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A continuous evaporator is operated with a given feed material under conditions in which the concentration of the product remains constant. The feed rate at the start of a cycle after the tubes have been cleaned has been found to be 5000 kg/h. After 48 h of continuous operation, tests have shown that the feed rate decreases to 2500 kg/h. The reduction in capacity is due to true scale formation. If the down time per cycle for emptying, cleaning, and recharging is 6 h, how long should the evaporator be operated between cleanings in order to obtain the maximum amount of product per 30 days?
Explain the Integral and Differential method of analysis for finding the rate of reaction.(May-2005)2.For the elementary reaction in series Ak1Rk2S if k1= k2and at t = 0, CA= CAoandCRo= CSo= 0, find the maximum concentration of R.
You add an aqueous solution of lead nitrate to an aqueous solution of potassium iodide. Draw highly magnified views of each solution individually, and the mixed solution including any product that forms.
For the conditions indicated in Prob. 7, prepare a log-log plot of fluid velocity in feet per second versus optimum economic pipe diameter in inches. The plot should cover a fluid-velocity range of 1 to 100 ft/s and a pipe-diameter range of 1 to 1..
A completely enclosed stirred-tank heating process is used to beat an incoming stream whose flow rate varies. The heating rate from this coil and the volume are both constant.(a) Develop a mathematical model (differential and algebraic equations) tha..
The mole fraction of ammonia in exit gas from the tower is 0.003. Assuming isothermal operation and considering the following equilibrium data calculate the height of the packed bed.
what are the implications of the future of fabrication for international trade transportation and
Calculate the maximum allowable particle size as a function of the bulk glucose concentrations of 5 g/ l and 50 g /l. For medium containing 30 g /l glucose, calculate Rmax at cell loading of 5 and 30 wt%.
For the consecutive reaction , A----K1(B-K2--(C, numerical values are K1 = 0.85 hr^-1, K2 = 0.13 hr^-1, Cao = 64 kg -mole /m3 and Cbo = Cco =0 . what is the maximum concentration attained by B when as 1).Batch reactor ,( 2 ) -single stage continuo..
The heat capacity is defined as the amount of energy required to change the temperature of an object. The specific heat capacity is defined as the amount of energy required to change the temperature of an object per mole of the substance.
describe the principles of a vapour adsorption refrigeration system and compare this to a vapour recompression system.
What is the composition by mass percent of the original mixture? Explain in detail how you arrived at this answer, writing down every step to the solution.
It is proposed to use an existing distillation column, which is fitted with a dephlegmator (reflux condenser) that has 200 vertical, 50 mm i.d. tubes, for separating benzene from a mixture of chlorobenzenes.
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