PL302744A1 - Method of obtaining high purity cyclohexanone of low aldehyde content from cyclohexane oxidation and/or cyclohexanol dehydrogenation products - Google Patents
Method of obtaining high purity cyclohexanone of low aldehyde content from cyclohexane oxidation and/or cyclohexanol dehydrogenation productsInfo
- Publication number
- PL302744A1 PL302744A1 PL30274494A PL30274494A PL302744A1 PL 302744 A1 PL302744 A1 PL 302744A1 PL 30274494 A PL30274494 A PL 30274494A PL 30274494 A PL30274494 A PL 30274494A PL 302744 A1 PL302744 A1 PL 302744A1
- Authority
- PL
- Poland
- Prior art keywords
- high purity
- obtaining high
- aldehyde content
- cyclohexane oxidation
- cyclohexanol dehydrogenation
- Prior art date
Links
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL94302744A PL173885B1 (en) | 1994-03-23 | 1994-03-23 | 1. The method of obtaining cyclohexanone of high purity and low aldehyde content from cyclohexane oxidation products and / or cyclohexanol dehydrogenation products in the distillation process, which separates the lower boiling impurities from cyclohexanone, separates pure cyclohexanone, releases cyclohexanol with the separation of high-boiling products, and then cyclohexanol, after dehydration, is returned to distillation, characterized in that after isolating the compounds lower than cyclohexanone boiling than cyclohexanone from cyclohexane oxidation products and / or cyclohexanol dehydrogenation products, the remaining mixture is distilled in a column operating at a pressure of 30-100 Torr, in which pure cyclohexanone is collected as a side stream, from where the number of theoretical plates is 2-25% of the total number of theoretical plates in the column, and the distillate is continuously or batchwise recirculated in an amount of 0.05-3% of the side stream to the column, k which isolates lower boiling pollutants from cyclohexanone or uses for other purposes. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL94302744A PL173885B1 (en) | 1994-03-23 | 1994-03-23 | 1. The method of obtaining cyclohexanone of high purity and low aldehyde content from cyclohexane oxidation products and / or cyclohexanol dehydrogenation products in the distillation process, which separates the lower boiling impurities from cyclohexanone, separates pure cyclohexanone, releases cyclohexanol with the separation of high-boiling products, and then cyclohexanol, after dehydration, is returned to distillation, characterized in that after isolating the compounds lower than cyclohexanone boiling than cyclohexanone from cyclohexane oxidation products and / or cyclohexanol dehydrogenation products, the remaining mixture is distilled in a column operating at a pressure of 30-100 Torr, in which pure cyclohexanone is collected as a side stream, from where the number of theoretical plates is 2-25% of the total number of theoretical plates in the column, and the distillate is continuously or batchwise recirculated in an amount of 0.05-3% of the side stream to the column, k which isolates lower boiling pollutants from cyclohexanone or uses for other purposes. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PL302744A1 true PL302744A1 (en) | 1995-10-02 |
| PL173885B1 PL173885B1 (en) | 1998-05-29 |
Family
ID=20062043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PL94302744A PL173885B1 (en) | 1994-03-23 | 1994-03-23 | 1. The method of obtaining cyclohexanone of high purity and low aldehyde content from cyclohexane oxidation products and / or cyclohexanol dehydrogenation products in the distillation process, which separates the lower boiling impurities from cyclohexanone, separates pure cyclohexanone, releases cyclohexanol with the separation of high-boiling products, and then cyclohexanol, after dehydration, is returned to distillation, characterized in that after isolating the compounds lower than cyclohexanone boiling than cyclohexanone from cyclohexane oxidation products and / or cyclohexanol dehydrogenation products, the remaining mixture is distilled in a column operating at a pressure of 30-100 Torr, in which pure cyclohexanone is collected as a side stream, from where the number of theoretical plates is 2-25% of the total number of theoretical plates in the column, and the distillate is continuously or batchwise recirculated in an amount of 0.05-3% of the side stream to the column, k which isolates lower boiling pollutants from cyclohexanone or uses for other purposes. |
Country Status (1)
| Country | Link |
|---|---|
| PL (1) | PL173885B1 (en) |
-
1994
- 1994-03-23 PL PL94302744A patent/PL173885B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL173885B1 (en) | 1998-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU643420B3 (en) | Improved wheel and method of forming same | |
| AU7481494A (en) | Method of improving oxidation and ammoxidation catalysts | |
| EP0204046A3 (en) | Process and catalyst for the conversion of cyclohexanol to cyclohexanone | |
| CA2225172A1 (en) | Synthesis of n-acyl-n-alkylcarboxylates | |
| AU3408493A (en) | Process for the preparation of dialkyl 2,3-pyridinedicarboxylate and derivatives thereof from an alpha,beta-unsaturated oxime and an aminobutenedioate | |
| SG89692G (en) | Preparation of cyclohexanone and cyclohexanol | |
| KR950700867A (en) | High Rate Process for Preparation of Cyclohexanol and Cyclohexanone | |
| CA2295656A1 (en) | Improved method for making cyclohexanol and cyclohexanone | |
| EP0558799A3 (en) | Catalyst and process for the production of 3-cyano-3,5,5-trialkylcyclohexanone | |
| PL332733A1 (en) | Method of obtaining of counter-current cyclohexane oxidation products | |
| EP0204917A3 (en) | Process for the treatment of reaction mixtures containing cyclohexanol, cyclohexanone and also cyclohexyl hydroperoxide | |
| AU8394191A (en) | Process for the preparation of substituted pyridines via 1-aza-1,3-butadienes and the 1-aza-1,3-butadiene intermediates | |
| AU7127896A (en) | Catalyst for preparing cyclohexanone by dehydrogenation of cyclohexanol and process for the preparation thereof | |
| HUP9802526A3 (en) | Process for producing 4-cyano-4-(substituted-indazole) cyclohexane carboxylic acid derivatives and their intermediates | |
| AU3176497A (en) | Catalyst for dehydrogenation of cyclohexanol, process for the preparation of said catalyst and use thereof | |
| PL263150A1 (en) | The method of separation of clean cyclohexanone from products of cyclohexane oxidation and cyclohexanol dehydrogenation | |
| PL314172A1 (en) | Method of utilising acid aqueous solutions and products obtained thereby | |
| HU9500578D0 (en) | Novel poly-iodated compounds, method of preparation and contrast product containing same | |
| PL272206A1 (en) | Method of obtaining high purity cyclohexanone from cyclohexanone oxidation products and/or cyclohexanone dehydrogenation products | |
| PL275319A1 (en) | Method of isolating from cyclohexane oxidation and cyclohexanol oxidation products those compounds which exhibit lower boiling point than that of cyclohexanone | |
| HUP9802288A3 (en) | Process for the preparation of cyclopropane carboxylic acids and intermediates thereof | |
| AU4573593A (en) | Food product and method of manufacture | |
| RU1833199C (en) | Catalyst for dehydrogenation of cyclohexanol to cyclohexanone and a method of its synthesis | |
| CS494288A1 (en) | Method of cyclohexanone production by means of cyclohexanol's catalytic dehydrogenation | |
| SG43882A1 (en) | Process for production of unsaturated aldehyde and unsaturated carboxylic acid |