HP March 2022 eBook—Energy Transition - 27
Process Optimization
ing the natural gas feedstock price) from
reduced compression duties and more
steam generation for internal power. Gas
POX technology consumes 6% more natural
gas, but this is offset by power generation
from the excess steam.
The proprietary blue H2
processa is
an end-to-end lineup that maximizes the
integration of the gas POX and solvent
technologies. Compared with an ATR
unit, modeling shows (based on the parameters
in TABLE 1) that a lineup producing
500 tpd of pure H2
would have:
* $30 MM/yr lower OPEX
* 35% less power import
* > 99% CO2
capture
* 10%-25% lower levelized cost of H2
The gas POX-solvent process is the
best option for large-scale blue H2
.
projects.
FIG. 6 shows the principle advantages
of integrating it with other proprietary
and open-source technologies.
The choice between a methanator or
a pressure-swing absorption (PSA) unit
for the H2
the required H2
purification step depends on
purity. For example,
a PSA unit is necessary to achieve the
> 99.97% purity required for the H2
used
in fuel cells. The offgas is predominantly
H2
, with trace containments such as CO,
CO2 and nitrogen. In the ATR process,
this offgas is typically burned to preheat
the natural gas, which produces direct
CO2
emissions.
In a methanator, the purity of the final
H2 is lower (> 98%, depending on the
feed gas properties). However, it avoids
the direct CO2
lost via the PSA offgas. Consequently,
it reduces natural gas consumption for
the same H2
production. In addition, a
purity requireis
methanator
is commonly applied in industry,
as it satisfies the H2
ments of most industrial consumers.
History of gas POX oxidation technology.
The gas POX technologyb
mature and " low-carbon, " which makes
it eligible for government funding. It has
a long history of development and usage.
For example, research into oil gasification
was being conducted in Amsterdam,
the Netherlands as early as 1956.
Today, the proprietary gas POX technologyb
has
more than 30 active residue
and gas gasification licensees, and more
than 100 gasifiers using the technology
FIG. 5. The cost of gas POX technology relative to ATR.
Hydrocarbon Processing | JUNE 2021 | HydrocarbonProcessing.com
emissions from burning
is not
the PSA offgas. The main advantage of
choosing a methanator is that H2
FIG. 4. Relative capital investment comparison between gray and blue H2
gas POX technology.
via SMR and
FIG. 3. Relative CO2 intensity and cost of gray and blue H2
capture, and blue H2 via proprietary gas POXa and pre-combustion capture solventd
via SMR with pre- and post-combustion
technologies.
http://www.HydrocarbonProcessing.com
HP March 2022 eBook—Energy Transition
Table of Contents for the Digital Edition of HP March 2022 eBook—Energy Transition
Contents
HP March 2022 eBook—Energy Transition - Cover1
HP March 2022 eBook—Energy Transition - Cover2
HP March 2022 eBook—Energy Transition - 3
HP March 2022 eBook—Energy Transition - Contents
HP March 2022 eBook—Energy Transition - 5
HP March 2022 eBook—Energy Transition - 6
HP March 2022 eBook—Energy Transition - 7
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HP March 2022 eBook—Energy Transition - Cover3
HP March 2022 eBook—Energy Transition - Cover4
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