Exercise 9.1
Subject: Selection of type condenser and operating pressure for distillation of propionic and n-butyric acids. Given: Distillate of 95 mol% propionic acid. Bottoms of 98 mol% n-butyric acid. Assumptions: Ideal solutions so that Raoult's
Exercise 8.1
Subject: Extraction vs. Distillation.
Given: Dilute mixture of benzoic acid in water. Find: Why liquid-liquid extraction is the preferred separation method. Analysis: At 1 atm, the boiling point of benzoic acid is 249.2OC. Thus, if a di
Exercise 1.1 (i)
Known: Fluorocarbons can be produced from the reaction of carbon tetrachloride and hydrogen fluoride followed by a number of separation steps. Given: Flow diagram and a brief description of a fluorocarbons production process in "Chem
Exercise 10.1
Subject: Independency of MESH equations Given: Equations (10-1), (10-3), (10-4), and (10-6).
Prove: Equation (10-6) is not independent of the other 3 equations Analysis: Eq. (10-6) can be derived from the other 3 equations as follows,
Exercise 7.1
Subject: Comparison of absorption, distillation, and stripping
Find: Differences between absorption and distillation, and stripping and distillation Analysis: Absorption Feed is gas Second phase (absorbent) is added Operation can be adi
Exercise 6.1
Subject: Given: Simultaneous absorption and stripping. Fig. 6.1 in which simultaneous absorption and stripping occur.
Find: Whether absorption and stripping is more important. Stripping of water = 22 kmol/h Absorption of acetone = 10.35
Exercise 2.1
Subject: Minimum work for separating a hydrocarbon stream. Given: Component flow rates, ni , of feed and product 1, in kmol/h. Phase condition; temperature in K; enthalpy, h, in kJ/kmol; and entropy, s, in kJ/kmol-K for feed, product 1,
Exercise 3.1
Subject: Evaporation of a mixture of ethanol (AL) and ethyl acetate (AC) from a beaker into still air within the beaker. Given: Initial equimolar mixture of AL and AC, evaporating into still air at 0oC and 1 atm. Vapor pressures and diff
Exercise 4.1
Subject: Degrees of freedom analysis for a three-phase equilibrium stage. Given: Equilibrium stage of Figure 4.35, with two feeds (one vapor, one liquid), vapor entering from stage below, liquid entering from stage above, three exiting s
Exercise 5.1
Subject: Three-column interlinked cascade for a four-component system.
Given: Configuration for a two-column interlinked cascade for a three-component system Find: Devise the three-column cascade. Analysis: The system is shown in the sk