General considerations for the shutdown operation of the common shell and tube heat exchanger

- Jul 18, 2019-

The universal shell and tube heat exchanger is a new type of heat exchange equipment, which is widely welcomed by its unique advantages, but we need to maintain and maintain it regularly when using the common shell and tube heat exchanger. , stop it when not in use.

 

After the general-purpose shell-and-tube heat exchanger stops the pump, first slowly close the inlet of the heat medium inlet, then close the inlet valve of the cold medium, and close the outlet valve of the two mediums. Stop the pump before shutting down and cut off the power. If a vent valve is installed in the line, it should be opened.

 

For mediums with high temperature and corrosive media, the universal shell and tube heat exchanger should be emptied as much as possible to avoid scalding and corroding equipment when the heat exchanger is turned on. After the operation is stopped, the internal medium should be cleaned out, especially the corrosive medium, which must be treated by discharging, replacing, cleaning, etc., and care should be taken to prevent corrosive media from being stored in the dead corners of the common shell and tube heat exchanger.

 

Always keep the common shell and tube heat exchanger dry and clean to prevent atmospheric corrosion. In general, dry air does not generally corrode iron alloys such as carbon steel. Corrosion begins only when it is wet, and when metal surface dust, dirt or old corrosion products are present.

 

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