KR850001723A - p-크실렌으로부터 테레프탈산의 제조방법 - Google Patents

p-크실렌으로부터 테레프탈산의 제조방법 Download PDF

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KR850001723A
KR850001723A KR1019840004665A KR840004665A KR850001723A KR 850001723 A KR850001723 A KR 850001723A KR 1019840004665 A KR1019840004665 A KR 1019840004665A KR 840004665 A KR840004665 A KR 840004665A KR 850001723 A KR850001723 A KR 850001723A
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South Korea
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gas
xylene
terephthalic acid
reaction
adjusted
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KR1019840004665A
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KR910006326B1 (ko
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히로시(외 1) 하시즈메
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스즈끼 샤부로오
미쓰비시 가가꾸 고오교오 가부시끼 가이샤
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    • 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
    • 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
    • C07C51/265—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 having alkyl side chains which are oxidised to carboxyl groups
    • 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
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

내용 없음

Description

p-크실렌으로부터 테레프탈산의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 p-크실렌의 주산화를 위한 반응용기의 개략도해이다.

Claims (9)

  1. p-크실렌을 산화하기 위하여 사용되는 반응용기로부터의 배기가스내에 포함된 산소가스의 농도가 2내지 8부피%인 아세트산 용매내에서 180내지 230℃의 온도에서 코발트, 망간 및 브롬을 포함하는 촉매의 존재하에 공기에 의하여 p-크실렌을 테레프탈산으로 산화시키는, p-크실렌으로부터 테레프탈산을 연속제조하는 방법에 있어서,
    (a) 상기 반응용기로부터 끌어낸 기체를 이 기체로 부터 응축물을 제거하기 위하여 응축시켜 이로써 산화배기가스를 제조하는 단계와, (b) 재순환가스의 방출가스에 대한 부피비가 0.3내지 5이고 상기 방출가스는 반응계의 외부로 배기되도록 하는, 제조된 산화배기가스를 방출가스와 재순환가스로 분할하는 단계, (c) 상기 재순환가스를 상기 반응용기의 액상에 계속적으로 공급하는 단계, 그리고 (d) 상기 재순환가 스가공급되지 않는 반응상태보다 더 높은 반응압력하에 p-크실렌의 산화반응을 수행하는 단계, 들로 이루어지는 것을 특징으로 하는 p-크실렌으로부터 테레프탈산을 연속적으로 제조하는 방법.
  2. 제1항에 있어서, 반응용기의 기체상내의 응축가스에 대한 비응축가스의 압력비는 0.65내지 3으로 조정되는 것을 특징으로 하는 p-크실렌으로부터 테레프탈산을 제조하는 방법.
  3. 제1항에 있어서, 재순환가스의 공급량은 반응기의 기체상내의 산소가스의 부분압이 상기 재순환가스가 공급되지 않는 반응조건보다 1.3내지 5배 높도록 조정되는 것을 특징으로 하는 p-크실렌으로부터 테레프탈산의 제조방법.
  4. 제1항 내지 제3항중의 어느하나에 있어서, p-크실렌의 산화를 위한 반응계의 수분농도는 7내지 14중량%로 조정되는 것을 특징으로 하는 p-크실렌으로부터 테레프탈산의 제조방법.
  5. 제1항 내지 제3항중 어느하나에 있어서, 산화반응은 180℃내지 22℃의 온도에서 수행되는 것을 특징으로 하는 p-크실렌으로부터 테레프탈산의 제조방법.
  6. 제1항 내지 제3항중 어느하나에 있어서, 산화배기가스중의 산소의 농도가 4내지 7중량%로 조정되는 것을 특징으로 하는 p-크실렌으로부터 테레프탈산의 제조방법.
  7. 제1항 내지 제3항중 어느하나에 있어서, 방출가스에 대한 재순환가스의 부피비는 0.5내지 3으로 조정되는 것을 특징으로 하는 p-크실렌으로부터 테레프탈산의 제조방법.
  8. 제2항에 있어서, 응축가스에 대한 비응축가스의 압력비는 0.7내지 2로 조정되는 것을 특징으로 하는 p-크실렌으로부터 테레프탈산의 제조방법.
  9. 제3항에 있어서, 반응기의 기체상의 산소가스의 부분압은 재순환가스가 공급되지 않는 반응조건보다 1.5내지 3배 높은 것을 특징으로 하는 p-크실렌으로부터 테레프탈산의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019840004665A 1983-08-09 1984-08-04 p-크실렌으로부터 테레프탈산의 제조방법 KR910006326B1 (ko)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP83-145407 1983-08-09
JP58145407A JPS6036439A (ja) 1983-08-09 1983-08-09 テレフタル酸の製法
JP58-145407 1983-08-09

Publications (2)

Publication Number Publication Date
KR850001723A true KR850001723A (ko) 1985-04-01
KR910006326B1 KR910006326B1 (ko) 1991-08-20

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KR1019840004665A KR910006326B1 (ko) 1983-08-09 1984-08-04 p-크실렌으로부터 테레프탈산의 제조방법

Country Status (5)

Country Link
US (1) US4593122A (ko)
EP (1) EP0135341B1 (ko)
JP (1) JPS6036439A (ko)
KR (1) KR910006326B1 (ko)
DE (1) DE3466978D1 (ko)

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Also Published As

Publication number Publication date
JPH0532381B2 (ko) 1993-05-14
DE3466978D1 (en) 1987-12-03
JPS6036439A (ja) 1985-02-25
KR910006326B1 (ko) 1991-08-20
EP0135341B1 (en) 1987-10-28
EP0135341A1 (en) 1985-03-27
US4593122A (en) 1986-06-03

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