JPS5576839A - Treatment of polycarboxylic acid solution containing mineral acid - Google Patents
Treatment of polycarboxylic acid solution containing mineral acidInfo
- Publication number
- JPS5576839A JPS5576839A JP14986178A JP14986178A JPS5576839A JP S5576839 A JPS5576839 A JP S5576839A JP 14986178 A JP14986178 A JP 14986178A JP 14986178 A JP14986178 A JP 14986178A JP S5576839 A JPS5576839 A JP S5576839A
- Authority
- JP
- Japan
- Prior art keywords
- solution
- acid
- packed bed
- mineral acid
- polycarboxylic acid
- 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.)
- Pending
Links
- 239000002253 acid Substances 0.000 title abstract 11
- 229910052500 inorganic mineral Inorganic materials 0.000 title abstract 6
- 239000011707 mineral Substances 0.000 title abstract 6
- 239000000243 solution Substances 0.000 abstract 7
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 239000003957 anion exchange resin Substances 0.000 abstract 2
- 230000008929 regeneration Effects 0.000 abstract 2
- 238000011069 regeneration method Methods 0.000 abstract 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 abstract 1
- 239000012670 alkaline solution Substances 0.000 abstract 1
- 150000001735 carboxylic acids Chemical class 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000000855 fermentation Methods 0.000 abstract 1
- 230000004151 fermentation Effects 0.000 abstract 1
- 239000003456 ion exchange resin Substances 0.000 abstract 1
- 229920003303 ion-exchange polymer Polymers 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain a polycarboxylic acid solution which does not contain a mineral acid substantially, by the removal of a mineral acid existing in a small amount in a polycarboxylic acid solution, using a packed bed of an OH-type weakly basic anion-exchange resin and repeating the passing of the solution through and the regeneration of the ion-exchange resin.
CONSTITUTION: For example, citric acid separated from a fermented solution obtained by citric acid fermentation contains inevitably a small amount of sulfuric acid. A polycarboxylic acid solution containing such mineral acid is supplied to a packed bed of an OH-type weakly basic anion-exchange resin. Initial portion of eluate (containing substantially no polycarboxylic acid) is discharged out of the system, and the subsequent portion (containing the desired compound and less than permissible amount of the mineral acid) is collected. When mineral acid content of the eluate goes up to over the permissible level, supply of the solution is stopped and the packed bed is regenerated. Processes described above are repeated. The regeneration of the packed bed is carried out by supplying an alkaline solution to the packed bed after the collection of carboxylic acid solution eluted with water.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14986178A JPS5576839A (en) | 1978-12-04 | 1978-12-04 | Treatment of polycarboxylic acid solution containing mineral acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14986178A JPS5576839A (en) | 1978-12-04 | 1978-12-04 | Treatment of polycarboxylic acid solution containing mineral acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5576839A true JPS5576839A (en) | 1980-06-10 |
Family
ID=15484247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14986178A Pending JPS5576839A (en) | 1978-12-04 | 1978-12-04 | Treatment of polycarboxylic acid solution containing mineral acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5576839A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63188632A (en) * | 1987-01-30 | 1988-08-04 | Shimadzu Corp | Organic acid purification method and apparatus |
| JPH01102033A (en) * | 1987-10-15 | 1989-04-19 | Sumitomo Chem Co Ltd | Removal of organic acid |
| JP2002105018A (en) * | 2000-09-22 | 2002-04-10 | Mitsubishi Gas Chem Co Inc | Method for producing aromatic carboxylic acid |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5011365A (en) * | 1973-05-30 | 1975-02-05 |
-
1978
- 1978-12-04 JP JP14986178A patent/JPS5576839A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5011365A (en) * | 1973-05-30 | 1975-02-05 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63188632A (en) * | 1987-01-30 | 1988-08-04 | Shimadzu Corp | Organic acid purification method and apparatus |
| JPH01102033A (en) * | 1987-10-15 | 1989-04-19 | Sumitomo Chem Co Ltd | Removal of organic acid |
| JP2002105018A (en) * | 2000-09-22 | 2002-04-10 | Mitsubishi Gas Chem Co Inc | Method for producing aromatic carboxylic acid |
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