HEAVY PETROLEUM FRACTION PURIFICATION PROCESS

摘要

FIELD: petroleum processing. ^ SUBSTANCE: heavy petroleum fraction with hydrogen content 12% or less is subjected to solvent extraction under such conditions that hydrogen content relative to the weight of fraction is raised by 0.2-1.5%. Thus obtained dewaxed petroleum fraction is the subjected to hydrofining under such conditions that hydrogen content relative to the weight of dewaxed petroleum fraction rises by 0.5-1.5% and purified petroleum fraction is thereby produced. ^ EFFECT: increased degree of purification. ^ 7 cl, 7 tbl, 10 ex