Chemical Engineering September 2020 - 28

Hoeller Electrolyzer
FIGURE 3. These compact electrolyzer
units are designed for
installation in challenging locations,
such as the head of a wind
turbine, for streamlined
energy storage
ers are looking
Nel has
under -
taken a
variety of
pilot-scale
tests for
different
H2 applications,
helping
sites
to
transition
from gray
to green
H2. " Many,
if not all,
major ammonia
produc
-
at some level
of
CIC-10307 halfp page ad.qxd 3/25/07 6:19 PM Page 1
electrolysis testing. We have a windto-ammonia
project in Minnesota
that has been running for several
years and many more in the pipeline.
We've also sold a number of
large-scale alkaline electrolyzers for
production of ethylene and sugar
alcohols, both of which consume
large amounts of H2 in the process, "
says Bow.
Nel Hydrogen is one of several recipients
of funding under the H2@
Scale initiative funded by the U.S.
Department of Energy (DOE; Washington,
D.C.; www.doe.gov), through
the Office of Energy Efficiency and
Renewable Energy's (EERE) Hydrogen
and Fuel Cell Technologies Office
(HFTO). In July, $64 million in funding
was awarded to 18 projects supporting
H2@Scale's goals of advancing
the U.S. hydrogen economy. Nearly
$15 million of the most recent round
of funding went to projects focused
specifically on manufacturing electrolyzers.
" An advantage of electrolyzers
is their suitability with intermittent
renewable-power sources, such as
wind and solar. Instead of curtailing
power, electrolyzers can be used to
make H2 for either energy storage or
for other value-added end-use applications,
such as manufacturing
chemicals or steel, " explains HFTO
director Sunita Satyapal.
For electrolyzers, H2@Scale's main
goals involve improving efficiency and
durability while reducing overall costs.
As electrolyzer technologies have progressed,
Satyapal points out a trend
toward more holistic and collaborative
development projects. " Instead of
looking at specific components, like
catalysts or membranes, much of the
current work deals with the integration
of materials and manufacturing processes,
and how we might be able to
integrate them to be manufacturable
at scale, " she says. " An example of
a unique area we have been funding
is quality-control methods. Ideally,
we are going to ramp up electrolyzers
to gigawatt scale, the components
wouldn't be manufactured in
batch processes, so we are looking
at higher-throughput continuous processes,
such as roll-to-roll, as well
as high-speed inspection over largePLASTIC
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28
ChemiCal engineering www.Chemengonline.Com September 2020
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Chemical Engineering September 2020

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