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Fluidized bed boiler combustion room with anti-abrasion structure

A fluidized bed boiler and combustion chamber technology, which is applied to fluidized bed combustion equipment, combustion chambers, and fuels burned in a molten state, can solve problems such as wear and tear, and achieve the effect of solving the effect of anti-wear, convenient maintenance, Good anti-wear effect

Inactive Publication Date: 2006-04-19
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the working condition deviates from the design parameters during operation, the structure and rotation space of the vortex will change, sometimes exceeding the reserved vortex rotation space of the design, so in practice, wear and burst tubes often occur

Method used

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  • Fluidized bed boiler combustion room with anti-abrasion structure
  • Fluidized bed boiler combustion room with anti-abrasion structure
  • Fluidized bed boiler combustion room with anti-abrasion structure

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Embodiment Construction

[0018] Work process of the present invention and best implementation mode and embodiment are described in detail below in conjunction with accompanying drawing:

[0019] In a fluidized bed boiler, the solid material carried by the upward flow of the airflow reaches a certain height, and the particles move to the side wall area and agglomerate. Agglomerates of particles settle where the cross-section begins to change, forming eddies and causing wear. In the area where the eddy current occurs, the regularly arranged cutting vortex slices are welded, and the eddy current is completely destroyed, which can effectively prevent wear. According to this principle, the present invention destroys the eddy current by arranging the cutting vortex slices. image 3 It is an embodiment of the anti-wear structure of the cut scroll used in the present invention. Some vortex slices 5 are welded on the wall of the water-cooled wall tube 3 at the junction of the refractory material 2 at the bot...

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PUM

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Abstract

The invention is a fluidized boiler combustion room with a grind resisting structure, which relates to a structure design of a fluidized boiler combustion room. The technology is: some turbine tangible piece are arranged in lengthwise on the connection place of the heat bearing surface between the furnace bottom fire resisting material and water cold wall; through the turbine tangible piece grind resisting structure can destroy and restrain the gas turbine on the connection position of the fire resisting material and heat bearing surface, thus it solves the affection of the changed load to the effect of grind resisting, when the decreased flow quantity and fluidized wind speed are changed, the grind resisting effect is excellent. At the same time, compared with current technology, the process is simple, convenient, and the lifespan is long.

Description

technical field [0001] The invention relates to a combustion device, in particular to a structural design of a combustion chamber of a fluidized bed boiler. Background technique [0002] The lower part of the combustion chamber of a fluidized bed boiler is usually variable in cross-section to meet the needs of staged air supply and constant-velocity air distribution. The lower part of the fluidized bed boiler is a dense-phase area. In order to prevent large-scale wear and tear, refractory materials need to be laid at a certain height in the lower part to protect the heating surface of the furnace. The air flow carries certain solid particles during the upward flow from the air distribution plate. Most of these particles will fall back after rising to a certain height. Wear and tear occurs. [0003] At present, the usual practice in the prior art is to spray wear-resistant alloy coating 2 on the part of the heating surface above the junction of the refractory material 1 and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F22B17/16F23C10/18F23M5/00F23C3/00
Inventor 吕俊复赵新木岳光溪刘青
Owner TSINGHUA UNIV