GB1492266A - Process for the recovery of styrene and substituted derivatives thereof - Google Patents
Process for the recovery of styrene and substituted derivatives thereofInfo
- Publication number
- GB1492266A GB1492266A GB2288975A GB2288975A GB1492266A GB 1492266 A GB1492266 A GB 1492266A GB 2288975 A GB2288975 A GB 2288975A GB 2288975 A GB2288975 A GB 2288975A GB 1492266 A GB1492266 A GB 1492266A
- Authority
- GB
- United Kingdom
- Prior art keywords
- caprolactam
- extractive distillation
- styrene
- fraction
- recovery
- 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
- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
- C07C7/05—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds
- C07C7/08—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds by extractive distillation
Abstract
1492266 Extractive distillation LEUNAWERKE "WALTER ULBRICHT" VEB 23 May 1975 [13 June 1974] 22889/75 Heading C5E Styrene, or substituted styrene, is recovered from mixtures by extractive distillation at reduced pressure and in the presence of a polymerization inhibitor, such as hydroquinone, using a solvent comprising an N-alkyl-#- caprolactam. The caprolactam can be N- methyl-#-caprolactam or N-ethyl-#-caprolactam and can be used in admixture with ethylene glycol or diethylene glycol. The styrenecontaining mixture can be produced by the cracking of benzines or diesel oils or by the dehydrogenation of ethyl benzenes and can be separated into a C 8 fraction, a C 7 and lower fraction and a C 9 and higher fraction by fractional distillation prior to the extractive distillation. The extractive distillation can be carried out at 45-50‹ C. and 30 mmHg.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD17912574A DD115897A1 (en) | 1974-06-13 | 1974-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1492266A true GB1492266A (en) | 1977-11-16 |
Family
ID=5496138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2288975A Expired GB1492266A (en) | 1974-06-13 | 1975-05-23 | Process for the recovery of styrene and substituted derivatives thereof |
Country Status (6)
| Country | Link |
|---|---|
| CS (1) | CS186932B1 (en) |
| DD (1) | DD115897A1 (en) |
| DE (1) | DE2521154A1 (en) |
| FR (1) | FR2274585A1 (en) |
| GB (1) | GB1492266A (en) |
| SU (1) | SU564300A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311304A (en) * | 2010-06-29 | 2012-01-11 | 中国石油化工股份有限公司 | Complex solvent for separating out styrene through extractive distillation and application thereof |
| CN110028376A (en) * | 2018-01-12 | 2019-07-19 | 中国石油化工股份有限公司 | The purification of extracting, rectifying and separating phenylethylene solvent for use and styrene separation process |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8362313B2 (en) * | 2009-07-17 | 2013-01-29 | Gtc Technology, Lp | Processes and systems for recovery of styrene from a styrene-containing feedstock |
| RU2722271C1 (en) * | 2019-10-02 | 2020-05-28 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный нефтяной технический университет" | Method of extracting styrene from pyro-condensate fraction c8 |
-
1974
- 1974-06-13 DD DD17912574A patent/DD115897A1/xx unknown
-
1975
- 1975-05-13 DE DE19752521154 patent/DE2521154A1/en not_active Withdrawn
- 1975-05-23 GB GB2288975A patent/GB1492266A/en not_active Expired
- 1975-06-12 SU SU7502142901A patent/SU564300A1/en active
- 1975-06-12 CS CS416975A patent/CS186932B1/en unknown
- 1975-06-13 FR FR7518625A patent/FR2274585A1/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102311304A (en) * | 2010-06-29 | 2012-01-11 | 中国石油化工股份有限公司 | Complex solvent for separating out styrene through extractive distillation and application thereof |
| CN102311304B (en) * | 2010-06-29 | 2014-10-01 | 中国石油化工股份有限公司 | Complex solvent for separating out styrene through extractive distillation and application thereof |
| CN110028376A (en) * | 2018-01-12 | 2019-07-19 | 中国石油化工股份有限公司 | The purification of extracting, rectifying and separating phenylethylene solvent for use and styrene separation process |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2274585A1 (en) | 1976-01-09 |
| FR2274585B1 (en) | 1980-08-08 |
| DE2521154A1 (en) | 1976-02-26 |
| DD115897A1 (en) | 1975-10-20 |
| CS186932B1 (en) | 1978-12-29 |
| SU564300A1 (en) | 1977-07-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |