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    • 51. 发明授权
    • Process for drying sodium carbonate peroxide
    • 干燥碳酸钠过氧化物的方法
    • US4020148A
    • 1977-04-26
    • US596200
    • 1975-07-15
    • Richard A. MohrSushil K. BhallaPeter H. Zeh
    • Richard A. MohrSushil K. BhallaPeter H. Zeh
    • C01B15/10
    • C01B15/103
    • Manufacturing dry, free-flowing crystalline sodium carbonate peroxide by passing a gas stream at a temperature between 70.degree. and 150.degree. C into a drying zone containing moist sodium carbonate peroxide while maintaining the exit gas stream temperature between 50.degree. and 130.degree. C until the sodium carbonate contains between 0.05% and 0.5% by weight moisture, immediately passing the dried material into a cooling zone where the sodium carbonate peroxide temperature is lowered to between 0.degree. and 40.degree. C, and removing a dry, free-flowing, crystalline sodium carbonate peroxide product containing between 0.001% and 0.20% by weight moisture.
    • 通过将70〜150℃的气流通入含有潮湿碳酸钠过氧化物的干燥区,制成干燥,自由流动的结晶碳酸钠过氧化物,同时保持出口气流温度在50〜130℃,直至 碳酸钠含有0.05%至0.5%重量的水分,立即将干燥的材料通入冷却区,其中碳酸钠过氧化物温度降低至0°至40℃,并除去干燥,自由流动的结晶钠 含有0.001重量%至0.20重量%水分的碳酸酯过氧化物产物。
    • 55. 发明专利
    • Manufacture of sodium percarbonate
    • 硫酸钙的制造
    • JPS5777008A
    • 1982-05-14
    • JP15100480
    • 1980-10-28
    • Mitsubishi Gas Chem Co Inc
    • SUGANO JIYUNICHIROUYUI TOMOYUKINAMIKAWA YOSHIJIFUJIMOTO TSUNEO
    • C09K15/32C01B15/10
    • C01B15/103
    • PURPOSE: To manufacture sodium percarbonate with superior shelf stability economically and efficiently by adding tetra(phosphonomethyl)diamino-alkanes to reactive mother liquior during the reaction of Na
      2 CO
      3 with H
      2 O
      2 .
      CONSTITUTION: When Na
      2 CO
      3 is reacted with H
      2 O
      2 to manufacture sodium percarbonate, to the reaction mother liquor is added a small amount of ≥1 kinds of N,N,N',N'-tetra(phosphomethyl)diaminoalkane represented by formulaI(where R is the group of formula II or III, and n is 0 or 1W4) as a stabilizer. Only a small amount of this stabilizer inhibits well the decomposition of H
      2 O
      2 due to metal originating in the starting material Na
      2 CO
      3 , so the crystallization yield on the basis of H
      2 O
      2 is increased, and sodium percarbonate with superior shelf stability can be manufactured.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:通过在Na 2 CO 3与H 2 O 2的反应期间向反应性母液中加入四(膦酰基甲基)二氨基烷烃,以经济有效地制造具有优异的储存稳定性的过碳酸钠。 构成:当Na 2 CO 3与H 2 O 2反应制造过碳酸钠时,向反应母液中加入少量的= 1种式I表示的N,N,N',N'-四(磷酸甲基)二氨基烷烃(其中R 是式II或III的基团,n是0或1-4)作为稳定剂。 只有少量的这种稳定剂能够很好地抑制源于起始原料Na 2 CO 3的金属的H 2 O 2分解,因此基于H 2 O 2的结晶产率增加,并且可以制造出具有优异的储存稳定性的过碳酸钠。