Chemical Engineering April 2012 - 62

Engineering Practice
plant's use of that raw material.
Plant designers can minimize employee
exposure with proper storage
and appropriate transfer equipment,
and by connecting to permanently
mounted piping. These precautions
minimize operator exposure and safety
risks. By simulating the usage of the
chemical in question (such as sulfuric
acid), engineers can determine the
best selection for maximizing worker
safety and minimizing cost. They can
also project scenarios that take into
account changes in cost of materials,
usage rates and labor costs, especially
for non-valued-added steps such as
material transport and vessel transfer.
Without such simulation-generated
data, decisions are made based
upon " rules of thumb " , past practices
or intuitive responses.
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Simulation software
A number of simulation software applications
are available on the market.
A quick Internet search reveals dozens
of packages, each with its own set
of features and benefits. The examples
provided here are based upon chemical-process
and material-flow simulators.
Selection of a simulation package
can be difficult, as each package has
attributes that make it better for one
process than another, and each undergoes
feature enhancements with each
version upgrade. Simulation software
applications provide many opportunities
to test a range of operational and
safety boundaries. They also help to
ensure that equipment specifications,
raw materials inventory, and safety
considerations will enable processing
as required, yet at the most economical
rates. That's how companies can
create better chemistry by design. ■
Edited by Dorothy Lozowski
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Dave Jechura, is a senior
chemical engineer at SSOE
Group (1001 Madison Avenue
Toledo, Ohio 43604; Email:
Dave.Jechura@SSOE.com;
Phone: 419-255-3830; Website:
www.ssoe.com/chemical),
an international engineering,
procurement and construction
management firm. With
over 30 years of experience,
Jechura specializes in chemical process engineering
and industrial wastewater treatment. He is a
professional engineer registered in the states of
Ohio and Mississippi, and holds a B.S.Ch.E. from
the University of Toledo.
62 CHEMICAL ENGINEERING WWW.CHE.COM APRIL 2012
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Chemical Engineering April 2012

Table of Contents for the Digital Edition of Chemical Engineering April 2012

Contents
Chemical Engineering April 2012 - Cover1
Chemical Engineering April 2012 - Cover2
Chemical Engineering April 2012 - Contents
Chemical Engineering April 2012 - 2
Chemical Engineering April 2012 - 3
Chemical Engineering April 2012 - 4
Chemical Engineering April 2012 - 5
Chemical Engineering April 2012 - 6
Chemical Engineering April 2012 - 7
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Chemical Engineering April 2012 - 9
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Chemical Engineering April 2012 - Cover3
Chemical Engineering April 2012 - Cover4
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