RU1220292C - Method of obtaining ethylbenzene hydroperoxide - Google Patents
Method of obtaining ethylbenzene hydroperoxideInfo
- 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
- Authority
- RU
- Russia
- Prior art keywords
- ethylbenzene hydroperoxide
- temperature
- selectivity
- reactors
- ethylbenzene
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C409/00—Peroxy compounds
- C07C409/02—Peroxy compounds the —O—O— group being bound between a carbon atom, not further substituted by oxygen atoms, and hydrogen, i.e. hydroperoxides
- C07C409/04—Peroxy 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
- C07C409/08—Compounds containing six-membered aromatic rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C407/00—Preparation 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
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)
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
ID=21093917
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) |
-
1983
- 1983-12-16 RU SU3675366 patent/RU1220292C/en active
Non-Patent Citations (1)
Title |
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Временный технологический регламент цеха N 2505 получения гидроперекиси этилбензола опытно-промышленного завода окиси пропилена и стирола. Нижнекамск, 1982. * |
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