Regarding the setting of the Henry component in the absorption process
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As the title suggests, the poster is reading a book by Professor Bao, which contains an example problem related to the use of water to absorb ammonia from the air in 10 theoretical columns. So the question is, in this absorption process, I must set ammonia as the Henry component in order to obtain the same result as that in the example solution. However, under the given conditions (20°C, 1 bar), ammonia can definitely have a liquid phase. Dear teachers, how is the setting of the Henry component considered during the absorption process? Thank you!
At (20°C and 1 bar), ammonia can indeed exist in a liquid phase – what does this mean?
Isn’t the Henry component a substance for which a liquid phase is impossible to exist at the system’s pressure and temperature (only a gas phase exists)? That is, when the system temperature is higher than the critical temperature of the substance, or when the system pressure is lower than the critical pressure, the substance can exist only in the gas phase.
The Henry component in Aspen refers to supercritical gases or poorly soluble gases
But obviously ammonia is highly soluble in water, right? I’ve heard a statement that the Henry component in aspen refers to those substances that enter the liquid phase by dissolution at the current temperature and pressure, rather than by condensation; I’m not sure if this is correct
In my understanding, ammonia refers to ammonia molecules in an aqueous solution; ions are not considered