GB1293848A - Recovery of acrylic acid - Google Patents
Recovery of acrylic acidInfo
- Publication number
- GB1293848A GB1293848A GB2209370A GB2209370A GB1293848A GB 1293848 A GB1293848 A GB 1293848A GB 2209370 A GB2209370 A GB 2209370A GB 2209370 A GB2209370 A GB 2209370A GB 1293848 A GB1293848 A GB 1293848A
- Authority
- GB
- United Kingdom
- Prior art keywords
- product
- acrylic acid
- dew
- precooling
- point
- 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
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
Abstract
1293848 Acrylic acid TOYO SODA MFG CO Ltd 7 May 1970 [8 May 1969] 22093/70 Heading C2C In a process for the recovery of acrylic acid from a gaseous reaction product, obtained, for example, by the oxidation of acrolein and propylene, the product is indirectly pre-cooled with a coolant above the dew-point of the product, atomizing an aqueous solution of a volatile and a non-volatile polymerization inhibitor in a stream of the precooled product to cause at least the water and volatile inhibitor in the solution to evaporate and further precool the product to a temperature above its dew-point, and introducing this product into an indirectly cooled condenser at a flow rate of at least 20 metres/sec. to cause the acrylic acid to condense. The precooling temperature is chosen to minimize the period at which the product is in the gaseous phase at a temperature near its dew-point. The precooling and condensation treatment may be repeated and the uncondensed product may be passed to an absorption column to obtain the residual acrylic acid. A suitable apparatus comprising a precooling condenser, two indirect coolers and an absorption column, is described.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3532669A JPS4810452B1 (en) | 1969-05-08 | 1969-05-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1293848A true GB1293848A (en) | 1972-10-25 |
Family
ID=12438679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2209370A Expired GB1293848A (en) | 1969-05-08 | 1970-05-07 | Recovery of acrylic acid |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS4810452B1 (en) |
| GB (1) | GB1293848A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0009545A1 (en) * | 1978-09-13 | 1980-04-16 | The Standard Oil Company | Acrylic acid recovery with recycle quench |
| US6414190B1 (en) * | 1998-07-22 | 2002-07-02 | Basf Aktiengesellschaft | Purification of acrylic acid by crystallization by means of vacuum evaporation |
| WO2006014053A1 (en) * | 2004-08-02 | 2006-02-09 | Lg Chem, Ltd. | Method for producing (meth)acrylic acid |
-
1969
- 1969-05-08 JP JP3532669A patent/JPS4810452B1/ja active Pending
-
1970
- 1970-05-07 GB GB2209370A patent/GB1293848A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0009545A1 (en) * | 1978-09-13 | 1980-04-16 | The Standard Oil Company | Acrylic acid recovery with recycle quench |
| US6414190B1 (en) * | 1998-07-22 | 2002-07-02 | Basf Aktiengesellschaft | Purification of acrylic acid by crystallization by means of vacuum evaporation |
| WO2006014053A1 (en) * | 2004-08-02 | 2006-02-09 | Lg Chem, Ltd. | Method for producing (meth)acrylic acid |
| US7632968B2 (en) | 2004-08-02 | 2009-12-15 | Lg Chem, Ltd. | Method for producing (meth) acrylic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4810452B1 (en) | 1973-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES394778A1 (en) | System for the liquid-phase removal of a component from the gas stream especially the absorption of sulfur trioxide in sulfuric acid | |
| GB1180100A (en) | A process for Recovering Acrolein | |
| US2926999A (en) | Recovery of sulfur dioxide from waste gases | |
| GB1293848A (en) | Recovery of acrylic acid | |
| GB1397332A (en) | Method and apparatus for the desalination of saline water | |
| US2325576A (en) | Recovery of olefin oxides | |
| GB1247951A (en) | Process for preparing melamine from urea | |
| US2169210A (en) | Recovery of olefin oxides from | |
| Herman et al. | Note on the Infra‐Red Absorption Spectra of the Vapors of DCOOH and DCOOD | |
| IE35308L (en) | Urea production | |
| GB1402116A (en) | Methods and apparatus for the distillation of liquids | |
| US3016985A (en) | Method of recovery of acetylene and ethylene | |
| US2086731A (en) | Recovery of hydrocyanic acid | |
| US3620031A (en) | Urea plant ammonium recovery system | |
| GB1103351A (en) | Method of preparing urea | |
| GB1134849A (en) | Urea synthesis process | |
| US2862854A (en) | Purification of acetic acid employing hydroxylamine acetate as purifying agent | |
| Patty et al. | The infrared spectrum and molecular structure of carbonylbromofluoride | |
| GB1241313A (en) | Countercurrent gas-liquid contacting process | |
| GB956179A (en) | Acetylene recovery process | |
| GB967029A (en) | Evaporation process | |
| US1331105A (en) | Process for the recovery of nitrous oxids | |
| GB993263A (en) | Process for removing solute from solutions | |
| US2960386A (en) | Process for the recovery of nitric oxide | |
| FR2006968A1 (en) | Avoiding precipitation in ammonation appts in soda - factories |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |