System and method for improving heat efficiency of boiler and removing scale and oxide skin of boiler

Abstract

The invention discloses a system and method for improving the heat efficiency of a boiler and removing scale and oxide skin of the boiler, and relates to the field of scale removal of boilers. The system for improving the heat efficiency of the boiler and removing scale and oxide skin of the boiler comprises a feeding chamber. The feeding chamber is connected with a second pipeline, and a pump is arranged on the second pipeline. The second pipeline communicates with a first pipeline, and the first pipeline is connected with the boiler. The boiler is connected with a steam pocket, and the steam pocket is connected with a down pipe. The first pipeline is used for adding boiler water, and the feeding chamber is used for adding inert solid particles. According to the system and method for improving the heat efficiency of the boiler and removing scale and oxide skin of the boiler, the inert solid particles are added into the boiler water, online scale prevention and removal of scale and oxide skin of the boiler are achieved by means of the characteristics of the inert solid particles, and thus the heat exchange efficiency of the boiler is improved.

Description

technical field [0001] The invention relates to the field of boiler descaling, in particular to a system and method for improving boiler thermal efficiency for descaling and descaling. Background technique [0002] In thermal power units, scale shedding of boiler tubes is a relatively common problem. Boiler tube burst accidents caused by scale shedding and blockage are the most likely type of accidents in thermal power plant boiler operation. During the heat exchange process of the boiler tube, the precipitated substances are bonded to the heating surface of the boiler to form scale, and the higher the temperature, the easier it is to form hard scale. The thermal conductivity of scale is very poor, and its thermal conductivity is several tens to hundreds of times smaller than that of the boiler steel plate, so the scaling of the boiler will seriously hinder the heat transfer. [0003] At present, the furnace tubes of power plant boilers do not use any online descaling, anti...

AI Technical Summary

Problems solved by technology

The thermal conductivity of scale is very poor, and its thermal conductivity is several tens to hundreds of times smaller than that of the boiler steel plate, so the scaling of the boiler will seriously hinder the heat transfer.

[0003] At present, the furnace tubes of power plant boilers do not use any online descaling, anti-scaling, and descaling methods or devices. When the heat transfer effect of the furnace tubes is reduced due to fouling or scale blockage, the boiler is generally shut down to open the boiler, and the blockage location is determined manually. Cut the furnace tube at the blocked part to remove it. After the cleaning is completed, weld the furnace tube

Manual descaling and descaling is time-consuming and labor-intensive, increasing labor costs, and at the same time, downtime processing will also affect production

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