BE788550A - Procede pour separer le formaldehyde de melanges acide acetique/formaldehyde/eau - Google Patents
Procede pour separer le formaldehyde de melanges acide acetique/formaldehyde/eauInfo
- Publication number
- BE788550A BE788550A BE788550DA BE788550A BE 788550 A BE788550 A BE 788550A BE 788550D A BE788550D A BE 788550DA BE 788550 A BE788550 A BE 788550A
- Authority
- BE
- Belgium
- Prior art keywords
- formaldehyde
- acetic acid
- separating
- water mixtures
- mixtures
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
- C07C45/84—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation by azeotropic distillation
-
- 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
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712145517 DE2145517B1 (de) | 1971-09-11 | 1971-09-11 | Verfahren zur abtrennung von formaldehyd unter gewinnung reiner essigsaeure aus gemischen von essigsaeure, formeldehyd und wasser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE788550A true BE788550A (fr) | 1973-03-08 |
Family
ID=5819298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE788550D BE788550A (fr) | 1971-09-11 | Procede pour separer le formaldehyde de melanges acide acetique/formaldehyde/eau |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US3838018A (fr) |
| JP (1) | JPS4836113A (fr) |
| BE (1) | BE788550A (fr) |
| CA (1) | CA978495A (fr) |
| DE (1) | DE2145517B1 (fr) |
| FR (1) | FR2152849B1 (fr) |
| GB (1) | GB1341371A (fr) |
| IT (1) | IT969422B (fr) |
| NL (1) | NL7211884A (fr) |
| RO (1) | RO59445A (fr) |
| SU (1) | SU437269A3 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5283315A (en) * | 1975-12-29 | 1977-07-12 | Chisso Corp | Purification of acetic acid |
| US4838998A (en) * | 1985-01-09 | 1989-06-13 | Rohm And Haas Company | Process for separating sulfuric acid and carboxylic acids |
| FR3089222A1 (fr) * | 2018-11-29 | 2020-06-05 | Arkema France | Purification de solutions aqueuses contenant du formaldehyde, et utilisation de la solution purifiee dans un procede de production d’acide acrylique |
| FR3100243B1 (fr) * | 2019-08-28 | 2021-07-30 | Arkema France | Elimination du formaldehyde dans les eaux usees par un traitement d'oxydation |
-
0
- BE BE788550D patent/BE788550A/fr unknown
-
1971
- 1971-09-11 DE DE19712145517 patent/DE2145517B1/de not_active Withdrawn
-
1972
- 1972-08-18 CA CA149,695A patent/CA978495A/en not_active Expired
- 1972-08-30 GB GB4020872A patent/GB1341371A/en not_active Expired
- 1972-08-31 NL NL7211884A patent/NL7211884A/xx unknown
- 1972-09-06 SU SU1827723A patent/SU437269A3/ru active
- 1972-09-08 JP JP47090275A patent/JPS4836113A/ja active Pending
- 1972-09-08 IT IT52630/72A patent/IT969422B/it active
- 1972-09-08 US US00287477A patent/US3838018A/en not_active Expired - Lifetime
- 1972-09-11 RO RO72192A patent/RO59445A/ro unknown
- 1972-09-11 FR FR7232149A patent/FR2152849B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3838018A (en) | 1974-09-24 |
| RO59445A (fr) | 1976-02-15 |
| FR2152849B1 (fr) | 1978-02-10 |
| JPS4836113A (fr) | 1973-05-28 |
| DE2145517B1 (de) | 1973-01-25 |
| DE2145517A1 (fr) | 1973-01-25 |
| FR2152849A1 (fr) | 1973-04-27 |
| IT969422B (it) | 1974-03-30 |
| NL7211884A (fr) | 1973-03-13 |
| CA978495A (en) | 1975-11-25 |
| GB1341371A (en) | 1973-12-19 |
| SU437269A3 (ru) | 1974-07-25 |
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