprising an air distributing board, a water cooled wall, a ceiling and a circulating fluidized bed boiler hearth, wherein the water cooled wall is arranged around the circulating fluidized bed boiler hearth, the upper end of which is provided with the ceiling, the lower end of the circulating fluidized bed boiler hearth is provided with the air distributing board, and a grand-cross penetrating middle wall is arranged in the circulating fluidized bed boiler hearth and comprises a middle wall vertically arranged in the width direction and a middle wall vertically arranged in the depth direction. The grand-cross penetrating middle wall is arranged in the hearth and has the heated condition similar to that of the ambient water cooled wall so that large enough evaporating and heat-transferring area can be provided, and meanwhile, a membrane wall or a light tube is selected as required so that the concentration, the temperature and the heat-transferring uniformity of materials in the hearth are ensured.

Description

technical field [0001] The invention relates to a circulating fluidized bed boiler, in particular to a circulating fluidized bed boiler furnace with a large cross penetrating middle partition wall structure. Background technique [0002] With the large-scale and high-parameterization of circulating fluidized bed (CFB) boilers, the heating area of ​​the furnace continues to increase, and the height of the furnace continues to increase, and the increasing height of the furnace brings problems to the boiler foundation, structural layout and manufacturing costs. Reasonable It is a problem that must be solved to set the heating surface of the boiler furnace after the CFB boiler is enlarged. [0003] At present, there are different technical solutions in the field of CFB boiler technology to solve the problem of heating surface layout in the large-scale CFB boiler. The applicant, Alstom, proposed a method of setting a partition at the lower part of the furnace (patent publication...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/18F22B31/08
Inventor 程乐鸣方梦祥王勤辉施正伦余春江周劲松王树荣高翔骆仲泱倪明江岑可法
Owner ZHEJIANG UNIV
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