GB690607A - A method of freeing industrial waste waters from phenols - Google Patents
A method of freeing industrial waste waters from phenolsInfo
- Publication number
- GB690607A GB690607A GB25266/51A GB2526651A GB690607A GB 690607 A GB690607 A GB 690607A GB 25266/51 A GB25266/51 A GB 25266/51A GB 2526651 A GB2526651 A GB 2526651A GB 690607 A GB690607 A GB 690607A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- cycle
- stages
- lye
- plant
- 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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/26—Treatment of water, waste water, or sewage by extraction
-
- 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
- C07C37/685—Processes comprising at least two steps in series
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
<PICT:0690607/IV (b)/1> Phenols are extracted from industrial waste waters with low boiling-point solvents, e.g. butyl acetate, in two cycles, the bulk of phenol being removed, e.g. down to 50-100 milligrams/litre, from the water in the first cycle in which the solvent is used in small quantity, e.g. 10-20 per cent of volume of water under treatment and recovered by distillation and the residual quantities of phenol being removed e.g. down to 1 milligram/litre or less from the water in the second cycle in which the solvent used in large quantities, e.g. 100-300 per cent by volume is recovered by extraction with a stoichiometrical excess of lye. The cycles are so combined that the solvent in the first cycle is derived from the charged solvent from the second cycle and the solvent recovered from the first cycle by distillation is fed to the second cycle. The diagram illustrates a plant in which the first cycle A consists of four stages 2, 3, 4, 5 and the second cycle B consists of two stages 6, 7 each of the stages being constructed in known manner so that the water from the input 1 of the plant flows in counter-current to the solvent and is freed from the solvent at the end of each stage, leaving the plant at 8. The charged solvent from the first cycle which passes through the stages in succession is separated from the phenols in a distillation plant 9, the phenols leaving the plant at 18 while the solvent is fed at 13 into the solvent circuit of the second cycle B. After each of the stages 6, 7 the solvent is treated with a stoichiometrical excess of lye in co-current in stages 11, 12 for example, in washing towers packed with Raschig rings so as to ensure that the solvent is mechanically free from phenolate lye. The lye required for stages 11 and 12 is introduced at 16 and recycled several times through the stages 11, 12 and a small quantity which contains relatively small amounts of phenol is removed at 17. The solvent for the first cycle is taken from the stage 6 before treatment with lye in the stage 11. Alternatively, the solvent output from the distiller 9 may be fed back to the stage 5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE690607X | 1948-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB690607A true GB690607A (en) | 1953-04-22 |
Family
ID=6599837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25266/51A Expired GB690607A (en) | 1948-10-01 | 1951-10-29 | A method of freeing industrial waste waters from phenols |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB690607A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209647A (en) * | 1978-06-22 | 1980-06-24 | American Can Company | Fractionation of oil obtained by pyrolysis of lignocellulosic materials to recover a phenolic fraction for use in making phenol-formaldehyde resins |
| CN109553236A (en) * | 2018-05-31 | 2019-04-02 | 张庆华 | The process flow containing ammonia nitrogen, phenol wastewater is administered in controllable concentration |
-
1951
- 1951-10-29 GB GB25266/51A patent/GB690607A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4209647A (en) * | 1978-06-22 | 1980-06-24 | American Can Company | Fractionation of oil obtained by pyrolysis of lignocellulosic materials to recover a phenolic fraction for use in making phenol-formaldehyde resins |
| CN109553236A (en) * | 2018-05-31 | 2019-04-02 | 张庆华 | The process flow containing ammonia nitrogen, phenol wastewater is administered in controllable concentration |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4162902A (en) | Removing phenols from waste water | |
| GB1247226A (en) | A process and equipment for removing sulphur-oxygen compounds from waste gases | |
| ES388730A1 (en) | Process for recovering polymers from organic solutions | |
| GB1210446A (en) | Continuous process for the purification of phosphoric acid | |
| GB1352759A (en) | Processing of coke oven gas | |
| GB690607A (en) | A method of freeing industrial waste waters from phenols | |
| GB911936A (en) | Improvements in the purification of hydrogen peroxide | |
| GB970633A (en) | Method of preparing acrylonitrile free from acetonitrile | |
| US2767216A (en) | Drying of acrolein by extractive separation with glycerol | |
| US2783287A (en) | Purification of crude anthracene | |
| US3669847A (en) | Process for separating steam-volatile organic solvents from industrial process waste waters | |
| US2675412A (en) | Method for the recovery of solvents from waste gases resulting in extraction processes | |
| GB829801A (en) | Improvements in or relating to ammonia still apparatus | |
| US1813946A (en) | Process for extracting acetylene of high value from gases poor in acetylene | |
| US1961165A (en) | Process for recovering phenols from phenol-carrying distillation gas and the like | |
| GB1051764A (en) | ||
| GB716886A (en) | Improvements in or relating to the separation of phenols from waste water | |
| ES8504655A1 (en) | Removal of insaponifiable water-insoluble impurities from mixture of cyclohexanone and cyclohexanol | |
| US2206490A (en) | Recovery of acetylene | |
| US1107175A (en) | Method of treating distillery-wash. | |
| US2623845A (en) | Distillation of wood carbonization | |
| GB515429A (en) | Improved treatment of waste acids containing nitric acid | |
| GB1017106A (en) | Process for the preparation of substantially pure ammonia | |
| US3376693A (en) | Process for the recovery of acetylene from gaseous mixtures containing same | |
| JPS5547118A (en) | Purification of gas containing impurity |