BATCH AND CONTINUOUS PROCESS

BATCH PROCESSES: SCHEDULING AND ITS IMPLICATIONS

HEATING REQUIREMENTS

PROCESS CONTROL

POWER REQUIREMENTS

H/D RATIO EFFECT ON AGITATION

IMPELLERS

BAFFLES

MIXING TIME

STORAGE OF FLUIDS

SOLID-SOLID OPERATIONS-MIXING

SOLID-SOLID OPERATIONS-MIXING

LIQUID-SOLID OPERATIONS-Paste and Viscous-Material Mixing

Principles of Food Process Design

Classification of Unit Operations of Food Processing

Food Process Flowsheets

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In the application of Laplace transform variable time is eliminated and a new domain is introduced.

In the modeling of dynamic systems differential equations are solved by using Laplace transform.

Properties of Laplace Transform

The Laplace transform contains no information  about f(t) for t<0. (Since t represents time this is  not a limitation)

Laplace transform is defined with an improper  integral. Therefore the required conditions are

the function f(t) should be piecewise continuous

the integral should have a finite value; i.e., the  function f(t) does not increase with time faster than  e -st decreases with time.

Laplace transform operator transforms a  function of variable t to a function of variable s.  e.g., T(t) becomes T(s)

The Laplace transform is a linear operator.

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Three critical elements for achieving excellent plant performance:

Equipment design + Operation conditions + Process control >> Safe, profitable Plant Operation >>  Use 7 control objectives

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Course Objectives

You will learn about:

 How to run a process/system in a controlled manner

 How to best operate a process plant in which not much is steady state and most of the parameters seem to be changing

 time dependent and develop strategies to operate these processes

 Gain an appreciation for the dynamic behavior of food processes

 Food processes that vary in time, i.e., dynamic systems

 Developing automatic control strategies to operate dynamic

 Feedback/Feedforward/Cascade control of processes–concepts,

 Some of the hardware used in a control system systems safely and economically terminology, methods, and performance

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Modelling and Analysis For Process Control

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