METHOD FOR OBTAINING PETROLEUM WITH LOW CONTENT OF SULPHUR AND ALKENES Russian patent published in 2010 - IPC C10G45/02 C10G69/00 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil refining. Invention deals with method of obtaining petroleum with low content of sulphur and alkenes from flow of cracking-naphtha containing alkenes and organic compounds of sulphur, which includes the following stages: (a) separation of cracking-naphtha flow at least into three fractions by means of rectification; at that, the above fractions contain light fraction of cracking-naphtha, middle fraction of cracking-naphtha and heavy fraction of cracking-naphtha; (b) processing of light fraction of cracking-naphtha with conversion of some portion of alkenes which are contained in it to oxygenated compounds; (c) processing of middle fraction of cracking-naphtha with the purpose of removal of organic compounds of sulphur, which are contained in it; (d) processing of heavy fraction of cracking-naphtha for removal of some portion of organic compounds of sulphur, which are contained in it, and (e) obtaining petroleum with low content of sulphur and alkenes by using at least two fractions - from the processed light fraction of cracking-naphtha and heavy fraction of cracking-naphtha, and probably the processed middle fraction of cracking-naphtha. Invention also refers to methods for obtaining petroleum with low content of sulphur and alkenes from flow of cracking-naphtha with complete temperature boiling range.

EFFECT: obtaining petroleum with low content of sulphur.

16 cl, 2 ex, 1 tbl, 3 dwg