Crude oil blending in atmospheric and vacuum distillation units
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Our company’s atmospheric and vacuum distillation units process more than a dozen types of crude oil, including Russian crude, Saudi light crude, medium crude, heavy crude, Qatari onshore crude, Panyu crude, and condensate. Due to inventory issues, the blending of these crudes is highly uneven, which makes it difficult to operate the various distillation columns. At present, we use a blending method that involves processing the heavier crudes first and then the lighter ones, followed by mixing them using agitators. But the results are not good. I would like to ask all of you in this community: how do you carry out the blending of atmospheric and vacuum crude oils?
I still hope someone can get involved.
Based on your description, all the methods that should be used have been tried: starting with higher intensity and then lowering it, as well as using a mixer – and none of these worked. So is there something wrong with the way of mixing? Or should I pour out the contents of the jar several times before stirring?
Mixed inside the tank, then supplied for atmospheric and vacuum distillation
Is a mixing tank considered production equipment? Can it be placed together with the tanks used for raw materials and finished products?
Mainly, we have too few storage tanks and too limited means for blending; we are looking for a facility that would allow for better blending.
We belong to the refinery; after blending, it is used as raw material for the atmospheric and vacuum distillation units.
Adjust while supplying, and use an intermediate tank – a smaller one will suffice.
Install a mixing nozzle; it costs over 200,000. Get a quality one – there’s no requirement regarding the order in which the oils are fed in. 5000 liters, mixing time of 2 hours, specific gravity difference of one part in a thousand.
Pipeline blending can be considered. Different crude oils are drawn out in proportion, mixed using a static mixer, and then supplied to the device. In this way, the mixing tank can be eliminated.
Different crude oils are drawn out in proportion, mixed using a static mixer, and then supplied to the device. I personally think this plan is good