CN1226267C - 共沸蒸馏方法 - Google Patents
共沸蒸馏方法 Download PDFInfo
- Publication number
- CN1226267C CN1226267C CN 02805492 CN02805492A CN1226267C CN 1226267 C CN1226267 C CN 1226267C CN 02805492 CN02805492 CN 02805492 CN 02805492 A CN02805492 A CN 02805492A CN 1226267 C CN1226267 C CN 1226267C
- Authority
- CN
- China
- Prior art keywords
- carboxylic acid
- aliphatic carboxylic
- water
- acid esters
- oil phase
- 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.)
- Expired - Lifetime
Links
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
- C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
-
- 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
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/36—Azeotropic distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in 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)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
Description
Claims (11)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP51553/2001 | 2001-02-27 | ||
JP2001051553 | 2001-02-27 | ||
JP51553/01 | 2001-02-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1492850A CN1492850A (zh) | 2004-04-28 |
CN1226267C true CN1226267C (zh) | 2005-11-09 |
Family
ID=18912316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 02805492 Expired - Lifetime CN1226267C (zh) | 2001-02-27 | 2002-02-18 | 共沸蒸馏方法 |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN1226267C (zh) |
WO (1) | WO2002068375A1 (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1300088C (zh) * | 2005-03-25 | 2007-02-14 | 扬子石油化工股份有限公司 | 一种回收芳香族羧酸生产过程中原料、溶剂和副产物的方法 |
CN101854989A (zh) * | 2007-07-18 | 2010-10-06 | 因维斯塔技术有限公司 | 共沸剂再生的共沸蒸馏 |
CN102020549B (zh) * | 2009-09-10 | 2013-07-24 | 中国石油化工股份有限公司 | 共沸精馏分离醋酸和水的连续生产方法 |
CN103012102B (zh) * | 2011-09-27 | 2014-09-17 | 中国石油化工股份有限公司 | 芳族羧酸生产中回收乙酸和水的方法 |
CN109467501B (zh) * | 2018-08-03 | 2024-02-20 | 内蒙古蒙维科技有限公司 | 聚乙烯醇母液回收单元中醋酸精制及共沸剂再生工艺和装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW483886B (en) * | 1998-08-11 | 2002-04-21 | Du Pont | Method for recovering methyl acetate and residual acetic acid in the production of pure terephtalic acid |
-
2002
- 2002-02-18 CN CN 02805492 patent/CN1226267C/zh not_active Expired - Lifetime
- 2002-02-18 WO PCT/JP2002/001372 patent/WO2002068375A1/ja active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2002068375A1 (fr) | 2002-09-06 |
CN1492850A (zh) | 2004-04-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP01 | Change in the name or title of a patent holder | ||
CP01 | Change in the name or title of a patent holder |
Address after: Tokyo, Japan Patentee after: MITSUBISHI CHEMICAL Corp. Address before: Tokyo, Japan Patentee before: MITSUBISHI RAYON Co.,Ltd. |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20171024 Address after: Tokyo, Japan Patentee after: MITSUBISHI RAYON Co.,Ltd. Address before: Tokyo, Japan Patentee before: MITSUBISHI CHEMICAL Corp. |
|
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20051109 |