GB1134582A - A process for the removal of corrosive contaminants from sulfolane-type solvents - Google Patents
A process for the removal of corrosive contaminants from sulfolane-type solventsInfo
- Publication number
- GB1134582A GB1134582A GB1580167A GB1580167A GB1134582A GB 1134582 A GB1134582 A GB 1134582A GB 1580167 A GB1580167 A GB 1580167A GB 1580167 A GB1580167 A GB 1580167A GB 1134582 A GB1134582 A GB 1134582A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulpholane
- solvent
- aqueous
- alkali
- type
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/46—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings substituted on the ring sulfur atom
- C07D333/48—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings substituted on the ring sulfur atom by oxygen atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,134,582. Purification of sulpholane-type solvents. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 6 April, 1967, No. 15801/67. Heading C2C. Sulpholane-type solvents containing corrosive contaminants are purified by contact with an aqueous solution containing an alkaline compound and with an alkali-resistant liquid, which is sparingly soluble in water and which dissolves the sulpholane-type solvent more readily than water, separating a solvent phase containing alkali-resistant liquid from the aqueous phase and subsequently recovering the sulpholane-type solvent from the solvent phase. The preferred alkali-resistant liquids are hydrocarbons, e.g. benzene. The aqueous alkaline solution is suitably provided by dilute aqueous solution of an alkali or alkaline earth metal salt, e.g. NaOH. The aqueous alkaline solution preferably also contains a neutral salt, e.g. NaC1, to counteract the formation of emulsions and facilitate gravity separation of the aqueous and solvent phases. It is preferred to separate the sulpholane from the solvent phase by distillation. The process is illustrated by reference to schematic flow diagrams (not shown).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1580167A GB1134582A (en) | 1967-04-06 | 1967-04-06 | A process for the removal of corrosive contaminants from sulfolane-type solvents |
DE19681768144 DE1768144A1 (en) | 1967-04-06 | 1968-04-04 | Process for regenerating sulfolane-type solvents |
FR1575672D FR1575672A (en) | 1967-04-06 | 1968-04-04 | |
NL6804724A NL160823C (en) | 1967-04-06 | 1968-04-04 | PROCESS FOR THE REMOVAL OF CONTAMINANTS FROM SULPHOLAN-TYPE SOLVENTS. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1580167A GB1134582A (en) | 1967-04-06 | 1967-04-06 | A process for the removal of corrosive contaminants from sulfolane-type solvents |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1134582A true GB1134582A (en) | 1968-11-27 |
Family
ID=10065715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1580167A Expired GB1134582A (en) | 1967-04-06 | 1967-04-06 | A process for the removal of corrosive contaminants from sulfolane-type solvents |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE1768144A1 (en) |
FR (1) | FR1575672A (en) |
GB (1) | GB1134582A (en) |
NL (1) | NL160823C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3406762A4 (en) * | 2016-03-22 | 2019-08-28 | Kurita Water Industries Ltd. | Method for reducing corrosive ions in aromatic compound extraction solvent |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2163741B (en) * | 1984-08-31 | 1987-12-02 | El Paso Products Co | Recovery of sulfolane |
CH668260A5 (en) * | 1986-08-25 | 1988-12-15 | Ciba Geigy Ag | PROCESS FOR WORKING UP REACTION RESIDUE FROM CYANURFLUORIDE PRODUCTION. |
-
1967
- 1967-04-06 GB GB1580167A patent/GB1134582A/en not_active Expired
-
1968
- 1968-04-04 NL NL6804724A patent/NL160823C/en not_active IP Right Cessation
- 1968-04-04 DE DE19681768144 patent/DE1768144A1/en active Pending
- 1968-04-04 FR FR1575672D patent/FR1575672A/fr not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3406762A4 (en) * | 2016-03-22 | 2019-08-28 | Kurita Water Industries Ltd. | Method for reducing corrosive ions in aromatic compound extraction solvent |
Also Published As
Publication number | Publication date |
---|---|
FR1575672A (en) | 1969-07-25 |
NL160823C (en) | 1979-12-17 |
NL6804724A (en) | 1968-10-07 |
DE1768144A1 (en) | 1971-04-29 |
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