GB355445A - Improvements in the extraction of phenol, phenol homologues and other hydroxy aromatic compounds from tar oils and mineral oils - Google Patents
Improvements in the extraction of phenol, phenol homologues and other hydroxy aromatic compounds from tar oils and mineral oilsInfo
- Publication number
- GB355445A GB355445A GB2077630A GB2077630A GB355445A GB 355445 A GB355445 A GB 355445A GB 2077630 A GB2077630 A GB 2077630A GB 2077630 A GB2077630 A GB 2077630A GB 355445 A GB355445 A GB 355445A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oils
- phenol
- tar
- phenols
- distillation
- 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
- C07C37/006—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 petroleum industry
-
- 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
Aqueous alkaline solutions of phenols, phenol homologues and other hydroxy aromatic compounds occurring in tar oils and particularly in tar oils which are obtained from vertical retorts and from low-temperature processes of coal distillations and also tars from mineral oils such as cracked mineral oils are subjected to distillation under a pressure substantially less than atmospheric pressure to remove volatile impurities. The phenols are then liberated by known processes such as the addition of sulphuric acid or carbon dioxide, separated from the aqueous liquid and fractionated at appropriate temperatures and pressures. The distillation may be accompanied by oxidation or reduction which may be effected by the addition of oxydizing or reducing agents to the aqueous alkaline solution or oxidation or reduction may be effected before or after the distillation in which case they may also be carried out by electrolytic means. The tar oils may be subjected to heat treatment prior to extracting the phenols with caustic soda. In the example a sodium cresylate solution obtained by washing tar oil with aqueous caustic alkali is allowed to settle and then boiled vigorously in a vacuum pan; the refined sodium cresylate can be decomposed by known processes and distilled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2077630A GB355445A (en) | 1930-07-09 | 1930-07-09 | Improvements in the extraction of phenol, phenol homologues and other hydroxy aromatic compounds from tar oils and mineral oils |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2077630A GB355445A (en) | 1930-07-09 | 1930-07-09 | Improvements in the extraction of phenol, phenol homologues and other hydroxy aromatic compounds from tar oils and mineral oils |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB355445A true GB355445A (en) | 1931-08-27 |
Family
ID=10151490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2077630A Expired GB355445A (en) | 1930-07-09 | 1930-07-09 | Improvements in the extraction of phenol, phenol homologues and other hydroxy aromatic compounds from tar oils and mineral oils |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB355445A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107474864A (en) * | 2016-06-07 | 2017-12-15 | 神华集团有限责任公司 | The rudimentary phenol that a kind of coal tar produces the method for rudimentary phenol and obtained by this method |
-
1930
- 1930-07-09 GB GB2077630A patent/GB355445A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107474864A (en) * | 2016-06-07 | 2017-12-15 | 神华集团有限责任公司 | The rudimentary phenol that a kind of coal tar produces the method for rudimentary phenol and obtained by this method |
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