Do salts such as calcium chloride and sodium chloride have a higher solubility in water or in steam at 100 degrees Celsius?
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I am considering using a technology for evaporating desulfurization wastewater in flues. Given that water evaporates into steam at high temperatures, I wonder whether salts are more soluble in water or in steam. If they are more soluble in steam, then the salts will remain in the steam and can be removed eventually; if they are more soluble in water, then some of the salts may not be able to be removed.
How high is the hot flue gas? Over 800 degrees? If the temperature is below 800 degrees, sodium chloride can be considered non-volatile.
High-temperature flue gas is around 150°C.
150 degrees is almost like boiling water for inorganic salts; the amount of salt that evaporates is extremely small
This post was last edited by qugd on 2017-4-9 21:29. The concept of solubility does not apply to gas phase composition; gas phase composition is homogeneous and is represented by its respective partial pressures. The behavior of salts in high-temperature steam should be such that the presence of steam causes the salts to absorb a certain amount of water, resulting in a gas-liquid equilibrium with the steam; in other words, saturated vapor at the current temperature is formed on the surface of the liquid, and the salt solution will also have a very high concentration.