Chemical Engineering December 2018 - 22

deal with emergencies in a shorter
period of time. "
Corporate goals. Modern simulation
tools can also help processors
achieve corporate goals, including energy
efficiency, sustainability and profitability.
" Simulation was created for
the purpose of increasing efficiencies,
so it makes sense that it is used for
corporate goals such as sustainability
and energy efficiency, " says Stephane
Dechelotte, CEO at ProSim (Labege,
France; www.prosim.net). " Advances
in software, such as better thermodynamic
models and those specifically
designed to assist with energy
evaluations, allow better simulations
of energy estimation and profitability
calculations. Today's users require
models that are predictive and that
cover a wide range of mixtures, temperatures
and pressure conditions, so
thermodynamic models are a critical
component to running simulations
that achieve corporate goals, such
as energy efficiency and the impact it
has on yield, he says " (Figure 4).
Chemstations's Brown agrees that
simulation is finding greater application
in this area. " Companies will do an
analysis to see where they can boost
profitability and this is almost always
tied to energy consumption. However,
the same company may also consider
energy efficiency a corporate social
goal, " he says. " We've seen them use
simulation to perform a multi-objective
optimization where they have the first
objective as profit and the second
as the societal or environmental impact.
They can use the simulation to
look at how they may want to operate
the facility and examine the results
and decide, on a corporate level, with
input from various engineering disciplines,
where to balance profitability
with social or environmental impacts.
They can find the overall optimum that
works for their company. "
These same types of simulations
can be applied to almost any corporate
goal, says Ansys's Haidari. " The
process industry is becoming very interested
in sustainability and as such
,is looking at things like resource scarcity,
emissions reduction and pollution
control, shifting to a low-carbon
economy and other social aspects of
processing, " he says. " Today's easier-to-use
and advanced simulations
allow processors to perform studies
around sustainability goals such as
waste treatment, improving reactions
to reduce the amount of heat created,
taking wasted resources and
putting them back into the process,
reducing emissions, improving energy
performance and reducing or
recycling water or other resources
used in the process. "
What it comes down to is that today's
simulators are capable of doing
more than those of the past and they
are able to do it dynamically and digitally,
while sharing accurate and up-todate
information with everyone in the
plant who might need it. " Safety issues,
energy issues, control issues, reliability
issues...all these issues can be
solved if the engineers can communicate
amongst themselves in the same
language and that language is simulation, "
states Chemstations's Brown. n
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Chemical Engineering December 2018

Table of Contents for the Digital Edition of Chemical Engineering December 2018
