GB1271104A - Process for working-up crude liquid vinyl acetate - Google Patents
Process for working-up crude liquid vinyl acetateInfo
- Publication number
- GB1271104A GB1271104A GB23224/69A GB2322469A GB1271104A GB 1271104 A GB1271104 A GB 1271104A GB 23224/69 A GB23224/69 A GB 23224/69A GB 2322469 A GB2322469 A GB 2322469A GB 1271104 A GB1271104 A GB 1271104A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vinyl acetate
- acetic acid
- water
- azeotropic distillation
- distillation column
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/36—Azeotropic distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/04—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds
- C07C67/05—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation
- C07C67/055—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation in the presence of platinum group metals or their compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/62—Use of additives, e.g. for stabilisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,271,104. Vinyl acetate. FARBENFABRIKEN BAYER A.G. 7 May, 1969 [10 May, 1968], No. 23224/69. Heading C2C. In a process for the purification of crude vinyl acetate containing acetic acid, water and ethyl acetate by azeotropic distillation of the vinyl acetate and water as the head product, and phase separation of the condensate, the vinyl acetate of this condensate is partly recycled to the azeotropic distillation column in a quantity such that the sump product contains 0À5 to 6% of water and acetic acid is obtained as the sump product. In a continuous process the tail acetic acid may be recycled through an evaporator to a reaction vessel in which vinyl acetate is prepared by reacting ethylene, acetic acid, molecular oxygen in the gaseous phase over a noble metal catalyst. A reflux ratio, based on the vinyl acetate of 3 to 8 is preferred. A second azeotropic distillation stage may be used to remove final water and acetaldehyde, and polymer impurities, and acetic acid traces are removed by a final distillation. In a modification an intermediate side stream may be withdrawn from the azeotropic distillation column and combined with the sump product to pass to an evaporator before recycling to the vinyl acetate production stage. This ethyl acetate rich liquid side stream may be taken from the distillation column, e.g. between the 8th and 16th plate of a 60 plate column.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1768412A DE1768412C3 (en) | 1968-05-10 | 1968-05-10 | Process for the production of vinyl acetate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1271104A true GB1271104A (en) | 1972-04-19 |
Family
ID=5699737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23224/69A Expired GB1271104A (en) | 1968-05-10 | 1969-05-07 | Process for working-up crude liquid vinyl acetate |
Country Status (18)
| Country | Link |
|---|---|
| JP (1) | JPS5411287B1 (en) |
| AT (1) | AT292651B (en) |
| BE (1) | BE732822A (en) |
| BG (1) | BG18854A3 (en) |
| BR (1) | BR6908673D0 (en) |
| CH (1) | CH539598A (en) |
| CS (1) | CS150977B2 (en) |
| DE (1) | DE1768412C3 (en) |
| DK (1) | DK127184B (en) |
| ES (1) | ES366991A1 (en) |
| FR (1) | FR2008280A1 (en) |
| GB (1) | GB1271104A (en) |
| LU (1) | LU58600A1 (en) |
| NL (1) | NL6907165A (en) |
| NO (1) | NO131073C (en) |
| PL (1) | PL87130B1 (en) |
| RO (1) | RO55233A (en) |
| SE (1) | SE366023B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0992483A1 (en) * | 1998-10-08 | 2000-04-12 | BP Chemicals Limited | Process for purifying a process stream |
| WO2013090241A1 (en) * | 2011-12-15 | 2013-06-20 | Celanese International Corporation | Production of diacetoxyethylene by direct acetoxylation |
| US11254636B2 (en) * | 2019-08-05 | 2022-02-22 | Lyondellbasell Acetyls, Llc | Ethyl acetate removal during VAM production |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2945913A1 (en) * | 1979-11-14 | 1981-06-04 | Hoechst Ag, 6000 Frankfurt | Separating water from vinyl acetate and acetic acid mixt. - by azeotrope-former addn. and aq. phase separation |
| DE102010001097A1 (en) | 2010-01-21 | 2011-07-28 | Wacker Chemie AG, 81737 | Process for the preparation of vinyl acetate |
-
1968
- 1968-05-10 DE DE1768412A patent/DE1768412C3/en not_active Expired
-
1969
- 1969-05-05 RO RO59887A patent/RO55233A/ro unknown
- 1969-05-07 GB GB23224/69A patent/GB1271104A/en not_active Expired
- 1969-05-08 BG BG12201A patent/BG18854A3/xx unknown
- 1969-05-08 CS CS3269*BA patent/CS150977B2/cs unknown
- 1969-05-08 LU LU58600D patent/LU58600A1/xx unknown
- 1969-05-09 SE SE06637/69A patent/SE366023B/xx unknown
- 1969-05-09 AT AT446269A patent/AT292651B/en not_active IP Right Cessation
- 1969-05-09 ES ES366991A patent/ES366991A1/en not_active Expired
- 1969-05-09 NL NL6907165A patent/NL6907165A/xx unknown
- 1969-05-09 CH CH715169A patent/CH539598A/en not_active IP Right Cessation
- 1969-05-09 JP JP3528269A patent/JPS5411287B1/ja active Pending
- 1969-05-09 BR BR208673/69A patent/BR6908673D0/en unknown
- 1969-05-09 DK DK254969AA patent/DK127184B/en unknown
- 1969-05-09 NO NO1926/69A patent/NO131073C/no unknown
- 1969-05-09 PL PL1969133449A patent/PL87130B1/pl unknown
- 1969-05-09 BE BE732822D patent/BE732822A/xx unknown
- 1969-05-09 FR FR6915119A patent/FR2008280A1/fr not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0992483A1 (en) * | 1998-10-08 | 2000-04-12 | BP Chemicals Limited | Process for purifying a process stream |
| SG82032A1 (en) * | 1998-10-08 | 2001-07-24 | Bp Chem Int Ltd | Process for purifying a process stream |
| WO2013090241A1 (en) * | 2011-12-15 | 2013-06-20 | Celanese International Corporation | Production of diacetoxyethylene by direct acetoxylation |
| US8884052B2 (en) | 2011-12-15 | 2014-11-11 | Celanese International Corporation | Production of diacetoxyethylene by direct acetoxylation |
| US11254636B2 (en) * | 2019-08-05 | 2022-02-22 | Lyondellbasell Acetyls, Llc | Ethyl acetate removal during VAM production |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1768412B2 (en) | 1973-11-15 |
| CS150977B2 (en) | 1973-09-17 |
| AT292651B (en) | 1971-09-10 |
| CH539598A (en) | 1973-07-31 |
| NO131073C (en) | 1975-04-02 |
| FR2008280A1 (en) | 1970-01-16 |
| LU58600A1 (en) | 1969-08-22 |
| NL6907165A (en) | 1969-11-12 |
| PL87130B1 (en) | 1976-06-30 |
| JPS5411287B1 (en) | 1979-05-14 |
| BE732822A (en) | 1969-11-10 |
| DK127184B (en) | 1973-10-01 |
| NO131073B (en) | 1974-12-23 |
| BG18854A3 (en) | 1975-03-20 |
| RO55233A (en) | 1973-07-20 |
| ES366991A1 (en) | 1971-06-16 |
| DE1768412C3 (en) | 1974-06-06 |
| SE366023B (en) | 1974-04-08 |
| DE1768412A1 (en) | 1971-09-30 |
| BR6908673D0 (en) | 1973-01-25 |
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