GB344282A - Process of purifying aqueous liquids, particularly waste water from factories - Google Patents
Process of purifying aqueous liquids, particularly waste water from factoriesInfo
- Publication number
- GB344282A GB344282A GB13449/30A GB1344930A GB344282A GB 344282 A GB344282 A GB 344282A GB 13449/30 A GB13449/30 A GB 13449/30A GB 1344930 A GB1344930 A GB 1344930A GB 344282 A GB344282 A GB 344282A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- adsorbent
- liquid
- adsorption
- factories
- 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
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/82—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by solid-liquid treatment; by chemisorption
-
- 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)
- Gas Separation By Absorption (AREA)
Abstract
The process of the parent Specification according to which aqueous liquids, particularly waste waters from coking plant or from cellulose or other factories, are treated with an absorbent, from which the absorbed constituents, for example phenols, are subsequently extracted by means of a solvent, retained solvent being finally driven off as by means of steam, is carried out so that access of air or other gases to the adsorbent is prevented, as far as possible, during the adsorption and extraction stages and particularly during the transition from one stage to another. When the aqueous liquid is passed upward through the adsorbent, the liquid in the treatment vessel at the termination of a treatment period is covered with a layer of the solvent and the solvent follows the liquid downward as it is withdrawn from below. The adsorption and extraction may be effected at raised temperatures, for example 40 DEG to 80 DEG C., and one of these temperatures may be higher than another.ALSO:The process of the parent Specification according to which aqueous liquids, particularly waste waters from coking plant or from cellulose or other factories, are treated with an adsorbent, from which the adsorbed constituents, for example, phenols, are subsequently extracted by means of a solvent, retained solvent being finally driven off as by means of steam, is carried out so that access of air or other gases to the adsorbent is prevented, as far as possible, during the adsorption and extraction stages and particularly during the transition from one stage to another. Where the aqueous liquid is passed upward through the adsorbent, the liquid in the treatment vessel at the termination of a treatment period is covered with a layer of the solvent and the solvent follows the liquid downward as it is withdrawn from below. The adsorption and extraction may be effected at raised temperatures, for example 40 to 80 DEG C., and one of these temperatures may be higher than another.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE344282X | 1929-06-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB344282A true GB344282A (en) | 1931-03-05 |
Family
ID=6251016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13449/30A Expired GB344282A (en) | 1929-06-29 | 1930-05-01 | Process of purifying aqueous liquids, particularly waste water from factories |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB344282A (en) |
-
1930
- 1930-05-01 GB GB13449/30A patent/GB344282A/en not_active Expired
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