【Daily Question】Chemical Engineering Principles 537: Passing NaOH solution through a mixed-bed reactor (March 24)
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The Chemical Engineering Theory section is launching the \"One Question per Day\" campaign starting today, aimed at helping everyone reinforce their basic knowledge in chemical engineering. Subsequent series will include those on \"Principles of Chemical Engineering\", \"Mass Transfer and Separation\", \"Thermodynamics in Chemical Engineering\", and \"Chemical Process Engineering\". We hope you will give it your active support~~~ Replies to the \"One Question per Day\" campaign can be viewed directly at **; the topic will be closed after 1 day! ! To encourage everyone’s continued participation this year! Participation earns 3 wealth points, with an additional 4 wealth points for correct answers~~~ Short answer question: What is the purpose of introducing NaOH solution before regeneration after a mixed-bed unit stops working? The purpose of introducing NaOH is to regenerate the anion resin to the OH form and the cation resin to the Na form, thereby increasing the density difference between the anion and cation resins and facilitating separation. Additionally, it prevents the adhesion between H-form and OH-form resins, which also aids in separation
This completely renders the cation resin ineffective, regenerates the anion resin, and increases the density difference between the cation and anion resins, thereby making it easier for them to separate into layers.
First, it can completely render the cation resin ineffective, resulting in an increase in the specific gravity of the cation resin； Secondly, it enables the anion resin to be regenerated, resulting in a reduction in its specific gravity. As the density difference between the cationic and anionic resins increases, this makes it easier for them to separate into layers.
The purpose of introducing NaOH is to regenerate the anion resin to the OH form and the cation resin to the Na form, thereby increasing the density difference between the anion and cation resins and facilitating separation. Additionally, it eliminates the sticking together of H-form and OH-form resins, which also aids in separation.
The purpose of introducing NaOH is, first, to completely deactivate the cation resin, thereby increasing its specific gravity； Secondly, it enables the anion resin to be regenerated, resulting in a reduction in its specific gravity. As the density difference between the cationic and anionic resins increases, this makes it easier for them to separate into layers.
The purpose of introducing NaOH is to regenerate the anion resin to the OH form and the cation resin to the Na form, thereby increasing the density difference between the anion and cation resins and facilitating separation. Additionally, it eliminates the sticking together of H-form and OH-form resins, which also helps with separation.
It increases the density difference between the cationic and anionic resins, making stratification easier
First, it can completely render the cation resin ineffective, resulting in an increase in the specific gravity of the cation resin； Secondly, it enables the anion resin to be regenerated, resulting in a reduction in its specific gravity. As the density difference between the cationic and anionic resins increases, this makes it easier for them to separate into layers.
The purpose of introducing NaOH is to regenerate the anion resin to the OH form and the cation resin to the Na form, thereby increasing the density difference between the anion and cation resins and facilitating separation. Additionally, it prevents the anion and cation resins in their H and OH forms from sticking together, which also aids in separation.
The purpose of introducing NaOH is, first, to completely deactivate the cation resin, thereby increasing its specific gravity； Secondly, it enables the anion resin to be regenerated, resulting in a reduction in its specific gravity. As the density difference between the cationic and anionic resins increases, this makes it easier for them to separate into layers.