CA2491342A1 - Purification of n,n-dimethylacetamide - Google Patents

Purification of n,n-dimethylacetamide Download PDF

Info

Publication number
CA2491342A1
CA2491342A1 CA002491342A CA2491342A CA2491342A1 CA 2491342 A1 CA2491342 A1 CA 2491342A1 CA 002491342 A CA002491342 A CA 002491342A CA 2491342 A CA2491342 A CA 2491342A CA 2491342 A1 CA2491342 A1 CA 2491342A1
Authority
CA
Canada
Prior art keywords
column
stream
acetic acid
dmac
component
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.)
Abandoned
Application number
CA002491342A
Other languages
English (en)
French (fr)
Inventor
Michael J. Gentilcore
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mallinckrodt Inc
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2491342A1 publication Critical patent/CA2491342A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C231/00—Preparation of carboxylic acid amides
    • C07C231/22—Separation; Purification; Stabilisation; Use of additives
    • C07C231/24—Separation; Purification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
    • B01D3/146—Multiple effect distillation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S203/00—Distillation: processes, separatory
    • Y10S203/09—Plural feed

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Pyrrole Compounds (AREA)
  • Detergent Compositions (AREA)
CA002491342A 2002-07-01 2003-06-18 Purification of n,n-dimethylacetamide Abandoned CA2491342A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/186,764 US6946060B2 (en) 2002-07-01 2002-07-01 Purification of N,N-dimethylacetamide
US10/186,764 2002-07-01
PCT/US2003/019405 WO2004002926A2 (en) 2002-07-01 2003-06-18 Purification of n,n-dimethylacetamide

Publications (1)

Publication Number Publication Date
CA2491342A1 true CA2491342A1 (en) 2004-01-08

Family

ID=29779931

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002491342A Abandoned CA2491342A1 (en) 2002-07-01 2003-06-18 Purification of n,n-dimethylacetamide

Country Status (12)

Country Link
US (1) US6946060B2 (enExample)
EP (1) EP1551522B1 (enExample)
JP (1) JP2005531634A (enExample)
CN (1) CN1326586C (enExample)
AT (1) ATE427150T1 (enExample)
AU (1) AU2003238296A1 (enExample)
CA (1) CA2491342A1 (enExample)
DE (1) DE60326974D1 (enExample)
ES (1) ES2322049T3 (enExample)
NO (1) NO20050520L (enExample)
PT (1) PT1551522E (enExample)
WO (1) WO2004002926A2 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110127789A (zh) * 2019-05-08 2019-08-16 河北德瑞化工有限公司 一种废水处理系统及其废水处理方法

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10315214A1 (de) * 2003-04-03 2004-10-14 Basf Ag Verfahren zur Reinigung von Dimethylacetamid (DMAC)
JP3847754B2 (ja) * 2004-02-03 2006-11-22 石油資源開発株式会社 蒸留塔を用いた水銀除去方法
DE102004030616A1 (de) * 2004-06-24 2006-01-26 Basf Ag Verfahren zur Reinigung von Dimethylacetamid (DMAc)
EP1712544A1 (de) * 2005-04-12 2006-10-18 Lonza Ag Verfahren zur Herstellung von Acetessigsäurearylamiden
CN101462977B (zh) * 2008-07-25 2012-07-25 烟台泰和新材料股份有限公司 N,n-二甲基乙酰胺的纯化方法
CN102030672B (zh) * 2010-12-09 2013-10-09 南京大学 氨纶生产过程中回收超高纯n,n-二甲基乙酰胺溶剂的工艺
RU2509593C1 (ru) * 2012-10-29 2014-03-20 федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВПО "НИУ МЭИ") Способ автоматического управления процессом ректификации и устройство для его осуществления
CN102921306B (zh) * 2012-11-16 2015-05-20 北京碧水源膜科技有限公司 分离膜凝胶浴溶液回收方法及使用回收物制备的分离膜
CN102993039A (zh) * 2012-12-18 2013-03-27 常州大学 一种回收聚醚砜纺丝废水中二甲基乙酰胺的方法
CN103145577B (zh) * 2013-02-25 2014-08-27 天津天中福大科技发展有限公司 从制药废液中回收二甲基乙酰胺的方法、设备及热耦合方法
WO2015009116A1 (ko) * 2013-07-18 2015-01-22 주식회사 엘지화학 증류 장치
US9895624B2 (en) 2013-07-18 2018-02-20 Lg Chem, Ltd. Distillation device
RU2558596C2 (ru) * 2013-11-15 2015-08-10 федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВПО "НИУ МЭИ") Способ автоматического управления эффективностью функционирования процесса ректификации
CN104016873B (zh) * 2014-05-28 2015-10-28 深圳市灿森科技有限公司 塑料膜或者聚酰亚胺膜生产中废液的回收方法
CN104926675A (zh) * 2015-05-18 2015-09-23 深圳市瑞升华科技股份有限公司 低浓度二甲基乙酰胺的回收工艺
BR112019010897B1 (pt) * 2016-12-13 2023-10-24 Avantium Knowledge Centre B.V Processo para preparar uma composição de ácido clorídrico purificada, e, composição de ácido clorídrico purificada
US10287222B1 (en) * 2017-10-20 2019-05-14 Uop Llc Process and apparatus for desorbent recovery
CN108299190B (zh) * 2018-03-07 2021-03-02 福州大学 一种分离共沸体系的方法
FR3084668A1 (fr) 2018-08-02 2020-02-07 Guerbet Procede de preparation monotope de composes organo-iodes intermediaires a la synthese du ioversol
CN109320432A (zh) * 2018-10-31 2019-02-12 浙江本优机械有限公司 一种用于低浓度二甲基乙酰胺回收提纯的蒸发设备
CN109745723B (zh) * 2018-12-29 2021-07-06 恒天纤维集团有限公司 一种双塔连续供料精馏系统及控制方法
JP7255042B2 (ja) * 2019-05-20 2023-04-11 株式会社レゾナック Ｎ，ｎ－ジメチルカルボン酸アミドの製造方法
DK180599B1 (en) 2020-01-20 2021-10-14 Blue World Technologies Holding ApS Apparatus and process for making acid-doped proton exchange membranes
CN116903083B (zh) * 2023-09-07 2023-11-21 河北乐凯化工工程设计有限公司 一种含dmac工业废水的回收处理工艺
CN118925248B (zh) * 2024-07-22 2025-09-12 太仓沪试试剂有限公司 一种蒸馏装置及基于该蒸馏装置的n,n-二甲基甲酰胺纯化工艺

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3419478A (en) * 1966-12-13 1968-12-31 Du Pont Azeotropic distillation of a n,n-dimethylacetamide-acetic acid mixture using a saturated aliphatic hydrocarbon
NL6717010A (enExample) 1966-12-15 1968-06-17
US3687820A (en) * 1970-11-23 1972-08-29 Du Pont Process for separating mixtures of n,n-dimethylacetamides and acetic acid by distilling with alternate pressures
DE2408011A1 (de) * 1974-02-20 1975-09-04 Hoechst Ag Verfahren zur gewinnung von technisch reiner essigsaeure durch extraktivdestillation
US3959371A (en) 1974-10-08 1976-05-25 Custom Organics, Inc. Process for the purification of N,N-dimethylacetamide
DE2631734B2 (de) * 1976-07-15 1978-11-30 Bayer Ag, 5090 Leverkusen Verfahren zur Ruckgewinnung von Dimethylac) !amiden
NL8103517A (nl) * 1981-07-24 1983-02-16 Badger Bv Werkwijze voor het scheiden van carbonzuren van mengsels met niet-zuren door een absorptie-stripbehandeling.
US5124004A (en) 1983-08-22 1992-06-23 Trustees Of Dartmouth College Distillation process for ethanol
DE4109632A1 (de) 1991-03-23 1992-09-24 Krupp Koppers Gmbh Verfahren zur abtrennung von aromaten durch extraktivdestillation
FR2751558B1 (fr) 1996-07-26 1998-09-18 Inst Francais Du Petrole Dispositif de reaction et de distillation et procede d'etherification

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110127789A (zh) * 2019-05-08 2019-08-16 河北德瑞化工有限公司 一种废水处理系统及其废水处理方法

Also Published As

Publication number Publication date
CN1665574A (zh) 2005-09-07
WO2004002926A2 (en) 2004-01-08
US6946060B2 (en) 2005-09-20
CN1326586C (zh) 2007-07-18
JP2005531634A (ja) 2005-10-20
NO20050520L (no) 2005-01-31
WO2004002926A3 (en) 2004-06-03
ES2322049T3 (es) 2009-06-16
AU2003238296A8 (en) 2004-01-19
ATE427150T1 (de) 2009-04-15
PT1551522E (pt) 2009-07-01
US20040000470A1 (en) 2004-01-01
DE60326974D1 (de) 2009-05-14
EP1551522A4 (en) 2005-10-19
AU2003238296A1 (en) 2004-01-19
EP1551522B1 (en) 2009-04-01
EP1551522A2 (en) 2005-07-13

Similar Documents

Publication Publication Date Title
US6946060B2 (en) Purification of N,N-dimethylacetamide
US5399244A (en) Process to recover benzene from mixed hydrocarbons by extractive distillation
US4428798A (en) Extraction and/or extractive distillation of low molecular weight alcohols from aqueous solutions
EP2872473B1 (en) Process for the production of methylbutynol
ZA200300416B (en) Process for the purification and recovery of acetonitrile.
US20060219545A1 (en) Method for the purification of dimethylacetamide (dmac)
US20120073954A1 (en) Recovery of acetonitrile from a waste stream
EP1603651B1 (en) Distillative method for separating hexamethylenediamine from a mixture comprising hexamethylenediamine, -aminocapronitrile and tetrahydroazepine
US6508917B1 (en) Method and apparatus for purifying low grade acetonitrile and other constituents from hazardous waste
US4412887A (en) Evaporation process with liquid entrainment separation
KR20000028897A (ko) 공정흐름을 정제하기 위한 방법
KR20050016671A (ko) 엔,엔-디메틸아세트아미드의 정제
EP0037856A1 (en) Enhanced distillation of cyclohexanol from phenol with additional cyclohexanone feed
KR20190086944A (ko) 분리벽형 증류탑을 이용한 석유수지 제조 공정의 중합용매 정제방법
EP3604278B1 (en) Process for the purification of acrolein
EP3806971B1 (en) Process for the separation of ethylbenzene from other c8 aromatic compounds
JPH075544B2 (ja) Ｎ−メチルピロリドンの精製方法
HK1205097B (en) Process for the production of methylbutinol

Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued
FZDE Discontinued

Effective date: 20110317