Cyclone separators remove moisture from gases
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The hydrogen chloride produced after the hydrochloric acid is decomposed still contains 1% moisture after condensation. Is it possible to remove this moisture using a cyclone separator? Those who know the answer could please provide some guidance. Thank you!
Personally, I think it can be ruled out, but it’s not worthwhile for the following reasons: 1. Cyclone separators are generally used to separate gas-solid mixtures, primarily by taking advantage of the large density difference between the two. In gas-liquid states, the separation efficiency is not necessarily good, and entrainment is likely to occur. 2. From the perspective of the medium, even if it is an aqueous solution, it will still cause corrosion to the material, so the cost of the equipment will inevitably be high. This is just my personal opinion for reference only; if you have different views, feel free to share them.
I don’t think it’s feasible; cyclone dust collectors are mainly used for gas-solid separation. Can concentrated sulfuric acid be used for drying?
What I mean is that it’s theoretically feasible, but the actual performance may not be good! Therefore, theory must be linked to practice. :lol
Theoretically, both gas-liquid and gas-solid systems are possible, as long as there is an order of magnitude difference in density; I think that’s sufficient. However, in practice, such methods are not used for gas-liquid separation. I’m not sure if there is any theoretical research on this topic – namely, what density difference is required, or what value the D50 diameter of the particles should be
This post was last edited by Qingchengjun on 2020-5-28 09:14. Taking 20°C as an example, the saturated vapor pressure of hydrogen chloride is 4.2 Mpa; if the actual pressure of the medium is 0.5 Mpa, then it should be calculated using 0.5 Mpa. The vapor pressure of water vapor is 0.0023 Mpa; 0.0023/0.5 = 0.46%, which is still a bit different from your 1%, but the difference isn’t significant. Cyclone separation can be used; the limit is 0.46%, and in practice the value is slightly higher than 0.46%
With the insufficient separation accuracy of the cyclone separator, it’s definitely impossible to remove it. A gas-liquid coalescer is an option, but the compatibility between acidic gases and the filter element material must be taken into account! I can help you resolve this kind of problem perfectly – at a low cost, with high efficiency, and ensuring long-term online operation!
This post was last edited by pzhmotor on 2020-7-17 at 15:29. There are people in the forum who promote the \"feather separator\"; I’ve seen some of the materials they posted, and the principle behind it is also power separation. It should be able to handle the situation described by the poster, though corrosion-related issues might present some difficulties. The original poster can search using the keyword “yuye”.