Elementary Principles of Chemical Processes, Binder Ready Version
Elementary Principles of Chemical Processes, Binder Ready Version
4th Edition
ISBN: 9781118431221
Author: Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher: WILEY


Textbook Question
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Chapter 8, Problem 8.67P

An aqueous slurry at 30°C containing 20.0 wt% solids is fed to an evaporator in which enough w ater is vaporized at 1 atm to produce a product slurry containing 35.0 wt% solids. Heat is supplied to the evaporator by feeding saturated steam at 2.6 bar absolute into a coil immersed in the liquid. The steam condenses in the coil, and the slurry boils at the normal boiling point of pure water. The heat capacity of the solids may be taken to be half that of liquid water.

Chapter 8, Problem 8.67P, An aqueous slurry at 30°C containing 20.0 wt% solids is fed to an evaporator in which enough w ater

  1. Calculate the required steam feed rate (kg/h) for a slurry feed rate of 1.00 × 103 kg/h.
  2. Vapor recompression is often used in the operation of an evaporator. Suppose that the vapor (steam) generated in the evaporator described above is compressed to 2.6 bar and simultaneously heated to the saturation temperature at 2.6 bar, so that no condensation occurs. The compressed steam and additional saturated steam at 2.6 bar arc then fed to the evaporator coil, in which isobaric condensation occurs. How much additional steam is required?
  3. What more would you need to know to determine whether or not vapor recompression is economically advantageous in this process?

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Chapter 8 Solutions

Elementary Principles of Chemical Processes, Binder Ready Version

Ch. 8 - Chlorine gas is to be heated front 120°C and 1 atm...Ch. 8 - Prob. 8.12PCh. 8 - Prob. 8.13PCh. 8 - Prob. 8.14PCh. 8 - Use the enthalpy function of APEx to calculate...Ch. 8 - A stream of carbon monoxide flowing at 300 kg/min...Ch. 8 - Prob. 8.17PCh. 8 - Prob. 8.18PCh. 8 - Prob. 8.19PCh. 8 - Prob. 8.20PCh. 8 - Prob. 8.21PCh. 8 - Calculate the heat transfer (kJ) required to cool...Ch. 8 - Twenty liters of liquid n-propyl benzoate...Ch. 8 - Prob. 8.24PCh. 8 - Prob. 8.25PCh. 8 - Prob. 8.26PCh. 8 - A fuel gas containing 95 mole% methane and the...Ch. 8 - Prob. 8.28PCh. 8 - Prob. 8.29PCh. 8 - Ever wonder why espresso costs much more per cup...Ch. 8 - Prob. 8.31PCh. 8 - Saturated steam at 300°C is used to heat a...Ch. 8 - Pure ethane is burned completely with preheated...Ch. 8 - An adiabatic membrane separation unit is used to...Ch. 8 - A gas containing water vapor has a dry-basis...Ch. 8 - Prob. 8.36PCh. 8 - Prob. 8.37PCh. 8 - Prob. 8.38PCh. 8 - In the manufacture of nitric acid, ammonia and...Ch. 8 - A natural gas containing 95 mole% methane and the...Ch. 8 - The heat capacity at constant pressure of a gas is...Ch. 8 - Prob. 8.42PCh. 8 - Prob. 8.43PCh. 8 - Prob. 8.44PCh. 8 - Calculate the heat of vaporization of water...Ch. 8 - Polyvinylpyrrolidone (PVP) is a polymer product...Ch. 8 - Benzene vapor at 480°C is cooled and converted to...Ch. 8 - Prob. 8.48PCh. 8 - Prob. 8.49PCh. 8 - Prob. 8.50PCh. 8 - Prob. 8.51PCh. 8 - Prob. 8.52PCh. 8 - Prob. 8.53PCh. 8 - A stream of pure cyclopentane vapor flowing at a...Ch. 8 - Prob. 8.55PCh. 8 - Prob. 8.57PCh. 8 - A gas stream containing n-hexane in nitrogen with...Ch. 8 - A mixture of n-hexane vapor and air leaves a...Ch. 8 - An equimolar liquid mixture of n-pentane and...Ch. 8 - A liquid stream containing 50.0 mole% benzene and...Ch. 8 - Prob. 8.63PCh. 8 - Prob. 8.64PCh. 8 - Prob. 8.65PCh. 8 - Prob. 8.66PCh. 8 - An aqueous slurry at 30°C containing 20.0 wt%...Ch. 8 - Prob. 8.68PCh. 8 - Prob. 8.69PCh. 8 - A liquid is placed in a wcll-insulatcd container,...Ch. 8 - A small pharmaceutical firm plans to manufacture a...Ch. 8 - Freeze drying is a technique for dehydrating...Ch. 8 - The manufacturers of a new oatmeal product want to...Ch. 8 - Freeze concentration is used to produce a...Ch. 8 - A mixture containing 35.0 mole% n-butane and the...Ch. 8 - A liquid mixture of benzene and toluene containing...Ch. 8 - Prob. 8.79PCh. 8 - An outside-air sample is taken on a day when the...Ch. 8 - Prob. 8.83PCh. 8 - Prob. 8.84PCh. 8 - Prob. 8.85PCh. 8 - Wet solids pass through a continuous dryer. Hot...Ch. 8 - Prob. 8.88PCh. 8 - Prob. 8.93PCh. 8 - The heat of solution of ammonia in water at 1 atm...Ch. 8 - Prob. 8.96PCh. 8 - Sodium hydroxide is dissolved in enough water to...Ch. 8 - A sulfuric acid solution is labeled 8 N (where 1 N...Ch. 8 - You are about to dilute 2.00 mol of 100% sulfuric...Ch. 8 - Prob. 8.100PCh. 8 - A 0.1 mole% caustic soda (NaOH) solution is to be...Ch. 8 - Prob. 8.102PCh. 8 - Ortho-phosphoric acid (H3PO4) is produced as a...Ch. 8 - Prob. 8.104PCh. 8 - Fifty milliliters of 100% H2SO4 at 25°C and 84.2...Ch. 8 - Prob. 8.106PCh. 8 - One g-mole of pure liquid sulfuric acid at...Ch. 8 - Prob. 8.108PCh. 8 - Prob. 8.110PCh. 8 - Prob. 8.111PCh. 8 - Taking as references pure liquid sulfuric acid at...Ch. 8 - Prob. 8.113PCh. 8 - An NH3-H2O mixture containing 60wt% NH3 is brought...Ch. 8 - Prob. 8.115P

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