GB1388289A - Production and recovery of terephthalic acid - Google Patents

Production and recovery of terephthalic acid

Info

Publication number
GB1388289A
GB1388289A GB3981872A GB3981872A GB1388289A GB 1388289 A GB1388289 A GB 1388289A GB 3981872 A GB3981872 A GB 3981872A GB 3981872 A GB3981872 A GB 3981872A GB 1388289 A GB1388289 A GB 1388289A
Authority
GB
United Kingdom
Prior art keywords
terephthalic acid
slurry
temperature
zone
range
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
Application number
GB3981872A
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.)
Phillips Petroleum Co
Original Assignee
Phillips Petroleum Co
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 Phillips Petroleum Co filed Critical Phillips Petroleum Co
Priority to GB3981872A priority Critical patent/GB1388289A/en
Publication of GB1388289A publication Critical patent/GB1388289A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
    • C07C63/04—Monocyclic monocarboxylic acids
    • C07C63/06—Benzoic acid
    • C07C63/08—Salts thereof
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1388289 Production and recovery of terephthalic acid PHILLIPS PETROLEUM CO 25 Aug 1972 39818/72 Heading C2C A process for the preparation of terephthalic acid from an aqueous solution of dipotassium terephthalate comprises (i) reacting the dipotassium terephthalate in said solution with benzoic acid to produce an aqueous slurry containing dissolved potassium benzoate and undissolved benzoic acid, potassium hydrogen terephthalate, and terephthalic acid; (ii) countercurrently contacting said slurry in an elongated zone with a stream of water, the temperature in said zone adjacent the upstream end (considered in the direction of travel of the slurry) being maintained at a temperature in the range 38- 66‹ C. and adjacent the downstream end at a lower temperature, such lower temperature being in the range 10-38‹ C.; (iii) recovering from said upstream end an aqueous solution of potassium benzoate and from said downstream end an aqueous slurry of benzoic acid, potassium hydrogen terephthalate and terephthalic acid; (iv) countercurrently contacting the slurry recovered in step (iii) in a second elongated contacting zone with a second stream of water, the temperature in said second zone adjacent the upstream end (considered in the direction of travel of the slurry) being maintained at a temperature in the range 66-121‹ C. and adjacent the downstream end at a lower temperature, such lower temperature being in the range 24-66‹ C.; (v) recovering from the upstream end of said second zone a second aqueous solution of potassium benzoate and from the downstream and an aqueous slurry of terephthalic acid; and (vi) separating the terephthalic acid from the slurry recovered in step (v).
GB3981872A 1972-08-25 1972-08-25 Production and recovery of terephthalic acid Expired GB1388289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3981872A GB1388289A (en) 1972-08-25 1972-08-25 Production and recovery of terephthalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3981872A GB1388289A (en) 1972-08-25 1972-08-25 Production and recovery of terephthalic acid

Publications (1)

Publication Number Publication Date
GB1388289A true GB1388289A (en) 1975-03-26

Family

ID=10411676

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3981872A Expired GB1388289A (en) 1972-08-25 1972-08-25 Production and recovery of terephthalic acid

Country Status (1)

Country Link
GB (1) GB1388289A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005070862A2 (en) * 2004-01-15 2005-08-04 Eastman Chemical Company Process for production of a dried carboxylic acid cake suitable for use in polyester production
US7074954B2 (en) 2002-12-09 2006-07-11 Eastman Chemical Company Process for the oxidative purification of terephthalic acid
US7132566B2 (en) 2003-09-22 2006-11-07 Eastman Chemical Company Process for the purification of a crude carboxylic acid slurry
US7358392B2 (en) 2002-12-09 2008-04-15 Eastman Chemical Company Process for the oxidative purification of terephthalic acid
US8455680B2 (en) 2008-01-15 2013-06-04 Eastman Chemical Company Carboxylic acid production process employing solvent from esterification of lignocellulosic material
US8614350B2 (en) 2008-01-15 2013-12-24 Eastman Chemical Company Carboxylic acid production process employing solvent from esterification of lignocellulosic material

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7074954B2 (en) 2002-12-09 2006-07-11 Eastman Chemical Company Process for the oxidative purification of terephthalic acid
US7358392B2 (en) 2002-12-09 2008-04-15 Eastman Chemical Company Process for the oxidative purification of terephthalic acid
US7132566B2 (en) 2003-09-22 2006-11-07 Eastman Chemical Company Process for the purification of a crude carboxylic acid slurry
WO2005070862A2 (en) * 2004-01-15 2005-08-04 Eastman Chemical Company Process for production of a dried carboxylic acid cake suitable for use in polyester production
WO2005070862A3 (en) * 2004-01-15 2005-09-22 Eastman Chem Co Process for production of a dried carboxylic acid cake suitable for use in polyester production
JP2007517896A (en) * 2004-01-15 2007-07-05 イーストマン ケミカル カンパニー Process for producing a dry carboxylic acid cake suitable for use in polyester production
US7546747B2 (en) 2004-01-15 2009-06-16 Eastman Chemical Company Process for production of a dried carboxylic acid cake suitable for use in polyester production
EP2450342A3 (en) * 2004-01-15 2013-10-23 Grupo Petrotemex, S.A. De C.V. Process for production of a dried carboxylic acid cake suitable for use in polyester production
US8455680B2 (en) 2008-01-15 2013-06-04 Eastman Chemical Company Carboxylic acid production process employing solvent from esterification of lignocellulosic material
US8614350B2 (en) 2008-01-15 2013-12-24 Eastman Chemical Company Carboxylic acid production process employing solvent from esterification of lignocellulosic material

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee