Organic working medium boiler for combustion of coal-fired fluidized bed

A fluidized bed, organic technology, applied in the field of industrial boilers, can solve the problems of poor coal adaptability, small load adjustment range, and high operating costs of boilers, achieve simple and reliable auxiliary supporting systems, reduce NOx emissions, and good load regulation performance. Effect

Inactive Publication Date: 2014-01-15
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional organic working fluid boilers adopt layer combustion or chamber combustion. The main problems are: the maximum combustion temperature is above 1450°C, and it is easy to coke; the ignition conditions are poor, and the combustion is unstable; the boiler coal type is poor i

Method used

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  • Organic working medium boiler for combustion of coal-fired fluidized bed
  • Organic working medium boiler for combustion of coal-fired fluidized bed
  • Organic working medium boiler for combustion of coal-fired fluidized bed

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Embodiment Construction

[0020] Such as figure 1 As shown, the coal-fired fluidized bed combustion organic working medium boiler provided by the preferred embodiment of the present invention includes: wind box 1, air distribution plate 2, dense phase area 3, fuel feeding port 4, dilute phase area 5, vortex Separate the burnout device 6, the tail convection heating surface part 7, and the outlet flue 8.

[0021] The coal used in the organic working medium boiler of the present invention needs to be crushed into smaller particles in advance, and the particle size of the coal particles should be at least less than 20mm. In order to achieve better combustion effect, it is best to ensure that the particle size is less than 10mm.

[0022] Such as figure 1 As shown, the blower blows air into the air box 1 and enters the combustion chamber through the air distribution plate 2 to participate in fuel combustion; the coal particles pass through the fuel feeding port 4 arranged on the upper part of the combustio...

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Abstract

The invention discloses an organic working medium boiler for combustion of a coal-fired fluidized bed, which comprises an air distribution device, a combustion chamber, a vortex separation burnout device and a tail convection heating surface part. The combustion chamber is divided into a dense-phase zone and a lean-phase zone; the air distribution device is provided with an air distribution plate; the air distribution plate is V-shaped; the air distribution plate is provided with vent holes; the vent holes are sequentially formed from the middle part of the air distribution plate to the edge, and the areas of the vent holes are gradually reduced; the dense-phase zone adopts an inverted ladder stand shaped structure; a return flow zone of the dense-phase zone is provided with a buried pipe; a water-cooled wall is arranged around the lean-phase zone; the vortex separation burnout device is arranged at the upper part of the lean-phase zone; the tail convection heating surface part is arranged at the rear part of the vortex separation burnout device; the organic working medium boiler uses coal fuel. According to the invention, coal particles are used for replacing coal water slurry; a pulping process is omitted; use cost of the organic working medium boiler is reduced.

Description

technical field [0001] The invention relates to an industrial boiler, in particular to a coal-fired fluidized bed combustion organic working medium boiler. Background technique [0002] Organic working medium boilers can obtain higher working temperature under lower operating pressure, and have the technical characteristics of low pressure and high temperature. Compared with steam heating, organic working medium has the advantages of uniform heating, simple operation, safety and environmental protection, and energy saving. , high precision temperature control, low operating pressure and other advantages. Therefore, in modern industrial production, organic working fluid has been widely used as a heat transfer medium. Traditional organic working fluid boilers adopt layer combustion or chamber combustion. The main problems are: the maximum combustion temperature is above 1450°C, and it is easy to coke; the ignition conditions are poor, and the combustion is unstable; the boile...

Claims

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Application Information

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IPC IPC(8): F23C10/00F23C10/18F23C10/20
Inventor 刘建国刘加勋韩向新姜秀民
Owner SHANGHAI JIAO TONG UNIV
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