Process for producing petroleum oils with ultra-low nitrogen...

Details Process for producing petroleum oils with ultra-low nitrogen... Process for producing petroleum oils with ultra-low nitrogen...

2005-06-30

2010-06-01

Nguyen, Tam M (Department: 1797)

Mineral oils: processes and products

Refining

Nitrogen contaminant removal

C208S311000, C208S313000, C208S322000, C208S326000, C208S330000

Reexamination Certificate

active

07727383

ABSTRACT:
A highly effective liquid-liquid extraction process to remove nitrogen compounds and especially basic nitrogen compounds from aromatic light petroleum oils with excellent recovery employs de-ionized water, which can be acidified, as the extractive solvent. The product is an aromatic hydrocarbon with ultra-low amounts of nitrogen poisons that can deactivate acidic catalysts. The extracted oils are suitable feedstock for the subsequent catalytic processes that are promoted with the high performance solid catalysts, which are extremely sensitive to nitrogen poison.

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