发明授权
US3864393A Process for the production of oxalic acid 失效
草酸生产工艺

Process for the production of oxalic acid
摘要:
The nitrous oxides released when ethylene oxide is introduced at 30*-70*C. into aqueous nitric acid of 50-70 percent by weight of HNO3 is recirculated thereto and gaseous oxygen is introduced into the nitric acid. A post-oxidation holding of the oxidation mixture for 8-24 hours at 30*-70*C. increases the yield of oxalic acid.
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