Fluidized bed boiler with multifunctional cyclone separator

A technology of cyclone separator and fluidized bed boiler, applied in the field of fluidized bed combustion equipment and fluidized bed boiler, can solve the problems of increasing furnace height, increasing boiler power consumption, etc., so as to improve combustion efficiency, reduce pollution emissions, prolong The effect of high temperature oxygen enrichment process

Inactive Publication Date: 2004-02-25
清华紫光环保有限公司 +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In addition, increasing the furnace height requires a larger fan to maintain the state of pneumatic conveying in the combustion chamber, which puts higher requirements on the power of the fluidized bed boiler and greatly increases the power consumption of the boiler

Method used

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  • Fluidized bed boiler with multifunctional cyclone separator
  • Fluidized bed boiler with multifunctional cyclone separator
  • Fluidized bed boiler with multifunctional cyclone separator

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Embodiment approach

[0013] The fluidized bed boiler with multifunctional cyclone separator provided by the present invention comprises a fluidized bed boiler combustion chamber and a cyclone separator arranged outside the outlet of the fluidized bed combustion chamber, and the boiler combustion chamber includes an air distribution plate at the bottom of the combustion chamber 7. The high-speed fluidization zone 8 above the air distribution plate and the gas-phase combustion zone 9 on the upper part of the combustion chamber; the cyclone separator includes an inlet section 1, an outer cyclone tube 2 communicated with the inlet section, and an exhaust tube arranged in the outer cyclone tube. Gas cylinder 3 and conical ash bin 4. The shape of the inner wall of the inlet section 1 is a Venturi constriction, and a gas burnout tuyere 5 is installed on the inlet section. On the one hand, the mouth-shaped inlet section makes it easier for the gas overburning air to blow through the flue gas flow area; A...

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Abstract

The present invention relates to a fluidized-bed boiler with cyclone separator having double functions of separating and burning volatile component. Said separator includes an inlet section whose internal wall form is Venturi throat, external cyclone cylinder, exhaust cylinder and gas-burning air sleeve barrel mounted between external cyclone cylinder and exhaust cylinder, on the inlet section a gas-burning air hole is set, and the top of the gas-burning air sleeve barrel is equipped with hot air inlet. It can make the combustion space of fluidized-bed space be extended into the separator.

Description

technical field [0001] The invention relates to a fluidized bed boiler, in particular to a fluidized bed combustion equipment for burning fuel with low calorific value and high volatile content, and belongs to the technical field of energy and environmental protection. Background technique [0002] Fluidized bed boilers usually use quartz sand or boiler ash as the heat storage medium, and the high-temperature heat storage medium is blown by wind to fill the entire combustion chamber, and the boiler fuel is suspended in the high-temperature heat storage medium in the combustion chamber for combustion. Since the heat storage capacity of the fluidized bed heat storage medium is very large, and the combustion process is carried out in space, the fluidized bed boiler has the characteristics of high burnout rate and good fuel adaptability, and is widely used to process low-quality fuel. However, when dealing with fuels with low calorific value and high volatile content such as hou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/10
Inventor 吴占松李福金王英彪郭亮郑洽余
Owner 清华紫光环保有限公司
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