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    • 4. 发明申请
    • OXIDATION PROCESS FOR PRODUCING POTASSIUM THIOSULFATE
    • 生产硫代硫酸钾的氧化方法
    • WO2017116775A1
    • 2017-07-06
    • PCT/US2016/067336
    • 2016-12-16
    • TESSENDERLO KERLEY, INC.
    • HOJJATIE, Michael MassoudLOCKHART, Constance Lynn FrankDIMITRIADIS, AlexandrosCLARKSON, Mark P.KOMINSKI, Harry CharlesVAN CAUWENBERGH, JeroenSHULT, Nicholas S.GOLDSMITH, Adam T.
    • C05C9/00
    • C01B17/64C05D1/00C05G3/0064
    • An efficient process for preparation of potassium thiosulfate (K 2 S 2 O 3 ) is described. Potassium hydroxide (KOH) and elemental sulfur (S) are converted to potassium polysulfide, which is subsequently oxidized. The process allows using specifically designed process conditions such as mole ratios of potassium hydroxide to sulfur, and temperature, to obtain an optimized formulation of desired polysulfide, and a specifically designed set of conditions such as temperature, pressure, rate and duration of the oxidant during the oxidation conditions, to obtain a relatively high concentration of soluble potassium thiosulfate product with high purity, with relatively low amounts of byproducts. The manufacturing process can either be a batch process or a continuous process utilizing Continuous Stirred Tank Reactors (CSTR). The CSTR process is dependent on several design parameters, including pressure, and temperature optimization to avoid product instability. The resulting potassium thiosulfate is a beneficial fertilizer with high potassium content as a 50% liquid source of potassium.
    • 描述了制备硫代硫酸钾(K 2 S 2 O 3)的有效方法。 氢氧化钾(KOH)和元素硫(S)转化为多硫化钾,随后将其氧化。 该方法允许使用专门设计的工艺条件,例如氢氧化钾与硫的摩尔比和温度,以获得所需多硫化物的优化配方,以及特定设计的一组条件,例如氧化剂的温度,压力,速率和持续时间 氧化条件,以获得高纯度的相对高浓度的可溶性硫代硫酸钾产品,副产物量相对较低。 制造过程既可以是间歇过程,也可以是连续搅拌罐式反应器(CSTR)的连续过程。 CSTR过程依赖于几个设计参数,包括压力和温度优化以避免产品不稳定。 所得到的硫代硫酸钾是一种钾含量高,钾含量为50%的有益肥料。