Study on dearomatization of coker gas oil from Liaohe Petrochemical Corporation
Furfural is used in this paper to selectively remove the aromatic hydrocarbons and basic nitrogen compounds from coker gas oil(CGO) of Liaohe Petrochemical Corporation.The operation conditions are optimized.The extraction temperature is 50℃ and the volume ratio between solvent and oil is 1.5.The yield of raffinate oil,of which the contents of basic nitrogen are 712.72 mg/kg,is 67.55%.The content of saturates is increased from 61.00% to 77.83% while those of aromatics is decreased from 34.94% to 18.76%.The results of basic nitrogen and SARA analysis indicate that the raffinate oil could be than VGO,especially when used as FCC feedstock.The extract oil could be used to manufacture high-value chemical products.