A self-rising film thin film evaporator and a method for preparing high-concentration electronic-grade manganese nitrate
The technology of an evaporator and a stage evaporator is applied in the field of self-rising film thin film evaporator to prepare high-concentration electronic grade manganese nitrate, which can solve the problems such as failure to meet the use requirements and inability to produce, avoid excessive heating temperature, and easily The effect of cleaning and low energy consumption
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Embodiment 1
[0047] Embodiment 1 Self-rising film thin film evaporator
[0048] Provide a self-rising film thin film evaporator, such as figure 2 As shown, it includes an evaporation tank body 3 , a heating jacket 2 and a spiral diffusion shaft 6 . The heating jacket 2 is arranged outside the wall of the evaporating tank body 3 to heat the tank body. The lower end of the evaporating tank body 3 is provided with a feed port 31, the top of the evaporating tank body 3 is provided with a discharge port 15, and the upper part of the heating jacket 2 is provided with a steam inlet. The gas port 4 and the lower part of the heating jacket 2 are provided with a steam gas outlet 32, and the spiral diffuser shaft 6 is spirally rising and arranged along the central axis of the tank body. The spiral diffuser shaft 6 is composed of a shaft core 62 that runs through the entire height of the tank body, and a spiral blade 61 that is evenly arranged and extended along the circumference of the shaft core 6...
Embodiment 2
[0050] Embodiment 2 prepares the equipment of high-concentration electronic grade manganese nitrate
[0051] Provide a self-rising film thin film evaporation device, such as Figure 1~4 As shown, it includes a primary evaporator, a secondary evaporator and a tertiary evaporator. The diameters of the evaporators at each stage increase step by step, and the first ones are connected through valves in turn.
[0052] The primary evaporator is an evaporation tube, which includes a primary evaporation tank body 11 and a primary heating jacket 1 . The upper part of the primary heating jacket 1 is provided with a primary steam inlet 13, the lower part of the primary heating jacket 1 is provided with a primary steam outlet (12), and the primary heating jacket 1 is arranged outside the wall of the primary evaporation tank 11 for Heating the tank body, the lower end of the primary evaporation tank body 11 is provided with a primary feeding port 14, and the top of the primary evaporation ...
Embodiment 3
[0068] The preparation of embodiment 3 high-concentration electronic grade manganese nitrate
[0069] The preparation process is as Figure 5 shown.
[0070] (1) Washing: put 300Kg raw manganese flakes into the pulse washing compartment, and immerse in pure water acidified to pH=2 with nitric acid. Start the pulse pump and pulse wash for 1 hour. Turn off the pulse pump, drain the washing water from the bottom valve, add acidified pure water again, repeat the above operation and wash again. So a total of 3 times. Finally, drain the washing water and pour out the manganese flakes for later use.
[0071] (2) Chemical material: put 300Kg of raw manganese flakes after washing into a 4000L chemical material compartment, add 1500L of pure water to immerse, and directly heat the material liquid to 80-90°C with steam, and prepare in advance in a 1000L nitric acid high-level tank Good 1000Kg 65% nitric acid.
[0072] First add about 80L of 65% nitric acid to the chemical tank, if ...
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Abstract
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