| Advertorial feature IDCC – a realistic option, or just another hype?
Integrated Decarbonisation Combined Cycle (IDCC) combines power generation using gas turbine combined cycle power plant technology with the processes required for CO2
separation, transport and permanent storage.
In its Sustainable Development Scenario, the International Energy Agency estimates that carbon capture, utilisation, and sequestration (CCUS) will play a significant role in the future mix of technologies to reduce CO2
emissions from the power and energy-intensive process industries. Given
the order of magnitude of current CO2 emissions for power and heat generation, options for utilization are limited, but safe permanent geological storage is a common engineering practice available today, and sufficient storage capacity is present e.g. in former natural gas reservoirs that had been gas-tight for millions of years before depletion by humans.
Technically, the separation of CO2 from a
mixture of gases is also well understood and applied on large scale in the chemical industry, currently mainly by absorption with amine solutions, but also alternative processes such as temperature swing adsorption are being investigated.
Since the regeneration of the sorbent in a desorber unit which produces a rich CO2
stream for sequestration requires heat input, there is a potential for optimizing the integration with the power plant.
Pre- or post-combustion, that is the question?
The CO2
that is produced from natural gas by steam methane reforming (SMR), or from the flue gas after its utilization in the combined cycle power plant. The latter has the benefit that existing power plants can be used with very minor modifications, while switching the gas turbine to enriched or pure H2
separation could take place either prior to combustion from a gas mixture of H2
and CO2
consider the interplay between all processes that are involved. Analysing the actual loss of production caused by power and heat demand of all CCUS equipment and its ability to operate under realistic demand-driven conditions will provide the information needed to make the right decisions.
ENEXSA is an Austrian expert company concentrating on consultancy and software systems for the power industry. We co- develop the EBSILON®
Professional heat
partial pressure) and to require a much smaller and thus less expensive plant for carbon capture.
Transport and storage are basically the same for both options, with minor differences due to achievable separation rates and operating conditions.
Which way to go? As always, it’s a techno-economic decision.
Finding the optimal solution requires a system-wide analysis, because it must
If you are interested in simulating IDCC, please contact ENEXSA!
fuel may entail modifications not only to the gas turbine but also its peripherals and the flue gas path. The pre-combustion carbon capture however is expected to be more effective (due to higher CO2
balance software which covers the entire spectrum of power generation processes from traditional fossil technology to renewables, and we include gas turbine performance data with H2
fuel based on
OEM information. Ongoing development focusses on integrating carbon capture technologies with sufficient level of detail to expand the power plant simulation for the physical and chemical processes of CCUS in line with latest research, but practically enough for engineers.
Diligent considerations are good, but comprehensive simulations are better.
Energy Expert Sof tware Applicat ions
Contact Information: Josef Petek, Manager Commercial Operations, ENEXSA GmbH, Parkring 18, 8074 Raaba-Grambach, Austria
www.enexsa.com
josef.petek@
enexsa.com
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