BG60268B2 - Continuous acetonitrile recovery process - Google Patents
Continuous acetonitrile recovery processInfo
- Publication number
- BG60268B2 BG60268B2 BG55361A BG5536182A BG60268B2 BG 60268 B2 BG60268 B2 BG 60268B2 BG 55361 A BG55361 A BG 55361A BG 5536182 A BG5536182 A BG 5536182A BG 60268 B2 BG60268 B2 BG 60268B2
- Authority
- BG
- Bulgaria
- Prior art keywords
- acetonitrile
- azeotrope
- water
- distilling
- atm
- Prior art date
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The process is used for the continuous recovering of acetonitrile from unpurified mixtures. It is used for the preparation of a product having high purity - up to 99.9%. The recovering of the acetonitrile comprises: distilling the crude acetonitrile in a first distillation zone at a pressure of about 1 atm. for the removal of HCN and the production of a first acetonitrile /water azeotrope and a first bottoms product containing water; distilling the first azeotrope in second distillation zone at a pressure less than 1 atm., in other to separate the first azeotrope into a second bottoms product containing water and a second acetonitrile/water having azeotrope a greater acetonitrile cincentration than the first azeotrope; distilling the second acetonitrile/water azeotrope in a third distillation zone at a pressure above 1 atm., for the production of a third acetonitrile/water, azeotrope containing substantially all of the water in the second azeotrope, a third bottoms settling product containing acetonenitrile and heavy organic, and a side stream flow containing the highly pure acetonitrile.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG055361A BG60268B1 (en) | 1982-02-12 | 1982-02-12 | CONTINUOUS METHOD FOR ACETONITRILE EXTRACTION |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG055361A BG60268B1 (en) | 1982-02-12 | 1982-02-12 | CONTINUOUS METHOD FOR ACETONITRILE EXTRACTION |
Publications (2)
Publication Number | Publication Date |
---|---|
BG60268B2 true BG60268B2 (en) | 1994-03-31 |
BG60268B1 BG60268B1 (en) | 1994-03-31 |
Family
ID=3910292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BG055361A BG60268B1 (en) | 1982-02-12 | 1982-02-12 | CONTINUOUS METHOD FOR ACETONITRILE EXTRACTION |
Country Status (1)
Country | Link |
---|---|
BG (1) | BG60268B1 (en) |
-
1982
- 1982-02-12 BG BG055361A patent/BG60268B1/en unknown
Also Published As
Publication number | Publication date |
---|---|
BG60268B1 (en) | 1994-03-31 |
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