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Boiler air heat exchange device

A technology of heat exchange device and air preheater, applied in the field of boiler air heating, can solve problems such as adhesion and blockage of ammonium hydrogen sulfate

Pending Publication Date: 2021-06-29
FUJIAN LONGKING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a boiler air heat exchange device to solve the problem of ammonium bisulfate adhesion and blockage in the air preheater and ensure the stability of heat exchange

Method used

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  • Boiler air heat exchange device
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  • Boiler air heat exchange device

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Embodiment Construction

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Please refer to figure 1 and figure 2 , figure 1 It is a structural schematic diagram of a specific embodiment of the boiler air heat exchange device provided by the present invention; figure 2 Schematic diagram of the heat pipe heat exchanger.

[0025] The blockage of the air preheater 1 is mainly caused by the deposition of liquid ammonium bisulfate, which mainly exists in the middle and low temperature section of the air preheater 1, while the formation of liquid ammonium bisulfate and the SO in the flue gas 3 Concentration, NH 3 Concentration, flue gas temperature, heating surface temperature of air preheater 1, etc. are related.

[0026] At present, there is a judgment index for the deposition adhesion ...

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Abstract

The invention discloses a boiler air heat exchange device which comprises air ducts and an air preheater (1), the air duct located at one side of the air preheater (1) and connected with a fan is a cold air duct (22), the air duct located at the other side of the air preheater (1) and connected with a boiler or powder making equipment is a hot air duct (21), the hot air duct (21) and the cold air duct (22) communicate with each other through an air branch bin of the air preheater (1), the device further comprises at least one heat pipe heat exchanger (4), the evaporation section of the heat pipe heat exchanger (4) is located in the hot air duct (21), and the condensation section of the heat pipe heat exchanger (4) is located in the cold air duct (22). According to the boiler air heat exchange device, the problem that the air preheater (1) is blocked due to adhesion of ammonium bisulfate can be solved, and the heat exchange stability is guaranteed.

Description

technical field [0001] The invention relates to the technical field of boiler air heating, in particular to a boiler air heat exchange device. Background technique [0002] The air preheater is a heat exchanger that uses the waste heat of flue gas at the tail of the boiler to heat the air needed for boiler combustion. Fire and burning conditions. [0003] At present, the commonly used air preheater is a rotary air preheater equipped with plate heat exchange elements. Its interior is divided into a flue gas sub-bin and an air sub-bin. The heat exchange is carried out in the warehouse and the air sub-chamber. When the heat exchange element is transferred to the flue gas compartment, it absorbs the heat contained in the hot flue gas flowing through the flue gas compartment, and the temperature of the flue gas decreases; when the heat exchange element rotates to the air compartment, it releases the heat to the air, The temperature of the air rises, and the cycle goes on like ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L15/00
CPCF23L15/00Y02E20/34
Inventor 高松王正阳李挺罗如生朱填美陈晓雷陈建国廖增安程鸿谢庆亮王昕
Owner FUJIAN LONGKING