SU583994A1 - Method of separating aromatic hydrocarbons and hydrocarbon mixtures - Google Patents
Method of separating aromatic hydrocarbons and hydrocarbon mixturesInfo
- Publication number
- SU583994A1 SU583994A1 SU7602404994A SU2404994A SU583994A1 SU 583994 A1 SU583994 A1 SU 583994A1 SU 7602404994 A SU7602404994 A SU 7602404994A SU 2404994 A SU2404994 A SU 2404994A SU 583994 A1 SU583994 A1 SU 583994A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- aromatic hydrocarbons
- separating aromatic
- hydrocarbon mixtures
- mixtures
- separating
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Изобретение относитс к способам выделени ароматических углеводородов из их смесей с другими углеводородами и может быть использовано в нефтехимической и нефтеиерерабатываюпдей промышленности. Известны способы выделени ароматических углеводородов из смесей путем экстракции селективпыми растворител ми такими как кислородсодержащие ароматические соединени 1. Однако они не используютс в промышлепности ввиду ограниченности сырьевой базы, либо вредных условий производства. Известен также способ выделени ароматических углеводородов из их смесей путем экстракции селективным растворителем Nметилпирролидоном 2. Однако селективность N-метилпирролидона недостаточно высока , и поэтому приходитс дл повышени селективности добавл ть большое количество воды (до 15%), что ведет к увеличению энергетических затрат. Кроме того , стоимость N-метилпирролидона высока , что св зано с многоступенчатым процессом его производства. Цель изобретени - повышение селективности процесса. Поставленна цель достигаетс описываемым способом выделени ароматических углеводородов из углеводородных смесей путем экстракции селективным растворителем - N, N-диметилимидазолидоном. N, М-диметплимпдазолидоп представл ет собой циклическое соединение формулы СМ,-СН, IК .N-Ctk / . 1ДТ-Д 1 ;етллпмпдазолпдон синтезируют исход из доступного сырь этилепмочевины и формальдегида, в одпу стадию, он обладает более высокой плотностью - 1,0468, чем 1 -метил 1Ирролидоп, df 1,0330, т. кип. 218°С. N, N-Диметилимпдазолидон, как экстрагонг , обладает более высокой избирательной способностью, так как коэффициент селективности дл системы н-гексапбензол при температуре равеп 9,25, а дл N-метплпирролидона - 8,6. Пример 1. Катализат платфорхмипга (т. КПП. 62-Юб С), содержащий 23,8% ароматических углеводородов (бензол, толуол) подвергают многоступепчатой экстракции на лабораторной установке при 40° С и подачеThis invention relates to methods for separating aromatic hydrocarbons from their mixtures with other hydrocarbons and can be used in the petrochemical and petroleum industries. Methods are known for separating aromatic hydrocarbons from mixtures by extraction with selective solvents such as oxygen-containing aromatic compounds 1. However, they are not used in industry due to the limited raw material base or harmful production conditions. There is also known a method for separating aromatic hydrocarbons from their mixtures by extraction with Nmethylpyrrolidone 2 with a selective solvent. However, the selectivity of N-methylpyrrolidone is not high enough and therefore it is necessary to add a large amount of water (up to 15%) to increase the selectivity, which leads to an increase in energy costs. In addition, the cost of N-methylpyrrolidone is high due to the multistep process of its production. The purpose of the invention is to increase the selectivity of the process. This goal is achieved by the described method of separating aromatic hydrocarbons from hydrocarbon mixtures by extraction with a selective solvent, N, N-dimethylimidazolidone. N, M-dimeplimpdazolidop is a cyclic compound of the formula CM, -CH, IK .N-Ctk /. 1ДТ-Д 1; ellmpmpdazolpdon is synthesized from the available raw material of ethylene urea and formaldehyde, at one stage, it has a higher density - 1.0468 than 1-methyl 1 - Irrolidop, df 1.0330, t.kip. 218 ° C. N, N-Dimethylimpdazolidone, as extragong, has a higher selective ability, since the coefficient of selectivity for the n-hexapbenzene system at a temperature of 9.25, and for N-metplpyrrolidone - 8.6. Example 1. The catalyst platforming (t. CAT. 62-Yub C) containing 23.8% of aromatic hydrocarbons (benzene, toluene) is subjected to multi-stage extraction in a laboratory setup at 40 ° C and feeding
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7602404994A SU583994A1 (en) | 1976-09-14 | 1976-09-14 | Method of separating aromatic hydrocarbons and hydrocarbon mixtures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7602404994A SU583994A1 (en) | 1976-09-14 | 1976-09-14 | Method of separating aromatic hydrocarbons and hydrocarbon mixtures |
Publications (1)
Publication Number | Publication Date |
---|---|
SU583994A1 true SU583994A1 (en) | 1977-12-15 |
Family
ID=20677195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU7602404994A SU583994A1 (en) | 1976-09-14 | 1976-09-14 | Method of separating aromatic hydrocarbons and hydrocarbon mixtures |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU583994A1 (en) |
-
1976
- 1976-09-14 SU SU7602404994A patent/SU583994A1/en active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR900012960A (en) | Process for preparing organosilicon product | |
KR890003651A (en) | Conversion of ethylbenzene in C_8 aromatic hydrocarbon mixture | |
SU583994A1 (en) | Method of separating aromatic hydrocarbons and hydrocarbon mixtures | |
JPS51149242A (en) | Process for preparing urethanes | |
BR7409774A (en) | CATALYST FOR OXIDATION OF ORGANIC COMPOUNDS, MANUFACTURING PROCESS OF MALEIC ANIDIDE | |
KR840007557A (en) | Method for preparing mono-nitro aromatic compound | |
SU1053741A3 (en) | Method for recovering m-cresol from mixture containing n-cresols | |
GB1108177A (en) | Process for the separation of hydrocarbon compounds | |
ES2019439B3 (en) | PURE AROMATIC SERIES SEPARATION PROCESS | |
SU539529A3 (en) | Method for producing benzimidazole-1-carboxylic acid amides | |
Mukaiyama et al. | On the Thermal Dissociation of Organic Compounds. XIV. The Effects of the Solvents and of the Substituents on the Thermal Dissociation of Urethans in Amines | |
Moussa | Cyclic aromatic analogues of the hendrickson reagent; NMR studies and electrophilic properties | |
SU791712A1 (en) | Method of isolating aromatic hydrocarbons from their mixtures with nonaromatics | |
NL7509581A (en) | PROCESS FOR PREPARING ORGANIC CHEMICAL COMPOUNDS. | |
ATE229490T1 (en) | ALKYLATION PROCESS WITH HIGHER CATALYST STABILITY | |
SU540563A3 (en) | Method for separating 2,6-dimethyl naphthalene from hydrocarbon mixtures | |
RU2202529C2 (en) | Method of extraction of aromatic hydrocarbon | |
SU463656A1 (en) | The method of purification of hydrocarbons from impurities of cyclopentadiene | |
KR840005821A (en) | Purification Method of Propylene Polymer | |
ATA712976A (en) | PROCESS FOR THE PRODUCTION OF METHYL TERT. BUTYLATHER FROM ISOBUTEN OF ISOBUTEN CONTAINING C4 HYDROCARBON STREAMS WITH THE PRODUCTION OF ISOBUTEN-FREE HYDROCARBON STREAMS | |
SU468425A3 (en) | The method of obtaining 5-nitrofurfurylideneamine oxides | |
SU771543A1 (en) | Stationary phase for gas chromatography | |
SU452171A1 (en) | The method of separation of ammonia from the gas mixture | |
SU1532571A1 (en) | Method of purifying oil fractions of petroleum | |
GB939470A (en) | The separation of olefinic hydrocarbons from mixtures containing the same |