A device for improving wear of low temperature economizer

Abstract

The invention relates to a device for improving the wear of a low-temperature economizer, which includes a boiler, denitrification equipment, an air preheater, a dust collector, an automatic monitoring ammonia injection system, a low-temperature economizer, and a low-temperature electric precipitator; wherein, the The boiler, denitrification equipment, and air preheater are connected in turn through pipelines. A dust collector is installed between the air preheater and the low-temperature economizer through pipelines. The low-temperature economizer and the low-temperature electric precipitator are connected through pipelines. The low-temperature economizer is connected through pipelines. An automatic monitoring ammonia injection system is connected to the inlet of the coal device, and the automatic monitoring ammonia injection system provides ammonia gas and air into the low-temperature economizer through automatic adjustment. This equipment can reduce the particles entering the low-temperature economizer, thereby weakening the wear of the serpentine tube in the low-temperature economizer; it can control the acid gas (SO) in the low-temperature economizer. 3 ), so as to ensure the high-efficiency operation of the low-temperature electrostatic precipitator and at the same time reduce the corrosion of the low-temperature economizer by acidic substances as much as possible.

Description

Technical field [0001] The invention relates to a device for improving the wear of a low-temperature economizer, and belongs to the technical field of equipment. Background technique [0002] At present, the country’s thermal power generation accounts for about 75% of the total power generation. As people pay more and more attention to environmental protection, boiler electric precipitators need to find breakthroughs and improvements in air pollution control. Low and low temperature electric dust removal technology is one of the effective technologies to realize energy saving and emission reduction in coal-fired power plants. In recent years, low and low temperature electric dust removal technology has begun to be applied. Low and low temperature electric dust removal technology can not only improve the efficiency of electric dust removal and meet low emission requirements, but also reduce power consumption, reduce the specifications of downstream equipment, and remove most of th...

AI Technical Summary

Problems solved by technology

And because the temperature of the flue gas has been reduced to below the acid dew point when the flue gas passes through the low-temperature economizer section, most of the SO in the flue gas 3 Condensate and precipitate, forming corrosive sulfuric acid mist, which adheres to the heat exchange tube of the low-temperature economizer, and then corrodes the heat exchange tube

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