FIELD: chemistry.
SUBSTANCE: invention relates to the method of producing distillate, that comprises: feeding raw materials for oligomerization comprising C4 olefins, into the oligomerization zone; recirculating a gasoline stream containing C8 olefins, into the said oligomerization zone; oligomerizing C4 olefins with C4 olefins and C8 olefins in the said oligomerization zone; wherein the said method comprises oligomerizing a larger proportion of normal butenes than isobutenes. The oligomerization of the said C4 olefins with other specified C4 olefins and the said C8 olefins are carried out over a zeolite catalyst having a one-dimensional porous structure of 10-membered rings, wherein the said zeolite catalyst is MTT; the separation of the oligomerisate stream from the said oligomerization zone in the extraction zone to produce a distillate stream containing distillate fraction hydrocarbons and the said gasoline recirculate stream.
EFFECT: more diesel.
7 cl, 9 ex, 17 tbl, 13 dwg
Authors
Dates
2017-12-19—Published
2013-11-11—Filed