TWI266764B - Method for producing terephthalic acid - Google Patents

Method for producing terephthalic acid

Info

Publication number
TWI266764B
TWI266764B TW093134052A TW93134052A TWI266764B TW I266764 B TWI266764 B TW I266764B TW 093134052 A TW093134052 A TW 093134052A TW 93134052 A TW93134052 A TW 93134052A TW I266764 B TWI266764 B TW I266764B
Authority
TW
Taiwan
Prior art keywords
terephthalic acid
water
dissolving
xylene
crude terephthalic
Prior art date
Application number
TW093134052A
Other languages
Chinese (zh)
Other versions
TW200530175A (en
Inventor
Fujimasa Nakao
Daisuke Yamamoto
Original Assignee
Mitsui Chemicals Inc
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 Mitsui Chemicals Inc filed Critical Mitsui Chemicals Inc
Publication of TW200530175A publication Critical patent/TW200530175A/en
Application granted granted Critical
Publication of TWI266764B publication Critical patent/TWI266764B/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
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • 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
    • 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
    • C07C63/14—Monocyclic dicarboxylic acids
    • C07C63/15—Monocyclic dicarboxylic acids all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
    • C07C63/26—1,4 - Benzenedicarboxylic acid

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

To provide a method for producing terephthalic acid, capable of reusing discharged water from a process of purifying crude terephthalic acid as the water for purifying the crude terephthalic acid and further capable of improving the yield of terephthalic acid. This method for producing the terephthalic acid is provided by dissolving the crude terephthalic acid obtained by oxidizing p-xylene by heating under pressure, evaporating water by reducing the pressure to crystallize the terephthalic acid, bringing condensed water obtained by condensing the evaporated water in contact with p-xylene, then separating the water and reusing in any of the processes of the production of the terephthalic acid. Also, the condensed water is reused as a water for dissolving the crude terephthalic acid. It is preferable to evaporate 30-70 wt.% water necessary for dissolving the crude terephthalic acid from a crystallization vessel by adjusting the crystallization condition and to remove impurity from the evaporated water by a p-xylene extraction.
TW093134052A 2003-12-19 2004-11-09 Method for producing terephthalic acid TWI266764B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003421776 2003-12-19

Publications (2)

Publication Number Publication Date
TW200530175A TW200530175A (en) 2005-09-16
TWI266764B true TWI266764B (en) 2006-11-21

Family

ID=34878924

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093134052A TWI266764B (en) 2003-12-19 2004-11-09 Method for producing terephthalic acid

Country Status (3)

Country Link
KR (1) KR100650536B1 (en)
CN (1) CN1318376C (en)
TW (1) TWI266764B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102026952B (en) * 2008-05-20 2014-05-07 株式会社日立制作所 Method for treating separated mother liquor from terephthalic acid refinement

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2899928B2 (en) * 1991-03-07 1999-06-02 三井化学株式会社 Method for treating purified mother liquor of terephthalic acid
GB9714907D0 (en) * 1997-07-16 1997-09-17 Ici Plc Production of aromatic carboxylic acids
US6143926A (en) * 1999-09-21 2000-11-07 E. I. Du Pont De Nemours And Company Process for producing pure terephthalic acid with improved recovery of precursors, solvent and methyl acetate
US7196215B2 (en) * 2001-06-04 2007-03-27 Eastman Chemical Company Process for the production of purified terephthalic acid

Also Published As

Publication number Publication date
CN1318376C (en) 2007-05-30
KR20050062360A (en) 2005-06-23
CN1651393A (en) 2005-08-10
TW200530175A (en) 2005-09-16
KR100650536B1 (en) 2006-11-27

Similar Documents

Publication Publication Date Title
CA2467001A1 (en) Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid
PT2292581E (en) Extraction process for removal of impurities from mother liquor in the synthesis of terephthalic acid
KR101543199B1 (en) Method for Production of L-Methionine and Related Products
ES2689897T3 (en) Coupling of the distillation purification with a partial condenser for the prior purification of isophorondiamine
AU2012295625B2 (en) Recovery of carboxylic acid from their magnesium salts by precipitation using hydrochloric acid, useful for fermentation broth work-up
CN107778244B (en) Method for refining and purifying caprolactam
RU2009101767A (en) METHOD AND INSTALLATION FOR CONCENTRATION OF WASTE SULFURIC ACID FROM NITRATION PROCESSES
IN2012DE01021A (en)
CN108659061B (en) Purification treatment method of sucralose crystallization mother liquor
CN103242384A (en) Novel sucralose mother liquor extraction process
CN103864689B (en) A kind of method of the condensate liquid obtained in the evaporative crystallization steps of purification of aqueous ammonium sulfate phase
CN116535338B (en) Potassium salt recycling process in production process of D, L-methionine
CN111393281A (en) Environment-friendly clean production method of high-purity glycolic acid
CN111393323A (en) Environment-friendly clean production method of high-purity cyanoacetic acid, cyanoacetic ester and malonic ester
TWI266764B (en) Method for producing terephthalic acid
CN101058527A (en) Concentration of glycerol
CN112850751A (en) Method for recovering sodium sulfate in nicotine purification process
CN111689635A (en) Method for treating waste water containing ammonium acetate
CN111518057A (en) Acesulfame potassium crystal liquid purification treatment method
WO2002068330A3 (en) Process and apparatus for the production of calcium bromide by liquid-liquid extraction
CN114736118B (en) Method for separating 3-methoxy-4-hydroxy mandelic acid and preparing high-purity product thereof
TH72307A (en) Terephthalic acid production process
CN110386877B (en) Separation method of hydrolysis mixture
JP4657674B2 (en) Method for producing terephthalic acid
WO2009026774A1 (en) The process of producing formic acid with phosphoric acid extracted and sodium formate