PL33351B3 - Method for producing oxalic acid - Google Patents
Method for producing oxalic acid Download PDFInfo
- Publication number
- PL33351B3 PL33351B3 PL33351A PL3335138A PL33351B3 PL 33351 B3 PL33351 B3 PL 33351B3 PL 33351 A PL33351 A PL 33351A PL 3335138 A PL3335138 A PL 3335138A PL 33351 B3 PL33351 B3 PL 33351B3
- Authority
- PL
- Poland
- Prior art keywords
- oxalic acid
- nitric acid
- producing oxalic
- moscice
- reaction
- Prior art date
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- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 title claims description 15
- 235000006408 oxalic acid Nutrition 0.000 title claims description 5
- 238000004519 manufacturing process Methods 0.000 title claims 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 7
- 229910017604 nitric acid Inorganic materials 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000012295 chemical reaction liquid Substances 0.000 claims description 3
- 150000001720 carbohydrates Chemical class 0.000 claims description 2
- 235000014633 carbohydrates Nutrition 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
Description
Najdluzszy czas trwania patentu do 8 listopada 1955 r.W patencie nr 29365 podano sposób wy¬ twarzania kwasu szczawiowego przez utle¬ nianie weglowodanów kwasem azotowym, pozwalajacy na otrzymanie duzej, wydaj¬ nosci kwasu szczawiowego i polegajacy na usuwaniu wywiazujacych sie tlenków azo¬ tu ze srodowiska reakcyjnego. Obecnie wykryto, ze nie mniej waznym czynnikiem, wplywajacym na wydajnosc kwasu szcza¬ wiowego, jest utrzymanie odpowiedniego stezenia kwasu azotowego podczas reakcji.Stezenie kwasu azotowego w cieczy reak¬ cyjnej nie powinno mianowicie byc nizsze niz 25% HNOs.Utrzymywanie tej tak wysokiej zawar¬ tosci kwasu azotowego moze byc uskutecz¬ nione w sposób dowolny, najprosciej przez stale dodawanie stezonego kwasu azotowe¬ go czy to w sposób ciagly, czy tez w nie¬ wielkich lecz czestych porcjach zaleznie od kazdorazowego wyniku analizy cieczy reakcyjnej, PLThe longest term of the patent until November 8, 1955. Patent No. 29,365 describes a method of producing oxalic acid by oxidizing carbohydrates with nitric acid, which allows obtaining a high yield of oxalic acid and consists in removing the emerging nitrogen oxides from the reaction environment. . It has now been found that a no less important factor affecting the yield of oxalic acid is the maintenance of an appropriate concentration of nitric acid during the reaction. The concentration of nitric acid in the reaction liquid should not be lower than 25% HNOs. The amount of nitric acid can be effected in any way, most simply by the constant addition of concentrated nitric acid, either continuously or in small but frequent portions, depending on the results of the analysis of the reaction liquid, PL
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PL33351B3 true PL33351B3 (en) | 1947-10-31 |
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