Upgrading of light cycle oil for ultra low sulphur diesel production by a solvent extraction procedure
by Georgina C. Laredo; Pedro Martin Vega-Merino; Patricia Pérez-Romo; Ricardo Agueda-Rangel
International Journal of Oil, Gas and Coal Technology (IJOGCT), Vol. 22, No. 3, 2019

Abstract: The upgrading of light cycle oil (LCO) present in straight run gas oil/light cycle oil mixtures (SRGO/LCO) was studied by an extraction procedure, using acetone/water (AW) combinations. The effect of the experimental conditions (LCO content in the SRGO/LCO mixtures and water content in the acetone/water solution) was studied firstly in batch experiments. The effectiveness of the procedure was carried out by measuring nitrogen removal as the distribution coefficient (D_N) and raffinate yield as the percentage of weight change (WCh, wt.%), setting high D_N and near zero WCh values as goals, which were reached with a water in acetone mixture of 5/95 (AW5). Considering these results, a counter current system was implemented with the AW5 mixture as solvent with a solvent/feed ratio of two. SRGO/LCO mixtures up to 60/40 represented feedstocks with nitrogen, sulphur and aromatic hydrocarbon contents that may provide a specification complying diesel after the upcoming hydrotreatment (HDT) process. [Received: October 12, 2017; Accepted: December 1, 2017]

Online publication date: Tue, 15-Oct-2019

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