FIELD: chemistry.
SUBSTANCE: disclosed is a method of extracting propylene from a propane-propylene fraction by rectification, comprising feeding a propane-propylene fraction to a rectification column consisting of a stripping and reinforcing sections, output of commercial propylene from the top of the reinforcing section of the rectification column, characterized in that the bottom product of the distillation column of the rectification column with content (wt%) of the propane fraction is 70, propylene fraction – 30 is directed into upper part of additional separation column, where after rectification in an additional separation column an upper stream with content of (wt%) of propylene fraction – 90, propane fraction – 10 is directed for condensation and further discharged to flow of propane-propylene fraction.
EFFECT: improved process of extraction of olefin fraction with increased content of basic substance from hydrocarbon material due to increased degree of extraction of olefin fraction from initial raw material.
1 cl, 2 dwg, 1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF SEPARATE AND/OR COMBINED PRODUCTION OF ACETYLENE AND ALLENE | 1997 |
|
RU2120932C1 |
| METHOD OF PRODUCING ETHYLENE AND PROPYLENE | 2023 |
|
RU2814255C1 |
| METHOD FOR COMPLEX PROCESSING OF NATURAL HYDROCARBON GAS WITH HIGH NITROGEN CONTENT | 2015 |
|
RU2576428C1 |
| METHOD OF GAS SEPARATION DURING CATALYTIC CRACKING OF PETROLEUM DIRECTION | 2012 |
|
RU2479620C1 |
| IMPROVED METHOD FOR SEPARATION WHEN PRODUCING OLEFINS | 2009 |
|
RU2445301C1 |
| METHOD OF PREPARING H-OCTANE GASOLINE COMPONENT CONTAINING METHYL-TERT-BUTYL AND METHYL-TERT-AMYL ETHERS | 2003 |
|
RU2236396C1 |
| METHOD OF PROCESSING NATURAL HYDROCARBON GAS | 2015 |
|
RU2580453C1 |
| ETHYLENE AND PROPYLENE GAS-CHEMICAL PRODUCTION | 2017 |
|
RU2670433C1 |
| ADVANCED HYDROCARBON REFINERY GAS PROCESSING METHOD | 2013 |
|
RU2540270C1 |
| BLACK OIL DELAYED COKING METHOD AND UNIT | 2012 |
|
RU2541016C2 |
