RU96100849A - METHOD FOR ISOLATING BY RECTIFICATION (MET) OF ACRYLIC ACID FROM CONTAINING ITS MIXTURE - Google Patents

METHOD FOR ISOLATING BY RECTIFICATION (MET) OF ACRYLIC ACID FROM CONTAINING ITS MIXTURE

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Publication number
RU96100849A
RU96100849A RU96100849/04A RU96100849A RU96100849A RU 96100849 A RU96100849 A RU 96100849A RU 96100849/04 A RU96100849/04 A RU 96100849/04A RU 96100849 A RU96100849 A RU 96100849A RU 96100849 A RU96100849 A RU 96100849A
Authority
RU
Russia
Prior art keywords
acrylic acid
meth
mixture
rectification
isolating
Prior art date
Application number
RU96100849/04A
Other languages
Russian (ru)
Inventor
Хербст Хольгер
Нестлер Герхард
Хаммон Ульрих
Original Assignee
Басф Аг
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.)
Filing date
Publication date
Application filed by Басф Аг filed Critical Басф Аг
Publication of RU96100849A publication Critical patent/RU96100849A/en

Links

Claims (2)

1. Способ выделения ректификацией (мет)акриловой кислоты из содержащей ее смеси путем отбора (мет)акриловой кислоты из ректификационной колонны выше места подачи в нее содержащей (мет)акриловую кислоту жидкостной смеси, отличающийся тем, что по меньшей мере в одном месте из ректификационной колонны выводят нисходящую в ней обратную жидкость, которую после предварительной очистки от олигомерной и/или полимерной (мет)акриловой кислоты снова рециркулируют в ректификационную колонну.1. The method of separation by distillation of (meth) acrylic acid from the mixture containing it by selection of (meth) acrylic acid from the distillation column above the filing point containing (meth) acrylic acid liquid mixture, characterized in that at least in one place from the distillation the columns withdraw the reverse liquid descending in it, which, after preliminary purification from the oligomeric and / or polymeric (meth) acrylic acid, is again recycled to the distillation column. 2. Способ по п.1, отличающийся тем, что в процесс подают смесь, сожержащую (мет)акриловую кислоту и инертную гидрофобную органическую жидкость с точкой кипения выше точки кипения (мет)акриловой кислоты в качестве основных компонентов и низшие альдегиды в качестве побочных компонентов. 2. The method according to claim 1, characterized in that a mixture containing (meth) acrylic acid and an inert hydrophobic organic liquid with a boiling point above the boiling point of (meth) acrylic acid as the main components and lower aldehydes as side components is fed into the process. .
RU96100849/04A 1995-01-18 1996-01-17 METHOD FOR ISOLATING BY RECTIFICATION (MET) OF ACRYLIC ACID FROM CONTAINING ITS MIXTURE RU96100849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19501325.5 1995-01-18

Publications (1)

Publication Number Publication Date
RU96100849A true RU96100849A (en) 1998-03-27

Family

ID=

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