A production device and production method of lithium difluorophosphate
A technology of lithium difluorophosphate and production method, which is applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of polluting waste liquid, low production efficiency of lithium difluorophosphate, difficult to handle, etc. The effect of reaction efficiency
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Embodiment 1
[0069] A production method of lithium difluorophosphate, comprising the following steps:
[0070] (1) Fill the reaction tower 10 with an inert gas, replace the air in the reaction tower 10, then heat the reaction tower to keep its temperature at a reaction temperature of 60°C;
[0071] (2) Close the split valve plate 20, and the reaction tower 10 is divided into an upper reaction tower 11 and a lower reaction tower 12; the powdered lithium hexafluorophosphate and the organic matter containing -Si-O-group in the spray form are separated from the upper reaction tower The powdery lithium hexafluorophosphate feed port 113 and the mist-like -Si-O-group-containing organic matter feed port 114 are sprayed into the reaction tower 10 in a hedge type. After the reaction is complete, open the split valve plate 20, and the reaction mixture Put it into the lower reaction tower 12; the molar ratio of the powdery lithium hexafluorophosphate and the atomized tetramethoxysilane is 1:1;
[007...
Embodiment 2
[0075] In this example, lithium difluorophosphate is produced according to the method in Example 1. The difference is that the molar ratio of the powdery lithium hexafluorophosphate to the mist-like tetramethoxysilane is 1:0.8, and the rest remain unchanged. Lithium difluorophosphate is prepared. .
[0076] The collected lithium difluorophosphate product was analyzed and weighed, and the amount of raw materials introduced was calculated to obtain the yield and purity of lithium difluorophosphate, which were recorded in Table 1.
Embodiment 3
[0078] In this example, lithium difluorophosphate is produced according to the method in Example 1. The difference is that the molar ratio of the powdery lithium hexafluorophosphate to the mist tetramethoxysilane is 1:0.5, and the rest remain unchanged, and lithium difluorophosphate is prepared. .
[0079] The collected lithium difluorophosphate product was analyzed and weighed, and the amount of raw materials introduced was calculated to obtain the yield and purity of lithium difluorophosphate, which were recorded in Table 1.
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