Help with calculations for hydrogen production via water electrolysis
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I have a calculation related to water electrolysis process and I’m not sure how to do it; I hope everyone can offer some guidance. Electrolyzer with a design pressure of 1.5 MPa and a temperature of 85 degrees Celsius. The electrolyte is a 25% potassium hydroxide solution, and water electrolysis produces hydrogen and oxygen. How is the amount of potassium hydroxide carried away by hydrogen during the electrolysis process calculated? Thank you
{:3_50:} Such high pressure – can it be ignored? To maintain the concentration of potassium hydroxide, some potassium hydroxide solution can be added during water replenishment, depending on the actual conditions
Thank you! The potassium hydroxide solution definitely needs to be replenished; I’m now looking for the theoretical value of the alkali solution carried along with the hydrogen gas~~~
@yhf1219 @Pingsha @caldo @julius6054 @263525689 @68ZCW @StudentInTheSea @PrincessYiyi @zpg @aicr317 @naclgf @yaobing @nglcx2003cn @onefly2009 @alwaysyz I don’t know how to calculate it; please help me out!
Setting aside the characteristics of the electrolyzer, let’s abstract the problem: a rectangular container holds a solution in which gas is generated; under given temperature and pressure conditions, what is the amount of solution that will be carried away by the gas? Put more simply, it’s somewhat similar to the calculations for gas-liquid entrainment in towers. This is likely a typical case where only empirical formulas (to be precise, empirical formulas from the caustic soda industry) are available, with no theoretical formulas for calculation. If one really wants to solve this problem accurately, it would probably be necessary to use a minicomputer; ordinary personal computers are not capable of handling it. There are too many factors that need to be taken into account in the mathematical model, and just the various boundary conditions alone are already a major challenge. It is recommended that the original poster carefully review the relevant data on the ion-exchange membrane caustic soda industry; it would be best to consult skilled technicians from related companies who are good at thinking and avoid making random guesses. .
Sir, do you have any other calculation materials related to water electrolysis?
Things like equipment size, pipe size, valve type, control instruments, and so on. Thank you very much
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