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A supercritical CO with uniform heat load 2 Contrasted Boiler Furnace Structure

A furnace body structure, supercritical technology, applied in lighting and heating equipment, burning with multiple fuels, burning with lump fuel and powder fuel, etc. Unequal problems, to ensure safe and economical operation, prolong service life, and avoid overheating

Active Publication Date: 2020-07-17
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Supercritical CO 2 The heat transfer performance of the working medium in the boiler is lower than that of conventional steam boilers, and the supercritical CO 2 The heat absorption temperature of the Brayton cycle is higher than that of conventional steam boilers, so it is difficult to arrange supercritical CO in existing boilers 2 heating surface
Solve the uneven distribution of thermal load along the axial and longitudinal directions of the conventional furnace, which can effectively solve the problem of supercritical CO 2 The problem of overheating of boiler heating surface
The furnace structure in the prior art can guarantee supercritical CO to a certain extent 2 Boiler furnace safety, however, the current engineering problem is the need to be more flexible to solve the problem of uneven thermal load distribution along the axial and longitudinal directions of conventional furnaces

Method used

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  • A supercritical CO with uniform heat load <sub>2</sub> Contrasted Boiler Furnace Structure
  • A supercritical CO with uniform heat load <sub>2</sub> Contrasted Boiler Furnace Structure
  • A supercritical CO with uniform heat load <sub>2</sub> Contrasted Boiler Furnace Structure

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Embodiment 1

[0039] Such as figure 2As shown, in this embodiment, a plurality of high-power burners 6 and a plurality of low-power burners 7 on the front wall 2 or the rear wall 3 are alternately arranged in pairs. This design structure is ingenious, which can ensure that the heat load of the furnace side wall in the horizontal direction of the combustion zone of the boiler furnace 1 is evenly distributed, effectively solving the problem that the heat load gradually increases from both sides to the middle of the combustion zone of the boiler furnace 1 in the horizontal direction, and extending the boiler side. The service life of the cooling wall at the corresponding position on the wall. In addition, the high-power burner 6 and the low-power burner 7 are installed on the side wall of the boiler furnace 1 in a manner conceivable by those skilled in the art, such as bolt installation or welding.

Embodiment 2

[0041] Such as image 3 As shown, in this embodiment, a plurality of high-power burners 6 and a plurality of low-power burners 7 on the front wall 2 or rear wall 3, every other high-power burner 6 is provided with two low-power burners 7 ; The high-power burner 6 and the low-power burner 7 are installed on the side wall of the boiler furnace 1 in a manner conceivable by those of ordinary skill in the art, such as bolt installation or welding. This design structure is ingenious, which can ensure that the heat load of the furnace side wall in the horizontal direction of the combustion zone of the boiler furnace 1 is evenly distributed, effectively solving the problem that the heat load gradually increases from both sides to the middle of the combustion zone of the boiler furnace 1 in the horizontal direction, and extending the boiler side. The service life of the cooling wall at the corresponding position on the wall.

Embodiment 3

[0043] Such as Figure 4 As shown, in this embodiment, a plurality of high-power burners 6 and a plurality of low-power burners 7 on the front wall 2 or rear wall 3 are provided with two high-power burners 6 every other low-power burner 7 . The high-power burner 6 and the low-power burner 7 are installed on the side wall of the boiler furnace 1 in a manner conceivable by those skilled in the art, such as bolt installation or welding. This design structure is ingenious, which can ensure that the heat load of the furnace side wall in the horizontal direction of the combustion zone of the boiler furnace 1 is evenly distributed, effectively solving the problem that the heat load gradually increases from both sides to the middle of the combustion zone of the boiler furnace 1 in the horizontal direction, and extending the boiler side. The service life of the cooling wall at the corresponding position on the wall.

[0044] In the present invention, the boiler furnace 1 is a square ...

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Abstract

The invention relates to a supercritical CO2 hedging type boiler body structure with uniform heat loads. The supercritical CO2 hedging type boiler body structure with the uniform heat loads comprisesa boiler furnace, multiple low-power burner groups and multiple mixed burner groups are alternately arranged on a front wall and a back wall of the boiler furnace at intervals in the height directionof the boiler furnace, and the burner groups on the front wall and the back wall are symmetrically arranged about the axis of the boiler furnace; and a left wall and a right wall of the boiler furnaceare each provided with multiple side wall adhering air ports corresponding to the mixed burner groups one to one, and the side wall adhering air ports, located at the same height, of the left wall and the right wall are symmetrically arranged. The supercritical CO2 hedging type boiler body structure with the uniform heat loads has the beneficial effects that design is reasonable, burners are skillfully arranged in the boiler furnace, therefore, the heat loads in the boiler furnace are uniformly distributed in the axial direction and radial direction, the condition that the heated surface of the boiler furnace is overheated is avoided, the service life of a cooling wall is greatly prolonged, and safe and economical running of a boiler is guaranteed.

Description

technical field [0001] The invention relates to the technical field of coal-fired boiler operation, in particular to a supercritical CO boiler with uniform heat load. 2 Contrasted boiler furnace body structure. Background technique [0002] Supercritical CO 2 The heat transfer performance of the working medium in the boiler is lower than that of conventional steam boilers, and the supercritical CO 2 The heat absorption temperature of the Brayton cycle is higher than that of conventional steam boilers, so it is difficult to arrange supercritical CO in existing boilers 2 heating surface. Solve the uneven distribution of thermal load along the axial and longitudinal directions of the conventional furnace, which can effectively solve the problem of supercritical CO 2 The problem of overheating of the heating surface of the boiler. The furnace structure in the prior art can guarantee supercritical CO to a certain extent 2 Boiler furnace safety, however, is currently facing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C5/28
CPCF23C5/28
Inventor 向军周敬朱萌胡松苏胜汪一许凯徐俊何立模韩亨达凌鹏李艾书
Owner HUAZHONG UNIV OF SCI & TECH