The issue of sulfur content in oil
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Just a gentle question: the sulfur content in crude oil is around 0.54%, while that in the processed vacuum residue is about 1.2%. How come the sulfur content has increased?
After processing, the sulfur in crude oil may become concentrated in vacuum residue. Vacuum residue is the oil residue remaining from the petroleum distillation process, and it contains a high level of sulfur. This is because in oil processing, crude oil goes through a series of separation and purification steps, including processes such as distillation and catalytic cracking. During the cracking process, some sulfur compounds may be converted into hydrogen sulfide, which then combines with other compounds to form compounds with a higher sulfur content, thereby further increasing the sulfur content in the reduced-pressure residue. Therefore, the sulfur content of the vacuum residue after processing will be higher than that of the crude oil. .
The simple version is condensed; everything is brought together
Those with high sulfur content have gone to the residue fraction