subject
Engineering, 21.05.2020 19:05 sugar1014

A packed column is used to reduce the levels of a pollu- tant in a gas stream from a mole fraction of 0.025 to a mole fraction of 0.00015. The gas stream lows at a rate of 10.0 m3/min while pure water enters the top of the column at a rate of 15.0 kg/min. The 2.25 m diameter tower will be packed with 19 mm ceramic Raschig rings, providing an interfacial surface area-to-volume ratio of 262 m2/m3. The overall mass-transfer coefficient based on the gas-phase driving force is 69.4 mol/m2 h. The system operates at 40°C and atmospheric pressure. The pollutant follows the Henry's law relation with the Ben- ry's law constant equal to 1.75 x 105 Pa. Probiem 27 The total height of packing required to achieve the de- sired separation is most nearly (A) 1.61 ㎡ (B) 5.81 m (C) 20.3 r (D) 53.5 m

ansver
Answers: 2

Other questions on the subject: Engineering

image
Engineering, 04.07.2019 19:10, nida7864
An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed
Answers: 3
image
Engineering, 04.07.2019 19:20, rida10309
At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2
Answers: 2
image
Engineering, 04.07.2019 19:20, mariahmimibrooks
Liquid flows at steady state at a rate of 2 lb/'s through a pump, which operates to raise the elevation of the liquid 100 ft from control volume inlet to exit. the liquid specific enthalpy at the inlet is 40.09 btu/lb and at the exit is 40.94 btub. the pump requires 3 btu/s of power to operate. if kinetic energy effects are negligible and gravitational acceleration is 32.174 tt/s, the heat transfer rate associated with this steady state process is most closely 1)-2,02 btu/s from the liquid to the surroundings 2)-3.98 btu/s from the surroundings to the liquid. 3)-4.96 btu/s from the surroundings to the liquid. 4)-1.04 btu/s from the liquid to the surroundings.
Answers: 2
image
Engineering, 04.07.2019 19:20, rosemary909
In the winter, in order to keep the classroom steadily at 68 f before 10 pm, heating with an average rate of 42,000 btu/hr is provided. assume the outdoor temperature maintains at 32°f, determine the electrical power (kw) required to (a) operate a reversible heat pump (b) operate a real heat pump with a cop (7) of 4.5 and (c) operate an electrical-resistance heater.
Answers: 3
You know the right answer?
A packed column is used to reduce the levels of a pollu- tant in a gas stream from a mole fraction o...

Questions in other subjects:

Konu
Computers and Technology, 24.06.2020 21:01