一种催化提高湿法磷酸汽提脱氟效率的方法

本发明公开了一种催化提高湿法磷酸汽提脱氟效率的方法，涉及湿法磷酸脱氟工艺技术领域。对原料磷酸进行脱砷、脱重金属净化工序，得到澄清、杂质含量低的净化浓磷酸；在净化浓磷酸中添加了脱氟催化剂后，再与脱氟剂混合加热后进行汽提脱氟，可以有效降低脱氟阻力，提高脱氟效率，降低脱氟过程中的脱氟剂、蒸汽和用电消耗，降低脱氟成本；脱氟工序采用汽提脱氟工艺，采取间接蒸汽加热方式；生产脱氟磷酸的效率高，产量高，消耗低，磷酸品质较好，杂质含量低，其磷氟比(P2O5/F)可达285以上，能直接用于生产饲料级磷酸钙盐。 The invention discloses a method for catalytically i...

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Bibliographic Details
Format Patent
LanguageChinese
Published 19.03.2021
Subjects
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Summary:本发明公开了一种催化提高湿法磷酸汽提脱氟效率的方法，涉及湿法磷酸脱氟工艺技术领域。对原料磷酸进行脱砷、脱重金属净化工序，得到澄清、杂质含量低的净化浓磷酸；在净化浓磷酸中添加了脱氟催化剂后，再与脱氟剂混合加热后进行汽提脱氟，可以有效降低脱氟阻力，提高脱氟效率，降低脱氟过程中的脱氟剂、蒸汽和用电消耗，降低脱氟成本；脱氟工序采用汽提脱氟工艺，采取间接蒸汽加热方式；生产脱氟磷酸的效率高，产量高，消耗低，磷酸品质较好，杂质含量低，其磷氟比(P2O5/F)可达285以上，能直接用于生产饲料级磷酸钙盐。 The invention discloses a method for catalytically improving wet-process phosphoric acid steam stripping defluorination efficiency, and relates to the technical field of wet-process phosphoric acid defluorination processes. By carrying out arsenic removal and heavy metal removal purification procedures on raw material phosphoric acid, clear purified concentrated phosphoric acid with low impurity content can be obtained; after a defluorination catalyst is added into the purified concentrated phosphoric acid, the defluorination catalyst and a defluorination agent are mixed and heated, and then steam stripping defluorination is performed, so that the defluorination resistance can be effectively reduced, the defluorination efficiency is improved, the consumption of the
Bibliography:Application Number: CN201911218578