BR0317930A - Process for the production of high purity terephthalic acid - Google Patents
Process for the production of high purity terephthalic acidInfo
- Publication number
- BR0317930A BR0317930A BR0317930-3A BR0317930A BR0317930A BR 0317930 A BR0317930 A BR 0317930A BR 0317930 A BR0317930 A BR 0317930A BR 0317930 A BR0317930 A BR 0317930A
- Authority
- BR
- Brazil
- Prior art keywords
- amount
- terephthalic acid
- high purity
- production
- 4cba
- 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
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
"PROCESSO PARA A PRODUçãO DE áCIDO TEREFTáLICO DE ALTA PUREZA". A vida de um catalisador de redução usado em uma etapa de redução em que se reduz 4CBA com hidrogênio em ácido p-tolúico é prolongada. o processo para produção de ácido tereftálico de alta pureza se caracteriza pelo fato de que, na etapa de redução, a razão da quantidade de hidrogênio alimentada ao reator de hidrogenação para a quantidade de 4CBA na solução alimentada ao reator, hidrogênio/4CBA, é de 2 a 10 (por moles) , e de que a razão da quantidade de ácido tereftálico bruto a ser tratada na etapa de redução para a quantidade de catalisador de redução presente no reator de hidrogenação, ¢quantidade de ácido tereftálico tratada (t/h) ! / ¢quantidade de catalisador de redução (t) ! , é de 400 a 5.000 (1/h)."PROCESS FOR THE PRODUCTION OF HIGH PURITY TERETAPHIC ACID". The life of a reduction catalyst used in a reduction step in which 4CBA with hydrogen in p-toluic acid is reduced is extended. The process for producing high purity terephthalic acid is characterized by the fact that, in the reduction step, the ratio of the amount of hydrogen fed to the hydrogenation reactor to the amount of 4CBA in the reactor-fed solution, hydrogen / 4CBA, is 2 to 10 (per mol), and the ratio of the amount of crude terephthalic acid to be treated in the reduction step to the amount of reduction catalyst present in the hydrogenation reactor, ¢ amount of treated terephthalic acid (t / h) ! / ¢ amount of reduction catalyst (t)! is from 400 to 5,000 (1 / hr).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003001060 | 2003-01-07 | ||
PCT/JP2003/016464 WO2004060847A1 (en) | 2003-01-07 | 2003-12-22 | Process for producing high-purity terephthalic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0317930A true BR0317930A (en) | 2005-11-29 |
Family
ID=32708796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0317930-3A BR0317930A (en) | 2003-01-07 | 2003-12-22 | Process for the production of high purity terephthalic acid |
Country Status (4)
Country | Link |
---|---|
CN (2) | CN1982283A (en) |
AU (1) | AU2003289482A1 (en) |
BR (1) | BR0317930A (en) |
WO (1) | WO2004060847A1 (en) |
Families Citing this family (2)
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 |
CN101704742B (en) * | 2009-11-20 | 2013-06-26 | 华东理工大学 | Reactor for producing aromatic carboxylic acid |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9102393D0 (en) * | 1991-02-05 | 1991-03-20 | Ici Plc | Production of terephthalic acid |
-
2003
- 2003-12-22 AU AU2003289482A patent/AU2003289482A1/en not_active Abandoned
- 2003-12-22 WO PCT/JP2003/016464 patent/WO2004060847A1/en active Application Filing
- 2003-12-22 BR BR0317930-3A patent/BR0317930A/en not_active Application Discontinuation
- 2003-12-22 CN CNA2006101699771A patent/CN1982283A/en active Pending
- 2003-12-22 CN CNB2003801003948A patent/CN1323999C/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CN1982283A (en) | 2007-06-20 |
AU2003289482A1 (en) | 2004-07-29 |
CN1692093A (en) | 2005-11-02 |
CN1323999C (en) | 2007-07-04 |
WO2004060847A1 (en) | 2004-07-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B07A | Application suspended after technical examination (opinion) [chapter 7.1 patent gazette] | ||
B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: INDEFIRO O PEDIDO DE ACORDO COM O(S) ARTIGO(S) 8O E 13 DA LPI. |
|
B09B | Patent application refused [chapter 9.2 patent gazette] |
Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL. |