A continuous production system for lithium hexafluorophosphate
A technology of lithium hexafluorophosphate and production system, applied in the directions of lithium hexafluorophosphate, lithium compounds, electrochemical generators, etc., can solve the problems of difficult production technology, large amount of by-products, low purity, etc., so as to reduce the possibility of contact and reaction, Fast reaction speed, reducing the effect of free acid
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Embodiment 1
[0077] In a dissolution tank with a cooling jacket and stirring, pump HF, and add LiF through a solid feeding device while cooling. The speed of adding LiF should be controlled to control the temperature of HF at 0°C and the concentration of LiF at 5wt. %, at the same time the PCl 5 It is sent to the phosphorus pentafluoride generator 2 that stores HF to generate PF 5 gas. Under pressure, the HF solution dissolved in LiF and PF were pumped 5 The gas is delivered to microchannel reactor A3. Reactant PF in microchannel reactor A3 5The molar ratio to LiF is 2:1, the residence time of reactants is 30 seconds, and the reaction temperature is 15°C. The reactant enters the microchannel reactor A3 in a continuous state, and the output material is output in a continuous state, and enters the gas-liquid separator A4 for gas-liquid separation, and the separated liquid phase product, that is, the component containing lithium hexafluorophosphate, is transported to the synthesis liquid ...
Embodiment 2
[0080] In a dissolution tank with a cooling jacket and stirring, use a pump to transport HF, and add LiF through a solid feeding device while cooling. The speed of adding LiF should be controlled so that the temperature of HF is 0°C and the concentration of LiF is 4wt. %, at the same time the PCl 5 It is sent to the phosphorus pentafluoride generator 2 that stores HF to generate PF 5 gas. Under pressure, the HF solution dissolved in LiF and PF were pumped 5 The gas is delivered to microchannel reactor A3. Reactant PF in microchannel reactor A3 5 The molar ratio to LiF is 2:1, the residence time of reactants is 30 seconds, and the reaction temperature is 15°C. The reactant enters the microchannel reactor A3 in a continuous state, and the output material is output in a continuous state, and enters the gas-liquid separator A4 for gas-liquid separation, and the separated liquid phase product, that is, the component containing lithium hexafluorophosphate, is transported to the...
Embodiment 3
[0083] In a dissolution tank with a cooling jacket and stirring, use a pump to transport HF, and add LiF through a solid feeding device while cooling. The speed of adding LiF should be controlled so that the temperature of HF is 0°C and the concentration of LiF is 4wt. %, at the same time the PCl 5 It is sent to the phosphorus pentafluoride generator 2 that stores HF to generate PF 5 gas. Under pressure, the HF solution dissolved in LiF and PF were pumped 5 The gas is delivered to microchannel reactor A3. Reactant PF in microchannel reactor A3 5 The molar ratio to LiF is 2:1, the residence time of reactants is 30 seconds, and the reaction temperature is 15°C. The reactant enters the microchannel reactor A3 in a continuous state, and the output material is output in a continuous state, and enters the gas-liquid separator A4 for gas-liquid separation, and the separated liquid phase product, that is, the component containing lithium hexafluorophosphate, is transported to the...
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