SU110485A1 - The method of separation of aromatic compounds from mixtures of hydrocarbons by extraction - Google Patents
The method of separation of aromatic compounds from mixtures of hydrocarbons by extractionInfo
- Publication number
- SU110485A1 SU110485A1 SU560085A SU560085A SU110485A1 SU 110485 A1 SU110485 A1 SU 110485A1 SU 560085 A SU560085 A SU 560085A SU 560085 A SU560085 A SU 560085A SU 110485 A1 SU110485 A1 SU 110485A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- extraction
- hydrocarbons
- separation
- mixtures
- aromatic compounds
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Extraction Or Liquid Replacement (AREA)
Description
Выделение ароматических углеводородов из технической смеси, получаемой при швелевании или гидрированли бурого угл или при риформинге естественных или синтетических бензинов, нельз осуществить простой дистилл цией, из-за содержани других углеводородов, кип щих в тех же пределах. Кроме способа выделени методом азеотропной дистилл ции, известны другие пути, например извлечение с помощью силикагел жидкой сернистой кислоты, диэтиленгликол , Р.р-дихлордиэтилового эфира, которые требуют либо предварительного разделени смеси углеводородов на узкие фракции, либо нуждаютс в экстракции при повыщепной температуре под давлением.The extraction of aromatic hydrocarbons from the technical mixture obtained by quilting or hydrogenating brown coal or reforming natural or synthetic gasolines cannot be carried out by simple distillation, due to the content of other hydrocarbons boiling in the same range. In addition to the method of azeotropic distillation, other ways are known, for example, extraction with silica gel of liquid sulfuric acid, diethylene glycol, P. p-dichlorodiethyl ether, which require either preliminary separation of a mixture of hydrocarbons into narrow fractions, or require extraction at elevated temperature under pressure .
Описываемый способ позвол ет выдел ть ароматические углеводороды из вышеуказанных смесей путем двукратной экстракции: сначала ароматические углеводороды извлекают путем экстракции, затем из полученного экстракта повторно их извлекают другим экстрагентом и из полученного экстракта углеводороды выдел ют посредством дистилл ции .The described method allows the separation of aromatic hydrocarbons from the above mixtures by double extraction: first, the aromatic hydrocarbons are extracted by extraction, then from the resulting extract they are again extracted by another extractant and the hydrocarbons from the resulting extract are separated by distillation.
В качестве растворител дл первой ступени экстракции могут слуЖИТ1 ) формамид или его N-алкилированные производные в смеси с водой , вз той в количестве до 20%. Растворителем второй ступени экстракции могут служить вещества, хорошо раствор ющиес в ароматических углеводородах, не смешивающиес с растворителем первой экстракции и пАгеющие точки кипени значительно ниже или выще пределов кипени извлекаемых ароматических углеводородов, например бутана , пентана или технических смесей углеводородов, кип щих вьшю 200° (например фракци 250-320°, выделенна из полностью прогидрированного синтина). Расход монометцлформамида 3-4 кг на тонну подлежащей обработке смеси углеводородов , а расход парафинистой фракции углеводородов, примен емой в качестве растворител второй ступени , составл ет 11 кг.As a solvent for the first stage of extraction, it can be used for) formamide or its N-alkylated derivatives in a mixture with water, taken in an amount up to 20%. The solvent of the second stage of extraction can be substances that dissolve well in aromatic hydrocarbons, are not miscible with the solvent of the first extraction, and have boiling points much lower or higher than boiling limits of recoverable aromatic hydrocarbons, such as butane, pentane, or technical mixtures of hydrocarbons boiling above 200 ° for example, a fraction of 250-320 ° isolated from fully hydrogenated sintin). The consumption of mono-methylformamide is 3-4 kg per ton of the hydrocarbon mixture to be treated, and the consumption of the paraffinic fraction of hydrocarbons used as the second-stage solvent is 11 kg.
Выделение ароматических углеводородов осуществл ют по следующейThe isolation of aromatic hydrocarbons is carried out as follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU560085A SU110485A1 (en) | 1956-11-03 | 1956-11-03 | The method of separation of aromatic compounds from mixtures of hydrocarbons by extraction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU560085A SU110485A1 (en) | 1956-11-03 | 1956-11-03 | The method of separation of aromatic compounds from mixtures of hydrocarbons by extraction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU110485A1 true SU110485A1 (en) | 1956-11-30 |
Family
ID=48383196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU560085A SU110485A1 (en) | 1956-11-03 | 1956-11-03 | The method of separation of aromatic compounds from mixtures of hydrocarbons by extraction |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU110485A1 (en) |
-
1956
- 1956-11-03 SU SU560085A patent/SU110485A1/en active
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