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Fluidized bed boiler with multifunctional cyclone separator

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

Inactive Publication Date: 2005-06-15
清华紫光环保有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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] A fluidized bed boiler with a 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 boiler combustion chamber, and the fluidized bed boiler combustion chamber includes a bottom of the combustion chamber The air distribution plate 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 is arranged on the outer cyclone Exhaust cylinder 3 and conical ash bin 4 in the cylinder. 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...

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Abstract

The utility model relates to a fluidized-bed boiler with a multifunctional cyclone separator, relating to a fluidized-bed combustion equipment for burning fuel with low calorific value and high volatile content. The present invention adopts the cyclone separator with dual functions of separation and burn-out of volatile matter. The gas burnout air sleeve between the cylinders; the gas burnout air port is provided on the inlet section, and the hot air inlet is provided on the top of the gas burnout air sleeve. The invention expands the combustion space of the fluidized bed boiler from the traditional combustion chamber to the separator, which not only prolongs the high-temperature oxygen-enrichment process of the flue gas, but also does not need to increase the boiler height excessively, which facilitates the direct transformation of the existing fluidized bed boiler Into boilers burning high volatile fuels. It can fully meet the combustion requirements of high volatile fuels, improve combustion efficiency, and reduce pollution emissions of organic combustible components in boiler flue gas.

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 Patents(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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