Absorption tower tray
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Why does my low-temperature methanol washing absorption tower have only 11 trays? 【The absorption rate of CO2 reaches 99.46%, and the contents of other outlet components are also satisfactory】
After calculating the theoretical number of plates, it is necessary to determine the plate efficiency using the \"average relative volatility and average viscosity\"; thereafter, the theoretical number of plates/plate efficiency is calculated； Then, an exponent must also be determined based on empirical data; this exponent, I think, is generally between 1.5 and 2.5! This coefficient is based on my own experience; I hope experts can offer some guidance!
Reply to the original poster: Your upper column has only 11 trays, what about the lower column? How many trays in total? How did you do the calculation? Explain your method, and let’s all help diagnose it to see what issues there might be!
Friend, do these average relative volatilities and average viscosities refer to the solute and solvent? Can it generally be found in that kind of books?
Try looking it up in the chemical engineering handbook to see if you can find it Of course, it won’t be found by a direct search; perform simple calculations using the appropriate formulas first and then search!
The tray efficiencies for both the upper and lower towers must be applied! I have only calculated distillation columns; I haven’t calculated absorption columns. Such design examples are usually included in the course assignment books for chemical engineering principles! Take the time to look it up by yourself! If you can’t find it, contact me again!
The CO2 content in your purified gas is 2.5%, which is too high; the CO2 level in gases used for methanol or ammonia synthesis should be kept within 25PPM
Oh, I was mistaken. So what is the H2S purification standard?
Theoretically, it is completely removed, but in practice, due to levels below 1 ppm