JPS55104245A - Purification of crude hydrogen cyanide-containing olefinic unsaturated nitrile - Google Patents

Purification of crude hydrogen cyanide-containing olefinic unsaturated nitrile

Info

Publication number
JPS55104245A
JPS55104245A JP1111079A JP1111079A JPS55104245A JP S55104245 A JPS55104245 A JP S55104245A JP 1111079 A JP1111079 A JP 1111079A JP 1111079 A JP1111079 A JP 1111079A JP S55104245 A JPS55104245 A JP S55104245A
Authority
JP
Japan
Prior art keywords
hydrogen cyanide
line
unsaturated nitrile
olefinic unsaturated
condenser
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.)
Granted
Application number
JP1111079A
Other languages
Japanese (ja)
Other versions
JPS618821B2 (en
Inventor
Kazumasa Katsuta
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co Ltd
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 Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP1111079A priority Critical patent/JPS55104245A/en
Priority to US06/115,594 priority patent/US4276125A/en
Priority to IT19561/80A priority patent/IT1130912B/en
Priority to DE3003332A priority patent/DE3003332C2/en
Priority to GB8003063A priority patent/GB2041372B/en
Publication of JPS55104245A publication Critical patent/JPS55104245A/en
Publication of JPS618821B2 publication Critical patent/JPS618821B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To remove the hydrogen cyanide from not only the top but also the intermediate point of the column, and to reduce the load on the overhead condenser, by means of the condenser with a gas vent near the top of the purification column of a crude olefinic unsaturated nitrile.
CONSTITUTION: A crude olefinic unsaturated nitrile containing hydrogen cyanide is fed from the line 11 to the purification column 10, and taken out of the line 13 and cooled by the condenser 14. Hydrogen cyanide gas is removed from the line 15, and the purified olefinic unsaturated nitrile is taken out of the line 16. The vapor in the column at 35W75°C is taken from the line 1 between the top and the line 11 as a side cut at a given flow rate, and condensed in the condenser 2 to take the uncondensed hydrogen cyanide gas from the vent 7. The condensate is returned to the column. Thus, the excessive cooling in the condenser 14 is reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP1111079A 1979-02-02 1979-02-02 Purification of crude hydrogen cyanide-containing olefinic unsaturated nitrile Granted JPS55104245A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1111079A JPS55104245A (en) 1979-02-02 1979-02-02 Purification of crude hydrogen cyanide-containing olefinic unsaturated nitrile
US06/115,594 US4276125A (en) 1979-02-02 1980-01-25 Process for purification of crude olefinically unsaturated nitrile and condenser useful for same process
IT19561/80A IT1130912B (en) 1979-02-02 1980-01-30 PURIFICATION PROCESS OF CRUDE OLEFINICALLY UNSATURATED NITRILS AND EQUIPMENT FOR CARRYING OUT THAT PROCEDURE
DE3003332A DE3003332C2 (en) 1979-02-02 1980-01-30 Process for purifying crude acrylonitrile
GB8003063A GB2041372B (en) 1979-02-02 1980-01-30 Process for purification of crude olefinically unsaturated nitrile and condenser useful for same process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1111079A JPS55104245A (en) 1979-02-02 1979-02-02 Purification of crude hydrogen cyanide-containing olefinic unsaturated nitrile

Publications (2)

Publication Number Publication Date
JPS55104245A true JPS55104245A (en) 1980-08-09
JPS618821B2 JPS618821B2 (en) 1986-03-18

Family

ID=11768862

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1111079A Granted JPS55104245A (en) 1979-02-02 1979-02-02 Purification of crude hydrogen cyanide-containing olefinic unsaturated nitrile

Country Status (1)

Country Link
JP (1) JPS55104245A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005501119A (en) * 2001-08-21 2005-01-13 ザ・スタンダード・オイル・カンパニー Improved head column operation in acrylonitrile production.
JP2007039403A (en) * 2005-08-05 2007-02-15 Asahi Kasei Chemicals Corp Method for separating and recovering acrylonitrile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005501119A (en) * 2001-08-21 2005-01-13 ザ・スタンダード・オイル・カンパニー Improved head column operation in acrylonitrile production.
JP2007039403A (en) * 2005-08-05 2007-02-15 Asahi Kasei Chemicals Corp Method for separating and recovering acrylonitrile

Also Published As

Publication number Publication date
JPS618821B2 (en) 1986-03-18

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