Q and A
Q & A
> Storage Tanks and Terminals
Our naphtha sample from crude distillation unit went off on chloride content with result showing 1.3 ppm.So we checked organic chloride in our crude tank. The result showed presence of organic chloride in that particular crude tank. So that tank is kept blocked and we resumed to our normal operation.
We did many brain-stroming and looked for solution.
Can the experts in this forum please suggest how to process this crude having high organic chloride. Is there any chemical treatment available. How can this problem be solved?
Naphtha vapours are observed at manway lid of roof top when its opened . Mild naphtha vapours are also observed at roof drain of the storage tank when its opened. Generally roof drain of the storage tank is kept in open condition only . The storage tank is of Internal Floating Roof type . Tank safe height is 10.75m . Generally tank height is maintained at 9 m or lower. Tank outlet Temperature is between 36 to 42deg. Let me know why naphtha vapours are emanating from roof tanks and roof drains. I dont think there is swivel joint leak .
What are the safety precautions that must always be taken before entering the Confined Space Work in order to install the floating suction inside the tank?
High content of solid particles in crude oil or Delayed Coker feed can cause accelerated fouling in the furnace.
Has anyone experience on how to measure solid particles concentration and particle size distribution in crude and/or vacuum residue? I have seen the use of laser difraction or particle counter for other products (kerosene, lubricants, etc) to measure both total content and particle size, but I am not sure if this could be succesfully applied to vacuum residue.
What is the maximum solid concentration recommended to avoid fouling issues?
What is the maximum solid particle size recommended?
I have been entrusted with the task of assigning line numbers to refinery circuits, not something of which I have any experience or training. Are there any industry standard numbering conventions?
How do we calculate the bblpd to mmtpa if we have one month shutdown once in a year?
How do you estimate the approx. quantity of sludge in a crude tank before handing over for Tank Cleaning?
What is the best way to re-process Fuel Oil Blend Stock (FOBS) or waste that contains 20-30% water and sediments?
Any recommended third party company doing this job?
Any way to sell such material?
In our plant we have three floating roof tanks, it's receiving crude oil from the field and the same pump out the oil to the terminal for export. The production still the same no change, but when we stopped the shipping pumps to the terminal next day the production decrease. What accounts for this?
Is a microbiological assay for storage tanks necessary?
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