GB445108A - Improvements in the recovery of acidic and basic reagents - Google Patents
Improvements in the recovery of acidic and basic reagentsInfo
- Publication number
- GB445108A GB445108A GB2817234A GB2817234A GB445108A GB 445108 A GB445108 A GB 445108A GB 2817234 A GB2817234 A GB 2817234A GB 2817234 A GB2817234 A GB 2817234A GB 445108 A GB445108 A GB 445108A
- Authority
- GB
- United Kingdom
- Prior art keywords
- distillation
- recovered
- acid
- ammonia
- acetic acid
- 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
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/02—Preparation of carboxylic acids or their salts, halides or anhydrides from salts of carboxylic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Volatile organic acids and volatile bases are recovered from their salts with one another by heating the salts in presence of a substance non-volatile under the conditions employed and which forms with the organic acid a compound which is stable under the conditions necessary for distilling off the base. The process is described with reference to ammonium acetate, but is also applicable to aliphatic amine acetates and to propionates, butyrates, &c. of methylamines, ethylamines, ethylene diamine and other volatile bases. Ammonia and acetic acid may be recovered by distillation of ammonium acetate solution with sodium or potassium acetate or both, the mixtures facilitating the recovery of the acid owing to their ready fusibility; and inert substances which reduce the melting point may also be added. The acetic acid may be recovered by continuing the distillation after the removal of the ammonia, or may be extracted with a suitable solvent. The process may be effected as described in Specification 439,764, the ammonium acetate solution being fed in to the heated sodium acetate at such rate that the mixture remains at all stages substantially dry. In an example, a solution containing ammonium, sodium, and potassium acetates is distilled until the temperature reaches 150 DEG C. to remove ammonia, and the distillation is continued under vacuum until the temperature reaches 250 DEG C. to remove acetic acid. The acid distillate is fractionated, the residue, which is chiefly acetamide, being added to the acetates left in the first distillation and used again. Specification 436,224 also is referred to.ALSO:Volatile organic acids and volatile bases are recovered from their salts with one another by heating the salts in presence of a substance non-volatile under the conditions employed and which forms with the organic acid a compound which is stable under the conditions necessary for distilling off the base. The process is described with reference to ammonium acetate, Ammonia and acetic acid may be recovered by distillation of ammonium acetate solution with sodium or potassium acetate or both, the mixtures facilitating the recovery of the acid owing to their ready fusibility; and inert substances which reduce the melting point may also be added. The acetic acid may be recovered by continuing the distillation after the removal of the ammonia or may be extracted with a suitable solvent. The process may be effected as described in Specification 439,764, [Group IV], the ammonium acetate solution being fed on to the heated sodium acetate at such rate that the mixture remains at all stages substantially dry. In an example, a solution containing ammonium, sodium, and potassium acetates is distilled until the temperature reaches 150 DEG C. to remove ammonia, and the distillation is continued under vacuum until the temperature reached 250 DEG C. to remove acetic acid. The acid distillate is fractionated, the residue which is chiefly acetamide, being added to the acetates left in the first distillation and used again. Specification 436,224 also is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2817234A GB445108A (en) | 1934-10-02 | 1934-10-02 | Improvements in the recovery of acidic and basic reagents |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2817234A GB445108A (en) | 1934-10-02 | 1934-10-02 | Improvements in the recovery of acidic and basic reagents |
Publications (1)
Publication Number | Publication Date |
---|---|
GB445108A true GB445108A (en) | 1936-04-02 |
Family
ID=10271420
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2817234A Expired GB445108A (en) | 1934-10-02 | 1934-10-02 | Improvements in the recovery of acidic and basic reagents |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB445108A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488386A (en) * | 1967-06-09 | 1970-01-06 | Quaker Oats Co | Process for recovering acetic acid |
US4508688A (en) * | 1983-05-31 | 1985-04-02 | At&T Technologies, Inc. | Method of regenerating acetate in a metal removal process |
WO1999000512A2 (en) * | 1997-06-30 | 1999-01-07 | The Texas A & M University System | Method for conversion of biomass to chemicals and fuels |
US6478965B1 (en) | 1997-06-30 | 2002-11-12 | The Texas A&M University System | Recovery of fermentation salts from dilute aqueous solutions |
CN111689635A (en) * | 2020-06-10 | 2020-09-22 | 南京工业大学 | Method for treating waste water containing ammonium acetate |
-
1934
- 1934-10-02 GB GB2817234A patent/GB445108A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488386A (en) * | 1967-06-09 | 1970-01-06 | Quaker Oats Co | Process for recovering acetic acid |
US4508688A (en) * | 1983-05-31 | 1985-04-02 | At&T Technologies, Inc. | Method of regenerating acetate in a metal removal process |
WO1999000512A2 (en) * | 1997-06-30 | 1999-01-07 | The Texas A & M University System | Method for conversion of biomass to chemicals and fuels |
WO1999000512A3 (en) * | 1997-06-30 | 1999-04-01 | Texas A & M Univ Sys | Method for conversion of biomass to chemicals and fuels |
US6043392A (en) * | 1997-06-30 | 2000-03-28 | Texas A&M University System | Method for conversion of biomass to chemicals and fuels |
US6262313B1 (en) | 1997-06-30 | 2001-07-17 | Texas A&M University System | Thermal conversion of fatty acid salts to ketones |
US6478965B1 (en) | 1997-06-30 | 2002-11-12 | The Texas A&M University System | Recovery of fermentation salts from dilute aqueous solutions |
CN111689635A (en) * | 2020-06-10 | 2020-09-22 | 南京工业大学 | Method for treating waste water containing ammonium acetate |
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