【Daily Topic】【HVAC Version 20160810】
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Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. There is a ventilation system operating at T = 20℃ and P = 1 atm, with H2S making up 5.4% (by volume) of the air being exhausted, and an exhaust flow rate of 0.5 m3/s. In the absorption tower, water is used to absorb H2S; the actual liquid supply volume is 1.3 times the minimum required volume, and the total gas-phase absorption coefficient Kg is 0.0021 kmol/(m2·s). It is required that the H2S concentration in the gas phase at the outlet of the absorption tower not exceed 1000 ppm. Calculate the actual liquid supply rate in ( ) kg/h. A.8.4×102 B.8.4×103 C.8.4×104 D.8.4×105
D.8.4×105
There is a ventilation system operating at T = 20°C and P = 1 atm, with H2S accounting for 5.4% (by volume) in the exhaust air, and an exhaust flow rate of 0.5 m3/s. In the absorption tower, water is used to absorb H2S; the actual liquid supply volume is 1.3 times the minimum required volume, and the total gas-phase absorption coefficient Kg is 0.0021 kmol/(m2·s). It is required that the H2S concentration in the gas phase at the outlet of the absorption tower not exceed 1000 ppm. Calculate the actual liquid supply rate as (D) kg/h. A.8.4×102 B.8.4×103 C.8.4×104 D.8.4×105
There is a ventilation system operating at T = 20°C and P = 1 atm, with H2S accounting for 5.4% (by volume) in the exhaust air, and an exhaust flow rate of 0.5 m3/s. In the absorption tower, water is used to absorb H2S; the actual liquid supply volume is 1.3 times the minimum required volume, and the total gas-phase absorption coefficient Kg is 0.0021 kmol/(m2·s). It is required that the H2S concentration in the gas phase at the outlet of the absorption tower not exceed 1000 ppm. Calculate the actual liquid supply rate as (B) kg/h. A.8.4×102 B.8.4×103 C.8.4×104 D.8.4×105