H2Tech - Q4 2021 - 33

GREEN HYDROGEN PRODUCTION
The approach: A systems design approach
was pursued that would result in
significant reduction of the amount of
reject water from the WTP, along with
the reduction of the size of the evaporation
pond, or preferably its elimination.
Reducing the reject water required
close interaction with water treatment
specialists and vendors. It is critical to
understand the characteristics of the
water produced from the aquifer, so the
aquifer water was retested. The result
from the water analysis was used to optimize
the design of the WTP and minimize
the amount of reject water, eliminating
two-thirds of the amount of reject
water initially estimated.
Rather than sending the reject water
to an evaporation pond, the reject water
was also formulated to meet the local
Australian regulatory requirements
of total dissolved solids (TDS), which
could enable its discharge to ground water.
Several options for recycling water
are being evaluated.
The availability of freshwater to produce
demineralized water may not always
be possible in some regions where
freshwater is a scarce resource, such as
the Middle East. Other water sources,
such as seawater, will require more expensive
treatment to achieve the water
quality needed for electrolyzer units,
leading to higher CAPEX and higher
utility and energy demands. The disposal
of reject water from seawater demineralization
can also be subject to stringent
environmental regulations, requiring
detailed studies focused on its impact on
the marine environment. This should be
considered when developing green H2
projects in such regions.
Part 2. Part 2 of this article, to be published
in the Q1 2022 issue, will examine
the challenges and solutions for largescale
H2
and process safety considerations. It will
also examine cost considerations for the
deployment of green H2
worldwide.
NOTES
a Petrofac
LITERATURE CITED
1
International Renewable Energy Agency (IRENA),
" Hydrogen from renewable power: Technology
outlook for the energy transition, " 2018, online:
https://www.irena.org/-/media/Files/IRENA/
Agency/Publication/2018/Sep/IRENA_
FIG. 7. Site 3D model of evaporation pond and natural lake.
Hydrogen_from_renewable_power_2018.pdf
2
DNV, Phast, Process hazard analysis software,
online: www.dnv.com/software/services/phast/
phast-our-service.html
3
Hydrogen Council, " Path to hydrogen
competitiveness: A cost perspective, " January
2020, online: https://hydrogencouncil.com/
wp-content/uploads/2020/01/Path-to-HydrogenCompetitiveness_Full-Study-1.pdf
4
Wood
Mackenzie, " Green energy production:
Landscape, projects and costs, " 2019, online:
https://www.woodmac.com/our-expertise/focus/
transition/green-hydrogen-production-2019/
5
International Energy Agency (IEA), " The Future
of hydrogen-Seizing today's opportunities, " 2019,
online: https://www.iea.org/reports/the-future-ofhydrogen
6
Scottish
Government, " Scottish hydrogen
assessment, " December 2020, online: https://www.
gov.scot/binaries/content/documents/govscot/
publications/research-and-analysis/2020/12/
scottish-hydrogen-assessment-report/documents/
scottish-hydrogen-assessment/scottish-hydrogenassessment/govscot%3Adocument/scottishhydrogen-assessment.pdf
CHET
BILIYOK is a Chartered
Process Engineer with 16 yr of
experience in process design,
project execution, technical
consultancy and R & D across the
energy industry. He has drawn on
previous experience working in oil
storage, equipment supply chain
and gas to deliver projects in renewable/low carbon
H2, carbon capture, utilization and storage (CCUS)
and waste-to-fuels, recently serving as the Process
Lead during FEED of the Arrowsmith Green
Hydrogen Project. Dr. Biliyok has authored more than
20 peer-reviewed journal articles and presented his
work at major international conferences. He is based
in Petrofac's Woking, UK office as the Technical
Director of Petrofac's New Energy Services and
seeks to deliver solutions that enable organizations
to thrive in a low-carbon energy future.
MICHAEL CZARNECKI is a
Chartered Chemical Engineer
with 17 yr of experience working
in process design and project
engineering management across
the energy industry. He works as a
Study Manager supporting Petrofac's Engineering
& Consultancy services team in Petrofac's Woking,
UK office. Mr. Czarnecki recently project-managed
the Arrowsmith Green Hydrogen FEED Project.
This project involved the integration of wind turbine
and solar PV technology to electrolyze H2
from raw
water. He has a keen interest in low-carbon projects
and new technologies and is applying his experience
of working within the onshore and offshore oil and
gas sectors to new energy projects.
AHMED DAR has more than
25 yr of engineering experience
in the oil and gas, petrochemicals
and sulfur management sectors.
He has worked on a variety of
international projects for major
engineering contractors and
operating companies. His experience encompasses
all project phases, from project proposals to
conceptual design, feasibility studies and FEED to
detailed engineering. He is a subject matter expert
in sulfur recovery unit design, operations,
troubleshooting and performance optimization.
Mr. Dar joined Petrofac in 2018 and works as a
Consultant Process Engineer supporting Petrofac's
Engineering & Consultancy team in the Woking, UK
office. He recently provided process engineering and
design support on the Arrowsmith Green Hydrogen
FEED project and is interested in renewable energy
technologies and carbon capture and sequestration.
Mr. Dar earned an MS degree in advanced chemical
engineering and is a Chartered Engineer.
STEPHEN J. GAULD is the
Managing Director at Infinity
Blue Energy, based in Perth,
Australia. He has more than 20 yr
of experience in the oil and gas
sector working for some of the
largest global service companies
and operators, such as Baker Hughes GE, ENI,
ExxonMobil, Chevron, RocOil and Woodside.
Mr. Gauld is very experienced in managing project
delivery and cash flow and gained a wealth of
experience field testing and developing state-ofthe-art
rotary steerable and logging while drilling
technology. In the last 5 yr, he has delivered several
renewable energy projects from design, civils and
construction through commissioning and now
leads Australia's first commercial-scale green H2
plant north of Perth.
H2Tech | Q4 2021 33

H2Tech - Q4 2021

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