GB520198A - The extraction of phenols from aqueous solution - Google Patents
The extraction of phenols from aqueous solutionInfo
- Publication number
- GB520198A GB520198A GB2984838A GB2984838A GB520198A GB 520198 A GB520198 A GB 520198A GB 2984838 A GB2984838 A GB 2984838A GB 2984838 A GB2984838 A GB 2984838A GB 520198 A GB520198 A GB 520198A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenols
- extraction
- esters
- ester
- oct
- 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
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/005—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up
- C07C37/009—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by obtaining phenols from products, waste products or side-products of processes, not directed to the production of phenols, by conversion or working-up from waste water
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/72—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by liquid-liquid treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Treating Waste Gases (AREA)
Abstract
520,198. Extraction of phenols. I.G. FARBENINDUSTRIE AKT.-GES. Oct. 14, 1938, No. 29848. Convention date, Oct. 14, 1937. [Class 2 (iii)] Phenols are extracted from aqueous solution thereof by a liquid ester of carboxylic acids the boiling point of which is sufficiently below the boiling point of the phenols to permit separation of the esters from the phenols by distillation. The aqueous phenolic solution may result from carbonization of coal, hydrogenation, or the preparation of phenols from halogen benzenes or benzene sulphonic acids. Suitable esters are ethyl and butyl acetate. Any ester left in the water after extraction may be recovered by steam distillation, or by active carbon or by salting out. The ester may be employed in admixture with a solvent miscible therewith but insoluble in water, e.g. benzene or toluene. Continuous extraction may be performed by causing the phenolic liquors to enter a tower at the top and the esters at the bottom.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI59286D DE705275C (en) | 1937-10-15 | 1937-10-15 | Process for the production of phenols from gases and liquids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB520198A true GB520198A (en) | 1940-04-17 |
Family
ID=7194975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2984838A Expired GB520198A (en) | 1937-10-15 | 1938-10-14 | The extraction of phenols from aqueous solution |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE705275C (en) |
| FR (1) | FR844679A (en) |
| GB (1) | GB520198A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE744823C (en) * | 1940-04-24 | 1944-01-26 | Metallgesellschaft Ag | Process for the production of phenols from phenol-containing oils, tars or the like. |
| DE763626C (en) * | 1942-01-29 | 1953-03-30 | Metallgesellschaft Ag | Process for the production of phenols from phenol-containing waters |
-
1937
- 1937-10-15 DE DEI59286D patent/DE705275C/en not_active Expired
-
1938
- 1938-10-13 FR FR844679D patent/FR844679A/en not_active Expired
- 1938-10-14 GB GB2984838A patent/GB520198A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE705275C (en) | 1941-04-23 |
| FR844679A (en) | 1939-07-31 |
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