KR920003120B1 - 테레프탈산디메틸 에스테르를 경유하여 p-키실올과 메타놀로부터 테레프탈산의 제조방법 - Google Patents
테레프탈산디메틸 에스테르를 경유하여 p-키실올과 메타놀로부터 테레프탈산의 제조방법 Download PDFInfo
- Publication number
- KR920003120B1 KR920003120B1 KR1019850001275A KR850001275A KR920003120B1 KR 920003120 B1 KR920003120 B1 KR 920003120B1 KR 1019850001275 A KR1019850001275 A KR 1019850001275A KR 850001275 A KR850001275 A KR 850001275A KR 920003120 B1 KR920003120 B1 KR 920003120B1
- Authority
- KR
- South Korea
- Prior art keywords
- methanol
- esterification
- steam
- terephthalic acid
- bar
- 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
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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
- C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/39—Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester
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- 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
Description
Claims (7)
- p-키실올(p-X)과 메타놀로부터 테레프탈산디메틸 에스테르를 경유하여, 용액상태에서 공기 산소로써 촉매제로서의 용해된 중금속결합 가운데에서 p-X와 압도적으로 p-톨루일 산메틸에스테르(p-TE)를 함유하고 있고 산화로 환원된 분별증류와의 혼합물을 140-170℃의 온도에서 그리고 4-8bar의 기압에서 주로 p-톨루일 산(p-TS)과 테레프탈산모노메틸에스테르(MMT)를 함유하고 있는 산화물로 산화함으로써 테레프탈산(TPS)을 제조하는 방법으로 그 산화물을 고압으로 올려져 용액으로 있다가 기화된 메타놀을 가지고 220-280℃의 온도에서 또 20-25bar의 기압에서 주로 p-TE과 DTM를 함유한 조(祖)에스테르로 에스테르화하고 에스테르화로부터 조 에스테르 분별증류 및 메타놀함유 증기분별증류를 제외시키고 조 에스테르를 p-TE-분별증류로 증류분리시키고(이 두가지 분별증류는 산화로 환원될 수 있다) 조(祖)-DMT-분별증류 및 잔사분별증류를 행하여 이 조-DMT-분별증류를 물로써 가수분해하고 이로부터 생기는 TPS의 획득 및 메타놀-물-혼합물의 분리를 행하는 데에서, 메타놀을 함유하고 있는 증기분별증류와 메타놀-물-혼합물이 정류를 통하여 고압과 고온 아래에서 메타놀이 풍부한 꼭대기부분에 생기는 메타놀이 고압에서 증기로서 빼내질 수 있다는 것과 그리고 산화물의 에스테르화(Feresterung)가 응축에 의하여 에스테르화 기압과 에스테르화 온도를 올려진 메타놀함유 증기로써 이루어진다는 것을 특징으로 하는 테리프탈산의 제조방법.
- 상기 1항에 있어서, 에스테르화를 위해 투여된 메타놀함유 증기가 2-20bar의 기압에서 가장 좋게는 4-8bar의 기압에서의 정류를 통하여 만들어짐을 특징으로 하는 상기의 방법.
- 상기 1항에 있어서, 메타놀함유 증기를 농축시킬 때 생기는 열이 메타놀함유 증기를 에스테르화 온도로 가열시키는데 쓰여짐을 특징으로 하는 상기의 방법.
- 상기 1항에 있어서, 응축되는 메타놀함유 증기의 응축비율이 1.2:1에서 15:1까지 가장 좋게는 3:1에서 9:1까지이며, 응축시 응축기를 벗어날 때 도달되는 최고온도가 15°- 300℃ 가장 좋게는 220°- 280℃에 이른다는 점을 특징으로 하는 상기의 방법.
- 상기 1항에 있어서, 에스테르화에서 제거된 증기가 세척되고 이어서 증기가 완터빈 안에서 메타놀 응축기 또는 발전기의 가동릉 위해 0.1-8bar로 이완되고 또 그같은 공정으로 다시 환원된다는 점을 특징으로 하는 상기의 방법.
- 상기 5항에 있어서, 증기는 터빈에 들어가기에 앞서 일부분은 응결되어 그 응결된 일부가 증기의 세척에 사용된다는 점을 특징으로 하는 상기의 방법.
- 상기 5항에 있어서, 증기가 공정용수에 의하여 세척된다느 점을 특징으로 하는 상기의 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP3407912.2 | 1984-03-03 | ||
DE3407912A DE3407912C1 (de) | 1984-03-03 | 1984-03-03 | Verfahren zur Herstellung von Terephthalsaeure ueber Terephthalsaeuredimethylester aus p-Xylol und Methanol |
Publications (2)
Publication Number | Publication Date |
---|---|
KR850007056A KR850007056A (ko) | 1985-10-30 |
KR920003120B1 true KR920003120B1 (ko) | 1992-04-20 |
Family
ID=6229529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019850001275A Expired KR920003120B1 (ko) | 1984-03-03 | 1985-02-28 | 테레프탈산디메틸 에스테르를 경유하여 p-키실올과 메타놀로부터 테레프탈산의 제조방법 |
Country Status (20)
Country | Link |
---|---|
US (1) | US4642377A (ko) |
EP (1) | EP0157122B1 (ko) |
JP (1) | JPH0688937B2 (ko) |
KR (1) | KR920003120B1 (ko) |
BG (1) | BG45697A3 (ko) |
BR (1) | BR8500935A (ko) |
CS (1) | CS251095B2 (ko) |
DD (1) | DD232912A5 (ko) |
DE (2) | DE3407912C1 (ko) |
EG (1) | EG17052A (ko) |
ES (1) | ES8602590A1 (ko) |
IN (1) | IN163350B (ko) |
MX (1) | MX162239A (ko) |
PL (1) | PL144915B1 (ko) |
PT (1) | PT80041B (ko) |
RO (1) | RO91879B (ko) |
SU (1) | SU1581218A3 (ko) |
TR (1) | TR22497A (ko) |
YU (1) | YU44722B (ko) |
ZA (1) | ZA851579B (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4026732A1 (de) * | 1990-08-24 | 1992-02-27 | Huels Chemische Werke Ag | Verfahren zur reinigung eines oxidationsabgases mit energierueckgewinnung |
US6472557B1 (en) | 1999-02-10 | 2002-10-29 | Eastman Chemical Company | Process for recycling polyesters |
CN110078284B (zh) * | 2019-04-25 | 2021-08-24 | 杭州多向流化学科技有限公司 | 用于制备对苯二甲酸的富水溶剂分级利用减排系统 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2653165A (en) * | 1950-09-27 | 1953-09-22 | California Research Corp | Oxidation process |
DE1071688B (de) * | 1958-06-14 | 1959-12-24 | Basf Ag | Verfahren zur Verbesserung der Oxydationsgeschwindigkeit der bei Luftoxydation von xylol oder von gemischen aus xylol und p-toluylsaeuremethylestern anfallenden gemische |
DE2916197C2 (de) * | 1979-04-21 | 1982-01-28 | Dynamit Nobel Ag, 5210 Troisdorf | Verfahren zur Herstellung von Terephthalsäure aus Dimethyltherephthalat als Zwischenprodukt |
-
1984
- 1984-03-03 DE DE3407912A patent/DE3407912C1/de not_active Expired
- 1984-12-27 IN IN1039/MAS/84A patent/IN163350B/en unknown
-
1985
- 1985-02-07 EP EP85101271A patent/EP0157122B1/de not_active Expired
- 1985-02-07 DE DE8585101271T patent/DE3560053D1/de not_active Expired
- 1985-02-25 SU SU853857493A patent/SU1581218A3/ru active
- 1985-02-25 DD DD85273522A patent/DD232912A5/de unknown
- 1985-02-27 TR TR8624A patent/TR22497A/xx unknown
- 1985-02-27 RO RO117779A patent/RO91879B/ro unknown
- 1985-02-28 BG BG069044A patent/BG45697A3/xx unknown
- 1985-02-28 MX MX204465A patent/MX162239A/es unknown
- 1985-02-28 KR KR1019850001275A patent/KR920003120B1/ko not_active Expired
- 1985-02-28 YU YU314/85A patent/YU44722B/xx unknown
- 1985-03-01 BR BR8500935A patent/BR8500935A/pt not_active IP Right Cessation
- 1985-03-01 PT PT80041A patent/PT80041B/pt not_active IP Right Cessation
- 1985-03-01 ZA ZA851579A patent/ZA851579B/xx unknown
- 1985-03-01 ES ES540832A patent/ES8602590A1/es not_active Expired
- 1985-03-01 PL PL1985252195A patent/PL144915B1/pl unknown
- 1985-03-02 EG EG12585A patent/EG17052A/xx active
- 1985-03-04 JP JP60041377A patent/JPH0688937B2/ja not_active Expired - Fee Related
- 1985-03-04 CS CS851508A patent/CS251095B2/cs unknown
- 1985-03-04 US US06/707,579 patent/US4642377A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPS60202842A (ja) | 1985-10-14 |
PT80041B (pt) | 1987-06-17 |
EG17052A (en) | 1994-07-30 |
ES540832A0 (es) | 1985-12-01 |
IN163350B (ko) | 1988-09-10 |
BG45697A3 (en) | 1989-07-14 |
BR8500935A (pt) | 1985-10-22 |
TR22497A (tr) | 1987-09-11 |
YU31485A (en) | 1987-10-31 |
PL252195A1 (en) | 1985-09-24 |
MX162239A (es) | 1991-04-12 |
US4642377A (en) | 1987-02-10 |
DE3407912C1 (de) | 1985-05-09 |
PL144915B1 (en) | 1988-07-30 |
RO91879B (ro) | 1987-07-03 |
SU1581218A3 (ru) | 1990-07-23 |
DD232912A5 (de) | 1986-02-12 |
ES8602590A1 (es) | 1985-12-01 |
RO91879A (ro) | 1987-06-30 |
CS251095B2 (en) | 1987-06-11 |
DE3560053D1 (en) | 1987-02-19 |
EP0157122A1 (de) | 1985-10-09 |
JPH0688937B2 (ja) | 1994-11-09 |
PT80041A (de) | 1985-04-01 |
ZA851579B (en) | 1985-10-30 |
YU44722B (en) | 1990-12-31 |
EP0157122B1 (de) | 1987-01-14 |
KR850007056A (ko) | 1985-10-30 |
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