RO98469B1 - Procedeu pentru obtinerea izoprenului - Google Patents
Procedeu pentru obtinerea izoprenuluiInfo
- Publication number
- RO98469B1 RO98469B1 RO129943A RO12994387A RO98469B1 RO 98469 B1 RO98469 B1 RO 98469B1 RO 129943 A RO129943 A RO 129943A RO 12994387 A RO12994387 A RO 12994387A RO 98469 B1 RO98469 B1 RO 98469B1
- Authority
- RO
- Romania
- Prior art keywords
- reaction zone
- isobutene
- precursors
- isoprene
- solution containing
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title 1
- 238000006243 chemical reaction Methods 0.000 abstract 7
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical compound CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 abstract 6
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 abstract 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract 3
- 239000002243 precursor Substances 0.000 abstract 3
- 239000007791 liquid phase Substances 0.000 abstract 2
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000006227 byproduct Substances 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000012044 organic layer Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 239000000376 reactant Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Inventia de fata se refera la un procedeu pentru obtinere izoprenului, în care se contacteaza, într-o prima zona de reactie, în faza lichida, o solutie apoasa continând formaldehida si/sau precursorii acesteia, împreuna cu catalizatorul în contracurent cu o solutie organica continând izobutena si/sau precursori de izobutena, iar în a doua zona de reactie , în faza mixta, gaz-lichid, în echicurent, stratul apos care se decaneaza în partea de jos a primei zone de reactie, împreuna cu un flux compus din stratul organic decantat la partea de sus a primei zone de reactie si dintr-un flux de izobutena introdus suplimentar pentru a favoriza descompunerea precursorilor de izopren, urmate de separarea izoprenului obtinut si de recircularea partiala la prima si/sau la cea de-a doua zona de reactie a produselor nereactionate si a produselor secundare, în prima zona de reactie temperatura mentinându-se sub 144,73 degree C, de preferinta între 75 si 125 degree C, iar în cea de-a doua zona, 144,73 degree C, de preferinta între 165...195 degree C, prin preîncalzirea reactantilor si prin termostatare cu un purtator de caldura care circula în spatiul dintre tevile de reactie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO129943A RO98469B1 (ro) | 1987-10-03 | 1987-10-03 | Procedeu pentru obtinerea izoprenului |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO129943A RO98469B1 (ro) | 1987-10-03 | 1987-10-03 | Procedeu pentru obtinerea izoprenului |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| RO98469B1 true RO98469B1 (ro) | 1990-02-28 |
Family
ID=40906569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO129943A RO98469B1 (ro) | 1987-10-03 | 1987-10-03 | Procedeu pentru obtinerea izoprenului |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO98469B1 (ro) |
-
1987
- 1987-10-03 RO RO129943A patent/RO98469B1/ro unknown
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB944773A (en) | Improved process for the oxidation of organic compounds | |
| GB1391580A (en) | Reactor effluent quench system | |
| RO91490B (ro) | Procedeu pentru producerea continua a alcoolilor | |
| JPH10152449A (ja) | プロセス | |
| GB1387657A (en) | Hydroformylation process | |
| GB1449091A (en) | Process for partially oxidising organic compounds | |
| RO82547B (ro) | Procedeu de obtinere a unor alcooli inferiori | |
| RO79649A (ro) | Procedeu pentru prepararea melaminei | |
| RO98469B1 (ro) | Procedeu pentru obtinerea izoprenului | |
| US3282860A (en) | Catalyst and process for preparing the same | |
| Shibata et al. | Effect of potassium promoter on iron oxide catalysts for dehydrogenation of ethylbenzene to styrene | |
| IE782583L (en) | Process for the preparation of acrylonitrile | |
| IE33593B1 (en) | Improved process for the manufacture of adiponitrile | |
| US2481583A (en) | Condensation of olefinic compounds with hydrogen sulfide | |
| ES466103A1 (es) | Un procedimiento para preparar melamina. | |
| US3578696A (en) | Method for producing malononitrile | |
| GB1419576A (en) | Manufacture of melamine | |
| US3073867A (en) | Process for the manufacture of acetophenone | |
| JPS6426524A (en) | Production of alkylstyrene | |
| US3776937A (en) | Process for the manufacture of aromatic nitriles | |
| US4017518A (en) | Method of preparing 4,4-dimethyldioxane-1,3 | |
| GB1383426A (en) | Process for the preparation of unsaturated nitriles by catalytic ammoxidation in gaseous phase of saturated aldehydes | |
| US2532515A (en) | Catalytic condensation of furans with compounds capable of yielding hydrocarbon radicals | |
| US3580917A (en) | Process for producing pyridine bases | |
| GB1284326A (en) | Process for preparation of cresol and acetone from cymene hydroperoxide |