Problem 5.16 5.16. A stream of air (21 mole% 02, the rest N2) flowing at a rate of 100 kg/h is mixed with a stream...
Problem 5.16 5.16. A stream of air (21 mole% 02, the rest N2) flowing at a rate of 100 kg/h is mixed with a stream of CO. The CO; enters the mixer at a rate of 20.0 m/h at 150°C and 1.5 bar. What is the mole percent of CO, in the product stream? 5. Problem 5.17 S.17. Spray drying is a process in which a liquid containing dissolved or suspended solids is injected into a chamber through a spray nozzle or centrifugal disk atomizer. The resulting mist is contacted with hot air, which evaporates most or all of the liquid, leaving the dried solids to fall to a coaveyor belt at the bottom of the chamber. Dried Problems 217 Powdered milk is produced in a spray dryer 6 m in diameter by 6 m high. Air enters at 167C and-40 cm H2O. The milk fed to the atomuer contains 70% water by mass, all of which evaporates The outlet gas contains 12 mole% water and leaves the chamber at 83°C and 1 atm (absolute) at a rate of 311 mmin (a) Calculale the production rate of dried milk and the volumetric flow rate of the inlet air. Estimate the upward velocity of air (m/s) at the bottom of the dryer )Whai problem would you guess would occur if the velocity is too high?
Problem 5.16 5.16. A stream of air (21 mole% 02, the rest N2) flowing at a rate of 100 kg/h is mixed with a stream of CO. The CO; enters the mixer at a rate of 20.0 m/h at 150°C and 1.5 bar. What is the mole percent of CO, in the product stream? 5. Problem 5.17 S.17. Spray drying is a process in which a liquid containing dissolved or suspended solids is injected into a chamber through a spray nozzle or centrifugal disk atomizer. The resulting mist is contacted with hot air, which evaporates most or all of the liquid, leaving the dried solids to fall to a coaveyor belt at the bottom of the chamber. Dried Problems 217 Powdered milk is produced in a spray dryer 6 m in diameter by 6 m high. Air enters at 167C and-40 cm H2O. The milk fed to the atomuer contains 70% water by mass, all of which evaporates The outlet gas contains 12 mole% water and leaves the chamber at 83°C and 1 atm (absolute) at a rate of 311 mmin (a) Calculale the production rate of dried milk and the volumetric flow rate of the inlet air. Estimate the upward velocity of air (m/s) at the bottom of the dryer )Whai problem would you guess would occur if the velocity is too high?