SU148797A1 - The method of obtaining mono - and dialkylbenzenes - Google Patents
The method of obtaining mono - and dialkylbenzenesInfo
- Publication number
- SU148797A1 SU148797A1 SU745773A SU745773A SU148797A1 SU 148797 A1 SU148797 A1 SU 148797A1 SU 745773 A SU745773 A SU 745773A SU 745773 A SU745773 A SU 745773A SU 148797 A1 SU148797 A1 SU 148797A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- dialkylbenzenes
- obtaining mono
- benzene
- mono
- polyalkylbenzenes
- Prior art date
Links
Description
Известны способы деалкилировани диэтилбензолов обработкой их бензолом в присутствии А1С1з. Однако эти способы не нашли широкого промышленного применени из-за низкого выхода моноалкилбензолов и трудностей работы с А1С1з.Methods are known for the dealkylation of diethylbenzenes by treating them with benzene in the presence of AlCl3. However, these methods did not find widespread industrial use due to the low yield of monoalkylbenzenes and the difficulty of working with A1Cl.
Предлагаемый способ получени моно- и диалкилбензолов основан на каталитическом крекинге полиалкилбензолов. Сырые шолиалкилбензолы перегон ютс под вакуумом в 500 мм рт. ст. дл отделени от смол. Дистилл т с удельным весом 0,938 и концом кипени 330° в количестве до 70% от исходных полиалкилбензолов - подвергают каталитическому крекингу в паровой фазе над движуш,имС шариковым алюмосиликатным катализатором, при температуре 450-550° и атмосферном давлении , без добавок бензола к сырью.The proposed method for producing mono- and dialkyl benzenes is based on the catalytic cracking of polyalkyl benzenes. Crude sholyalkylbenzenes are distilled under vacuum at 500 mm Hg. Art. for separation from tar. Distillate with a specific gravity of 0.938 and a boiling point of 330 ° in an amount of up to 70% of the original polyalkylbenzenes is subjected to catalytic cracking in the vapor phase above the engine, with a ball-type aluminosilicate catalyst, at a temperature of 450-550 ° and atmospheric pressure, without adding benzene to the raw materials.
Объемный расход сырь - 0,7-1,0. Регенераци катализатора воздухом производитс непрерывно в регенераторе, причем после регенерации активность катализатора полностью восстанавливаетс .Volumetric consumption of raw materials - 0.7-1.0. The catalyst is regenerated by air continuously in the regenerator, and after regeneration the catalyst activity is completely restored.
В полученном продукте содержитс до 18% бензола, до 34% этилбензола и до 19% диэтилбензола. Продукты крекинга могут быть присоединены к алкилату и направлены на ректификацию, что дает сушественное увеличение выхода этилбензола и снижение расходного коэффициента по бензолу и хлористому алюминию в процессе алкилировани .The resulting product contains up to 18% benzene, up to 34% ethylbenzene and up to 19% diethylbenzene. The cracking products can be attached to the alkylate and sent for rectification, which gives a substantial increase in the yield of ethylbenzene and a decrease in the consumption coefficient for benzene and aluminum chloride in the alkylation process.
Предмет изобретени Subject invention
Способ получени моно- и диалкилбензолов из полиалкилбензолов, отл и ч а ю ш,и и с тем, что, с целью увеличени выхода продуктов, процесс ведут крекингом полиалкилбензолов над алюмосиликатным катализатором при температурах 450-550°.The method of producing mono- and dialkylbenzenes from polyalkylbenzenes, and with the fact that, in order to increase the yield of products, the process is conducted by cracking polyalkylbenzenes over an aluminosilicate catalyst at temperatures of 450-550 °.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU745773A SU148797A1 (en) | 1961-09-25 | 1961-09-25 | The method of obtaining mono - and dialkylbenzenes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU745773A SU148797A1 (en) | 1961-09-25 | 1961-09-25 | The method of obtaining mono - and dialkylbenzenes |
Publications (1)
Publication Number | Publication Date |
---|---|
SU148797A1 true SU148797A1 (en) | 1961-11-30 |
Family
ID=48304019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU745773A SU148797A1 (en) | 1961-09-25 | 1961-09-25 | The method of obtaining mono - and dialkylbenzenes |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU148797A1 (en) |
-
1961
- 1961-09-25 SU SU745773A patent/SU148797A1/en active
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