How to handle chemical pipelines that have not been in use for a long time
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How to handle chemical pipelines that have not been in use for a long time
Rinse and replace thoroughly; it is best to protect it with an inert gas
It depends on what chemical it was originally; acids and bases are different
Nitrogen pressure retention for corrosion prevention and safety protection
Depending on the specific medium, carry out displacement (paying attention to safety during displacement of special media), dry it, and purge with N2
The second floor is the correct answer. It should be noted that the pressure of the inert gas needs to be checked regularly, and it must be replenished in a timely manner if the pressure drops too low
First, remove the material, drain it completely, and purge or pass balls through it
Consider the medium and the temperature. For example, the pipeline can be kept full of water in summer, while nitrogen protection is required in winter. For other pipelines, nitrogen protection can be used, while ordinary white steel pipelines generally do not require any special treatment