GB513541A - A process for refining phenols - Google Patents
A process for refining phenolsInfo
- Publication number
- GB513541A GB513541A GB1119738A GB1119738A GB513541A GB 513541 A GB513541 A GB 513541A GB 1119738 A GB1119738 A GB 1119738A GB 1119738 A GB1119738 A GB 1119738A GB 513541 A GB513541 A GB 513541A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenols
- alkali
- phenolate
- treated
- boiling
- 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
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C1/00—Working-up tar
-
- 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
-
- 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
- C07C37/007—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 the tar industry
Abstract
513,541. Purifying phenols. DEUTSCHE ERDOL-AKT.-GES. April 12, 1938, No. 11197. Convention date, April 27, 1937. [Class 2 (iii)] In the process of obtaining pure phenols from tar oils by extracting with alkali lye and treating the alkali phenolates with an inert adsorbent the tar oil or alkali phenolate is enriched with low-boiling phenols boiling below 220‹C. The resulting mixture is extracted with alkaline lye, and the phenolate layer treated with adsorbents, whereupon the phenols are isolated by acidification, or if dilute alkali lye is used whereby free phenols are formed by hydrolysis, by extraction with solvents, such as ether or benzol. The initial enrichment with lowboiling phenols may be effected by adding such phenols as oil or as alkali phenolate, to a tar oil or by removing components of higher boiling point. For example, lignite tar fraction boiling at 170-300‹C. is distilled to remove half the volume. The distillate boiling at 170- 240‹C. containing 20 per cent. of phenols is treated with 10 per cent. alkali lye. After standing and removing any precipitate the phenolate layer is heated at 80-90‹ with steam, and is treated with lignite coke, active carbon, Fuller's earth, diatomaceous earth, aluminium hydroxide, or silica. The refined alkali phenolate is then treated with carbon dioxide, sulphuric or hydrochloric acid, and the liberated phenols redistilled if desired after pre-treating with a small amount of formaldehyde.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DED75180D DE722411C (en) | 1937-04-27 | 1937-04-27 | Process for the purification of phenols from carbonized products, especially lignite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB513541A true GB513541A (en) | 1939-10-16 |
Family
ID=7061875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1119738A Expired GB513541A (en) | 1937-04-27 | 1938-04-12 | A process for refining phenols |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE722411C (en) |
| FR (1) | FR836526A (en) |
| GB (1) | GB513541A (en) |
| NL (1) | NL51413C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2595516A (en) * | 1948-08-11 | 1952-05-06 | Union Carbide & Carbon Corp | Process for recovery of tar acids and bases from hydrocarbon oils |
| DE1435112B1 (en) * | 1959-12-15 | 1971-02-11 | Du Pont | Process for the production of nonwovens |
| CN114797999A (en) * | 2022-04-08 | 2022-07-29 | 英颇瑞智能科技(上海)有限公司 | Method for prolonging service life of phenol refined resin in phenol-acetone synthesis |
-
1937
- 1937-04-27 DE DED75180D patent/DE722411C/en not_active Expired
-
1938
- 1938-03-26 NL NL87103A patent/NL51413C/xx active
- 1938-04-12 FR FR836526D patent/FR836526A/en not_active Expired
- 1938-04-12 GB GB1119738A patent/GB513541A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2595516A (en) * | 1948-08-11 | 1952-05-06 | Union Carbide & Carbon Corp | Process for recovery of tar acids and bases from hydrocarbon oils |
| DE1435112B1 (en) * | 1959-12-15 | 1971-02-11 | Du Pont | Process for the production of nonwovens |
| CN114797999A (en) * | 2022-04-08 | 2022-07-29 | 英颇瑞智能科技(上海)有限公司 | Method for prolonging service life of phenol refined resin in phenol-acetone synthesis |
| CN114797999B (en) * | 2022-04-08 | 2023-11-10 | 英颇瑞智能科技(上海)有限公司 | Method for prolonging service life of phenol refined resin in phenol-acetone synthesis |
Also Published As
| Publication number | Publication date |
|---|---|
| NL51413C (en) | 1941-11-15 |
| FR836526A (en) | 1939-01-19 |
| DE722411C (en) | 1942-07-17 |
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