FIELD: chemistry.
SUBSTANCE: invention relates to a method of extracting butadiene from (C)4-fraction. Method includes the following actions: making contact of C4-mixture flow containing butane, butene and butadiene, with a solvent, containing an organic solvent and water, in the column of preliminary absorber of butadiene in order to extract the head fraction containing at least part of butane, butene and water, and the first bottom fraction containing an organic solvent, butadiene and at least part of butene; feeding first bottom fraction into butadiene extraction facility in order to extract butene fraction, fraction of crude butadiene and solvent fraction. Invention also relates to modification of the system of butadiene extraction and system of butadiene extraction.
EFFECT: proposed invention allows extracting butadiene more efficiently.
19 cl, 1 ex, 1 tbl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXTRACTING BUTADIENE | 2013 |
|
RU2602807C1 |
| SELETIVE EXTRACTION OF OLEFINS | 2013 |
|
RU2617692C2 |
| FLEXIBLE METHOD OF EXTRACTING BUTADIENE | 2013 |
|
RU2608389C2 |
| METHOD FOR PRODUCING PURE 1,3-BUTADIENE | 2018 |
|
RU2754823C2 |
| USING ABSORBER C4 FOR STRIPPING ALDEHYDES | 2016 |
|
RU2693490C1 |
| SIMPLIFIED METHOD FOR ISOLATING PURE 1,3-BUTADIENE | 2018 |
|
RU2766334C2 |
| HEAT RECOVERY IN BUTADIENE PRODUCTION METHOD | 2016 |
|
RU2697666C1 |
| METHOD OF OBTAINING UNREFINED 1, 3-BUTADIENE | 2005 |
|
RU2330005C2 |
| METHODS AND INSTALLATIONS FOR PRODUCTION OF BUTADIENE | 2016 |
|
RU2674664C1 |
| METHOD OF TREATING HYDROCARBON FEEDSTOCK CONTAINING HYDROGEN AND HYDROCARBONS C-C | 2016 |
|
RU2722590C2 |
