METHOD FOR PRODUCTION OF HIGH-OCTANE PETROL Russian patent published in 2013 - IPC C10G59/02 C10G65/02 C10G69/08 

FIELD: oil and gas industry.

SUBSTANCE: invention is referred to method of production of high-octane petrol and includes fractionation of hydrotreated naphtha into light and heave fractions; light naphtha isomerisation and heavy naphtha reforming in presence of platinum-containing catalyst with delivery of excessive hydrogen from reforming to isomerisation. Isomerisation is carried out with sulfate-zirconia catalyst with subsequent separation of isomerisate into three fractions: low-boiling fraction, medium fraction containing n-hexane and methylpenthanes and high-boiling fraction; medium fraction is recirculated to isomerisation raw material. By rectification from reformate light and heavy reforming fractions are obtained; heavy fraction is mixed with low- and high-boiling fractions of isomerisate with production of the target product while light fraction of reforming boiling away up to 85-95°C is subjected to hydroisomerisation at 250-300°C in presence of platinum-containing catalyst and obtained hydroisomerisate is delivered to be mixed with isomerisate.

EFFECT: reduction of benzole and aromatic hydrocarbons content in compliance with requirements to modern types of petrol with preservation of integration for reforming and isomerisation processes.

2 cl, 1 tbl, 7 ex