DE1668567A1 - Verfahren zur Trennung von Essigsaeure und N,N-Dimethylacetamid - Google Patents
Verfahren zur Trennung von Essigsaeure und N,N-DimethylacetamidInfo
- Publication number
- DE1668567A1 DE1668567A1 DE19671668567 DE1668567A DE1668567A1 DE 1668567 A1 DE1668567 A1 DE 1668567A1 DE 19671668567 DE19671668567 DE 19671668567 DE 1668567 A DE1668567 A DE 1668567A DE 1668567 A1 DE1668567 A1 DE 1668567A1
- Authority
- DE
- Germany
- Prior art keywords
- mixture
- acetic acid
- pressure
- composition
- distillate
- 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.)
- Pending
Links
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 title claims description 96
- 238000000034 method Methods 0.000 title claims description 11
- 238000000926 separation method Methods 0.000 title description 5
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 title 1
- 239000000203 mixture Substances 0.000 claims description 44
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 claims description 10
- 238000004508 fractional distillation Methods 0.000 claims 2
- 238000013459 approach Methods 0.000 claims 1
- 238000004821 distillation Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000009835 boiling Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005292 vacuum distillation Methods 0.000 description 2
- LJIRBXZDQGQUOO-KVTDHHQDSA-N 6-amino-3-[(2r,3r,4s,5r)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-1,4-dihydro-1,3,5-triazin-2-one Chemical group C1NC(N)=NC(=O)N1[C@H]1[C@H](O)[C@H](O)[C@@H](CO)O1 LJIRBXZDQGQUOO-KVTDHHQDSA-N 0.000 description 1
- 244000209117 Castanea crenata Species 0.000 description 1
- 235000003801 Castanea crenata Nutrition 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001577 simple distillation Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60185166A | 1966-12-15 | 1966-12-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1668567A1 true DE1668567A1 (de) | 1971-09-02 |
Family
ID=24409019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19671668567 Pending DE1668567A1 (de) | 1966-12-15 | 1967-12-15 | Verfahren zur Trennung von Essigsaeure und N,N-Dimethylacetamid |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE707979A (enrdf_load_stackoverflow) |
| DE (1) | DE1668567A1 (enrdf_load_stackoverflow) |
| FR (1) | FR1549711A (enrdf_load_stackoverflow) |
| GB (1) | GB1165278A (enrdf_load_stackoverflow) |
| NL (1) | NL6717010A (enrdf_load_stackoverflow) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6946060B2 (en) * | 2002-07-01 | 2005-09-20 | Mallinckrodt Inc. | Purification of N,N-dimethylacetamide |
| CN100342986C (zh) * | 2004-12-22 | 2007-10-17 | 哈尔滨工业大学 | 从头孢哌酮钠生产废液中回收二甲基乙酰胺的方法 |
| CN112574059B (zh) * | 2019-09-29 | 2022-10-11 | 中国石油化工股份有限公司 | N,n-二甲基乙酰胺-乙酸混合体系的分离 |
| CN111454169B (zh) * | 2020-03-31 | 2023-03-28 | 苏州予信天材新材料应用技术有限公司 | 一种含n,n-二甲基乙酰胺的废有机溶剂的回收方法 |
| CN114057596B (zh) * | 2020-07-31 | 2024-07-09 | 中国石油化工股份有限公司 | 一种脱除二甲基乙酰胺中有机酸的方法 |
| CN114436883B (zh) * | 2020-10-19 | 2024-06-28 | 中国石油化工股份有限公司 | 一种从多元溶液体系中回收n,n-二甲基乙酰胺的方法 |
-
1967
- 1967-12-14 NL NL6717010A patent/NL6717010A/xx unknown
- 1967-12-14 GB GB5684167A patent/GB1165278A/en not_active Expired
- 1967-12-14 BE BE707979D patent/BE707979A/xx unknown
- 1967-12-14 FR FR1549711D patent/FR1549711A/fr not_active Expired
- 1967-12-15 DE DE19671668567 patent/DE1668567A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL6717010A (enrdf_load_stackoverflow) | 1968-06-17 |
| BE707979A (enrdf_load_stackoverflow) | 1968-06-14 |
| FR1549711A (enrdf_load_stackoverflow) | 1968-12-13 |
| GB1165278A (en) | 1969-09-24 |
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