Refining of Diesel and Ship Fuels by Extraction and Combined Methods. Part 2. Use of Organic Solvents as Extractants

Abstract

The review deals with extraction refining of straight-run diesel fractions, atmospheric gasoil, gasoils from secondary oil refining processes (decelerated coking, visbreaking, catalytic cracking), and light and heavy vacuum gasoils to remove heteroatomic sulfur- and nitrogen-containing compounds, polycyclic arenes, and resins using selective organic solvents and extraction systems with a nonpolar solvent. Possible methods for extraction regeneration and extract application fields are considered.