GB815754A - Process for extracting phenols from phenolic oils - Google Patents
Process for extracting phenols from phenolic oilsInfo
- Publication number
- GB815754A GB815754A GB3442055A GB3442055A GB815754A GB 815754 A GB815754 A GB 815754A GB 3442055 A GB3442055 A GB 3442055A GB 3442055 A GB3442055 A GB 3442055A GB 815754 A GB815754 A GB 815754A
- Authority
- GB
- United Kingdom
- Prior art keywords
- phenols
- metal carbonate
- extraction
- oil
- carbonate 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
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Natural products OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 title abstract 13
- 239000003921 oil Substances 0.000 title abstract 9
- 150000002989 phenols Chemical class 0.000 title abstract 5
- 238000000034 method Methods 0.000 title abstract 3
- 229910000288 alkali metal carbonate Inorganic materials 0.000 abstract 4
- 150000008041 alkali metal carbonates Chemical class 0.000 abstract 4
- 238000000605 extraction Methods 0.000 abstract 4
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 abstract 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 2
- 239000001569 carbon dioxide Substances 0.000 abstract 2
- 239000003077 lignite Substances 0.000 abstract 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-M phenolate Chemical compound [O-]C1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-M 0.000 abstract 2
- 229940031826 phenolate Drugs 0.000 abstract 2
- 229940108066 Coal Tar Drugs 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 238000003763 carbonization Methods 0.000 abstract 1
- 239000003245 coal Substances 0.000 abstract 1
- 239000011280 coal tar Substances 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 239000000284 extract Substances 0.000 abstract 1
- 238000005984 hydrogenation reaction Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000001264 neutralization Effects 0.000 abstract 1
- 230000020477 pH reduction Effects 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
- 239000003643 water by type Substances 0.000 abstract 1
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
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/86—Purification; separation; Use of additives, e.g. for stabilisation by treatment giving rise to a chemical modification
Abstract
<PICT:0815754/IV (b)/1> Phenols are extracted by treating phenolic oils with aqueous alkali-metal carbonate solution under pressure and at temperatures over 100 DEG C. in a vertical column 1 containing two separate layers of packing bodies located one above the other, the upper layer being fed from above with the alkali-metal carbonate solution via 7 and the lower layer with the phenolic oil via 8, while steam is blown in below the lower layer of packing bodies at 9, a mixture of steam and oil vapour and carbon dioxide gas being drawn off at the top of the column without reflux via 2 and a phenolate solution being withdrawn from the bottom of the column via 11. The phenols may be obtained from the phenolate solution by acidification with the carbon dioxide released during the extraction, and the alkali-metal carbonate solution thus obtained may be recycled to the extraction. The steam and oil vapour from the top of the column are condensed and collected at 4 and include neutral oil containing phenols which may be totally or partially recycled to the extraction. Selective dephenolization may be effected by using less alkali-metal carbonate solution than is required for complete dephenolization, the lower-boiling phenols tending to be preferentially extracted. Phenolic oils mentioned for use in the process are coal-tar fractions, oils from low temperature carbonization of brown coal and from the hydrogenation of coal and brown coal, and an oil obtained by distillation of the extraction medium from extracts obtained by extracting waters containing phenol with butyl acetate according to the so-called phenol solvane process. Examples are given.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB815754A true GB815754A (en) | 1959-07-01 |
Family
ID=1743905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3442055A Expired GB815754A (en) | 1955-12-01 | Process for extracting phenols from phenolic oils |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB815754A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2460282A1 (en) * | 1979-07-02 | 1981-01-23 | Koppers Co Inc | PROCESS FOR SEPARATING CRESOL FROM O-ETHYLPHENOL AND 2,6-XYLENOL |
| CN102659204A (en) * | 2012-05-11 | 2012-09-12 | 青岛科技大学 | Method for treating waste water in coal chemical industry |
| CN111689837A (en) * | 2020-06-10 | 2020-09-22 | 山西永东化工股份有限公司 | Coking crude phenol production method and production device capable of effectively reducing discharge of three wastes |
| CN115260003A (en) * | 2022-07-22 | 2022-11-01 | 煤炭科学技术研究院有限公司 | Coal pyrolysis/gasification crude phenol impurity removal method and impurity removal system |
-
1955
- 1955-12-01 GB GB3442055A patent/GB815754A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2460282A1 (en) * | 1979-07-02 | 1981-01-23 | Koppers Co Inc | PROCESS FOR SEPARATING CRESOL FROM O-ETHYLPHENOL AND 2,6-XYLENOL |
| CN102659204A (en) * | 2012-05-11 | 2012-09-12 | 青岛科技大学 | Method for treating waste water in coal chemical industry |
| CN111689837A (en) * | 2020-06-10 | 2020-09-22 | 山西永东化工股份有限公司 | Coking crude phenol production method and production device capable of effectively reducing discharge of three wastes |
| CN115260003A (en) * | 2022-07-22 | 2022-11-01 | 煤炭科学技术研究院有限公司 | Coal pyrolysis/gasification crude phenol impurity removal method and impurity removal system |
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