GB350904A - Improvements in or relating to the regeneration of non-aqueous solvents, such as those employed in the dry cleaning industry - Google Patents
Improvements in or relating to the regeneration of non-aqueous solvents, such as those employed in the dry cleaning industryInfo
- Publication number
- GB350904A GB350904A GB780830A GB780830A GB350904A GB 350904 A GB350904 A GB 350904A GB 780830 A GB780830 A GB 780830A GB 780830 A GB780830 A GB 780830A GB 350904 A GB350904 A GB 350904A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solvent
- acid
- regeneration
- relating
- treated
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
- D06L1/02—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using organic solvents
- D06L1/10—Regeneration of used chemical baths
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Solvents, such as are used in dry-cleaning, are regenerated by treating with about 0,05 per cent of anhydrous or concentrated acid, and after separation of the flocculated material neturalizing the free acid in the purified solvent. A used petroleum distillate is agitated with 0,05 per cent of concentrated sulphuric or phosphoric acid, or hydrochloric acid gas, and the flocculated material separated by sedimentation, centrifuging, or filtration. The supernatant solvent is then treated with ammonia or filtered through an alkaline bed, e.g. quicklime, or caustic soda or potash, or sodium carbonate to which may be added an inert filtering agent, e.g. fuller's earth or sand. The acid sludge formed in the first stage in the process may be treated with alkali and steam-distilled to recover solvent therefrom, or the sludge may be used to accelerate flocculation in a further batch of solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB780830A GB350904A (en) | 1930-03-10 | 1930-03-10 | Improvements in or relating to the regeneration of non-aqueous solvents, such as those employed in the dry cleaning industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB780830A GB350904A (en) | 1930-03-10 | 1930-03-10 | Improvements in or relating to the regeneration of non-aqueous solvents, such as those employed in the dry cleaning industry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB350904A true GB350904A (en) | 1931-06-10 |
Family
ID=9840133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB780830A Expired GB350904A (en) | 1930-03-10 | 1930-03-10 | Improvements in or relating to the regeneration of non-aqueous solvents, such as those employed in the dry cleaning industry |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB350904A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005003441A1 (en) * | 2003-06-27 | 2005-01-13 | The Procter & Gamble Company | Process for recovering a dry cleaning solvent from a mixture by modifying the mixture |
| WO2005003442A1 (en) * | 2003-06-27 | 2005-01-13 | The Procter & Gamble Company | Process for purifying a lipophilic fluid |
-
1930
- 1930-03-10 GB GB780830A patent/GB350904A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005003441A1 (en) * | 2003-06-27 | 2005-01-13 | The Procter & Gamble Company | Process for recovering a dry cleaning solvent from a mixture by modifying the mixture |
| WO2005003442A1 (en) * | 2003-06-27 | 2005-01-13 | The Procter & Gamble Company | Process for purifying a lipophilic fluid |
| US7300593B2 (en) | 2003-06-27 | 2007-11-27 | The Procter & Gamble Company | Process for purifying a lipophilic fluid |
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