BR9712567A - Process for producing an aromatic carboxylic acid and improved liquid-solid separation unit - Google Patents

Process for producing an aromatic carboxylic acid and improved liquid-solid separation unit

Info

Publication number
BR9712567A
BR9712567A BR9712567-9A BR9712567A BR9712567A BR 9712567 A BR9712567 A BR 9712567A BR 9712567 A BR9712567 A BR 9712567A BR 9712567 A BR9712567 A BR 9712567A
Authority
BR
Brazil
Prior art keywords
carboxylic acid
aromatic carboxylic
separation unit
producing
paste
Prior art date
Application number
BR9712567-9A
Other languages
Portuguese (pt)
Inventor
Peter Anthony Donaldson
Michael William Gardner
Ian Peter Milne
Philip Nigel Ward
Andrew Martin Hollins
Geoffrey William Usher
Original Assignee
Du Pont
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
Priority claimed from GBGB9622266.6A external-priority patent/GB9622266D0/en
Priority claimed from GBGB9622250.0A external-priority patent/GB9622250D0/en
Application filed by Du Pont filed Critical Du Pont
Publication of BR9712567A publication Critical patent/BR9712567A/en

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

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)

Abstract

<B>''PROCESSO PARA PRODUZIR UM áCIDO CARBOXìLICO AROMáTICO E UNIDADE DE SEPARAçãO DE SóLIDOS-LìQUIDO APERFEIçOADA''<D>. A presente invenção se refere à produção de ácidos aromáticos carboxílicos, tal como o ácido tereftálico. Dita produção de ácidos aromáticos carboxílicos é realizada através da oxidação em fase líquida de um seu precursor, em que uma pasta de cristais de ácido carboxílcio em um licor mãe à base de ácido carboxílico alifático é retirada do reator de oxidação (50), resfriada e passada para uma unidade de sepração de sólidos-líquido (66) para separar o licor mãe dos cristais de ácido carboxílico aromático. Depois do resfriamento, a pasta é direcionda de modo a assegurar a redução na extensão na qual as partículas pequenas presentes na pasta interferem no processo de separação se sólidos-líquido.<B> '' PROCESS TO PRODUCE AN AROMATIC CARBOXYLIC ACID AND PERFECTED LIQUID-LIQUID SEPARATION UNIT '' <D>. The present invention relates to the production of aromatic carboxylic acids, such as terephthalic acid. Said production of aromatic carboxylic acids is carried out through the liquid phase oxidation of a precursor, in which a paste of carboxylic acid crystals in a mother liquor based on aliphatic carboxylic acid is removed from the oxidation reactor (50), cooled and passed to a solid-liquid separation unit (66) to separate the mother liquor from the aromatic carboxylic acid crystals. After cooling, the paste is directed to ensure the reduction in the extent to which the small particles present in the paste interfere with the solid-liquid separation process.

BR9712567-9A 1996-10-25 1997-10-08 Process for producing an aromatic carboxylic acid and improved liquid-solid separation unit BR9712567A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GBGB9622266.6A GB9622266D0 (en) 1996-10-25 1996-10-25 Production of aromatic carbolxylic acids
GBGB9622250.0A GB9622250D0 (en) 1996-10-25 1996-10-25 Production of aromatic carboxylic acids
US3212796P 1996-12-05 1996-12-05
US3225196P 1996-12-05 1996-12-05
PCT/GB1997/002774 WO1998018749A1 (en) 1996-10-25 1997-10-08 Production of aromatic carboxylic acids

Publications (1)

Publication Number Publication Date
BR9712567A true BR9712567A (en) 1999-10-19

Family

ID=27451544

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9712567-9A BR9712567A (en) 1996-10-25 1997-10-08 Process for producing an aromatic carboxylic acid and improved liquid-solid separation unit

Country Status (7)

Country Link
EP (1) EP0937026A1 (en)
KR (1) KR20000052790A (en)
CN (1) CN1235593A (en)
AU (1) AU4629997A (en)
BR (1) BR9712567A (en)
TR (1) TR199900884T2 (en)
WO (1) WO1998018749A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102992999B (en) * 2011-09-17 2014-08-27 中国石油化工股份有限公司 Matched filtering and washing method for crude m-phthalic acid in oxidation unit of refined m-phthalic acid device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB970492A (en) * 1960-10-18 1964-09-23 Standard Oil Co Production of aromatic carboxylic acids
US3683018A (en) * 1969-05-26 1972-08-08 Standard Oil Co Integrated oxidation of isomeric xylene mixture to isomeric phthalic acid mixture and separation of mixture of isomeric phthalic acids into individual isomer products
JPS5414098B1 (en) * 1970-12-25 1979-06-05
GB2072162B (en) * 1980-03-21 1984-03-21 Labofina Sa Process for the production and the recovery of terephthalic acid
GB9310070D0 (en) * 1992-05-29 1993-06-30 Ici Plc Process for the production of purified terephthalic acid

Also Published As

Publication number Publication date
CN1235593A (en) 1999-11-17
EP0937026A1 (en) 1999-08-25
TR199900884T2 (en) 1999-07-21
KR20000052790A (en) 2000-08-25
AU4629997A (en) 1998-05-22
WO1998018749A1 (en) 1998-05-07

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]