MY118293A - Process for the production of high-purity isophthalic acid - Google Patents
Process for the production of high-purity isophthalic acidInfo
- Publication number
- MY118293A MY118293A MYPI97003015A MYPI9703015A MY118293A MY 118293 A MY118293 A MY 118293A MY PI97003015 A MYPI97003015 A MY PI97003015A MY PI9703015 A MYPI9703015 A MY PI9703015A MY 118293 A MY118293 A MY 118293A
- Authority
- MY
- Malaysia
- Prior art keywords
- mother liquor
- isophthalic acid
- water
- pia
- oxidation
- 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
-
- 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
- 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
- C07C63/24—1,3 - Benzenedicarboxylic acid
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)
Abstract
A PROCESS FOR THE PRODUCTION OF HIGH-PURITY ISOPHTHALIC ACID, WHICH ENABLES EASY TREATMENT OF THE PIA MOTHER LIQUOR, ENABLES THE RECOVERY OF THE USEFUL MATERIALS CONTAINED IN THE PIA MOTHER LIQUOR, DECREASES THE DISCHARGE AMOUNT OF WATER AND ENABLES THE RECYCLING OF WATER TO BE USED AS A SOLVENT, WITHOUT ADDITIONAL INVESTMENT AND EXPENSES, THE PROCESS COMPRISING THE STEPS OF A)SEPARATING A LIQUID-PHASE OXIDATION SOLUTION INTO AN OXIDATION MOTHER LIQUOR AND A CRUDE ISOPHTHALIC ACID BY CRYSTALLIZATION AND EVAPORATING THE OXIDATION MOTHER LIQUOR TO FORM ACETIC VAPOR OR A CONDENSATE THEREOF, B)DISSOLVING THE CRUDE ISOPHTHALIC ACID IN WATER, THEN CATALYTICALLY HYDROGENATING, CATALYTICALLY TREATING OR OXIDIZING THE RESULTANT SOLUTION OF ISOPHTHALIC ACID IN WATER TO FORM A PURIFIED SOLUTION, COOLING THE PURIFIED SOLUTION TO CRYSTALLIZE ISOPHTHALIC ACID AND SEPARATING THE PURIFIED SOLUTION INTO A PIA MOTHER LIQUOR AND A CRYSTAL OF THE ISOPHTHALIC ACID, AND C)FEEDING THE ACETIC ACID VAPOR OR CONDENSATE PREPARED BY THE EVAPORATION OF THE OXIDATION MOTHER LIQUOR IN STEP A) TO A MIDDLE STAGE OF A DISTILLATION COLUMN, FEEDING THE MOTHER LIQUOR SEPARATED FROM THE PURIFIED SOLUTION IN THE STEP B) TO A TOP PORTION OF THE DISTILLATION COLUMN TO CARRY OUT DISTILLATION, AND DISCHARGING CONCENTRATED ACETIC ACID CONTAINING AROMATIC CARBOXYLIC ACIDS FROM A BOTTOM PORTION OF THE DISTILLATION COLUMN.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18332896A JP3757995B2 (en) | 1996-07-12 | 1996-07-12 | Method for producing high purity isophthalic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MY118293A true MY118293A (en) | 2004-09-30 |
Family
ID=45808631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MYPI97003015A MY118293A (en) | 1996-07-12 | 1997-07-03 | Process for the production of high-purity isophthalic acid |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR100527416B1 (en) |
| MY (1) | MY118293A (en) |
| TW (1) | TW375607B (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5612007A (en) * | 1994-10-14 | 1997-03-18 | Amoco Corporation | Apparatus for preparing aromatic carboxylic acids with efficient energy recovery |
-
1997
- 1997-07-03 MY MYPI97003015A patent/MY118293A/en unknown
- 1997-07-04 TW TW086109426A patent/TW375607B/en not_active IP Right Cessation
- 1997-07-11 KR KR1019970032347A patent/KR100527416B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR980009221A (en) | 1998-04-30 |
| TW375607B (en) | 1999-12-01 |
| KR100527416B1 (en) | 2006-03-22 |
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