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Reasonable Process Design of Anticorrosive Coating for Heat Exchanger

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Reasonable Process Design of Anticorrosive Coating for Heat Exchanger

Release date:2017-04-26 Author: Click:

    Heat exchanger in the course of the use of more prone to corrosion, resulting in this situation there are many kinds of circumstances, heat exchanger anti-corrosion coating is also a relatively direct means of treatment, in order to avoid this situation, in the Production design, it is best to directly on the steam side of the steam, so you can directly avoid high-speed gas flow through the shell. Shell has a larger flow medium, you can design a number of shell inlet, buffer pressure, the other should be set to prevent the plate, reducing the high-speed fluid on the equipment caused by erosion erosion.

    In order to avoid the use of residual liquid and sediment retention, welding as much as possible using double-sided butt welding and continuous welding, to avoid welding and spot welding. In the welding process should be based on practical experience, causing stress corrosion cracking stress is mainly residual stress, and residual stress is mainly caused by cold processing and welding caused by internal stress.

    Heat treatment of cold workpieces and weldments helps to eliminate residual stresses and thus helps prevent stress corrosion. Often used stress relief heat treatment to eliminate residual stress or other methods to eliminate residual stress, such as water pressure test, vibration aging and hammer and so on. In addition, the tube lifting must be used nylon belt to ensure that the metal surface is flat, no scratches, to smooth into the shell. Heat exchanger anti-corrosion coating is also a relatively good means of prevention, but also can directly solve the problem of an effective way.


Related tags:Desulfurizationanticorrosivecoating

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