PL66663B1 - - Google Patents
Download PDFInfo
- Publication number
- PL66663B1 PL66663B1 PL137297A PL13729769A PL66663B1 PL 66663 B1 PL66663 B1 PL 66663B1 PL 137297 A PL137297 A PL 137297A PL 13729769 A PL13729769 A PL 13729769A PL 66663 B1 PL66663 B1 PL 66663B1
- Authority
- PL
- Poland
- Prior art keywords
- caprolactam
- solvent
- extraction
- chloroform
- distilled
- Prior art date
Links
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 claims description 68
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 30
- 238000000605 extraction Methods 0.000 claims description 22
- 239000002904 solvent Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 19
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000004821 distillation Methods 0.000 claims description 9
- 150000003951 lactams Chemical class 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 8
- 235000019441 ethanol Nutrition 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Natural products OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 5
- 238000009835 boiling Methods 0.000 claims description 4
- QPJCYJIZFCJYIR-UHFFFAOYSA-N 4-propylazetidin-2-one Chemical compound CCCC1CC(=O)N1 QPJCYJIZFCJYIR-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 239000013557 residual solvent Substances 0.000 claims 1
- 239000002699 waste material Substances 0.000 description 7
- 239000010865 sewage Substances 0.000 description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 239000002026 chloroform extract Substances 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- VEZUQRBDRNJBJY-UHFFFAOYSA-N cyclohexanone oxime Chemical compound ON=C1CCCCC1 VEZUQRBDRNJBJY-UHFFFAOYSA-N 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000006237 Beckmann rearrangement reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000001166 ammonium sulphate Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000010517 secondary reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL66663B1 true PL66663B1 (id) | 1972-08-31 |
Family
ID=
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105408313B (zh) | 一种工业规模回收己内酰胺和结晶硫酸铵的连续方法 | |
| JP2782919B2 (ja) | ラクタム含有有機溶液の精製方法 | |
| US4018869A (en) | Process for the extractive purification of phosphoric acid containing cationic impurities | |
| US3953581A (en) | Purification of wet-processed phosphoric acid using anhydrous solvents | |
| CN113979925B (zh) | 在农药生产废液中提取3-甲基吡啶的方法 | |
| PL88948B1 (id) | ||
| US2658909A (en) | Process for separation and purification of alkyl phosphoric acids | |
| JP2003534321A (ja) | ラクタムの精製法 | |
| FI59077C (fi) | Foerfarande foer rening av vaotprocessfosforsyra | |
| US4041138A (en) | Process for the preparation of crystalline potassium tantalum fluoride | |
| PL66663B1 (id) | ||
| SE429752B (sv) | Sett for rening av vatframstelld fosforsyra | |
| US3497329A (en) | Production of phosphoric acid | |
| JPS5976026A (ja) | 塩化メチレンとｎ−ヘキサンの分離精製法 | |
| JPS6026103B2 (ja) | ε−カプロラクタム及び硫安の回収方法 | |
| US2237628A (en) | Separation of tri-ethyl amine from reaction mixtures | |
| US2797216A (en) | Production of caprolagtam | |
| SU946400A3 (ru) | Способ выделени @ -капролактама | |
| CZ411897A3 (cs) | Způsob čištění látek jejich extrakcí z kapalného prostředí a použití tohoto způsobu | |
| US4207303A (en) | Method for producing pure phosphoric acid | |
| US2861988A (en) | Caprolactam manufacture | |
| EP0009849B1 (en) | A process for the purification of phosphoric acid | |
| SU584004A1 (ru) | Способ выделени капролактама | |
| JPH0393740A (ja) | アルコールを含有する反応混合物からエノールエーテルを分離する方法 | |
| JP2649736B2 (ja) | ラクタム含有有機溶液の精製法 |