Discussion on the reasons for flushing the feed filter in the hydrogenation unit
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Changes in crude oil varieties； Crude oil switching tank ； Oil product cutting adjustment (minor impact) ； The oil at the top layer of the intermediate tank oxidizes and deteriorates, forming complex macromolecules ； The crude oil contains water, and the vaporized water can cause fluctuations in pressure drop ； Fluctuations in feed cause impurities from dead corners in pipelines and equipment to be carried out ； Coking wax oil contains many impurity particles ； …… Please, fellow sailors, discuss and add more.
Are automatic backwash pipes useful? The experiences I’ve had with them have all been poor. There is a lot of waste, and backwashing occurs frequently. Turn your head quickly
Then it’s still because the precision of the filter element is not sufficient~~~
When a pressure difference is created, natural flushing occurs. Is the poster trying to say the reason for frequent rinsing? The upstream unit switches to the pump that supplies material to this unit, bringing impurities accumulated in the standby pump along with it. This device switches the feed pressure pump, carrying impurities deposited in the standby pump to the filter. The differential pressure gauge indicates a fault
Everyone uses the same filter elements, which employ wedge-shaped wire mesh for filtration; it is said that the precision is sufficient, and there are many successful applications of this technology. In fact, even turning the head is very fast. Those who work in oil refineries have money and are willing to pay more, but expensive doesn’t necessarily mean good. The key is choosing the filtering method
1. There is also coker diesel that contains coke powder. 2. Catalytic diesel contains a catalyst
Mainly, the filtration area was chosen to be too small; in other words, the flow rate was set too high, which results in an increased frequency of backwashing
More importantly, it cannot remove the gelatinous substances inside, and this is why the reactor tilts quickly
If coking feedstock is used as the raw material, it will cause frequent backwashing.
Glue-like substances, mechanical impurities, coke dust; insufficient filtration precision at the upstream stage; deterioration and contamination of the oil in the storage tanks; there are many such factors·~~
This post was last edited by sdwfsgyykai on 2018-7-11 16:04. Please contact via private message!