BE505594A - - Google Patents
Info
- Publication number
- BE505594A BE505594A BE505594DA BE505594A BE 505594 A BE505594 A BE 505594A BE 505594D A BE505594D A BE 505594DA BE 505594 A BE505594 A BE 505594A
- Authority
- BE
- Belgium
- Prior art keywords
- alkaline solution
- water
- products
- adds
- reduction
- Prior art date
Links
- RAHZWNYVWXNFOC-UHFFFAOYSA-N sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000000047 product Substances 0.000 claims description 10
- 239000006227 byproduct Substances 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 7
- 239000012043 crude product Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000002904 solvent Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 239000003638 reducing agent Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 239000003463 adsorbent Substances 0.000 claims 1
- 238000002386 leaching Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 description 13
- 150000002828 nitro derivatives Chemical class 0.000 description 10
- WPYMKLBDIGXBTP-UHFFFAOYSA-N Benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 8
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 6
- 239000005711 Benzoic acid Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 235000010233 benzoic acid Nutrition 0.000 description 4
- 239000003929 acidic solution Substances 0.000 description 3
- BDAGIHXWWSANSR-UHFFFAOYSA-N formic acid Chemical compound OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 235000010269 sulphur dioxide Nutrition 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- AGVJBLHVMNHENQ-UHFFFAOYSA-N Calcium sulfide Chemical compound [S-2].[Ca+2] AGVJBLHVMNHENQ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229940055700 calcium sulfide Drugs 0.000 description 1
- 230000003197 catalytic Effects 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001264 neutralization Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 229940001607 sodium bisulfite Drugs 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE505594A true BE505594A (cs) |
Family
ID=146088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE505594D BE505594A (cs) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE505594A (cs) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE966323C (de) * | 1953-12-24 | 1957-07-25 | Hoechst Ag | Verfahren zur Reinigung von Terephthalsaeure |
| DE1017611B (de) * | 1953-12-31 | 1957-10-17 | Basf Ag | Verfahren zur Abtrennung von Begleitstoffen aus festen, kristallinen Stoffen oder Stoffgemischen |
-
0
- BE BE505594D patent/BE505594A/fr unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE966323C (de) * | 1953-12-24 | 1957-07-25 | Hoechst Ag | Verfahren zur Reinigung von Terephthalsaeure |
| DE1017611B (de) * | 1953-12-31 | 1957-10-17 | Basf Ag | Verfahren zur Abtrennung von Begleitstoffen aus festen, kristallinen Stoffen oder Stoffgemischen |
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