Crude oil Yield discrepency

[T.R]

Accoring to the lab test data (ASTM D-86) The crude oil having 42% diesel (180-360 cut) and 52% Furnace oil (360-480 cut)& the rest is Naphtha + Loss. After the processing and quantification we get 26% diesel and 66 % Furnace and rest is Naphtha + Loss. Why are we getting the less amount of diesel after processing? what could be the cause of that? Both the quality of products from Lab & the process are same. Can you please explain the cause of that? Thank you.

 

[1503-44]

Diesel collection line is restricting diesel offtake?
Gummed up or inadequate line size for such high diesel percentage.
Was the refinery designed to handle high % of diesel cut and only 6% naptha?
Sounds like the refinery was designed for lighter products and now you're trying to run heavier crudes, possibly with pipe diameter or other limitation on what you can actually draw out of the diesel cut potential and that just gets boiled off. The lab is capturing all the diesel. What actual volumes of diesel and fuel oil do you get from one barrel of crude feed? Percentages of resulting products do not tell the whole story.
You must have the capacity to remove all the components in the stream corresponding to the quantity each component in the feed.

--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."

 

[georgeverghese]

"After the processing and quantification we get 26% diesel and 66 % Furnace and rest is Naphtha + Loss."

Is this processing the same as ASTM D-86 distillation? It has to be the same to enable comparison / verification.

 

[1503-44]

100%

--Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."