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 solutions

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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
Application number
SU1789012A
Other languages
Russian (ru)
Inventor
Леонид Владимирович Коган
Михаил Львович Молочников
Ирина Владимировна Дейзенрот
Анатолий Никифорович Трофимов
Василий Иванович Филатов
Иосиф Миронович Болотин
Original Assignee
Ленинградский технологический институт целлюлозно-бумажной промышленности
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Ленинградский технологический институт целлюлозно-бумажной промышленности filed Critical Ленинградский технологический институт целлюлозно-бумажной промышленности
Priority to SU1789012A priority Critical patent/SU445645A1/en
Application granted granted Critical
Publication of SU445645A1 publication Critical patent/SU445645A1/en

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  • 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.

SU1789012A 1972-05-25 1972-05-25 Method for separating low molecular weight monocarboxylic acids c1-c4 from aqueous solutions SU445645A1 (en)

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

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Country Status (1)

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SU (1) SU445645A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
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

Cited By (6)

* Cited by examiner, † Cited by third party
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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