ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS
ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS
4th Edition
ISBN: 9781119330745
Author: FELDER
Publisher: WILEY
Question
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Chapter 6, Problem 6.32P
Interpretation Introduction

(a)

Interpretation:

The flowrate of the given process is to be drawn and labelled. Also, the given expressions are to be derived.

Concept introduction:

A flowchart is the complete representation of a process through boxes or other shapes which represents process units and arrows that represents the input and output of the process. The flowchart must be fully labelled to infer important data about the process involved.

In a system, a conserved quantity (total mass, mass of a species, energy or momentum) is balanced and can be written as

input+generationoutputconsumpumtion=accumulation

Here, ‘input’ is the stream which enters the system. ‘generation’ is the term used for the quantity that is produced within the system. ‘output’ is the stream which leaves the system. ‘consumption’ is the term used for the quantity that is consumed within the system. ‘accumulation’ is used for the quantity which is builds up within the system.

All the equations which are formed are then solved simultaneously to calculate the values of the unknown variables.

The formula for the fractional conversion (f) is

f=moles reactedmoles fed   ......(1)

Dew-point temperature is the temperature at which the first drop of liquid appears when a vapor is cooled slowly at the constant pressure. At this point the condensation starts.

Solvent vapor recovery from a gas stream is done by condensation of the solvent vapor. This can be achieved by cooling the gas mixture, compressing it, or the combination of these two operations. More is the compression of the gas; less is the cooling requirement.

For a system containing one condensable gas, the applicable Raoult’s law equation is

pi=yP=p   ......(2)

Interpretation Introduction

(b)

Interpretation:

A spreadsheet is to be prepared according to the given form to estimate the cost of the given process.

Concept introduction:

Dew-point temperature is the temperature at which the first drop of liquid appears when a vapor is cooled slowly at the constant pressure. At this point the condensation starts.

Solvent vapor recovery from a gas stream is done by condensation of the solvent vapor. This can be achieved by cooling the gas mixture, compressing it, or the combination of these two operations. More is the compression of the gas; less is the cooling requirement.

For a system containing one condensable gas, the applicable Raoult’s law equation is

pi=yP=p   ......(2)

Interpretation Introduction

(c)

Interpretation:

The total cost of the operation is to be minimized for temperature variation using Solver.

Concept introduction:

Dew-point temperature is the temperature at which the first drop of liquid appears when a vapor is cooled slowly at the constant pressure. At this point the condensation starts.

Solvent vapor recovery from a gas stream is done by condensation of the solvent vapor. This can be achieved by cooling the gas mixture, compressing it, or the combination of these two operations. More is the compression of the gas; less is the cooling requirement.

For a system containing one condensable gas, the applicable Raoult’s law equation is

pi=yP=p   ......(2)

Interpretation Introduction

(d)

Interpretation:

The total cost of the operation is to be minimized pressure variation using Solver.

Concept introduction:

Dew-point temperature is the temperature at which the first drop of liquid appears when a vapor is cooled slowly at the constant pressure. At this point the condensation starts.

Solvent vapor recovery from a gas stream is done by condensation of the solvent vapor. This can be achieved by cooling the gas mixture, compressing it, or the combination of these two operations. More is the compression of the gas; less is the cooling requirement.

For a system containing one condensable gas, the applicable Raoult’s law equation is

pi=yP=p   ......(2)

Interpretation Introduction

(e)

Interpretation:

The effects of Tf and Pf on each other and on the refrigeration as well as compression cost is to be summarized. The reason for the minimized total cost is to be explained.

Concept introduction:

When a space, substance, or system is cooled below its ambient temperature and the excess heat removed from it is rejected to a high-temperature reservoir, then the process is known as Refrigeration.

Compression is the process in which the pressure of a gas is increased, and its volume is decreased. This leads to the phase change of the gas from vapor to liquid.

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Chapter 6 Solutions

ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS

Ch. 6 - Prob. 6.11PCh. 6 - Prob. 6.12PCh. 6 - Prob. 6.13PCh. 6 - Air at 50% relative humidity is cooled...Ch. 6 - Prob. 6.15PCh. 6 - Prob. 6.16PCh. 6 - Air at 90°C and 1.00 atm (absolute) contains 10.0...Ch. 6 - When fermentation units are operated with high...Ch. 6 - When you step out of a shower, the temperature in...Ch. 6 - A fuel cell is an electrochemical device in which...Ch. 6 - Prob. 6.21PCh. 6 - Prob. 6.22PCh. 6 - Prob. 6.23PCh. 6 - Prob. 6.24PCh. 6 - Prob. 6.25PCh. 6 - Prob. 6.26PCh. 6 - Prob. 6.27PCh. 6 - Prob. 6.28PCh. 6 - An air conditioner is designed to bring 10.000...Ch. 6 - Prob. 6.30PCh. 6 - Prob. 6.31PCh. 6 - Prob. 6.32PCh. 6 - A gas stream containing 40.0 mole% hydrogen, 35.0%...Ch. 6 - Prob. 6.34PCh. 6 - In the manufacture of an active pharmaceutical...Ch. 6 - Prob. 6.36PCh. 6 - In the ?nal stage of the manufacturing process...Ch. 6 - Prob. 6.38PCh. 6 - A fuel gas containing methane and ethane is burned...Ch. 6 - A mixture of propane and butane is burned with...Ch. 6 - An important parameter in the design of gas...Ch. 6 - A liquid stream consisting of 12.5 mole% n-butane...Ch. 6 - Nitric acid is a chemical intermediate primarily...Ch. 6 - Prob. 6.44PCh. 6 - Sulfur trioxide (SO3) dissolves in and reacts with...Ch. 6 - State whether you would use Raoult’s law or Henrys...Ch. 6 - A gas containing nitrogen, benzene, and toluene is...Ch. 6 - Prob. 6.48PCh. 6 - Prob. 6.49PCh. 6 - A conelation for methane solubility in...Ch. 6 - Prob. 6.51PCh. 6 - The constituent partial pressures of a gas in...Ch. 6 - Prob. 6.53PCh. 6 - Prob. 6.54PCh. 6 - Prob. 6.55PCh. 6 - Prob. 6.56PCh. 6 - Prob. 6.57PCh. 6 - Prob. 6.58PCh. 6 - Nitrogen is bubbled through a liquid mixture that...Ch. 6 - Prob. 6.60PCh. 6 - Prob. 6.61PCh. 6 - Prob. 6.62PCh. 6 - The feed to a distillation column (sketched below)...Ch. 6 - Prob. 6.64PCh. 6 - Prob. 6.65PCh. 6 - Prob. 6.66PCh. 6 - Prob. 6.67PCh. 6 - Prob. 6.68PCh. 6 - Prob. 6.69PCh. 6 - Prob. 6.70PCh. 6 - A methanol-water feed stream is introduced to a...Ch. 6 - Prob. 6.72PCh. 6 - In this problem you will use a spreadsheet to...Ch. 6 - Prob. 6.74PCh. 6 - Prob. 6.75PCh. 6 - Prob. 6.76PCh. 6 - Acetaldehyde is synthesized by the catalytic...Ch. 6 - Dehydration of natural gas is necessary to prevent...Ch. 6 - A two-unit process is used to separate H2S from a...Ch. 6 - Prob. 6.80PCh. 6 - Prob. 6.81PCh. 6 - Prob. 6.82PCh. 6 - Prob. 6.83PCh. 6 - A solution containing 100 lbm KNO3/100 Ibm H2O at...Ch. 6 - A 10.0 wt% aqueous solution of sodium chloride is...Ch. 6 - Potassium dichromate (K2Cr2O7) is to be recovered...Ch. 6 - Prob. 6.87PCh. 6 - Prob. 6.88PCh. 6 - Sodium bicarbonate is synthesized by reacting...Ch. 6 - An ore containing 90 wt% MgSO4(H2O and the balance...Ch. 6 - An aqueous waste stream leaving a process contains...Ch. 6 - A solution of diphenyl (MW = 154.2) in benzene is...Ch. 6 - An aqueous solution of urea (MW = 60.06) freezes...Ch. 6 - Prob. 6.94PCh. 6 - Derive Equation 6.54 for the boiling-point...Ch. 6 - Prob. 6.96PCh. 6 - A stream of 5.00 wt% oleic acid in cottonseed oil...Ch. 6 - Benzene and hexane are being considered as...Ch. 6 - Acetone is lo be extracted with n-hexane from a...Ch. 6 - Prob. 6.100PCh. 6 - Prob. 6.101PCh. 6 - Five kilograms of a 30 wt% acetone70% water...Ch. 6 - An aqueous acetone solution is fed at a rate of...Ch. 6 - Prob. 6.104PCh. 6 - Prob. 6.105PCh. 6 - Air at 25°C and 1 atm with a relative humidity of...Ch. 6 - Prob. 6.107PCh. 6 - Prob. 6.108PCh. 6 - Various amounts of activated carbon were added to...
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