SU583994A1 - Method of separating aromatic hydrocarbons and hydrocarbon mixtures - Google Patents

Method of separating aromatic hydrocarbons and hydrocarbon mixtures

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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
Application number
SU7602404994A
Other languages
Russian (ru)
Inventor
Владимир Константинович Капорский
Геннадий Филиппович Юхно
Акдес Закирович Биккулов
Юрий Федорович Соков
Наталия Николаевна Красногорская
Original Assignee
Уфимский Нефтяной Институт
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Уфимский Нефтяной Институт filed Critical Уфимский Нефтяной Институт
Priority to SU7602404994A priority Critical patent/SU583994A1/en
Application granted granted Critical
Publication of SU583994A1 publication Critical patent/SU583994A1/en

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  • 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

SU7602404994A 1976-09-14 1976-09-14 Method of separating aromatic hydrocarbons and hydrocarbon mixtures SU583994A1 (en)

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

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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)

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