RU2001101477A - DEHYDRATION METHOD - Google Patents

DEHYDRATION METHOD

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Publication number
RU2001101477A
RU2001101477A RU2001101477/04A RU2001101477A RU2001101477A RU 2001101477 A RU2001101477 A RU 2001101477A RU 2001101477/04 A RU2001101477/04 A RU 2001101477/04A RU 2001101477 A RU2001101477 A RU 2001101477A RU 2001101477 A RU2001101477 A RU 2001101477A
Authority
RU
Russia
Prior art keywords
formaldehyde
water
methanol
formaldehyde solution
containing product
Prior art date
Application number
RU2001101477/04A
Other languages
Russian (ru)
Other versions
RU2232744C2 (en
Inventor
Уилльям Дэвид ПАРТЕН
Original Assignee
ИНЕОС АКРИЛИКС Ю Кей ЛИМИТЕД
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
Priority claimed from GBGB9812083.5A external-priority patent/GB9812083D0/en
Application filed by ИНЕОС АКРИЛИКС Ю Кей ЛИМИТЕД filed Critical ИНЕОС АКРИЛИКС Ю Кей ЛИМИТЕД
Publication of RU2001101477A publication Critical patent/RU2001101477A/en
Application granted granted Critical
Publication of RU2232744C2 publication Critical patent/RU2232744C2/en

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Claims (13)

1. Способ отделения содержащего формальдегид продукта от раствора формальдегида, содержащего формальдегид, воду и метанол, где указанный содержащий формальдегид продукт содержит значительно меньше воды, чем указанный раствор формальдегида, включающий перегонку указанного раствора формальдегида в присутствии захватывающего воду соединения.1. A method of separating a formaldehyde-containing product from a formaldehyde solution containing formaldehyde, water and methanol, wherein said formaldehyde-containing product contains significantly less water than said formaldehyde solution, comprising distilling said formaldehyde solution in the presence of a water-capturing compound. 2. Способ по п. 1, где указанный раствор формальдегида содержит метанол при молярном отношении метанола к формальдегиду 0,3-1,5: 1. 2. The method according to p. 1, where the specified formaldehyde solution contains methanol with a molar ratio of methanol to formaldehyde of 0.3-1.5: 1. 3. Способ по п. 2, где раствор формальдегида предварительно смешивают с некоторым количеством метанола перед процессом перегонки так, что молярное отношение метанола к формальдегиду находится в пределах 0,3-1,5: 1. 3. The method according to p. 2, where the formaldehyde solution is pre-mixed with a certain amount of methanol before the distillation process so that the molar ratio of methanol to formaldehyde is in the range of 0.3-1.5: 1. 4. Способ по любому из предшествующих пунктов, где захватывающее воду соединение содержит насыщенную или ненасыщенную карбоновую кислоту или сложный эфир или карбонильное соединение. 4. The method according to any one of the preceding paragraphs, where the water-capturing compound contains a saturated or unsaturated carboxylic acid or ester or carbonyl compound. 5. Способ по п. 4, где захватывающее воду соединение содержит метилпропионат или метилметакрилат. 5. The method of claim 4, wherein the water-capturing compound comprises methyl propionate or methyl methacrylate. 6. Способ по любому из предшествующих пунктов, где отношение захватывающего воду соединения к формальдегиду в основании колонны находится в пределах 5: 1-20: 1 по массе. 6. The method according to any one of the preceding paragraphs, where the ratio of the water-capturing compound to formaldehyde at the base of the column is in the range of 5: 1-20: 1 by weight. 7. Способ по любому из предшествующих пунктов, где жидкий побочный поток, содержащий большую часть воды, содержавшейся в указанном растворе формальдегида, отводят из процесса перегонки. 7. The method according to any one of the preceding paragraphs, where the liquid side stream containing most of the water contained in the specified formaldehyde solution is withdrawn from the distillation process. 8. Способ по любому из предшествующих пунктов, где указанный способ объединяют с дополнительным процессом, так что содержащий формальдегид продукт подают непосредственно а указанный дополнительный процесс. 8. The method according to any one of the preceding paragraphs, where the specified method is combined with an additional process, so that the product containing formaldehyde is fed directly to the specified additional process. 9. Способ по п. 8, где указанный дополнительный процесс является процессом получения метилметакрилата. 9. The method of claim 8, wherein said additional process is a process for producing methyl methacrylate. 10. Способ получения метилметакрилата путем реакции формальдегида с метилпропионатом в присутствии метанола и подходящего катализатора, где указанный формальдегид содержит содержащий формальдегид продукт, полученный из раствора формальдегида, посредством перегонки указанного раствора формальдегида в присутствии метилпропионата. 10. A method for producing methyl methacrylate by reacting formaldehyde with methyl propionate in the presence of methanol and a suitable catalyst, wherein said formaldehyde contains a formaldehyde-containing product obtained from a formaldehyde solution by distillation of said formaldehyde solution in the presence of methyl propionate. 11. Содержащий формальдегид продукт, полученный из исходного водного раствора формальдегида, который имеет более высокую концентрацию воды, чем указанный содержащий формальдегид продукт, путем перегонки указанного водного раствора формальдегида с захватывающим воду соединением. 11. Formaldehyde-containing product obtained from a starting aqueous formaldehyde solution that has a higher water concentration than said formaldehyde-containing product by distillation of said aqueous formaldehyde solution with a water-capturing compound. 12. Содержащий формальдегид продукт по п. 11, где захватывающее воду соединение содержит насыщенную или ненасыщенную карбоновую кислоту или сложный эфир или карбонильное соединение. 12. The formaldehyde-containing product of claim 11, wherein the water-capturing compound contains a saturated or unsaturated carboxylic acid or an ester or carbonyl compound. 13. Содержащий формальдегид продукт по п. 12, где захватывающее воду соединение содержит метилпропионат или метилметакрилат. 13. The formaldehyde-containing product of claim 12, wherein the water-capturing compound contains methyl propionate or methyl methacrylate.
RU2001101477/04A 1998-06-05 1999-06-01 Dehydration process RU2232744C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9812083.5A GB9812083D0 (en) 1998-06-05 1998-06-05 Removal of water
GB9812083.5 1998-06-05

Related Child Applications (1)

Application Number Title Priority Date Filing Date
RU2004103423/04A Division RU2338737C2 (en) 1998-06-05 1999-06-01 Method of obtaining formaldehyde raw material with low water content

Publications (2)

Publication Number Publication Date
RU2001101477A true RU2001101477A (en) 2003-01-20
RU2232744C2 RU2232744C2 (en) 2004-07-20

Family

ID=10833241

Family Applications (2)

Application Number Title Priority Date Filing Date
RU2004103423/04A RU2338737C2 (en) 1998-06-05 1999-06-01 Method of obtaining formaldehyde raw material with low water content
RU2001101477/04A RU2232744C2 (en) 1998-06-05 1999-06-01 Dehydration process

Family Applications Before (1)

Application Number Title Priority Date Filing Date
RU2004103423/04A RU2338737C2 (en) 1998-06-05 1999-06-01 Method of obtaining formaldehyde raw material with low water content

Country Status (19)

Country Link
US (2) US6478929B1 (en)
EP (1) EP1084095B1 (en)
JP (3) JP2002517477A (en)
KR (1) KR100407510B1 (en)
CN (2) CN1291964C (en)
AU (1) AU762099B2 (en)
BR (1) BR9910957B1 (en)
CA (1) CA2332042C (en)
CZ (1) CZ295063B6 (en)
DE (1) DE69912949T2 (en)
ES (1) ES2211193T3 (en)
GB (1) GB9812083D0 (en)
HU (1) HU227631B1 (en)
MY (1) MY129116A (en)
NZ (1) NZ508175A (en)
PL (1) PL195079B1 (en)
RU (2) RU2338737C2 (en)
TW (1) TW565550B (en)
WO (1) WO1999064387A1 (en)

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CN107337600A (en) * 2017-07-04 2017-11-10 湖北三里枫香科技有限公司 A kind of method and process unit of methanol and methyl acetate production methyl methacrylate
CN109133232A (en) * 2018-09-27 2019-01-04 南通天泽化工有限公司 A kind of recovery system and its recovery method of highly concentrated formaldehyde solution
CN113509921B (en) * 2021-07-16 2023-03-17 中国科学院兰州化学物理研究所 Bifunctional catalyst system and application thereof
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