Introduction To Reactor Design

Question 1

For various reactor types this equation simplifies one way or another, and the resultant expression when integrated gives the basic _________________ for that type of unit.

Answer 1

Performance Equation

Question 2

Enumeration.
Special Cases of Symbols and Relationship between Ca and Xa.

Answer 2

1. Constant Density Batch and Flow Systems
2. Batch and Flow Systems of Gases of Changing Density but with T and pi Constant.
3. Batch and Flow Systems for Gases in General (varying p, T, pi)

Question 3

Reactant basis for determining the conversion.

Answer 3

Key Reactant

Question 4

This includes most liquid reactions and also those gas reactions run at constant temperature and density.

Answer 4

Special Case 1. Constant Density Batch and Flow Systems

Question 5

Here the density changes because of the change in number of moles during reaction. In addition, we require that the volume of a fluid element changes linearly with conversion.

Answer 5

Special Case 2. Batch and Flow Systems of Gases of Changing Density but with T and pi Constant

Question 6

One reactant, the key component (A), is chosen as the basis for determining the conversion.

Answer 6

Special Case 3. Batch and Flow Systems for Gases in General (varying p, T, pi)

Question 7

All reactants added at one time, composition changes with time.

Answer 7

Batch Reactor

Question 8

Ideal for small-scale experimental studies.

Answer 8

Batch Reactor

Question 9

Simple and needs little supporting equipment.

Answer 9

Batch Reactor

Question 10

Used when small amounts of material or expensive materials are to be treated.

Answer 10

Batch Reactor

Question 11

No accumulation of material in reactor, no change in composition of the feed or exit stream; composition at any point unchanged with time.

Answer 11

Steady-state Flow Reactor

Question 12

Ideal for industrial purposes when large quantities of material are to be processed and when the rate of reaction is fairly to extremely high.

Answer 12

Steady-state Flow Reactor

Question 13

Supporting equipment are needed in this reactor

Answer 13

Steady-state Flow Reactor

Question 14

The composition and/or quantity of material in system changes with time.

Answer 14

Semibatch Reactor

Question 15

It offers good control of reaction speed because the reaction proceeds as reactants are added.

Answer 15

Semibatch Reactor

Question 16

True or False.
Rate expressions are obtained to help predict the size of reactors needed to produce a given amount of product.

Answer 16

True

Question 17

True or False.
The rate equation for a reacting component i is an intensive measure, and it tells how rapidly component i forms or disappears in a given environment as a function of the conditions.

Answer 17

True