Chemical Engineering June 2022 - 13

Evonik Industries
H2 in the blended natural-gas
stream from the main components
of methane and higher
hydrocarbons. The membrane
material
is particularly
FIGURE 2. More robust membranes are becoming essential as we move toward a sustainable gas economy
because they are needed for applications in hydrogen extraction and other green gas processes. Evonik is developing
membranes for these types of applications
develop hydrogen-extraction technology,
which enables existing infrastructure
to transport hydrogen next
to natural gas and extract the hydrogen
where it is needed at a grade
that is required by the customer. "
This technology is a combination
of Evonik's membrane technology
and Linde's pressure-swing adsorption
(PSA) technology. Linde recently
launched a full-scale pilot plant in
Dormagen, Germany, to demonstrate
how hydrogen can be separated
from natural gas streams. The
process is a key enabler for scenarios
in which H2 is blended with natural
gas and transported via natural
gas pipelines. The blended gas can
consist of between 5 and 60% H2.
Membranes are then used to extract
H2 from these natural gas streams
at the point of consumption. The
resulting hydrogen has a concentration
of up to 90%. When further
processed with Linde's PSA technology,
a purity of up to 99.9999%
can be achieved.
The high-performance membrane
package unit is based on a robust
polymer developed by Evonik. It
consists of highly selective hollow
fibers that efficiently separate the
robust,
as natural gas contains a host
of other substances that can
influence the separation performance
of membranes.
Evonik is also working on innovative
polymer membranes for
water electrolysis that can help make
green H2 more affordable. Green H2,
which is critical for use as a carbonfree
fuel for industry and transportation
and as a raw material for the
chemical industry, is produced from
water by electrolysis using electricity
generated
from renewable
resources. It is still much more expensive
than conventional H2, which
is generally obtained from steammethane
reforming, a process that
releases CO2. In addition to sufficient
low-cost energy generated from renewables,
investment in an electrolyzer
is a key factor in cost-efficient
KNOW YOUR
DEMAND.
Kaeser's Air Demand Analysis (ADA)
offers precise consumption profiles of your
compressed air system that determines
your specific needs. The Kaeser team of
specialists will calculate optimal efficiency
for energy cost savings and increased
productivity through a more stable supply
of compressed air.
TAKE THE NEXT STEP.
EACH INFORMATION PACKED PDF ARTICLE
includes graphs, charts, tables, equations and columns
on the full chemical engineering processes you deal with
on a daily basis. This is the tool you will come to rely on,
referring back to the information again and again with
just the click of a mouse.
Receive full access today by visiting
www.chemengonline.com/magazine/facts-at-your-fingertips
24670
For details visit adlinks.chemengonline.com/82582-05
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM
JUNE 2022
13
us.kaeser.com/ada
877.788.1829
ACCESS
RECEIVE FULL
to ALL of Chemical Engineering's Facts at Your
Fingertips articles in one convenient location.

http://adlinks.chemengonline.com/82582-05 http://www.chemengonline.com/magazine/facts-at-your-fingertips http://us.kaeser.com/ada http://WWW.CHEMENGONLINE.COM

Chemical Engineering June 2022

Table of Contents for the Digital Edition of Chemical Engineering June 2022