Chapter 9, Problem 9.29P

Interpretation Introduction

(a)

Interpretation:

The number of moles of every species at outlet should be proved as follows on considering the basis of one mole of feed.

${\text{n}}_{\text{A}}={\text{x}}_{{\text{A}}_{\text{0}}}\left(1-f_A\right)$

${\text{n}}_{\text{B}}={\text{x}}_{B_{\text{0}}}-f_A{\text{x}}_{{\text{A}}_{\text{0}}}+{\text{n}}_{\text{D}}$

${\text{n}}_{\text{C}}={\text{x}}_{{\text{A}}_{\text{0}}}{\text{f}}_{\text{A}}{\text{Y}}_{\text{C}}$

${\text{n}}_{\text{D}}=\frac{{\text{x}}_{\text{A0}}{\text{f}}_{\text{A}}{\text{-n}}_{\text{C}}}{\text{2}}$

$n_I=x_{I_0}$

Concept introduction:

Mole fraction $\left(y_i\right)$ of any component is given by

$y_i=\frac{n_i}{\sum n_i}$ ...... (2)

Here, $n_i$ is the moles of component $i$ and $\sum n_i$ is the total moles of all the components present in the mixture.

Interpretation Introduction

(b)

Interpretation:

The spreadsheet used to perform material and energy balance calculations for a basis of 1.00 mol feed should be written.

Concept introduction:

The amount of heat transferred is

$\begin{array}{l}Q\text{}=\sum _{out}n{\hat{H}}_i-\sum _{in}n{\hat{H}}_i\\ \end{array}$

$\sum _{out}n{\hat{H}}_i$ is the heat of formation of product.

$\sum _{in}n{\hat{H}}_i$ is the heat of formation of reactant.

Interpretation Introduction

(c)

Interpretation:

The value of heat transfer for the reactor conditions shown on spreadsheet by using program for the temperature ${\text{175}}^{\circ }\text{C}$ of should be calculated.

Concept introduction:

The amount of heat transferred is

$\begin{array}{l}Q\text{}=\sum _{out}n{\hat{H}}_i-\sum _{in}n{\hat{H}}_i\\ \end{array}$

$\sum _{out}n{\hat{H}}_i$ is the heat of formation of product.

$\sum _{in}n{\hat{H}}_i$ is the heat of formation of reactant.

The calculation of amount of heat transferred is calculated using the number of moles and enthalpy for inlet and outlet.

Interpretation Introduction

(d)

Interpretation:

The effect of different values of ${\text{T}}_{\text{P}}$, ${\text{f}}_{\text{A}}$ and ${\text{Y}}_{\text{C}}$ on Q should be summarized and also explain the reason for correctness of result.

Concept introduction:

The amount of heat transferred is

$\begin{array}{l}Q\text{}=\sum _{out}n{\hat{H}}_i-\sum _{in}n{\hat{H}}_i\\ \end{array}$

$\sum _{out}n{\hat{H}}_i$ is the heat of formation of product.

$\sum _{in}n{\hat{H}}_i$ is the heat of formation of reactant.

The calculation of amount of heat transferred is calculated using the number of moles and enthalpy for inlet and outlet.