Cinobufagin ethanol precipitation device and method for controlling ethanol adding amount in ethanol precipitation process of cinobufagin
A technology of cinobufaniol and a control method, which can be applied to separation devices, separation methods, chemical instruments and methods, etc., can solve the problems of uneven distribution in irrigation, inaccurate volume measurement, etc., and achieves simple and convenient operation and guaranteed accuracy. , the effect of improving work efficiency
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Embodiment 1
[0043] Step 1): Weigh the weight of the alcohol-immersed injection and return to zero, set the cinobufacin extract M to 50Kg on the controller, the alcohol-infused ethanol concentration a to be 70%, and the end-point alcohol content b to be 50%;
[0044] Step 2): Take the cinobufacin extract with a density of 1.05g / ml, add it to the alcohol precipitation irrigation, and the actual added cinobufacin extract m measured by the load cell is 49.6Kg; the controller according to the alcohol precipitation ethanol concentration a is 70%, and the end-point alcohol content b is 50%, calculate the amount of alcohol added S, wherein the amount of added alcohol S=m*b / (a-b)=49.6*70% / (70%-50%)=173.6Kg;
[0045] Step 3): The controller controls to open the ethanol feed valve, the ethanol flowmeter accumulates the amount of ethanol added, the ethanol density meter measures the density of the added ethanol as ρ is 0.8314, and the volume V of alcohol addition is calculated, V=S / ρ=173.6 / 0.8314=20...
Embodiment 2
[0048] Step 1): Weigh the weight of the alcohol-immersed injection, and return to zero, set the cinobufacin extract M to 50Kg on the controller, the alcohol-infused ethanol concentration a to be 80%, and the end-point alcohol content b to be 60%;
[0049]Step 2): Take the cinobufacin extract with a density of 1.08g / ml, add it to the alcohol precipitation irrigation, and the weighing sensor measures that the actually added cinobufacin extract m is 49.6Kg; the controller according to the alcohol precipitation ethanol concentration a is 80%, the alcohol content b at the end point is 60%, and the alcohol addition amount S is calculated, wherein the alcohol addition amount S=m*b / (a-b)=49.6*60% / (80%-60%)=148.8Kg;
[0050] Step 3): The controller controls to open the ethanol feed valve, the ethanol flowmeter accumulates the amount of ethanol added, the ethanol density meter measures the density of the added ethanol as ρ is 0.8314, and calculates the volume V of alcohol addition, V=S / ρ...
Embodiment 3
[0053] Step 1): Weigh the weight of the alcohol-infused solution and return to zero, set the cinobufacin extract M to 50Kg on the controller, the alcohol-infused ethanol concentration a to be 100%, and the end-point alcohol content b to be 90%;
[0054] Step 2): Take the cinobufacin extract with a density of 1.20g / ml, add it to the alcohol precipitation irrigation, and the actual added cinobufacin extract m measured by the load cell is 49.6Kg; the controller according to the alcohol precipitation ethanol concentration a is 100%, the alcohol content b at the end point is 90%, and the alcohol addition amount S is calculated, wherein the alcohol addition amount S=m*b / (a-b)=49.6*100% / (100%-90%)=496Kg;
[0055] Step 3): The controller controls to open the ethanol feed valve, the ethanol flowmeter accumulates the amount of ethanol added, the ethanol density meter measures the density of the added ethanol as ρ is 0.8314, and calculates the volume V of adding alcohol, V=S / ρ=496 / 0.831...
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