ES2182553T3 - Metodo para la recuperacion del acetato de metilo y el acido acetico residuales en la produccion de acido tereftalico puro. - Google Patents
Metodo para la recuperacion del acetato de metilo y el acido acetico residuales en la produccion de acido tereftalico puro.Info
- Publication number
- ES2182553T3 ES2182553T3 ES99937312T ES99937312T ES2182553T3 ES 2182553 T3 ES2182553 T3 ES 2182553T3 ES 99937312 T ES99937312 T ES 99937312T ES 99937312 T ES99937312 T ES 99937312T ES 2182553 T3 ES2182553 T3 ES 2182553T3
- Authority
- ES
- Spain
- Prior art keywords
- acid
- methyl acetate
- recovery
- pure
- production
- 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 - Lifetime
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
- 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
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Luminescent Compositions (AREA)
Abstract
Un procedimiento para la recuperación de acetato de metilo y de ácido acético residual en un proceso en dos etapas para la producción de ácido tereftálico puro de acuerdo a una primera etapa de oxidación y una segunda etapa de purificación, que comprende: (a) la reacción de paraxileno con aire en presencia de ácido acético y de un catalizador a una presión y una temperatura elevadas para producir (1) un ácido tereftálico impuro que incluye el ácido acético residual y (2) una corriente gaseosa de reacción que contiene agua, ácido acético y acetato de metilo; (b) enfriamiento de la corriente gaseosa de reacción para formar un primer condensado y la deshidratación azeotrópica del primer condensado en una torre azeotrópica en presencia de un agente de entrenamiento orgánico para producir un residuo que contiene ácido acético y un producto de cabeza y el enfriamiento del producto de cabeza para formar un segundo condensado que contiene agua, acetato de metilo y el agente de entrenamiento orgánico; (c) la purificación del ácido tereftálico bruto por disolución en agua a una presión y una temperatura elevadas para formar una solución acuosa y la puesta en contacto de la solución acuosa con hidrógeno en presencia de un catalizador; (d) el ajuste de la presión y de la temperatura de la solución acuosa hidrogenada, a consecuencia de lo cual los cristales de ácido tereftálico puro precipitan y el ácido acético residual y los componentes orgánicos permanecen en solución para formar unas aguas madres de la instalación puras; donde el método comprende: (e) la introducción simultanéa del segundo condensado y de las aguas madres de la instalación puras en un decantador para formar una fase acuosa y una fase orgánica a través de las cuales se reparten el ácido acético residual, los componentes orgánicos y el acetato de metilo; y (f) el retorno de la fase orgánica a la torre azeotrópica para recuperar el ácido acético residual y la destilación de la fase acuosa para recuperar acetato de metilo.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13229798A | 1998-08-11 | 1998-08-11 | |
| US09/257,275 US6150553A (en) | 1998-08-11 | 1999-02-24 | Method for recovering methyl acetate and residual acetic acid in the production acid of pure terephthalic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2182553T3 true ES2182553T3 (es) | 2003-03-01 |
Family
ID=26830244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES99937312T Expired - Lifetime ES2182553T3 (es) | 1998-08-11 | 1999-07-26 | Metodo para la recuperacion del acetato de metilo y el acido acetico residuales en la produccion de acido tereftalico puro. |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP1104396B1 (es) |
| JP (1) | JP4246393B2 (es) |
| CN (1) | CN1135215C (es) |
| AT (1) | ATE225763T1 (es) |
| BR (1) | BR9914302A (es) |
| CA (1) | CA2337502C (es) |
| DE (1) | DE69903450T2 (es) |
| DZ (1) | DZ2868A1 (es) |
| EG (1) | EG21657A (es) |
| ES (1) | ES2182553T3 (es) |
| ID (1) | ID27786A (es) |
| TR (1) | TR200100436T2 (es) |
| TW (1) | TW483886B (es) |
| WO (1) | WO2000009468A1 (es) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1226267C (zh) * | 2001-02-27 | 2005-11-09 | 三菱化学株式会社 | 共沸蒸馏方法 |
| ITMI20021423A1 (it) * | 2002-06-27 | 2003-12-29 | Eurotecnica Dev & Licensing S | Processo per la separazione dell'acqua prodotta nella ossidazione catalitica di idrocarburi aromatici ad acidi aromatici policarbossilici |
| CN1300088C (zh) * | 2005-03-25 | 2007-02-14 | 扬子石油化工股份有限公司 | 一种回收芳香族羧酸生产过程中原料、溶剂和副产物的方法 |
| CN100519503C (zh) * | 2005-08-31 | 2009-07-29 | 株式会社日立工业设备技术 | 在芳香族羧酸的制备工序中回收醋酸的方法 |
| US8382961B2 (en) * | 2010-06-07 | 2013-02-26 | Amt International, Inc. | System and method for reduction of water consumption in purified terephthalic acid production |
| US20140121406A1 (en) * | 2012-10-31 | 2014-05-01 | Invista North America S.A.R.L. | Pure plant mother liquor solvent extraction system and method |
| GB201417735D0 (en) * | 2014-10-07 | 2014-11-19 | Invista Tech Sarl | Production of an aromatic dicarboxylic acid |
| CN105463540B (zh) * | 2015-11-26 | 2017-12-15 | 湖南永盛新材料股份有限公司 | 一种用于电池壳体的镀覆镍钴/镍/镍磷多层膜不锈钢带及其制备方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1075317B (it) * | 1977-04-13 | 1985-04-22 | Montedison Spa | Metodo per l'anidrificazione del solvente e per il ricupero del sottoprodotto acetato di metile in un processo di sintesi dell'acido tereftalico |
| US4172209A (en) * | 1978-08-23 | 1979-10-23 | Uop Inc. | Process for producing dicarboxylic acids by the oxidation of xylene |
| GB9104776D0 (en) * | 1991-03-07 | 1991-04-17 | Ici Plc | Process for the production of terephthalic acid |
| US5980696A (en) * | 1994-08-23 | 1999-11-09 | E. I. Du Pont De Nemours And Company | Dehydration of acetic acid by azeotropic distillation in the production of an aromatic acid |
-
1999
- 1999-07-06 TW TW088111466A patent/TW483886B/zh not_active IP Right Cessation
- 1999-07-26 WO PCT/US1999/016295 patent/WO2000009468A1/en active IP Right Grant
- 1999-07-26 CN CNB998095818A patent/CN1135215C/zh not_active Expired - Fee Related
- 1999-07-26 BR BR9914302-0A patent/BR9914302A/pt not_active Application Discontinuation
- 1999-07-26 EP EP99937312A patent/EP1104396B1/en not_active Expired - Lifetime
- 1999-07-26 DE DE69903450T patent/DE69903450T2/de not_active Expired - Lifetime
- 1999-07-26 CA CA002337502A patent/CA2337502C/en not_active Expired - Fee Related
- 1999-07-26 TR TR2001/00436T patent/TR200100436T2/xx unknown
- 1999-07-26 ES ES99937312T patent/ES2182553T3/es not_active Expired - Lifetime
- 1999-07-26 JP JP2000564923A patent/JP4246393B2/ja not_active Expired - Fee Related
- 1999-07-26 ID IDW20010312A patent/ID27786A/id unknown
- 1999-07-26 AT AT99937312T patent/ATE225763T1/de not_active IP Right Cessation
- 1999-08-10 EG EG99399A patent/EG21657A/xx active
- 1999-08-10 DZ DZ990168A patent/DZ2868A1/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| JP4246393B2 (ja) | 2009-04-02 |
| DZ2868A1 (fr) | 2004-09-05 |
| CA2337502A1 (en) | 2000-02-24 |
| ATE225763T1 (de) | 2002-10-15 |
| BR9914302A (pt) | 2001-06-26 |
| DE69903450D1 (de) | 2002-11-14 |
| CN1135215C (zh) | 2004-01-21 |
| EG21657A (en) | 2002-02-27 |
| EP1104396A1 (en) | 2001-06-06 |
| EP1104396B1 (en) | 2002-10-09 |
| ID27786A (id) | 2001-04-26 |
| TW483886B (en) | 2002-04-21 |
| JP2002522519A (ja) | 2002-07-23 |
| CN1312787A (zh) | 2001-09-12 |
| WO2000009468A1 (en) | 2000-02-24 |
| CA2337502C (en) | 2009-03-24 |
| DE69903450T2 (de) | 2003-06-18 |
| TR200100436T2 (tr) | 2001-06-21 |
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