Zero waste oil refining with the production of 92-93% light products
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Process Description Feedstock – treated oil is divided in fractionation unit 1 into gas, gasoline, light and heavy gas oil fractions and residue. The heavy gas oil fraction is mixed with raffinate from reforming unit 5 and is subject to thermal conversion in unit 2 to produce gas (not shown), gasoline and light gas fractions of thermal conversion and residue. The sum of thermal conversion and fractionation residues is mixed with aromatic hydrocarbons С9+ fraction from unit 5 and processed in hydroconversion unit 3 to produce gas, gasoline and light gasoil fractions of hydroconversion and residue, which is output as boiler fuel. The sum of gasoline and light gasoil fractions is hydrotreated in unit 4 to produce hydrogenated gasoline fraction and stable DF. Hydrogenate of the sum of gasoline fractions is subjected to reforming in unit 5 to obtain gas and reformate, from which the raffinate is separated to be mixed with heavy gasoil fraction, and aromatic hydrocarbons fraction, from which the С9+ fraction is separated to be mixed with the sum of thermal conversion and fractionation residues, as well as BTX fraction, which are removed from the unit.
Process features
Combination of standard oil refining processes with thermal conversion and hydroconversion processes
Increase in naphtha recovery by 5-10%, DF by 30-45%
Technical Specification
Feedstock - treated oil
Feedstock capacity: up to 5.0 MTA
LPG recovery: 4-5%
Recovery of benzene-toluene-xylene fraction: 8-18 %
Recovery of diesel distillates: 60-75 %
Residue recovery (as fuel for technical needs: 2.5-4.5%)
Patents of the Russian Federation No. 2490307, 2495084, 2510642, 2707188