Diesel corrosion

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ZMiller
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Diesel corrosion

Post by ZMiller » Thu Sep 13, 2012 3:25 am

There really is a simple solution though.
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dieselengine9
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Diesel corrosion

Post by dieselengine9 » Thu Sep 13, 2012 7:55 am

quote:Originally posted by ZMiller


There really is a simple solution though.





[:0]





that is :?: :?: :?:

ZMiller
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Diesel corrosion

Post by ZMiller » Thu Sep 13, 2012 1:06 pm

Let me get rich(er) first. I'll lay it out for you in Las Vegas. Your going aren't you?
When you are dead it's likely you won't know it. It could be difficult for others. It's the same if you are stupid.
"Tact is the ability to tell someone to go to Hell in a way that they will begin looking forward to the trip"

ZMiller
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Diesel corrosion

Post by ZMiller » Sat Sep 15, 2012 3:48 am

Motiva already has part of the formulation answer. Can anyone guess what it might be?
When you are dead it's likely you won't know it. It could be difficult for others. It's the same if you are stupid.
"Tact is the ability to tell someone to go to Hell in a way that they will begin looking forward to the trip"

merkfalc
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Diesel corrosion

Post by merkfalc » Mon Jan 28, 2013 1:56 am

Just wanted to thank y'all for posting this. There was a lot of good information in there.


pfeinstein
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Diesel corrosion

Post by pfeinstein » Thu Mar 07, 2013 11:22 pm

We came across something similar on a piping job two years ago. Leakage was in a valve seat and medium was acetic acid. We had to replace the old material with a zirconium seat to seal the seat. The leaking acid was causing all sorts of system-wide problems.
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ZMiller
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Diesel corrosion

Post by ZMiller » Thu Jan 09, 2014 8:33 am

Who might be interested in diesel storage tank corrosion test site data?
When you are dead it's likely you won't know it. It could be difficult for others. It's the same if you are stupid.
"Tact is the ability to tell someone to go to Hell in a way that they will begin looking forward to the trip"

tleaf
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Diesel corrosion

Post by tleaf » Thu Jan 09, 2014 8:48 am

Hey, I would!

Our problems have decreased somewhat, with Gamma Jetting, etc., but I always want to learn more.
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ZMiller
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Diesel corrosion

Post by ZMiller » Sun Mar 16, 2014 1:23 pm

In the refining of petroleum products, such as crude oil, hydrochloric acid is generated which can cause high corrosion rates on the distillation unit metallurgy, including the overhead system. Neutralizing amines are added to the overhead system to neutralize the hydrochloric acid (HCl) and make it less corrosive. However, excess amines can form salts that will also lead to corrosion. Consequently, the refining industry has, for many years, suffered from amine-hydrochloride salt deposition in crude oil distillation towers, overhead and pumparound circuits. The problem occurs when ammonia and/or amines are present in the desalted crude. These amines react with hydrochloric acid and other acids while ascending the crude tower and deposit as corrosive salts in the tower and the top pumparound equipment. The amines can be present from several sources, including but not necessarily limited to, crude oil (e.g. hydrogen sulfide (H2S) scavenger chemicals--amines added to neutralize the corrosive and other deleterious effects of H2S), slop oil (frequently containing gas scrubbing unit amines) and desalter wash water (often composed of overhead sour water containing amine neutralizer). The problem has worsened in recent years in part due to higher crude salt content, which yields higher HCl contents as a byproduct and in turn requires more overhead neutralizer, consequently both salt reactants are present in higher quantities at the process level and down stream. Additionally, market conditions have encouraged many crude towers to be operated at a colder top temperature, which further encourages salt formation in towers. Longer run cycles between turnarounds have caused problem resolution to become a priority.



Additional changes are foreseen which are likely to make the problem even worse. The economic incentive to use discounted crudes has led to a general deterioration of crude quality, and further, more plants are attempting to maximize internal water reuse. A recent effort to design new amine neutralizer options for overhead systems does not offer relief in all cases, because such amines will not help in systems where salts are present from ammonia or tramp amines entering the system with crude oil or slop oil.



Clearly, amine salting in towers has become a bigger problem in recent years, and future trends indicate continuation of the problem.
When you are dead it's likely you won't know it. It could be difficult for others. It's the same if you are stupid.
"Tact is the ability to tell someone to go to Hell in a way that they will begin looking forward to the trip"

ZMiller
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Diesel corrosion

Post by ZMiller » Thu Apr 03, 2014 12:39 pm

Diesel test site corrosion data is now available. Some very interesting scenarios presented themselves during the test and collection of data. While some conclusions pointed to problem fuel there were some seemingly simple maintenance issue causes that came to light. The culprit and primary corrosion constitute combining with some relatively simple maintenance issues has been found to be low PH values in the empty space of the tank. The acidic values in the tanks empty space atmosphere during the test cycles were somewhat easier to control than first thought. Simple depending on how one looks at the tanks size and throughput. There are a number of ways to protect and prevent corrosion issues in diesel and DEF fuel and additive storage tanks. The concluding report is in final draft scheduled for completion early next week. Those truly concerned or seeking possible enlightenment e-mail me a contact address and who you are and I'll forward a copy of the report. zmiller@orvr.us
When you are dead it's likely you won't know it. It could be difficult for others. It's the same if you are stupid.
"Tact is the ability to tell someone to go to Hell in a way that they will begin looking forward to the trip"

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