SU148797A1 - The method of obtaining mono - and dialkylbenzenes - Google Patents

The method of obtaining mono - and dialkylbenzenes

Info

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
Application number
SU745773A
Other languages
Russian (ru)
Inventor
С.И. Кричмар
М.И. Мальский
А.Е. Пинскер
Л.И. Скульский
Original Assignee
С.И. Кричмар
М.И. Мальский
А.Е. Пинскер
Л.И. Скульский
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 С.И. Кричмар, М.И. Мальский, А.Е. Пинскер, Л.И. Скульский filed Critical С.И. Кричмар
Priority to SU745773A priority Critical patent/SU148797A1/en
Application granted granted Critical
Publication of SU148797A1 publication Critical patent/SU148797A1/en

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 °.

SU745773A 1961-09-25 1961-09-25 The method of obtaining mono - and dialkylbenzenes SU148797A1 (en)

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)

Similar Documents

Publication Publication Date Title
GB1069044A (en) Process for transferring double bond of olefin
US2648713A (en) Separation of isomeric aromatic compounds
JPS6323825A (en) Manufacture of tertiary olefin
US2564388A (en) Isomerization of xylenes
SU148797A1 (en) The method of obtaining mono - and dialkylbenzenes
US2834821A (en) Purification of xylene-ethylbenzene mixtures
US2435038A (en) Catalytic dealkylation of alkyl aromatic compounds
US2457146A (en) Process for producing high boiling polymers
US3201486A (en) Alkylation of alkylatable organic compounds
Hay et al. Catalytic isomerization of 1-hexene
US2897246A (en) Alkylation process with treated silica-alumina catalyst
US2737537A (en) Production of aromatic hydrocarbons by catalytic isomerization of 2:5 dimethylhex-3-yne-1:5 diene
GB809908A (en) A continuous process for preparing meta di-isopropylbenzene
SU265349A1 (en) The method of obtaining sec-butylbenzene
US2416022A (en) Alkylation process
US2719183A (en) Isomerization of xylenes
US2234177A (en) Conversion of olefin hydrocarbons
GB749187A (en) Process for preparing ú­-di-isopropyl benzene and terephthalic acid
US2382505A (en) Olefin recovery process
JPS6254406B2 (en)
SU67612A1 (en) The method of producing butylenes and butane
Levesque et al. Alkylation of benzene using an aqueous solution of ethanol
SU550372A1 (en) The method of producing pentenes
GB749186A (en) Process for preparing ú­-di-isopropyl benzene and terephthalic acid
SU988799A1 (en) Process for preparing isopropyl-benzene