3 replies to this topic

[Amiryazdanbakhsh]

I work in distillation unit .we send vaccum bottom to bitumen unit about 5000 bpd but they pay us from outlet of their unit about 4800 bpd...
Is it true?
Is the inlet volume and outlet after they inject air to vaccum bottom must be the same?

[PingPong]

In a bitumen blowing unit typically 2 - 3 wt% of the feed will be lost due to oxidation (hydrogen burnoff).

Moreover the density of the bitumen will typically be 1 % higher than that of the residue feed.

Both numbers depend on the grade of bitumen that is being produced.

 

Together that results in a volume decrease of typically 3 - 4 %.

So 5000 BPSD residue can indeed reduce to 4800 BPSD bitumen, defined at the same temperature.

 

Note also that your residue flow meter as well as your clients bitumen flow meter have an inaccuracy.

[Amiryazdanbakhsh]

Hi...pingpong...
Thank you ...
Can u tell me your reference data?

[PingPong]

See attached page 134 from book Petroleum Fuels Manufacturing Handbook:

 

 p134 from Petroleum Fuels Manufacturing Handbook.jpg   70.47KB   4 downloads