BG101136A - Method for the separation of raw ester in dmt process - Google Patents

Method for the separation of raw ester in dmt process

Info

Publication number
BG101136A
BG101136A BG101136A BG10113697A BG101136A BG 101136 A BG101136 A BG 101136A BG 101136 A BG101136 A BG 101136A BG 10113697 A BG10113697 A BG 10113697A BG 101136 A BG101136 A BG 101136A
Authority
BG
Bulgaria
Prior art keywords
separation
column
raw
ester
dmt
Prior art date
Application number
BG101136A
Other languages
Bulgarian (bg)
Inventor
Hans Dahl
Udo Lenz
Original Assignee
Huels Aktiengesellschaft
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 Huels Aktiengesellschaft filed Critical Huels Aktiengesellschaft
Publication of BG101136A publication Critical patent/BG101136A/en

Links

Classifications

    • 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
    • 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
    • B01D3/141—Fractional distillation or use of a fractionation or rectification column where at least one distillation column contains at least one dividing wall
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
    • C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
    • C07C69/80—Phthalic acid esters
    • C07C69/82—Terephthalic acid esters
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

The invention relates to a method for the separation of rawester basically produced by catalytic oxidation of paraxylene (pX)and methyl ester of the paratoluene acid (pTE). The reactionproducts from the oxidation are esterified by methanol whenproducing dimethylterephthalate (DMT) in a fraction rich in pTE,one fraction of raw DMT and one highly boiling residual fraction.The separation of the raw ester is made in a separation devicemade of a separation wall column or a distillation column with aprecolumn, or distillation column with a column additionallyconnected after it. The invention also relates to a method for theDMT production by which the separation of the raw ester is made ina separation device made of a separation wall column or onedistillation column with a column additionally connected after it.7 claims
BG101136A 1996-05-07 1997-01-16 Method for the separation of raw ester in dmt process BG101136A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19618152A DE19618152C1 (en) 1996-05-07 1996-05-07 Energy-saving separation of crude di:methyl terephthalate fraction under mild conditions

Publications (1)

Publication Number Publication Date
BG101136A true BG101136A (en) 1998-04-30

Family

ID=7793486

Family Applications (1)

Application Number Title Priority Date Filing Date
BG101136A BG101136A (en) 1996-05-07 1997-01-16 Method for the separation of raw ester in dmt process

Country Status (8)

Country Link
EP (1) EP0806406A1 (en)
JP (1) JPH09301930A (en)
KR (1) KR970074745A (en)
BG (1) BG101136A (en)
CZ (1) CZ11097A3 (en)
DE (1) DE19618152C1 (en)
TR (1) TR199700142A2 (en)
TW (1) TW397818B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10100552A1 (en) * 2001-01-09 2002-07-11 Basf Ag Process and device for working up 1,6-hexanediol, 1,5-pentanediol and caprolactone by distillation
US7498472B2 (en) 2007-05-23 2009-03-03 Uop Llc Process for producing ethylbenzene
US7498471B2 (en) 2007-05-23 2009-03-03 Uop Llc Process for producing cumene
US7525004B2 (en) 2007-05-23 2009-04-28 Uop Llc Process for producing ethylbenzene
US7525003B2 (en) 2007-05-23 2009-04-28 Uop Llc Process for producing ethylbenzene
US7525005B2 (en) 2007-05-23 2009-04-28 Uop Llc Process for producing cumene
US7525006B2 (en) 2007-05-23 2009-04-28 Uop Llc Process for producing cumene
US7713386B2 (en) 2007-05-23 2010-05-11 Uop Llc Apparatus for producing ethylbenzene or cumene
CA2885432C (en) * 2012-09-28 2017-04-25 Dow Global Technologies Llc Process for the production of high purity glycol esters
WO2023140986A1 (en) 2022-01-19 2023-07-27 Exxonmobil Chemical Patents Inc. Compositions containing tri-cyclopentadiene and processes for making same

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992168A (en) * 1959-07-09 1961-07-11 Eastman Kodak Co Process of purifying dimethyl terephthalate and other compounds which sublime
DE3011858C2 (en) * 1979-04-21 1982-11-25 Dynamit Nobel Ag, 5210 Troisdorf Process for the production of terephthalic acid from crude dimethyl terephthalate by continuous hydrolysis with water
DE3045332C2 (en) * 1980-12-02 1982-11-25 Dynamit Nobel Ag, 5210 Troisdorf Process for the recovery and reuse of heavy metal oxidation catalyst from residues in the Witten DMT process
DE3407925C1 (en) * 1984-03-03 1985-09-05 Dynamit Nobel Ag, 5210 Troisdorf Process for the preparation of dimethyl terephthalate from p-xylene and methanol
DE3904586A1 (en) * 1989-02-16 1990-08-23 Huels Chemische Werke Ag METHOD FOR THE PRODUCTION OF DMT INTERMEDIATE PRODUCT OF CERTAIN PURITY, AND ITS PROCESSING TO PURE DMT AND / OR MEDIUM OR HIGH PURITY TEREPHTHALIC ACID
DK0464064T3 (en) * 1989-03-21 1995-05-15 Josef Hobelsberger Method and apparatus for making ice figures

Also Published As

Publication number Publication date
DE19618152C1 (en) 1997-08-14
KR970074745A (en) 1997-12-10
TW397818B (en) 2000-07-11
CZ11097A3 (en) 1998-04-15
EP0806406A1 (en) 1997-11-12
JPH09301930A (en) 1997-11-25
TR199700142A2 (en) 1997-11-21
MX9703082A (en) 1997-11-29

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