RU97118438A - METHOD FOR EXTRACTING ACETIC ACID FROM DILUTED WATER FLOWS FORMED DURING THE CARBONYLATION PROCESS - Google Patents

METHOD FOR EXTRACTING ACETIC ACID FROM DILUTED WATER FLOWS FORMED DURING THE CARBONYLATION PROCESS

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Publication number
RU97118438A
RU97118438A RU97118438/04A RU97118438A RU97118438A RU 97118438 A RU97118438 A RU 97118438A RU 97118438/04 A RU97118438/04 A RU 97118438/04A RU 97118438 A RU97118438 A RU 97118438A RU 97118438 A RU97118438 A RU 97118438A
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RU
Russia
Prior art keywords
water
acetic acid
catalyst
methanol
methyl acetate
Prior art date
Application number
RU97118438/04A
Other languages
Russian (ru)
Other versions
RU2155183C2 (en
Inventor
О.Скейтс Марк
Е.Паркер Стивен
Б.Лейси Дженифер
К.Гиббс Рассел
Original Assignee
Хехст Силаниз Корпорейшн
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Publication date
Priority claimed from US08/418,333 external-priority patent/US5599976A/en
Application filed by Хехст Силаниз Корпорейшн filed Critical Хехст Силаниз Корпорейшн
Publication of RU97118438A publication Critical patent/RU97118438A/en
Application granted granted Critical
Publication of RU2155183C2 publication Critical patent/RU2155183C2/en

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Claims (8)

1. Способ карбонилирования одного или более соединений, выбираемых из группы, состоящей из метанола, диметилового эфира или метилацетата до получения уксусной кислоты, включающий: карбонилирование указанного метанола, диметилового эфира или метилацетата в реакционной среде, дополнительно содержащей металл VIII группы в качестве катализатора карбонилирования, метилиодид и воду, до образования продукта реакции, включающего в себя уксусную кислоту и воду, отделение и очистку указанного продукта реакции до получения практически сухой уксусной кислоты и одного или нескольких водных потоков, содержащих от около 5 до около 30 мас.% уксусной кислоты, отличающийся тем, что взаимодействуют по меньшей мере, часть по меньшей мере одного из указанных водных потоков из сушильной колонны, или делительной колонны, с метанолом в присутствии второго катализатора до получения метилацетата и воды, отделяют метил от воды и возвращают метилацетат в реактор.1. The method of carbonylation of one or more compounds selected from the group consisting of methanol, dimethyl ether or methyl acetate to obtain acetic acid, comprising: carbonylation of the indicated methanol, dimethyl ether or methyl acetate in a reaction medium additionally containing a metal of group VIII as a carbonylation catalyst, methyl iodide and water, before the formation of a reaction product, including acetic acid and water, separation and purification of the specified reaction product to obtain practically dry vinegar acid and one or more water streams containing from about 5 to about 30 wt.% acetic acid, characterized in that at least a portion of at least one of these water streams from the drying column or separation column is reacted with methanol in the presence of a second catalyst, until methyl acetate and water are obtained, methyl is separated from water and methyl acetate is returned to the reactor. 2. Способ по п. 1, отличающийся тем, что вторым катализатором является кислотный катализатор. 2. The method according to p. 1, characterized in that the second catalyst is an acid catalyst. 3. Способ по п. 2, отличающийся тем, что указанный кислотный катализатор включает в себя катионообменную смолу, содержащую группы сульфокислоты. 3. The method according to p. 2, characterized in that the acid catalyst includes a cation exchange resin containing sulfonic acid groups. 4. Способ по п. 1, отличающийся тем, что указанный водный поток взаимодействует путем контактирования указанного водного потока с метанолом, движущимся в противотоке к нему, в процессе контактирования водного потока и метанола со вторым катализатором. 4. The method according to p. 1, characterized in that said water stream interacts by contacting said water stream with methanol moving in countercurrent to it, in the process of contacting the water stream and methanol with a second catalyst. 5. Способ по п. 1, отличающийся тем, что по меньшей мере часть воды, отделенной от метилацетата, выводится из системы. 5. The method according to p. 1, characterized in that at least a portion of the water separated from the methyl acetate is removed from the system. 6. Способ по п. 1, отличающийся тем, что указанная реакционная среда содержит от конечного количества воды до около 12 мас.% воды. 6. The method according to p. 1, characterized in that the reaction medium contains from a final amount of water to about 12 wt.% Water. 7. Способ по п. 6, отличающийся тем, что указанная реакционная среда содержит менее 5 мас.% воды. 7. The method according to p. 6, characterized in that the reaction medium contains less than 5 wt.% Water. 8. Способ по п. 1, отличающийся тем, что концентрация уксусной кислоты в водный потоках составляет от около 5 до 29 мас.%. 8. The method according to p. 1, characterized in that the concentration of acetic acid in aqueous streams is from about 5 to 29 wt.%.
RU97118438/04A 1995-04-07 1996-03-22 Method of recovering acetic acid from dilute aqueous flows resulting during carbonylation process RU2155183C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/418,333 1995-04-07
US08/418,333 US5599976A (en) 1995-04-07 1995-04-07 Recovery of acetic acid from dilute aqueous streams formed during a carbonylation process

Publications (2)

Publication Number Publication Date
RU97118438A true RU97118438A (en) 1999-08-10
RU2155183C2 RU2155183C2 (en) 2000-08-27

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RU97118438/04A RU2155183C2 (en) 1995-04-07 1996-03-22 Method of recovering acetic acid from dilute aqueous flows resulting during carbonylation process

Country Status (27)

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US (1) US5599976A (en)
EP (1) EP0821662B1 (en)
JP (1) JP3803114B2 (en)
KR (1) KR100408144B1 (en)
CN (1) CN1067974C (en)
AR (1) AR001519A1 (en)
AT (1) ATE195714T1 (en)
AU (1) AU709281B2 (en)
BR (1) BR9604806A (en)
CA (1) CA2217028C (en)
CZ (1) CZ290873B6 (en)
DE (1) DE69609955T2 (en)
HU (1) HUP9801708A3 (en)
IN (1) IN189441B (en)
MX (1) MX9707696A (en)
MY (1) MY115730A (en)
NO (1) NO308356B1 (en)
NZ (1) NZ305226A (en)
PH (1) PH31642A (en)
PL (1) PL184206B1 (en)
RS (1) RS49519B (en)
RU (1) RU2155183C2 (en)
SA (1) SA96160758B1 (en)
TW (1) TW344739B (en)
UA (1) UA48170C2 (en)
WO (1) WO1996031456A1 (en)
ZA (1) ZA962366B (en)

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