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    • 2. 发明授权
    • Process for producing tartaric acid from a raw material containing potassium hydrogentartrate
    • 从含有酒石酸钾的原料中生产酒石酸的方法
    • US06534678B1
    • 2003-03-18
    • US09303975
    • 1999-05-03
    • Rudolf BönschDieter SteinKlaus Erb
    • Rudolf BönschDieter SteinKlaus Erb
    • C07C5142
    • C07C51/412C07C51/02C07C51/487C07C59/255
    • Process for producing tartaric acid from a raw material whose dry matter comprises at least 5 wt% potassium hydrogentartrate wherein the raw material containing potassium hydrogen tartrate (KHT) is mixed with aqueous potassium hydroxide solution in a first reaction stage, where KHT is virtually completely reacted to form dipotassium tartrate (DKT), the aqueous solution containing DKT is then mixed with added acid in a precipitation stage at a pH value of 2.0 to 5.0, to produce a suspension containing crystallized KHT; crystallized KHT is then separated from the suspension, washed with water, and there is produced a solution at least 80 wt-% saturated with KHT and then the potassium is removed, to obtain an aqueous tartaric acid product solution, from which water is then at least partly removed.
    • 从干物质包含至少5重量%的氢化酒石酸钾的原料生产酒石酸的方法,其中在第一反应阶段将含有酒石酸氢钾的原料(KHT)与氢氧化钾水溶液混合,其中KHT实际上完全反应 形成酒石酸二钾(DKT),然后在pH值为2.0〜5.0的沉淀阶段将含有DKT的水溶液与添加的酸混合,得到含有结晶KHT的悬浮液; 然后将结晶的KHT从悬浮液中分离,用​​水洗涤,并且产生用KHT饱和至少80wt%的溶液,然后除去钾,得到酒石酸水溶液,然后将水 最少部分删除。