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    • 9. 发明专利
    • Process for producing oxalic acid
    • 生产含氧酸的方法
    • JP2012229174A
    • 2012-11-22
    • JP2011097810
    • 2011-04-26
    • Mitsui Eng & Shipbuild Co Ltd三井造船株式会社
    • TANIHATA KAZUKIMATSUMOTO YASUOMURATA TOSHIAKITAMAGAWA JUNNOSUKE
    • C07C51/00B01J35/02C01B3/04C07C55/06
    • Y02E60/364
    • PROBLEM TO BE SOLVED: To provide a process for producing oxalic acid capable of producing oxalic acid in a high yield and in a large quantity thereby achieving significant reduction in cost while being excellent in process stability, reliability, initial cost, running cost, etc., by simplified steps and production facilities.SOLUTION: In the production process for oxalic acid, carbon dioxide (CO) dissolved in an aqueous solution is reduced by nascent hydrogen (H+e) to produce oxalic acid (HOOC-COOH). That is, the electron (e) and the proton (H) of the nascent hydrogen are reductively added to cationized carbon atom (C) and anionized oxygen atom (O) produced by polarization of one carbonyl group (C=O) of the carbon dioxide, thereby attaining single bonds between carbon atoms of two moles of carbon dioxide, so that one mole of oxalic acid is synthesized. The carbon dioxide is charged continuously in the aqueous solution so as to be dissolved in a saturated state.
    • 待解决的问题:提供一种以高产率和大量生产草酸的草酸生产方法,从而实现成本的显着降低,同时具有优异的工艺稳定性,可靠性,初始成本,运行成本 等等,通过简化的步骤和生产设施。 解决方案:在草酸生产过程中,溶解在水溶液中的二氧化碳(CO 2 )由新生氢降低(H + + e - )以产生草酸(HOOC-COOH)。 也就是说,新生氢气的电子(e - )和质子(H + )被还原加到阳离子化碳 原子(C + )和阴离子化氧原子(O - 二氧化碳,从而获得2摩尔二氧化碳的碳原子之间的单键,从而合成1摩尔草酸。 将二氧化碳连续加入到水溶液中,使其溶解在饱和状态。 版权所有(C)2013,JPO&INPIT