Design of structured packing towers
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I am designing a small packed tower to treat hydrogen sulfide gas using a sodium hydroxide solution with a mass fraction of 4%. The inlet concentration of hydrogen sulfide is 2000 ppm, the air flow rate is 300 cubic meters per hour, and the liquid flow rate is 1100 kg/h; the desired outlet concentration is 30 ppm. The calculation results show a tower diameter of 350 mm and a tower height of 1860 mm. Gentle masters, are my calculation results correct? I want to reduce the height of the tower. What measures can be taken?
The calculated diameter of the packed tower is more or less the same; the height can be accurately determined by determining the number of theoretical plates required. A filler height of 2 meters is about right as well. Hydrogen sulfide itself is also a substance that is easily absorbed. To reduce the tower height, the key is to use a more efficient packing and increase the number of theoretical stages. However, 2 meters of packing is already quite low, and the efficiency of the initial distribution area of the gas-liquid phases on the packing is not high.