In a distillation tower, a mixture of two components A and B with equal molar ratio and a rate of 5000 kg mol per hour is introduced. The molar fraction except A in the top product of the tower is 95% molar and the molar fraction B in the lower product of the distillation tower is 95%. A) Find the flow of each component in the product above and below the distillation tower. B) If the return fluid flow ratio is R = 2 Rmin, find the working line above the tower C) If 40% of the feed evaporates after entering the distillation tower, find the feed working line. D) Find the minimum number of equilibrium steps and the number of equilibrium steps in the (Rectifying) section. E) If (Partial Reboiler) and (Partial Condenser) are used. Find the number of trays. F) What is the number feed tray number tray? * The relative volatility coefficient B in A is equal to 0.2.

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7.40. The cart in Fig. 7.38 has a mass of 2000 kg. It is resting on frictionless wheels on a solid, level surface and encounters no air resistance. At time zero it is standing still, and a jet from a fire hose is used to start it moving. The mass flow rate of the fluid from the fire hose is 100 kg / s, and its velocity relative to fixed coordinates is 50 m/s. The cup on the rear of the cart turns the jet around so that it leaves in the -x direction with the same velocity relative to the cart with which it entered. Calculate the velocity-time behavior of the cart; assume the jet is unaffected by gravity. (This is not a very practical problem, but it is analogous to the more complex and interesting problem of starting a large turbine from rest. All such turbines must be occasionally shut down for maintenance; their starting and stopping behavior is more complex than their behavior running at a steady speed.)

. (Grinding Operations and Grinding Machines) (USCS units) In a centerless grinding operation, the grinding wheel diameter = 8 in, and the regulating wheel diameter = 5.0 in. The grinding wheel rotates at 1500 rev/min, and the regulating wheel rotates at 180 rev/min. The inclination angle of the regulating wheel = 2.3°. Determine the production rate of cylindrical work parts whose diameter = 0.5 in and length = 5.0 in. Solutions used; fr = TD₂N, sin I