GB1271200A - Nitrile recovery process - Google Patents
Nitrile recovery processInfo
- Publication number
- GB1271200A GB1271200A GB4809370A GB4809370A GB1271200A GB 1271200 A GB1271200 A GB 1271200A GB 4809370 A GB4809370 A GB 4809370A GB 4809370 A GB4809370 A GB 4809370A GB 1271200 A GB1271200 A GB 1271200A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- gas
- passing
- distillation
- acrylonitrile
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/32—Separation; Purification; Stabilisation; Use of additives
- C07C253/34—Separation; Purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1,271,200. Recovery of acrylonitrile obtained by ammoxidation. MONSANTO CO. 9 Oct., 1970 [10 Oct., 1969 (2)], No. 48093/70. Heading C2C. Acrylonitrile produced by the ammoxidation of propylene is recovered by (a) introducing the hot off-gas from the ammoxidation reactor into a water-cooling zone, (b) passing the bottom fraction from this cooling zone to an intermediate point in a first distillation zone for the separation of water from light organics while (c) passing the off-gas from the cooling zone to an intermediate point in a gas-absorption zone, into which an absorbing solvent is introduced at a point above that at which the off gas enters, (d) passing the bottom fraction from the absorption zone to a distillation train in which the absorption solvent is separated from the crude acrylonitrile, (e) passing the crude acrylonitrile to a second distillation zone from which acrylonitrile is obtained at a point above the feed point, and (f) passing at least a part of the bottom stream from the second distillation zone to the gasabsorption zone, it being introduced at a level intermediate between the points of introduction of the cooling-zone off-gas and the absorption solvent. At least part of the bottom stream from the second distillation zone may be fed to an intermediate point in the first distillation zone and at least part of the bottom stream in - troduced into the gas absorption zone constitutes at least part of the overhead fraction from the first distillation zone.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US86531569A | 1969-10-10 | 1969-10-10 | |
| US86531469A | 1969-10-10 | 1969-10-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1271200A true GB1271200A (en) | 1972-04-19 |
Family
ID=27127890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4809370A Expired GB1271200A (en) | 1969-10-10 | 1970-10-09 | Nitrile recovery process |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1271200A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0891967A1 (en) * | 1997-07-18 | 1999-01-20 | The Standard Oil Company | Improved acrylonitrile recovery process |
| CN112973387A (en) * | 2021-04-08 | 2021-06-18 | 四川金象赛瑞化工股份有限公司 | Combined treatment method and system for waste water and waste gas |
-
1970
- 1970-10-09 GB GB4809370A patent/GB1271200A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0891967A1 (en) * | 1997-07-18 | 1999-01-20 | The Standard Oil Company | Improved acrylonitrile recovery process |
| CN112973387A (en) * | 2021-04-08 | 2021-06-18 | 四川金象赛瑞化工股份有限公司 | Combined treatment method and system for waste water and waste gas |
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