Part 10: Resins and Polymers in Crude Oil Refining

Posted by Chemical Development Team on Jun 8, 2016 7:30:00 AM



As we have been discussing petroleum refining processes and the various problems that are encountered during decontamination and shut-down preparations, we have taken side trips to talk of related subjects such as pyrophoric iron, degassing and other matters. One of these side discussions was about asphaltenes. Two other constituents of crude oil that have impact on petroleum refining operations are resins and polymers.

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Topics: Degassing, Decontaminanation, Polymers, Resins

Part 8: Decontamination of the Crude Unit – The Vacuum Tower

Posted by Chemical Development Team on Apr 5, 2016 7:00:00 AM



Upon leaving the desalter, the crude oil will go to a crude processing unit where the first actual separations will take place. The feed charge will pass through the preheat bundles, generally on the shellside, where it will pick-up heat from an already processed stream. These bundles are where one type of refinery coke is formed. The temperatures are not high enough to form true carbon, but the deposit will still be extremely hard to remove chemically.


In previous discussions we have discussed this problem and also identified that technology has advanced so that very effective chemical cleaning of these “coke” (really asphaltene) deposits can be successfully accomplished in-place while off-line. Quite frankly, better outcomes are possible if operations would chemically clean these exchangers more often and not wait until the exchangers are nearly plugged solid.

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Topics: Decontaminanation, Crude Unit, asphaltene

Part 7: Decontamination of the Crude Unit - Asphaltenes

Posted by Chemical Development Team on Feb 8, 2016 8:20:04 AM



As we have spoken about decontamination of the crude distillation unit we have discussed tank cleaning operations, how to address troublesome desalters and general degassing issues. Throughout these talks, there has been a common theme in the background. And, what is that? More often than not, the refiner is plagued with fouling from heavy organic deposits. Typically, these compounds are asphaltenes, waxes, and resins. Why is this so?

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Topics: Decontaminanation, asphaltene

Part 5: Decontamination of the Crude Unit

Posted by Chemical Development Team on Nov 10, 2015 1:32:49 PM



Part 5 in the series on how the chemical industry is solving challenges in the industrial sector.

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Topics: Degassing, Decontaminanation, Crude Unit

“Degassing” truly degassing or something else?

Posted by Chemical Development Team on Jul 20, 2015 9:00:00 AM


“Degassing,” a term frequently used in the petroleum processing and production industries, is the process of evacuating hazardous vapors from the interior of processing vessels and piping.


These hazardous vapors are typically volatilized hydrocarbon gases and hydrogen sulfide, among others. The process of degassing does not include the removal of residual organic or inorganic solids or scales—only vapors.

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Topics: Degassing, Decontaminanation


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