## Content of Essential Process Control for Chemical Engineers by Dr. Bruce Postlethwaite

**Introduction**Why do we need control?

**Instrumentation**

What is an instrument?

Factors to be considered in selecting an instrument

Instruments for temperature measurement

Pressure measurement

Flow measurement

Level measurement

Chemical composition

**Communication signals**

Types of communication signal

**Final control elements**

Control valves

Control valve sizing

**Diagrams for process control systems**

Process flow diagrams (PFDs)

Piping and instrumentation diagrams (P&IDs)

**Inputs and outputs in control systems**

Process inputs

Process outputs

Processes in control engineering

An example of variables and processes

**Introduction to feedback control**

Feedback control and block diagrams

Positive and negative feedback

Control loop problems

Direction of control action

Controller hardware

**Introduction to steady-state and dynamic response**

Steady-state gain

Dynamic response

**Dynamic modelling**

Laplace transforms

Derivation of basic transforms

Solution of differential equations using Laplace transforms

Transfer functions

Block Diagrams

Block diagram algebra

Solutions of responses for high-order systems

Forming dynamic models

**Analytical solution of real-world models**

Types of non-linearity

Linearization of non-linear equations

Simplifying expressions through deviation variables

Procedure for simplifying and solving a non-linear model

Putting it all together – a reactant balance for a CSTR

**PID Controller algorithm**

Really simple feedback controller – on-off

Proportional-integral-derivative (PID) control

Proportional only control

Integral only control

Derivative action

Proportional-Integral (PI) control

PID control response

Other forms of PID algorithm

**Control system analysis**

Analysis of a typical feedback control system

The PID algorithm as a transfer function

Analysis of proportional control of a first-order process

Example of a first order process under proportional control

Example of a second-order process under proportional control

Analysis of integral control of a first-order process

**Controller tuning**

What needs to be done to tune a PID Controller?

How do you decide what is a good controller performance?

Some methods of controller tuning

Control loop health monitoring

Control loop diagnostics

**More advanced single-loop control arrangements**

Cascade control

Selective or auctioneering control

Override control

Ratio control

Feedforward control

**Design of control systems**

Control envelope

Multivariable processes

How to determine the number of controlled variables

Plantwide mass balance control

**Control system architecture**

The effect of technology on process plant control rooms

Human factors in control room displays

Distributed control systems

Safety Instrumented Systems

## PDF Free Download | Content of Essential Process Control for Chemical Engineers by Dr. Bruce Postlethwaite

This book is based on the course notes from the introductory process control class at Strathclyde University in Glasgow, Scotland. This course is itself based on the IChemE model-curriculum for chemical engineers and covers the material that ALL chemical engineers are supposed know. The IChemE curriculum was drawn up by a team of industrialists and academics, led by Professor Jon Love, in response to a recognized need for chemical engineers to be taught a more industrially relevant course. This book isn’t a traditional academic textbook in that there are no references anywhere in the text.

The main reason for this is that the material has been gathered from many different sources after a working lifetime of teaching in the area and trying to identify an original source is impossible. I have included a bibliography for readers who wish to look further into the subject.

**Download Essential Process Control for Chemical Engineers by Dr. Bruce Postlethwaite in free pdf format.**