METHOD FOR CONVERSION OF LOW-GRADE RAW FEEDSTOCK TO HIGH-QUALITY OIL FUEL Russian patent published in 2013 - IPC C10G69/04 C10G11/08 

FIELD: oil and gas industry.

SUBSTANCE: invention is related to process of hydrocarbon oil catalytic conversion. Invention is referred to conversion of law-grade raw feedstock which is input to the first reaction zone in catalytic conversion reactor and subjected to catalytic reactions of cracking by means of raw feedstock contacting with catalyst of catalytic conversion. Vapours and used catalyst are mixed at random basis with light raw feedstock and/or cooling medium and are introduced into the second reaction zone in catalytic conversion reactor for the purpose of further cracking, hydrogen transfer and isomerisation reactor. Products of the reaction are separated from used catalyst by separation into gaseous and solid phases and introduced into separation system in order to obtain dry gas, LPG, petrol and diesel fuel and catalytic gas oil with c suspended catalyst (FGO). Used catalyst is desorbed, regenerated and then hot regenerated catalyst is returned to the reactor. FGO is introduced into hydrofining plant and/or plant for aromatic hydrocarbons separation in order to receive hydrofined FGO and/or FGO raffinate. Hydrofined FGO and/or FGO raffinate is transferred to the first reaction zone of catalytic conversion reactor and/or to other FCC plants for further reactions in order to receive the target oil fuel as a high-quality product.

EFFECT: conversion of low-grade feedstock to high-quality oil fuel and propylene and effective use of oil resources by significant reducing output of dry gas and coke.

21 cl, 4 dwg, 10 tbl, 16 ex