SU445645A1 - Method for separating low molecular weight monocarboxylic acids c1-c4 from aqueous solutions - Google Patents
Method for separating low molecular weight monocarboxylic acids c1-c4 from aqueous solutionsInfo
- Publication number
- SU445645A1 SU445645A1 SU1789012A SU1789012A SU445645A1 SU 445645 A1 SU445645 A1 SU 445645A1 SU 1789012 A SU1789012 A SU 1789012A SU 1789012 A SU1789012 A SU 1789012A SU 445645 A1 SU445645 A1 SU 445645A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- molecular weight
- low molecular
- monocarboxylic acids
- aqueous solutions
- weight monocarboxylic
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
огбираюг при флегмовом числе 0,6 Из полученной смеси кислот на ректификационной колонне (10 . дериодического дайствш дри йдегмоЕОМ числе 1-2 под вакуумо;(5бОш) отгон ют 17.5 гАас летучих кислоi следующего состава (масс.гй): Муравьина кислота 42,20 Уксусна кислота 35,20 Продионова кислота 9,76 Масл на кислота 4,66 Вода0,08 Органические примеси 8,10 Регулиру количество высших жирных кислот, пoдaвэeлfiыx в ректификационную колонну, можно достичь почти полного извлечени ниэжомолекул рных монокарбоновых кислот. Например, когда при флегмовом числе равном I, додают 2; 4; 5 и 25 кг высших жирных кислот на I кг низкомолекул рных монокарбоновых кислот, пары, отход щие из колонны, содержат 0,38; 0,25, 0,06; и 0,065 кисЩ )едлагаемый способ особенно удобен дл извлечени низкомолекул рных карбоновых кислот из кислых сточных вод производства СЖ, так как высшие жирные кислоты вл ютс одним из продуктов этого производства . ПРЕДМЕТ ИЗОБРЕТЕНИЯ 1,Способ выделени низкошлекул рных монокарбоновых кислот Cj-C из водных растворов путем ректификации в присутствии раздел ющего агента, отличающийс тем, что, с целью упрощени процесса и повышени его эффективности, в качестве раздел ющего агента используют жирные кислоты Сд-Сто или их смеси. 2.Способ по П.1, отличающийс тем, что использую-г 1-25 кг жирных кислот на I кг низкомолекул рных кислот.Ogbrayug with a reflux ratio of 0.6. From the mixture of acids obtained on a distillation column (10 d.yodesic distilled dehydromem number of 1-2 under vacuum; (5 OO) 17.5 gAh of volatile acid are distilled out of the following composition (mass g): Formic acid 42.20 Acetic acid 35,20 Dipionic acid 9,76 Butyric acid 4,66 Water 0,08 Organic impurities 8,10 By adjusting the amount of higher fatty acids supplied to the distillation column, it is possible to achieve an almost complete extraction of negative molecular weight monocarboxylic acids. For example, when using phlegm equal to I, 2; 4; 5 and 25 kg of higher fatty acids per I kg of low molecular weight monocarboxylic acids are given; the vapors leaving the column contain 0.38, 0.25, 0.06; and 0.065 acid), the supplied method is especially convenient for extracting low molecular weight carboxylic acids from acid wastewater produced by LF, since higher fatty acids are one of the products of this production. SUBJECT OF INVENTION 1, A method for separating low molecular weight monocarboxylic acids Cj-C from aqueous solutions by rectification in the presence of a separating agent, characterized in that, in order to simplify the process and increase its effectiveness, Cd-100 fatty acids or their mixtures. 2. A method according to claim 1, characterized in that I use 1 to 25 kg of fatty acids per I kg of low molecular weight acids.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1789012A SU445645A1 (en) | 1972-05-25 | 1972-05-25 | Method for separating low molecular weight monocarboxylic acids c1-c4 from aqueous solutions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU1789012A SU445645A1 (en) | 1972-05-25 | 1972-05-25 | Method for separating low molecular weight monocarboxylic acids c1-c4 from aqueous solutions |
Publications (1)
Publication Number | Publication Date |
---|---|
SU445645A1 true SU445645A1 (en) | 1974-10-05 |
Family
ID=20515508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU1789012A SU445645A1 (en) | 1972-05-25 | 1972-05-25 | Method for separating low molecular weight monocarboxylic acids c1-c4 from aqueous solutions |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU445645A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4692219A (en) * | 1986-12-03 | 1987-09-08 | Celanese Chemical Co. | Separation of formic acid from acetic acid by extractive distillation |
US4729818A (en) * | 1987-04-16 | 1988-03-08 | Lloyd Berg | Dehydration of acetic acid by extractive distillation |
US4877490A (en) * | 1987-11-27 | 1989-10-31 | Lloyd Berg | Dehydration of formic acid by extractive distillation with dicarboxylic acids |
US4909907A (en) * | 1987-09-21 | 1990-03-20 | Hoechst Celanese Chemical Co. | Separation of formic acid from acetic acid by extractive distillation with acetyl salicylic acid |
US4935100A (en) * | 1989-05-30 | 1990-06-19 | Lloyd Berg | Dehydration of formic acid by extractive distillation |
US5006205A (en) * | 1987-11-27 | 1991-04-09 | Lloyd Berg | Dehydration of formic acid by extractive distillation |
-
1972
- 1972-05-25 SU SU1789012A patent/SU445645A1/en active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4692219A (en) * | 1986-12-03 | 1987-09-08 | Celanese Chemical Co. | Separation of formic acid from acetic acid by extractive distillation |
US4729818A (en) * | 1987-04-16 | 1988-03-08 | Lloyd Berg | Dehydration of acetic acid by extractive distillation |
US4909907A (en) * | 1987-09-21 | 1990-03-20 | Hoechst Celanese Chemical Co. | Separation of formic acid from acetic acid by extractive distillation with acetyl salicylic acid |
US4877490A (en) * | 1987-11-27 | 1989-10-31 | Lloyd Berg | Dehydration of formic acid by extractive distillation with dicarboxylic acids |
US5006205A (en) * | 1987-11-27 | 1991-04-09 | Lloyd Berg | Dehydration of formic acid by extractive distillation |
US4935100A (en) * | 1989-05-30 | 1990-06-19 | Lloyd Berg | Dehydration of formic acid by extractive distillation |
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