Fluidized bed combustion furnace and control method thereof

A technology of fluidized bed and temperature control method, applied in the field of fluidized bed combustion furnace and its control

Active Publication Date: 2011-05-04
IND TECH RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, usually the primary air volume distribution head has a minimum amount (ie fluidization number, U 0 /U mf , where U 0 :...

Method used

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  • Fluidized bed combustion furnace and control method thereof
  • Fluidized bed combustion furnace and control method thereof
  • Fluidized bed combustion furnace and control method thereof

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Embodiment Construction

[0071] In order to have a further cognition and understanding of the features, purpose and functions of the present invention, the relevant detailed structure and design concept of the device of the present invention will be described below so that the characteristics of the present invention can be understood. The detailed description is as follows :

[0072] see figure 2 As shown, this figure is a schematic diagram of an embodiment of the fluidized bed combustion furnace of the present invention. The fluidized bed combustion furnace 2 has a furnace body 20, and a gas distributor 21 is arranged in the furnace body 20 to divide the furnace body 20 into two areas, which are respectively the freeboard area 91 and the wind box 92, wherein the gas A bed of sand 22 is laid on the freeboard area 91 above the distributor 21, and the bed of sand 22 can be quartz sand, but not limited thereto. There is also a fuel supply opening 200 on the furnace body 20 to provide fuel, such as wa...

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Abstract

The invention provides a fluidized bed combustion furnace and a control method thereof. The fluidized bed combustion furnace is characterized in that: a gas distributor is arranged in the furnace body, a first air distribution head and a second air distribution head are arranged on the gas distributor, and each of the first air distribution head and the second air distribution head can supply a fluidized gas to a bed material, wherein the second air distribution head can supply liquid to the bed material. The control method is characterized in that: whether the liquid is injected to the bed material by the second air distribution head is determined according to the temperature of the bed material during loading or unloading of the fluidized bed combustion furnace so as to absorb heat in the bed material to reduce the temperature of the bed material, prevent the bed material from being burnt due to over high temperature and stabilize the operation of the fluidized bed combustion furnace.

Description

technical field [0001] The invention relates to a fluidized bed combustion furnace, in particular to a fluidized bed combustion furnace capable of detecting bed sand temperature to timely provide cooling to avoid bed sand sintering and its control method. Background technique [0002] The demand for energy is intense. In addition to traditional fossil fuels, biomass and waste are considered to be important sources of fuel. Unlike traditional coal, which is rich in high fixed carbon, biomass and waste often contain high volatile matter. Among the combustion furnaces with solid fuel as the main fuel, the fluidized bed combustion furnace has a higher turn down ratio to meet the actual energy demand on site, so it is gradually widely used. However, when the fluidized bed combustion furnace is burning high volatile fuels such as biomass and waste, if it is often faced with operational requirements such as loading and unloading, different biomass feeds, etc., as well as during sh...

Claims

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Application Information

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IPC IPC(8): F23C10/00F23C10/18F23C10/20F23C10/28
Inventor 万皓鹏张莹玺杨炽森祝经益李文涌陈嘉元李宏台
Owner IND TECH RES INST
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