DE3825524A1 - Verfahren zum reinigen von caprolactam - Google Patents
Verfahren zum reinigen von caprolactamInfo
- Publication number
- DE3825524A1 DE3825524A1 DE3825524A DE3825524A DE3825524A1 DE 3825524 A1 DE3825524 A1 DE 3825524A1 DE 3825524 A DE3825524 A DE 3825524A DE 3825524 A DE3825524 A DE 3825524A DE 3825524 A1 DE3825524 A1 DE 3825524A1
- Authority
- DE
- Germany
- Prior art keywords
- caprolactam
- alpha
- toluene
- treatment
- boiling
- 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.)
- Withdrawn
Links
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 26
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 48
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000011282 treatment Methods 0.000 claims abstract description 16
- 238000009835 boiling Methods 0.000 claims abstract description 13
- 239000006227 byproduct Substances 0.000 claims abstract description 13
- 238000000605 extraction Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000000047 product Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004094 surface-active agent Substances 0.000 claims abstract description 8
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 7
- 239000011261 inert gas Substances 0.000 claims abstract description 6
- 239000012298 atmosphere Substances 0.000 claims abstract description 5
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 claims abstract description 4
- 238000004821 distillation Methods 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000006237 Beckmann rearrangement reaction Methods 0.000 claims abstract description 3
- 230000009935 nitrosation Effects 0.000 claims abstract description 3
- 238000007034 nitrosation reaction Methods 0.000 claims abstract description 3
- 238000000926 separation method Methods 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 17
- 239000003513 alkali Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 4
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000000746 purification Methods 0.000 claims 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- KWYUFKZDYYNOTN-UHFFFAOYSA-M potassium hydroxide Inorganic materials [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 150000003951 lactams Chemical class 0.000 description 4
- 239000012286 potassium permanganate Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 3
- 239000002736 nonionic surfactant Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- NZNMSOFKMUBTKW-UHFFFAOYSA-N cyclohexanecarboxylic acid Chemical compound OC(=O)C1CCCCC1 NZNMSOFKMUBTKW-UHFFFAOYSA-N 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- DIORMHZUUKOISG-UHFFFAOYSA-N sulfoformic acid Chemical class OC(=O)S(O)(=O)=O DIORMHZUUKOISG-UHFFFAOYSA-N 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- SLXKOJJOQWFEFD-UHFFFAOYSA-N 6-aminohexanoic acid Chemical compound NCCCCCC(O)=O SLXKOJJOQWFEFD-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 206010010774 Constipation Diseases 0.000 description 1
- 229920001213 Polysorbate 20 Polymers 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229960002684 aminocaproic acid Drugs 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- VZFUCHSFHOYXIS-UHFFFAOYSA-N cycloheptane carboxylic acid Natural products OC(=O)C1CCCCCC1 VZFUCHSFHOYXIS-UHFFFAOYSA-N 0.000 description 1
- -1 cyclohexyl compound Chemical class 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 235000020030 perry Nutrition 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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)
- Other In-Based Heterocyclic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21548/87A IT1222419B (it) | 1987-07-31 | 1987-07-31 | Procedimento di purificazione del caprolattame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE3825524A1 true DE3825524A1 (de) | 1989-02-09 |
Family
ID=11183439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3825524A Withdrawn DE3825524A1 (de) | 1987-07-31 | 1988-07-27 | Verfahren zum reinigen von caprolactam |
Country Status (8)
| Country | Link |
|---|---|
| AR (1) | AR244664A1 (pl) |
| BR (1) | BR8803787A (pl) |
| CA (1) | CA1309404C (pl) |
| DE (1) | DE3825524A1 (pl) |
| ES (1) | ES2007278A6 (pl) |
| IN (1) | IN171456B (pl) |
| IT (1) | IT1222419B (pl) |
| SU (1) | SU1709905A3 (pl) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003018562A1 (en) * | 2001-08-27 | 2003-03-06 | Dsm Ip Assets B.V. | Process for distilling alkaline caprolactam product at reduced pressure |
| EP1105374B2 (fr) † | 1998-07-28 | 2007-09-12 | Rhodia Polyamide Intermediates | Procede de deshydratation de lactame |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4606858A (en) * | 1984-02-08 | 1986-08-19 | Snia Bpd S.P.A. | Method of purifying caprolactam |
-
1987
- 1987-07-31 IT IT21548/87A patent/IT1222419B/it active
-
1988
- 1988-07-08 IN IN480/MAS/88A patent/IN171456B/en unknown
- 1988-07-26 CA CA000573088A patent/CA1309404C/en not_active Expired - Fee Related
- 1988-07-27 DE DE3825524A patent/DE3825524A1/de not_active Withdrawn
- 1988-07-27 AR AR88311523A patent/AR244664A1/es active
- 1988-07-29 ES ES8802389A patent/ES2007278A6/es not_active Expired
- 1988-07-29 SU SU884356218A patent/SU1709905A3/ru active
- 1988-07-29 BR BR8803787A patent/BR8803787A/pt not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4606858A (en) * | 1984-02-08 | 1986-08-19 | Snia Bpd S.P.A. | Method of purifying caprolactam |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1105374B2 (fr) † | 1998-07-28 | 2007-09-12 | Rhodia Polyamide Intermediates | Procede de deshydratation de lactame |
| WO2003018562A1 (en) * | 2001-08-27 | 2003-03-06 | Dsm Ip Assets B.V. | Process for distilling alkaline caprolactam product at reduced pressure |
Also Published As
| Publication number | Publication date |
|---|---|
| SU1709905A3 (ru) | 1992-01-30 |
| BR8803787A (pt) | 1989-02-21 |
| ES2007278A6 (es) | 1989-06-01 |
| CA1309404C (en) | 1992-10-27 |
| IN171456B (pl) | 1992-10-17 |
| IT8721548A0 (it) | 1987-07-31 |
| AR244664A1 (es) | 1993-11-30 |
| IT1222419B (it) | 1990-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DD232252A5 (de) | Verfahren zur herstellung von kaliumsulfat aus schwefliger saeure und kaliumchlorid | |
| DE69127720T2 (de) | Methode zur Reinigung von organischen Lösungen, die Laktame enthalten | |
| EP0014884B1 (de) | Verfahren zur Aufarbeitung von ammoniumsulfathaltigem Abwasser | |
| DE2638170C3 (de) | Kontinuierliches Verfahren von Nicotinsäureamid durch Hydrolyse von Nicotinsäurenitril | |
| DE2508247C3 (de) | Verfahren zur Herstellung von Cyclohexanonoxim | |
| DE3825524A1 (de) | Verfahren zum reinigen von caprolactam | |
| DE1247282B (de) | Verfahren zur Herstellung von Perdisulfaten | |
| DE2443341C3 (de) | Verfahren zur Reinigung von Rohcaprolactam | |
| DE3039021A1 (de) | Verfahren zur herstellung von alkalisalzen der imidodisulfonsaeure | |
| EP0158115B1 (de) | Verfahren zur Herstellung von Iminodibenzyl | |
| DE2651195C3 (de) | Verfahren zur Gewinnung von grobkristallinem reinem Ammonsulfat | |
| DE3114989A1 (de) | Verfahren zur herstellung von nikotinamid | |
| DD246988A1 (de) | Vorrichtung und verfahren zur kontinuierlichen herstellung von natrium-n-butylat | |
| DE2558399A1 (de) | Herstellung von 3,6-dichlorpicolinsaeure | |
| DE819692C (de) | Verfahren zur Herstellung von 4-Amino-2, 6-dialkyl- bzw. -diaralkylpyrimidinen | |
| DE2822303B2 (de) | Verfahren zur Herstellung einer praktisch fluorfreien konzentrierten Phosphorsäurelösung | |
| DE2526353C3 (de) | Integriertes Verfahren zur Herstellung von Harnstoff und Ammoniak | |
| DE545712C (de) | Verfahren zur UEberfuehrung verduennter fluechtiger aliphatischer Saeuren in konzentrierte Saeuren | |
| AT256864B (de) | Verfahren zur Herstellung von Harnstoff | |
| DE1167847B (de) | Verfahren zur Herstellung von reinem Melamin aus Harnstoff | |
| DE2126881B2 (de) | Verfahren zur kontinuierlichen Herstellung von Nitrilotriacetonitril | |
| DE1916149C3 (de) | Kontinuierliches Verfahren zur Abscheidung von e-Caprolactam durch Neutralisation eines Beckmann-Umlagerungsreaktionsgemisches | |
| DE2223236A1 (de) | Verfahren und vorrichtung zur kontinuierlichen synthese von beta-alanin | |
| DE2856876A1 (de) | Verfahren zur spaltung von acetoncyanhydrin | |
| DE1545617A1 (de) | Verfahren zur Umlagerung von Cyclohexanonoxim in epsilon-Caprolactam durch Einwirkung von Polyphosphorsaeure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| 8139 | Disposal/non-payment of the annual fee |