Seeking help with pipeline cleaning issues
Thread Content
I would appreciate it if fellow sailors could help provide information on pipeline cleaning: including what types of media are used, when cleaning is necessary, and the specific settings for cleaning, etc. Thank you
I think line sweeping is only mentioned in the context of unloading ships; I’ve never heard of it being used for anything else. I’m quite ignorant about this
Generally, for substances with a high freezing point, it is necessary to clean the lines after completion of transportation or when extraction is interrupted; the specific timing depends on the properties of your material~
Whether line cleaning is necessary depends on the properties of your material and the requirements of the processing procedures. For example, with materials that solidify, even if special pipelines are used, if the temperature is low and the pump does not circulate fluid, line cleaning must be carried out after each operation. For example, after unloading from the ship at the dock, in order to determine the amount unloaded, it is usually necessary to transfer all the material in the pipeline into a storage tank. For example, with some specialized pipelines, there is material flowing through them on a daily basis, but during the hot summer months, in order to prevent an increase in pressure within the pipes, it is also necessary to clear the material from inside them. The specific equipment for line cleaning consists of a ball-feeding and retrieving device installed at one (or both) ends of the pipeline; a sponge ball, foam ball, or polyurethane ball is inserted, and compressed air or nitrogen is used to push it to the other end of the pipeline.
Nitrogen is used for general chemical products, compressed air is used for those that tend to polymerize, and steam can be used for oils
It has been purged with both steam and nitrogen; the choice can be determined based on the site conditions.
The fourth floor’s explanation is quite comprehensive; I’d like to add that when loading or unloading ships, if a transfer arm is used for these operations, after the process is complete, the oil inside the transfer arm needs to be transferred onto the ship, after which nitrogen is used to purge the transfer arm. For unloading, nitrogen is used to purge the area on the shore side
The fourth floor’s explanation is quite comprehensive; I’d like to add that when loading or unloading ships, if a transfer arm is used for these operations, after the process is complete, the oil inside the transfer arm needs to be transferred onto the ship, after which nitrogen is used to purge the transfer arm. For unloading, nitrogen is used to purge the area on the shore side