Sealing type of the slurry pump in the catalytic unit
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During this maintenance work, we changed the type of seal used; it has now been replaced with a high-temperature seal. The seal oil used before was of the circulating type, but it has now been changed to an injection-type system. The seal oil currently in use is light diesel produced by the facility itself, although the manufacturer recommends the use of heavier oils such as paraffin oil or heavy diesel. May I ask regarding your facility: 1) What is the type of seal used? 2) What kind of medium is used as seal oil for the slurry pump?
32+53B+61 medium: catalyzed light diesel
This is mostly diesel-sealed, I guess. .
I remember our sealing format was 32+54+62
For high-temperature heavy oil pumps, a cascade mechanical seal should be used; the sealing oil should be a substance that does not vaporize at the temperature of the medium, and both light and heavy diesel can be used
PLAN02+32+54+62: PLAN32 uses catalytic diesel; API62 uses steam
It is recommended to use heavy fuel; using light fuel can lead to vaporization and result in pump cavitation. Just my humble opinion; please feel free to correct me.
plan 32+53B+61
The sealing oil is used to catalyze the production of diesel with a cetane number of around 25