WO2009013623A3 - Azeotropic distillation with entrainer regeneration - Google Patents

Azeotropic distillation with entrainer regeneration Download PDF

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Publication number
WO2009013623A3
WO2009013623A3 PCT/IB2008/002698 IB2008002698W WO2009013623A3 WO 2009013623 A3 WO2009013623 A3 WO 2009013623A3 IB 2008002698 W IB2008002698 W IB 2008002698W WO 2009013623 A3 WO2009013623 A3 WO 2009013623A3
Authority
WO
WIPO (PCT)
Prior art keywords
organic entrainer
azeotropic distillation
entrainer
feedstock
product
Prior art date
Application number
PCT/IB2008/002698
Other languages
French (fr)
Other versions
WO2009013623A2 (en
Inventor
Graham Robert Aird
Andrew Broadbent
Dena Ghiasy
Antony Peter John Limbach
Original Assignee
Invista Tech Sarl
Graham Robert Aird
Andrew Broadbent
Dena Ghiasy
Antony Peter John Limbach
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 Invista Tech Sarl, Graham Robert Aird, Andrew Broadbent, Dena Ghiasy, Antony Peter John Limbach filed Critical Invista Tech Sarl
Priority to CN200880108239A priority Critical patent/CN101854989A/en
Publication of WO2009013623A2 publication Critical patent/WO2009013623A2/en
Publication of WO2009013623A3 publication Critical patent/WO2009013623A3/en

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Classifications

    • 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
    • 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

Abstract

The present invention relates to a process for azeotropic distillation (Dl) of a feedstock (1), wherein the feedstock (1) comprises an aliphatic carboxylic acid and water, comprising conducting the azeotropic distillation (Dl) in the presence of an organic entrainer to produce a liquid phase component (2) comprising said aliphatic carboxylic acid having a reduced water content relative to the water content in the feedstock (1) and a vapor phase component (3) comprising the organic entrainer, an organic entrainer by-product and water, and either (i) returning a stream comprising the organic entrainer by-product to a point in the azeotropic distillation below where the feedstock is fed (9), wherein the organic entrainer by-product is converted to the organic entrainer or (ii) converting the organic entrainer by-product to the organic entrainer and then returning the organic entrainer to the azeotropic distillation.
PCT/IB2008/002698 2007-07-18 2008-06-27 Azeotropic distillation with entrainer regeneration WO2009013623A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200880108239A CN101854989A (en) 2007-07-18 2008-06-27 Azeotropic distillation with entrainer regeneration

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US95042607P 2007-07-18 2007-07-18
US60/950,426 2007-07-18

Publications (2)

Publication Number Publication Date
WO2009013623A2 WO2009013623A2 (en) 2009-01-29
WO2009013623A3 true WO2009013623A3 (en) 2009-08-06

Family

ID=40281906

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2008/002698 WO2009013623A2 (en) 2007-07-18 2008-06-27 Azeotropic distillation with entrainer regeneration

Country Status (5)

Country Link
CN (1) CN101854989A (en)
AR (1) AR067614A1 (en)
SA (1) SA08290441B1 (en)
TW (1) TW200909408A (en)
WO (1) WO2009013623A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8382961B2 (en) * 2010-06-07 2013-02-26 Amt International, Inc. System and method for reduction of water consumption in purified terephthalic acid production
GB201015986D0 (en) 2010-09-23 2010-11-03 Davy Process Techn Ltd Process and apparatus
EP2461613A1 (en) * 2010-12-06 2012-06-06 Gemalto SA Methods and system for handling UICC data
US9180384B2 (en) 2010-12-10 2015-11-10 Dow Global Technologies Llc Apparatus and process for using olefin as an azeotropic entrainer for isolating 1,3-DICHLORO-2-propanol from a 2,2′-oxybis (1-chloropropane) waste stream
WO2012078725A1 (en) * 2010-12-10 2012-06-14 Dow Global Technologies Llc Apparatus and process for using a nitroalkane as an entrainer for azeotropic removal of water from aqueous acid solution
JP5941532B2 (en) * 2011-04-18 2016-06-29 アンガス ケミカル カンパニー Apparatus and method for nitration selection flexibility enabled by azeotropic distillation
CN105381624A (en) * 2015-11-24 2016-03-09 肥城金威机械有限公司 Azeotropy rectification method-based acetic acid recovery device and method
CN109467501B (en) * 2018-08-03 2024-02-20 内蒙古蒙维科技有限公司 Process and device for refining acetic acid and regenerating entrainer in polyvinyl alcohol mother liquor recovery unit

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383688A1 (en) * 1977-03-19 1978-10-13 Mitsui Petrochemical Ind AZEOTROPIC DISTILLATION PROCESS
US4661208A (en) * 1984-11-02 1987-04-28 Shin-Etsu Vinyl Acetate Co., Ltd. Method for dehydrating distillation of an aqueous solution of carboxylic acid
WO1996006065A1 (en) * 1994-08-23 1996-02-29 Imperial Chemical Industries Plc Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid
WO1998045239A1 (en) * 1997-04-09 1998-10-15 E.I. Du Pont De Nemours And Company Water separation process
US20030150706A1 (en) * 2002-02-12 2003-08-14 Ji-Young Jang System and method for acetic acid recovery during terephthalic acid production
WO2005019149A1 (en) * 2003-08-12 2005-03-03 Amt International, Inc. System and method for acetic acid recovery during terephthalic acid production

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1226267C (en) * 2001-02-27 2005-11-09 三菱化学株式会社 Azeotropic distillation process

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383688A1 (en) * 1977-03-19 1978-10-13 Mitsui Petrochemical Ind AZEOTROPIC DISTILLATION PROCESS
US4661208A (en) * 1984-11-02 1987-04-28 Shin-Etsu Vinyl Acetate Co., Ltd. Method for dehydrating distillation of an aqueous solution of carboxylic acid
WO1996006065A1 (en) * 1994-08-23 1996-02-29 Imperial Chemical Industries Plc Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid
WO1998045239A1 (en) * 1997-04-09 1998-10-15 E.I. Du Pont De Nemours And Company Water separation process
US20030150706A1 (en) * 2002-02-12 2003-08-14 Ji-Young Jang System and method for acetic acid recovery during terephthalic acid production
WO2005019149A1 (en) * 2003-08-12 2005-03-03 Amt International, Inc. System and method for acetic acid recovery during terephthalic acid production

Also Published As

Publication number Publication date
CN101854989A (en) 2010-10-06
WO2009013623A2 (en) 2009-01-29
AR067614A1 (en) 2009-10-14
TW200909408A (en) 2009-03-01
SA08290441B1 (en) 2012-02-07

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