RU1220292C - Method of obtaining ethylbenzene hydroperoxide - Google Patents

Method of obtaining ethylbenzene hydroperoxide

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Publication number
RU1220292C
RU1220292C SU3675366A RU1220292C RU 1220292 C RU1220292 C RU 1220292C SU 3675366 A SU3675366 A SU 3675366A RU 1220292 C RU1220292 C RU 1220292C
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RU
Russia
Prior art keywords
ethylbenzene hydroperoxide
temperature
selectivity
reactors
ethylbenzene
Prior art date
Application number
Other languages
Russian (ru)
Inventor
А.Г. Лиакумович
А.А. Петухов
Ф.Х. Шакиров
В.Н. Сапунов
Р.Г. Галиев
Д.С. Салямов
В.А. Белокуров
Н.И. Матросов
Э.И. Аблякимов
Н.Г. Черкасов
Original Assignee
Liakumovich A G
Petukhov A A
Shakirov F Kh
Sapunov V N
Galiev R G
Salyamov D S
Belokurov V A
Matrosov N I
Ablyakimov E I
Cherkasov N G
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 Liakumovich A G, Petukhov A A, Shakirov F Kh, Sapunov V N, Galiev R G, Salyamov D S, Belokurov V A, Matrosov N I, Ablyakimov E I, Cherkasov N G filed Critical Liakumovich A G
Priority to SU3675366 priority Critical patent/RU1220292C/en
Application granted granted Critical
Publication of RU1220292C publication Critical patent/RU1220292C/en

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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C409/00Peroxy compounds
    • C07C409/02Peroxy compounds the —O—O— group being bound between a carbon atom, not further substituted by oxygen atoms, and hydrogen, i.e. hydroperoxides
    • C07C409/04Peroxy compounds the —O—O— group being bound between a carbon atom, not further substituted by oxygen atoms, and hydrogen, i.e. hydroperoxides the carbon atom being acyclic
    • C07C409/08Compounds containing six-membered aromatic rings
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C407/00Preparation of peroxy compounds

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

Изобретение относится к способу получения гидроперекиси этилбензола и может найти применение при получении окиси пропилена. The invention relates to a method for producing ethylbenzene hydroperoxide and may find application in the production of propylene oxide.

Цель изобретения увеличение селективности процесса. The purpose of the invention is to increase the selectivity of the process.

П р и м е р 1 (сравнительный). На лабораторной пилотной установке в каскаде из 4 реакторов непрерывного действия окисляют этилбензольную шихту, содержащую 0,48 мас. ГПЭБ, 0,23 мас. ацетофенона (АЦФ) и 0,14 мас. метилфенилкабинола (МФК) при постоянной температуре во всех реакторах, равной 152о С, и подаче воздуха 150 ч-1. нагрузка по шихте соответствует 1,80 ч времени пребывания реакционной массы в окислителях. После выхода процесса на стабильный режим в полученном оксидате содержится 10,35 мас. ГПЭБ, 1,58 мас. АЦФ, 1,02 мас. МФК. Селективность образования гидроперекиси этилбензола составляет 79,9 мас.PRI me R 1 (comparative). In a laboratory pilot installation in a cascade of 4 continuous reactors, ethylbenzene charge containing 0.48 wt. GPEB, 0.23 wt. acetophenone (ACP) and 0.14 wt. metilfenilkabinola (IFC) at a constant temperature in all reactors equal to 152 ° C and air supply 150 h -1. the load on the charge corresponds to 1.80 hours of residence time of the reaction mass in oxidizing agents. After the process reaches a stable mode, the resulting oxidate contains 10.35 wt. GPEB, 1.58 wt. ACP, 1.02 wt. IFC. The selectivity of the formation of ethylbenzene hydroperoxide is 79.9 wt.

П р и м е р 2 (сравнительный). Процесс ведут аналогично примеру 1, уменьшая температуру в каждом реакторе на 2оС. На выходе из последнего реактора в полученном оксидате содержится 8,76 мас. ГПЭБ, 1,04 мас. АЦФ, 0,63 мас. МФК. Селективность образования гидроперекиси этилбензола 84,0 мас.PRI me R 2 (comparative). The process is carried out analogously to example 1, reducing the temperature in each reactor by 2 about C. At the exit of the last reactor in the obtained oxidate contains 8.76 wt. GPEB, 1.04 wt. ACP, 0.63 wt. IFC. The selectivity of the formation of ethylbenzene hydroperoxide 84.0 wt.

П р и м е р 3. Опыт ведут аналогично примеру 1, по переменному температурному режиму, причем температура в реакторах соответственно равна 149, 153, 150, 147о С.PRI me R 3. The experiment is carried out analogously to example 1, according to variable temperature conditions, and the temperature in the reactors is respectively 149, 153, 150, 147 about C.

В продуктах окисления найдено 11,10 мас. ГПЭБ, 1,12 мас. АЦФ, 0,73 мас. МФК. Селективность образования ГПЭБ 85,7 мас. 11.10 wt.% Found in oxidation products. GPEB, 1.12 wt. ACP, 0.73 wt. IFC. The selectivity for the formation of HPBE is 85.7 wt.

П р и м е р ы 4-13. Процесс ведут в условиях примера 1, изменяя в зависимости от количества реакторов и времени пребывания в них реакционной массы температурный режим окисления. PRI me R s 4-13. The process is carried out under the conditions of example 1, changing, depending on the number of reactors and the residence time of the reaction mass, the temperature regime of oxidation.

Данные по получению гидроперекиси этилбензола приведены в табл.1. В табл.2 дан материальный баланс процесса. Data on the production of ethylbenzene hydroperoxide are given in table 1. Table 2 gives the material balance of the process.

Таким образом, предложенный способ позволяет получать гидроперекись этилбензола при селективности 84,4-87,1% против селективности 83% в известном способе. Thus, the proposed method allows to obtain ethylbenzene hydroperoxide with a selectivity of 84.4-87.1% versus selectivity of 83% in the known method.

Claims (1)

СПОСОБ ПОЛУЧЕНИЯ ГИДРОПЕРЕКИСИ ЭТИЛБЕНЗОЛА жидкофазным окислением этилбензола кислородом воздуха в каскаде из 3 5 реакторов при температуре не выше 155oС, отличающийся тем, что, с целью увеличения селективности процесса, в первом реакторе процесс ведут при 135 152oС, во втором - при температуре на 3 10oС выше, чем в первом, а во всех последующих реакторах после второго температуру в каждом последующем по сравнению с предыдущим снижают на 2 4oС до 141 151oС.METHOD FOR PRODUCING ETHYLBENZENE HYDROXIDE PERFORMANCE by liquid-phase oxidation of ethylbenzene with atmospheric oxygen in a cascade of 3 5 reactors at a temperature not exceeding 155 o С, characterized in that, in order to increase the selectivity of the process, the process is carried out at 135 152 o С, in the second - at a temperature 3 10 o C higher than in the first, and in all subsequent reactors after the second, the temperature in each subsequent compared with the previous one is reduced by 2 4 o C to 141 151 o C.
SU3675366 1983-12-16 1983-12-16 Method of obtaining ethylbenzene hydroperoxide RU1220292C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU3675366 RU1220292C (en) 1983-12-16 1983-12-16 Method of obtaining ethylbenzene hydroperoxide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU3675366 RU1220292C (en) 1983-12-16 1983-12-16 Method of obtaining ethylbenzene hydroperoxide

Publications (1)

Publication Number Publication Date
RU1220292C true RU1220292C (en) 1995-05-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU3675366 RU1220292C (en) 1983-12-16 1983-12-16 Method of obtaining ethylbenzene hydroperoxide

Country Status (1)

Country Link
RU (1) RU1220292C (en)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Временный технологический регламент цеха N 2505 получения гидроперекиси этилбензола опытно-промышленного завода окиси пропилена и стирола. Нижнекамск, 1982. *

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