GB1390971A - Production of freeflowing caprolactam prills from a melt of caprolactam - Google Patents
Production of freeflowing caprolactam prills from a melt of caprolactamInfo
- Publication number
- GB1390971A GB1390971A GB3733772A GB3733772A GB1390971A GB 1390971 A GB1390971 A GB 1390971A GB 3733772 A GB3733772 A GB 3733772A GB 3733772 A GB3733772 A GB 3733772A GB 1390971 A GB1390971 A GB 1390971A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caprolactam
- prills
- fluidized bed
- bed
- fluidized
- 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
- C07D—HETEROCYCLIC COMPOUNDS
- C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
- C07D201/16—Separation or purification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Glanulating (AREA)
- Fertilizers (AREA)
Abstract
1390971 Caprolactam prills BADISCHE ANILIN- & SODA-FABRIK AG 10 Aug 1972 [11 Aug 1971] 37337/72 Heading C2C Free-flowing caprolactam prills are produced by introducing molten caprolactam in the form of droplets in fine dispersion into a fluidized bed of preformed caprolactam prills which are fluidized with a cold inert gas. A portion of the solid caprolactam may be brought to a smaller particle size by grinding inside or outside the fluidized bed and this portion may be introduced as new nuclei into the fluidized bed. Caprolactam particles entrained with the off gas may be deposited above the fluidized bed and returned to the latter as new nuclei; the caprolactam prills in the fluidized bed suitably have a particle size of 0À5-3 mm. The inert gas preferably enters the bed at 0-50‹ C. and leaves at 10-68‹ C. and a gas speed (of 0À5-5 m./sec. is suitably maintained in the bed. The fluidized bed may contain from 50-600 kg./m.<SP>2</SP> of caprolactam prills and 1-5 kg. of melt per hour may be supplied per kg. of prills present in the fluidized bed.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19712140193 DE2140193C3 (en) | 1971-08-11 | 1971-08-11 | Process for the production of free-flowing caprolactam prills from caprolactam melt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1390971A true GB1390971A (en) | 1975-04-16 |
Family
ID=5816432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3733772A Expired GB1390971A (en) | 1971-08-11 | 1972-08-10 | Production of freeflowing caprolactam prills from a melt of caprolactam |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS4826754A (en) |
| BE (1) | BE787400A (en) |
| BR (1) | BR7205348D0 (en) |
| DE (1) | DE2140193C3 (en) |
| FR (1) | FR2148626B3 (en) |
| GB (1) | GB1390971A (en) |
| IT (1) | IT961935B (en) |
| NL (1) | NL7210376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11253829B2 (en) | 2015-12-18 | 2022-02-22 | Lanxess Deutschland Gmbh | Process for producing solid particles |
-
0
- BE BE787400D patent/BE787400A/en unknown
-
1971
- 1971-08-11 DE DE19712140193 patent/DE2140193C3/en not_active Expired
-
1972
- 1972-07-27 NL NL7210376A patent/NL7210376A/xx unknown
- 1972-08-08 BR BR534872A patent/BR7205348D0/en unknown
- 1972-08-09 IT IT5208172A patent/IT961935B/en active
- 1972-08-10 GB GB3733772A patent/GB1390971A/en not_active Expired
- 1972-08-11 FR FR7229121A patent/FR2148626B3/fr not_active Expired
- 1972-08-11 JP JP8005472A patent/JPS4826754A/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11253829B2 (en) | 2015-12-18 | 2022-02-22 | Lanxess Deutschland Gmbh | Process for producing solid particles |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2148626B3 (en) | 1975-10-03 |
| BR7205348D0 (en) | 1974-10-29 |
| DE2140193A1 (en) | 1973-02-22 |
| IT961935B (en) | 1973-12-10 |
| NL7210376A (en) | 1973-02-13 |
| FR2148626A1 (en) | 1973-03-23 |
| DE2140193B2 (en) | 1974-05-16 |
| JPS4826754A (en) | 1973-04-09 |
| DE2140193C3 (en) | 1975-01-02 |
| BE787400A (en) | 1973-02-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |