GB1368460A - Manufacture of caprolactam - Google Patents
Manufacture of caprolactamInfo
- Publication number
- GB1368460A GB1368460A GB6067771A GB6067771A GB1368460A GB 1368460 A GB1368460 A GB 1368460A GB 6067771 A GB6067771 A GB 6067771A GB 6067771 A GB6067771 A GB 6067771A GB 1368460 A GB1368460 A GB 1368460A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cyclohexanone oxime
- fluidized bed
- caprolactam
- oxime
- bed
- 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
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 title abstract 6
- 238000004519 manufacturing process Methods 0.000 title 1
- VEZUQRBDRNJBJY-UHFFFAOYSA-N cyclohexanone oxime Chemical compound ON=C1CCCCC1 VEZUQRBDRNJBJY-UHFFFAOYSA-N 0.000 abstract 8
- 239000003054 catalyst Substances 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 2
- 230000002000 scavenging effect Effects 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 abstract 1
- 239000004327 boric acid Substances 0.000 abstract 1
- 229910052810 boron oxide Inorganic materials 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000012442 inert solvent Substances 0.000 abstract 1
- 150000002923 oximes Chemical class 0.000 abstract 1
- 239000003380 propellant Substances 0.000 abstract 1
- 230000008707 rearrangement Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/02—Preparation of lactams
- C07D201/04—Preparation of lactams from or via oximes by Beckmann rearrangement
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Other In-Based Heterocyclic Compounds (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
1368460 Caprolactam BADISCHE ANILIN- & SODA-FABRIK AG 30 Dec 1971 [2 Jan 1971] 60677/71 Heading C2C [Also in Division B2] Caprolactam is obtained by catalytic rearrangement of cyclohexanone oxime in a fluidizied bed containing a heated catalyst optionally supported on a carrier, the cyclohexanone oxime being introduced in liquid form, wherein molten cyclohexanone oxime or cyclohexanone oxime in solution in an inert solvent is injected into the fluidized bed through the inner tube of one or more nozzles at a pressure of from 5 to 150 atmospheres and a temperature of from 50‹ to 350‹ C. without the use of a gaseous propellant, a stream of scavenging gas being simultaneously fed to the fluidized bed through the outer annular gap of said nozzle at an angle defining the angle of divergence of the hollow core of injected liquid at from 15‹ to 110‹ C. The reaction in the catalyst bed generally takes place at a temperature of from 210‹ to 450‹ C. employing a boron oxide on aluminium catalyst and a residence time of 0À01 to 30 seconds. The scavenging gas is suitably passed through the annular gap at a pressure of 0À5 to 2À5 atmospheres at a rete of 20 to 80 m/s. An aqueous solution of boric acid and/or ammonium borate may be introduced into the fluidized bed through one or more two-component nozzles or together with the cyolohexanone oxime.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712100035 DE2100035C3 (en) | 1971-01-02 | 1971-01-02 | Process for the production of caprolactam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1368460A true GB1368460A (en) | 1974-09-25 |
Family
ID=5795093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6067771A Expired GB1368460A (en) | 1971-01-02 | 1971-12-30 | Manufacture of caprolactam |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS5327278B1 (en) |
| BE (1) | BE777644A (en) |
| BR (1) | BR7108681D0 (en) |
| DE (1) | DE2100035C3 (en) |
| ES (1) | ES398443A1 (en) |
| FR (1) | FR2120152B1 (en) |
| GB (1) | GB1368460A (en) |
| IT (1) | IT945740B (en) |
| LU (1) | LU64538A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6482945B2 (en) | 2000-09-29 | 2002-11-19 | Sumitomo Chemical Company, Limited | Process for producing epsilon-caprolactam and apparatus for the process |
-
1971
- 1971-01-02 DE DE19712100035 patent/DE2100035C3/en not_active Expired
- 1971-12-21 JP JP10332271A patent/JPS5327278B1/ja active Pending
- 1971-12-29 ES ES398443A patent/ES398443A1/en not_active Expired
- 1971-12-30 LU LU64538D patent/LU64538A1/xx unknown
- 1971-12-30 FR FR7147589A patent/FR2120152B1/fr not_active Expired
- 1971-12-30 GB GB6067771A patent/GB1368460A/en not_active Expired
- 1971-12-30 BR BR868171A patent/BR7108681D0/en unknown
- 1971-12-30 IT IT5512471A patent/IT945740B/en active
-
1972
- 1972-01-03 BE BE777644A patent/BE777644A/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6482945B2 (en) | 2000-09-29 | 2002-11-19 | Sumitomo Chemical Company, Limited | Process for producing epsilon-caprolactam and apparatus for the process |
Also Published As
| Publication number | Publication date |
|---|---|
| IT945740B (en) | 1973-05-10 |
| DE2100035C3 (en) | 1980-03-13 |
| DE2100035A1 (en) | 1972-07-27 |
| FR2120152B1 (en) | 1975-07-18 |
| FR2120152A1 (en) | 1972-08-11 |
| ES398443A1 (en) | 1974-08-16 |
| JPS5327278B1 (en) | 1978-08-07 |
| LU64538A1 (en) | 1972-06-20 |
| DE2100035B2 (en) | 1979-07-05 |
| BE777644A (en) | 1972-07-03 |
| BR7108681D0 (en) | 1973-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |