When a high-pressure medium enters a low-pressure device during chemical production, what changes occur to the medium? What is its principle?
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During chemical production, high-pressure media enter low-pressure equipment, and some of these media partially condense. What is the principle behind this? Please share your opinions!
High-temperature mixed medium flash evaporation is an example: as the pressure decreases, some of the medium absorbs heat and vaporizes, while some condenses.
1# dinglu101 The principle is the relationship between the saturated vapor pressure and the ambient pressure. If the saturated vapor pressure is higher than the ambient pressure, the liquid will vaporize rapidly
A high-pressure medium shouldn’t be a pure medium, right? I believe that when a low-boiling-point medium enters a low-pressure container, flashing requires the absorption of heat, while high-boiling-point substances release heat and condense into a liquid state.
Thank you all. I think it’s the relationship among the actual pressure of the gas medium, the saturated vapor pressure of the medium, and the ambient pressure. When the gas medium moves from a high-pressure system to a low-pressure system, it has a high saturated vapor pressure in the high-pressure system, but a lower saturated vapor pressure in the low-pressure system. As a result, when the medium enters the low-pressure system, it is in a supersaturated state, and that’s why the gas condenses – that’s how it works, right?
It’s vaporization. Whether it’s a pure substance or not doesn’t matter; just look up the definition of vaporization on Baidu
Back to floor 5: The saturation vapor pressure is not related to the system pressure, but rather to temperature.
I’ve checked the materials and their conditions. As a simple example, high pressure refers to high-pressure water, while low pressure refers to low-pressure water; in both cases it’s still water； What flashing? The high-pressure substance is a gas, and the substance that enters the low-pressure area is also a gas; the possible outcomes are complex. It is possible that the high-pressure gas expands and absorbs heat, resulting in a liquid state once the pressure stabilizes, or it may remain a gas ； High-pressure materials are liquids that can easily flash over into low-pressure materials; there may be various outcomes, in the form of gas or liquid. In fact, without any context, this question has no answer