Separation Process Principles on COCO/ChemSep

based on  Henley, Seader, Roper: Separation Process Principles, Third edition, Wiley (2011).



EXAMPLE 4.1 Phase Conditions of a Process Stream.

A 100-kmol/h feed of ------ what are the liquid and vapor compositions?

[Solution]  sppex_4_1.xls    sppex_4_1.fsd

EXAMPLE 4.2 Bubble-Point Temperature.

The nC4-rich bottom product------estimate the mixture temperature


[Solution]     sppex_4_2.fsd

EXAMPLE 4.3 Bubble-Point Pressure.

---Calculate that pressure using the following composition, activity coefficients, and vapor pressures:


[Solution]    sppex_4_3.fsd

EXAMPLE 4.4 Distillation column operating pressure.

Propylene is separated from 1-butane by distillation into a vapor distillate containing 90mol% propylene. Calculate the column pressure if the partial condenser exit temperature is 100F----


[Solution]    sppex_4_4.fsd

EXAMPLE 4.5 Adiabatic Flash of the Feed to a Distillation Column.

-- Calculate the percent molar vaporization of the feed and compositions of the vapor and liquid if the pressure is decreased adiabatically from 485 to 165 psia ---

[Solution]     sppex_4_5.fsd

EXAMPLE 4.6 Single-Stage Extraction of Acetic Acid.

Methyl isobutyl ketone (C) is used as a solvent to remove acetic acid (B) from -- water (A)---estimate the kg/h of solvent for a single equilibrium stage.

[Solution]     sppex_4_6.sep

EXAMPLE 4.7 Single-Equilibrium Stage Extraction Using Diagrams.

Methyl isobutyl ketone (C) is used as a solvent to remove acetic acid (B) from -- water (A)---estimate the kg/h of solvent for a single equilibrium stage.


[Solution]   sppex_4_7.sep (ASOG)

EXAMPLE 4.8 Liquid-Liquid Equilibrium for a Four-Component Mixture.

Estimate the amounts of the phases in kg/h and the equilibrium phase compositions ---


[Solution]  sppex_4_8.sep  (Modified UNIFAC) 

EXAMPLE 4.13 Absorption of CO2 with Water.

The CO2 is vented at the top of the mountain --- calculate the amount of water --

[Solution]  sppex_4_13.fsd (EOS/Predictive SRK)

EXAMPLE 4.14 Equilibrium Diagram for Air-NH3-H2O at 20C and 1 atm.

-- If 10 mol of gas of Y=0.3 are contacted with 10 mol of solution of X=0.1, what are the compositions of the resulting phases? ----

[Solution]  sppex_4_14.fsd   (K-value: Polynomial K from The ChemSep Book p. 43)

EXAMPLE 5.2 Extraction with Different Cascade Arrangements.

-- A feed of a 25% solution of p-dioxane in water is to be separated with benzene. ---

[Solution] sppex_5_2.sep    (Modified UNIFAQ)

EXAMPLE 5.3 Absorption of Hydrocarbons by Oil.

-- the heavier components in a superheated hydrocarbon gas are to be removed by absorption with a high-molecular -weight oil.

[Solution]   sppex_5_3.fsd     (TEA/Pen Robinson)

Chapter 6, Industrial Example ( Acetone vapor absorption by water)

--30-trey absorber is to recover the acetone by contacting the gas with a suitable absorbent, water. --

[Solution]  sppex_6_0.fsd     (DECHEMA/Modified UNIFAC/Extended Antoine)

EXAMPLE 6.1 Recovery of Alcohol

A CO2-rich vapor with a small amount of ethyl alcohol is evolved. The alcohol is recovered by absorption with water in a sieve-tray tower. --

[Solution]  sppex_6_1.fsd      (EOS/Predictive SRK)

EXAMPLE 6.2 Stripping of VOCs from Wastewater

-- the stripping by air of volatile organic compounds (VOCs) from wastewater. ---

[Solution] sppex_6_2.fsd       (EOS/Predictive SRK)

EXAMPLE 6.3 Absorber Efficiency.

Performance data, given below for a trayed absorber --, were reported. -- Based on the these data, back-calculate the overall stage efficiency--

[Solution]   sppex_6_3.fsd       (TEA/Pen Robinson)

EXAMPLE 6.10 Absorption of SO2 in a Packed Column.

Air containing 1.6% by volume SO2 is scrubbed with pure water in a packed column -----

[Solution] sppex_6_10.fsd     (EOS/Predictive SRK)

EXAMPLE 6.11 Absorption of Ethylene Oxide.

A gaseous reactor effluent of 2 mol% ethylene oxide in a inert gas is scrubbed with water at 30°C and 20 atm. -----

[Solution]   sppex_6_11.fsd    (EOS/Predictive SRK)

EXAMPLE 6.13 Flooding, Pressure Drop, and Diameter.

Forty lbmol/h of air containing 5 mol% NH3 enters a packed column at 20°C and 1 atm, where 90% of the ammonia is scrubbed by a countercurrent flow of 3000 lb/h of water. -----

[Solution]  sppex_6_13.fsd    (EOS/Predictive SRK)

EXAMPLE 6.16 NTU for a Packed Column with Concentrated Solute.

To remove 95% of the ammonia from an air stream containing 40% ammonia by volume, 488 lbmol/h of absorbent per 100 lbmol/h of entering gas are used -----

[Solution]  sppex_6_16.fsd     (EOS/Predictive SRK)

Chapter 7, Industrial Example: Distillation of a binary mixture of benzene and toluene.

[Solution]  sppex_7_0.fsd     (DECHEMA/Van Laar/Extended Antoine)

EXAMPLE 7.1 Distillation of a Mixture of Benzene and Toluene.

Four hundred and forty lbmol/h (204 kmol/h) of a mixture of 60 mol% benzene (LK) and 40 mol% toluene (HK) is to be separated into a liquid distillate and a liquid bottoms product of 95 mol% and 5 mol% benzene, respectively. ------

[Solution] sppex_7_1.fsd   (DECHEMA/Van Laar/Extended Antoine)

EXAMPLE 7.3 McCabe-Thiele Methd for a Column with Only a Feed Plate.

Solve Example 7.2: (a) graphically, assuming that the feed is introduced on plate 1----

[Solution]  sppex_7_3.fsd   (DECHEMA/Van Laar/Extended Antoine)

EXAMPLE 7.4 McCabe-Thiele Method for a Very Sharp Separation.

Repeat part (c) of Example 7.1 for benzene distillate and bottoms purities of 99.9 and 0.1 mol%, respectively. ------

[Solution]  sppex_7_4.fsd   (DECHEMA/Van Laar/Extended Antoine)

Chapter 8, Industrial Example.

A feed of 30,260 lb/h of 22 wt%  acetic acid in water is sent to a single-section extraction column operating at ambient conditions, where it is contacted with 71,100 lb/h of ethyl-acetate solvent. ------

[Solution] sppex_8_0.sep     (Modified UNIFAQ)

EXAMPLE 8.1 Equilibrium Stages for Extraction.

Acetone is to be extracted from a 30 wt% acetone (A) and 70 wt% ethyl acetate (C) feed at 30°C, using pure water (S) as the solvent ------

[Solution]  sppex_8_1.sep    (Modified UNIFAQ)

EXERCISE 8.11.  Extraction of acetone by trichloroethane.

One thousand kg/h of a 45 wt% acetone-in-water solution is to be extracted at 25°C in a continuous, countercurrent system with pure 1,1,2-trichloroethane to obtain a raffinate containing 10 wt% acetone.----

[Solution]   sppexc_8_11.sep  (Modified UNIFAQ)

EXERCISE 8.13. Extraction of isopropanol with water.

A distillate of 45 wt%  isopropyl alcohol, 50 wt% diisopropylether, and 5 wt % water is obtained from an isopropyl alcohol finishing unit. The ether is to be recovered by liquid-liquid extraction with water, the solvent, entering the top and the feed entering the bottom, ------

[Solution]    sppexc_8_13.sep  (Modified UNIFAQ)

EXAMPLE 9.1 - 9.7. Debutanizer.

The multicomponent hydrocarbon feed in Figure 9.2 is typical of the feed to the recovery section of an alkylation plant in a petroleum refinary. ---

[Solution]   sppex_9_1.fsd   (Raoul's law/ Antoine)

EXAMPLE 9.8 Stripping with Nitrogen.

Sulfur dioxide and butadienes (B3 and B2) are to be stripped with nitrogen from the liquid stream given in Figure 9.15  ---

[Solution]   sppex_9_8.fsd  (DEHEMA/modified UNIFAQ/Antoine)