JPS54160331A - Drying of terephthalic acid - Google Patents

Drying of terephthalic acid

Info

Publication number
JPS54160331A
JPS54160331A JP6826078A JP6826078A JPS54160331A JP S54160331 A JPS54160331 A JP S54160331A JP 6826078 A JP6826078 A JP 6826078A JP 6826078 A JP6826078 A JP 6826078A JP S54160331 A JPS54160331 A JP S54160331A
Authority
JP
Japan
Prior art keywords
slurry
water
heating tube
acetic
acid
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.)
Granted
Application number
JP6826078A
Other languages
Japanese (ja)
Other versions
JPS5811418B2 (en
Inventor
Fujio Tsuchiya
Kenzo Yamamoto
Katsumasa Yamaguchi
Akio Okanoe
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.)
Orient Chemical Industries Ltd
JGC Corp
Original Assignee
Orient Chemical Industries Ltd
JGC Corp
Japan Gasoline Co Ltd
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 Orient Chemical Industries Ltd, JGC Corp, Japan Gasoline Co Ltd filed Critical Orient Chemical Industries Ltd
Priority to JP53068260A priority Critical patent/JPS5811418B2/en
Priority to SU792776761A priority patent/SU1087072A3/en
Priority to DE19792923382 priority patent/DE2923382C2/en
Priority to GB7920047A priority patent/GB2024810B/en
Priority to CS397979A priority patent/CS207795B2/en
Priority to DD21350079A priority patent/DD144258A5/en
Publication of JPS54160331A publication Critical patent/JPS54160331A/en
Publication of JPS5811418B2 publication Critical patent/JPS5811418B2/en
Expired legal-status Critical Current

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

PURPOSE: To dry terephthalic acid in a steady state efficiently with saving energy, by the use of a dryer comprising a separator or relatively large volume connected to a heating tube of relatively small diameter under critical conditions not to cause clogging of the tube.
CONSTITUTION: Acetic or water or both are removed from a slurry comprising terephthalic and acetic acids, and/or water to give dry terephthatic acid (TA). The slurry is fed to the heating tube 3 of relatively small diameter and converted into a mixture of solids and gases, which is released to the separator 7 to separate the solids from the gases. Acetic acid or water or both are removed to give dry powdery terephthalic acid. The TA content in the slurry is kept below the value determined by the formula: C=(2.5θ0.4+66)α+ (3.2 θ0.35+74(1-α) [θ is the inlet 4 temperature of the heating tube; α is the water content of the slurry medium, (1-α) is the acetic acid fraction].
EFFECT: Slurries with a high concentration can be dried.
COPYRIGHT: (C)1979,JPO&Japio
JP53068260A 1978-06-08 1978-06-08 How to dry terephthalic acid Expired JPS5811418B2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP53068260A JPS5811418B2 (en) 1978-06-08 1978-06-08 How to dry terephthalic acid
SU792776761A SU1087072A3 (en) 1978-06-08 1979-06-07 Method for isolating therephthalic acid
DE19792923382 DE2923382C2 (en) 1978-06-08 1979-06-08 Process for the production of dried terephthalic acid
GB7920047A GB2024810B (en) 1978-06-08 1979-06-08 Method of obtaining dried terephthalic acid
CS397979A CS207795B2 (en) 1978-06-08 1979-06-08 Method of making the dried terephtale acid
DD21350079A DD144258A5 (en) 1978-06-08 1979-06-08 PROCESS FOR THE PRODUCTION OF DRIED TEREPHTHALIC ACID

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53068260A JPS5811418B2 (en) 1978-06-08 1978-06-08 How to dry terephthalic acid

Publications (2)

Publication Number Publication Date
JPS54160331A true JPS54160331A (en) 1979-12-19
JPS5811418B2 JPS5811418B2 (en) 1983-03-02

Family

ID=13368598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53068260A Expired JPS5811418B2 (en) 1978-06-08 1978-06-08 How to dry terephthalic acid

Country Status (6)

Country Link
JP (1) JPS5811418B2 (en)
CS (1) CS207795B2 (en)
DD (1) DD144258A5 (en)
DE (1) DE2923382C2 (en)
GB (1) GB2024810B (en)
SU (1) SU1087072A3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1289177B1 (en) * 1997-01-17 1998-09-29 Lonza Spa POLYCARBOXYLIC ACID RECOVERY PROCEDURE
US6972342B1 (en) * 1997-04-10 2005-12-06 Invista North America S.A R.L. Method for producing crystalline carboxylic acids
WO1998045238A1 (en) * 1997-04-10 1998-10-15 E.I. Du Pont De Nemours And Company Improved method for producing crystalline carboxylic acids and apparatus therefor
AT504996B1 (en) 2007-03-02 2009-03-15 Andritz Tech & Asset Man Gmbh METHOD AND DEVICE FOR DRYING CRYSTALLINE CARBOXYLIC ACIDS

Also Published As

Publication number Publication date
DD144258A5 (en) 1980-10-08
DE2923382C2 (en) 1983-09-08
GB2024810B (en) 1982-09-22
CS207795B2 (en) 1981-08-31
JPS5811418B2 (en) 1983-03-02
DE2923382A1 (en) 1979-12-20
GB2024810A (en) 1980-01-16
SU1087072A3 (en) 1984-04-15

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