Power station boiler air pre-heater anti-blocking device

A technology for power station boilers and air preheaters, applied in combustion methods, indirect carbon dioxide emission reduction, heat exchange equipment, etc., can solve problems such as large amount of engineering transformation, and achieve the effects of small transformation investment, high feasibility and low operating cost.

Pending Publication Date: 2021-04-09
NORTHWEST BRANCH OF CHINA DATANG CORP SCI & TECH RES INST
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to provide a power plant boiler air preheater anti-blocking device, which solves the problem of large amount of engineering transformation existing in the prior art

Method used

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  • Power station boiler air pre-heater anti-blocking device

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0016] The present invention is a power plant boiler air preheater anti-blocking device, such as figure 1 As shown, it includes the air preheater, the air preheater is connected with the frequency conversion speed regulation module 1, the air preheater is equipped with the exhaust gas temperature monitoring module 2, the frequency conversion speed regulation module 1 is connected with the anti-blocking control module 3, and the anti-blocking control module 3 Connect the exhaust gas temperature monitoring module 2.

[0017] The frequency conversion speed regulation module 1 includes a rotor drive shaft, a frequency converter and a speed sensor are connected to the rotor drive shaft, and both the frequency converter and the speed sensor are connected to the anti-blocking control module 3 .

[0018] The exhaust gas temperature monitoring module...

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Abstract

The invention discloses a power station boiler air pre-heater anti-blocking device which comprises an air pre-heater, a variable frequency speed governing module is connected to the air pre-heater, an exhaust gas temperature monitoring module is arranged on the air pre-heater in a matched mode, the variable frequency speed governing module is connected with an anti-blocking control module, and the anti-blocking control module is connected with the exhaust gas temperature monitoring module. The problem that in the prior art, the engineering reconstruction amount is large is solved.

Description

technical field [0001] The invention belongs to the technical field of power plant boilers, and relates to an anti-blocking device for an air preheater of a power plant boiler. Background technique [0002] After the ultra-low emission transformation of thermal power plants, the original problem of corrosion at the cold end of the air preheater deteriorated sharply due to the escape of ammonia after ammonia injection, resulting in the deposition of ammonium bisulfate and clogging of ash on the heating surface of air preheaters in most thermal power plants, which not only affected The heat exchange effect has caused the differential pressure of the air preheater to rise, seriously affecting the output of the induced draft fan and even affecting the load of the unit, which has caused unfavorable factors for the safe and economical operation of the thermal power plant. [0003] For the problem of air preheater clogging, the current mainstream methods are as follows: (1) Increas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L15/00F23J15/02F23N5/02F28F27/00
CPCF23J15/022F23L15/00F23N5/02F28F27/00F23N2225/10Y02E20/34
Inventor 李超
Owner NORTHWEST BRANCH OF CHINA DATANG CORP SCI & TECH RES INST
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