KR920016399A - 테레프탈산의 생산방법 - Google Patents

테레프탈산의 생산방법 Download PDF

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Publication number
KR920016399A
KR920016399A KR1019920001597A KR920001597A KR920016399A KR 920016399 A KR920016399 A KR 920016399A KR 1019920001597 A KR1019920001597 A KR 1019920001597A KR 920001597 A KR920001597 A KR 920001597A KR 920016399 A KR920016399 A KR 920016399A
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KR
South Korea
Prior art keywords
mother liquor
precipitate
terephthalic acid
solution
indirectly
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KR1019920001597A
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English (en)
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KR100214397B1 (ko
Inventor
힌드마쉬 에릭
아써 터너 존
파커 데이비드
Original Assignee
원본미기재
임페리알 케미칼 인더스트리스 피엘씨
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Publication of KR920016399A publication Critical patent/KR920016399A/ko
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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
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • 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
    • 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
    • C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
    • 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

테레프탈산의 생산방법.
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 공정의 흐름도이다. 제2도는 본 발명의 공정에 사용되는 증류기 컬럼이다.

Claims (8)

  1. 수성 모액을 처리하여 테레프탈산과 제2의 모액으로 이루어진 덜 순순한 침전물을 만든뒤, a) 덜순수한 침전물을 직접 또는 간접적으로 반응 매질로 되돌려 보내는 단계, b)최소한 일부분의 상기 제2모액의 물을 사용하여 직접 또는 처리한 후에 간접적으로 크루드한 고체를 용해시키는 단계; c)상기 제2모액을 분별 증류기를 통과시키거나 또는 리플럭스 시키고 처리된 물을 상기 증류기에서 회수한뒤 환원단계 이후에 나온 용액에서부터 회수한 침전물을 사용하여 세척하는 단계;중 최소한 한 단계를 거치는 것을 특징으로하는 아세트산으로 이루어진 액상 반응 매질내에서 파라크실렌을 산화시켜 테레프탈산을 만들고 이를 액상매질에서부터 크루드한 생성물로 분리해낸다음 물로 이루어진 액체에 용해시켜 용액을 만든뒤 이를 환원조건하에서 불균질한 촉매 및 수소와 접촉시켜 최소한 약간의 불순물들을 제거한뒤 이 용액을 냉각시켜 정제된 고체 침전물 테레프탈산을 침전시키고 이 침전물에서부터 수성 모액을 분리해내는 것으로 구성되는 테레프탈산의 제조방법.
  2. 제1항에 있어서, 단계 a)의 덜순수한 침점물이 수성 모액으로 더 냉각시켜 제조된 방법.
  3. 제2항에 있어서, 수성 모액을 15~100°C의 온도까지 냉각시킨 방법.
  4. 전기항중 어느 한 항에 있어서, 단계 c)의 분별증류가 환류비를 2~10으로 하여 행해진 방법.
  5. 제4항에 있어서, 25~125의 이론단을 사용한 방법.
  6. 제4항 또는 제5항에 있어서, 분별증류하기 위해 되돌려보낸 모액이 컬럼의 탑상으로부터 0-30%의 이론단으로 공급되는 방법.
  7. 전기한 항의 어느 한 항에 있어서, 순수한 테레프탈산을 제조하기위한 침전단계가 최소한 3bar의 압력에서 실시되는 방법.
  8. 전기한 항중 어느 한 항에 있어서, 최소한 일부분의 수성 모액을 사용하여 그 자체로서 직접 또는 처리한 후 간접적으로 크루드 고체를 용해 시키고 및/또는 분별증류기에 통과시킨후 처리된 물을 분별증류기로부터 회수하고 환원 단계후 용액으로부터 회수한 침전물을 세척하는데 사용하는 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.
KR1019920001597A 1991-02-05 1992-02-01 테레프탈산의 생산방법 KR100214397B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9102393.7 1991-02-05
GB919102393A GB9102393D0 (en) 1991-02-05 1991-02-05 Production of terephthalic acid

Publications (2)

Publication Number Publication Date
KR920016399A true KR920016399A (ko) 1992-09-24
KR100214397B1 KR100214397B1 (ko) 1999-08-02

Family

ID=10689524

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920001597A KR100214397B1 (ko) 1991-02-05 1992-02-01 테레프탈산의 생산방법

Country Status (12)

Country Link
US (2) US5304676A (ko)
EP (1) EP0498591B2 (ko)
JP (1) JPH0558948A (ko)
KR (1) KR100214397B1 (ko)
CN (2) CN1038580C (ko)
CA (1) CA2059719C (ko)
DE (1) DE69201978T3 (ko)
ES (1) ES2070586T5 (ko)
GB (2) GB9102393D0 (ko)
IN (1) IN185008B (ko)
MX (1) MX9200478A (ko)
TW (1) TW326037B (ko)

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Also Published As

Publication number Publication date
CN1130328C (zh) 2003-12-10
EP0498591A2 (en) 1992-08-12
EP0498591B2 (en) 2004-10-13
GB9202241D0 (en) 1992-03-18
US5304676A (en) 1994-04-19
JPH0558948A (ja) 1993-03-09
CN1038580C (zh) 1998-06-03
EP0498591B1 (en) 1995-04-12
CA2059719C (en) 2002-10-08
USRE36008E (en) 1998-12-22
MX9200478A (es) 1992-08-01
KR100214397B1 (ko) 1999-08-02
DE69201978D1 (de) 1995-05-18
ES2070586T3 (es) 1995-06-01
CA2059719A1 (en) 1992-08-06
DE69201978T3 (de) 2005-03-10
CN1064675A (zh) 1992-09-23
DE69201978T2 (de) 1995-08-24
TW326037B (en) 1998-02-01
CN1150944A (zh) 1997-06-04
ES2070586T5 (es) 2005-05-01
IN185008B (ko) 2000-10-21
GB9102393D0 (en) 1991-03-20
EP0498591A3 (en) 1993-01-27

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