GB605635A - Improvements in or relating to process for recovery of phenols - Google Patents
Improvements in or relating to process for recovery of phenolsInfo
- Publication number
- GB605635A GB605635A GB96/46A GB9646A GB605635A GB 605635 A GB605635 A GB 605635A GB 96/46 A GB96/46 A GB 96/46A GB 9646 A GB9646 A GB 9646A GB 605635 A GB605635 A GB 605635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ammonia
- liquor
- phenols
- solvent
- caustic solution
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Extraction Or Liquid Replacement (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Phenols are extracted from coke-plant ammonia liquor containing the same and also hydrogen sulphide by dissolving ammonia in the said liquor and maintaining the ammonia content of the liquor while being extracted with a benzol solvent sufficiently high to provide to the said hydrogen sulphide an increased resistance to absorption in the solvent, and scrubbing the ammoniated liquor with the said solvent to extract thereby phenols; scrubbing the phenolized solvent with an aqueous caustic solution and thereby forming alkali phenate in the said caustic solution, the free phenols being separated from the said caustic solution by treatment with an acidic reagent. The concentration of ammonia as ammonium salts in the liquor is at least one-tenth mole. per litre and, by the ammonia addition step, the ratio of ammonia as ammonium hydroxide to ammonia as ammonium salts is increased by the ammonia addition step at least one-tenth of a unit and to the most about five to one. A detailed example is given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US605635XA | 1944-05-03 | 1944-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB605635A true GB605635A (en) | 1948-07-28 |
Family
ID=22030301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB96/46A Expired GB605635A (en) | 1944-05-03 | 1946-01-01 | Improvements in or relating to process for recovery of phenols |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB605635A (en) |
-
1946
- 1946-01-01 GB GB96/46A patent/GB605635A/en not_active Expired
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