Liquid-solid mass transfer at horizontal woven screens with upward cocurrent gas-liquid flow

Rates of liquid-solid mass transfer at horizontal single screens and an arr ay of horizontal parallel separated screens were studied under upward cocur rent gas (N-2)-liquid bubbly Row using the electrochemical technique. Varia bles studied were gas and liquid flow rates, and screen characteristics (e. g., mesh number and wire diameter). Under the present conditions where relatively low solution Row rates were u sed the rate of mass transfer was found to be mainly determined by the gas Row rate. For a given gas flow rate, the mass transfer coefficient decrease d with increasing solution Row rate. The data for single screen were correl ated with a dimensionless equation. Rates of mass transfer at an array of s eparated horizontal screens were lower than those at the single screen by a n amount ranging from 3 to 45% depending on screen mesh number and flow con ditions. The importance of the present study for building continuous high s pace time yield catalytic, and electrochemical reactors suitable for electr ochemical air pollution control is highlighted.