WO2013132507A1 - An integrated process for the recovery of metal catalysts during the manufacture of purified terephthalic acid - Google Patents
An integrated process for the recovery of metal catalysts during the manufacture of purified terephthalic acid Download PDFInfo
- Publication number
- WO2013132507A1 WO2013132507A1 PCT/IN2012/000291 IN2012000291W WO2013132507A1 WO 2013132507 A1 WO2013132507 A1 WO 2013132507A1 IN 2012000291 W IN2012000291 W IN 2012000291W WO 2013132507 A1 WO2013132507 A1 WO 2013132507A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- acid
- alcohol
- acetate
- effluent stream
- Prior art date
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
- C07C51/09—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
- 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
- C07C51/41—Preparation of salts of carboxylic acids
- C07C51/412—Preparation of salts of carboxylic acids by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part
-
- 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
-
- 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
- Y02P20/10—Process efficiency
Definitions
- a process for catalytically hydrolyzing side product methyl acetate in production of pure terephthalic acid is disclosed in CN101481293A.
- the catalyst used for the hydrolysis of methyl acetate in accordance with the disclosure made in CN101481293A is heterogeneous catalyst. Though the process is integrated CN101481293A as such does not deal with problem associated with the recovery of metal catalysts used in the synthesis of the PTA.
- the carboxylic acid is at least one selected from the group consisting of acetic acid, propanoic acid, and butanoic acid.
- the alcohol is at least one selected from the group consisting of methyl alcohol, ethyl alcohol, iso-propyl alcohol, n-butyl alcohol, amyl alcohol and hexyl alcohol.
- the ester includes but is not limited to methyl acetate, ethyl acetate, iso-propyl acetate, n-butyl acetate, amyl acetate and hexyl acetate.
- the ester is methyl acetate and the effluent stream contains acetic acid, methanol, oxalic acid and water.
- hydrolysis reaction of methyl acetate, in the presence of an acid catalyst, to produce acetic acid is described herein below.
- Stream 27 containing 90% acetic acid and 10% oxalic acid exiting hydrolysis section is used for catalyst recovery.
- the stream 27 of Fig 1 is mixed with mother liquor having inorganic metal catalyst in mixing zone.
- Oxalic acid in the stream reacts with the acetates of cobalt and manganese and form respective oxalates which are separated and recovered by centrifugation which may also be recycled back to the oxidation reactor.
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)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112014021765A BR112014021765A2 (en) | 2012-03-05 | 2012-04-20 | PROCESS FOR THE RECOVERY OF PTA OXIDATION CATALYST DURING THE MANUFACTURING OF PTA |
CN201280071156.8A CN104144906B (en) | 2012-03-05 | 2012-04-20 | The integrated process of metallic catalyst is reclaimed during producing high purity terephthalic acid |
HK15103834.7A HK1203479A1 (en) | 2012-03-05 | 2015-04-21 | An integrated process for the recovery of metal catalysts during the manufacture of purified terephthalic acid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN577MU2012 | 2012-03-05 | ||
IN577/MUM/2012 | 2012-03-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013132507A1 true WO2013132507A1 (en) | 2013-09-12 |
Family
ID=46888517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IN2012/000291 WO2013132507A1 (en) | 2012-03-05 | 2012-04-20 | An integrated process for the recovery of metal catalysts during the manufacture of purified terephthalic acid |
Country Status (5)
Country | Link |
---|---|
CN (1) | CN104144906B (en) |
BR (1) | BR112014021765A2 (en) |
HK (1) | HK1203479A1 (en) |
PT (1) | PT2013132507W (en) |
WO (1) | WO2013132507A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB687902A (en) | 1950-04-27 | 1953-02-25 | Melle Usines Sa | Improvements in or relating to processes for the hydrolysis of methyl acetate and the treatment of aqueous mixtures of methyl acetate, methyl alcohol and acetic acid so obtained |
US4490297A (en) * | 1981-12-24 | 1984-12-25 | Dynamit Nobel Ag | Method for the recovery and reuse of cobalt and/or manganese components of catalysts |
US4587355A (en) * | 1984-08-22 | 1986-05-06 | Amoco Corporation | Oxidation with a solid catalyst |
CN100418939C (en) | 2006-09-15 | 2008-09-17 | 福州大学 | Hydrolysis process of methyl acetate as by-product of producing refined terephthalic acid and apparatus thereof |
KR100888065B1 (en) | 2007-11-15 | 2009-03-11 | 아신기술 주식회사 | Improvedprocess for methyl acetate hydrolysis |
CN101481293A (en) | 2009-02-20 | 2009-07-15 | 南京工业大学 | Catalytic hydrolysis process for by-product methyl acetate of purified terephthalic acid production |
TWI322801B (en) | 2006-12-05 | 2010-04-01 | Univ Nat Taiwan | Separation system and method for hydrolysis of methyl acetate |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101531588B (en) * | 2008-03-13 | 2016-02-24 | 周向进 | The manufacture method of a kind of new pure terephthalic acid |
-
2012
- 2012-04-20 CN CN201280071156.8A patent/CN104144906B/en not_active Expired - Fee Related
- 2012-04-20 BR BR112014021765A patent/BR112014021765A2/en not_active IP Right Cessation
- 2012-04-20 WO PCT/IN2012/000291 patent/WO2013132507A1/en active Application Filing
- 2012-04-20 PT PT2012000291A patent/PT2013132507W/en unknown
-
2015
- 2015-04-21 HK HK15103834.7A patent/HK1203479A1/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB687902A (en) | 1950-04-27 | 1953-02-25 | Melle Usines Sa | Improvements in or relating to processes for the hydrolysis of methyl acetate and the treatment of aqueous mixtures of methyl acetate, methyl alcohol and acetic acid so obtained |
US4490297A (en) * | 1981-12-24 | 1984-12-25 | Dynamit Nobel Ag | Method for the recovery and reuse of cobalt and/or manganese components of catalysts |
US4587355A (en) * | 1984-08-22 | 1986-05-06 | Amoco Corporation | Oxidation with a solid catalyst |
CN100418939C (en) | 2006-09-15 | 2008-09-17 | 福州大学 | Hydrolysis process of methyl acetate as by-product of producing refined terephthalic acid and apparatus thereof |
TWI322801B (en) | 2006-12-05 | 2010-04-01 | Univ Nat Taiwan | Separation system and method for hydrolysis of methyl acetate |
KR100888065B1 (en) | 2007-11-15 | 2009-03-11 | 아신기술 주식회사 | Improvedprocess for methyl acetate hydrolysis |
CN101481293A (en) | 2009-02-20 | 2009-07-15 | 南京工业大学 | Catalytic hydrolysis process for by-product methyl acetate of purified terephthalic acid production |
Also Published As
Publication number | Publication date |
---|---|
CN104144906B (en) | 2016-08-17 |
PT2013132507W (en) | 2015-05-20 |
HK1203479A1 (en) | 2015-10-30 |
BR112014021765A2 (en) | 2017-08-22 |
CN104144906A (en) | 2014-11-12 |
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