Part Load Behaviour of Power Plants with a Retrofitted Post-combustion CO2 Capture Process

Roeder, Volker; Kather, Alfons

doi:10.1016/j.egypro.2014.07.024

Cited by 19 publications

(9 citation statements)

References 3 publications

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“…Only the lean loadings at regular part load operation at 40% and 50% GT load drop slightly compared to the design value. This is line with Roeder and Kather (2014) and Oh and Kim (2018) and a consequence of the changing reboiler and desorber conditions. Rich loading across all GT loads and part load strategies remains unchanged.…”

Section: Solvent Loadings and L/g Ratiosupporting

confidence: 82%

“…The approach taken in this study for optimally controlling the capture plant at regular part load operation (i.e. no additional regeneration of stored rich solvent) is consequently based on Oh and Kim (2018) and Roeder and Kather (2014). Effectively, reboiler temperature is governed by decreasing steam pressures and saturation temperatures at part load on the steam side of the reboiler and by the heat requirements on the solvent side of the reboiler.…”

Section: Part Load Strategymentioning

confidence: 99%

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Operating flexibility of natural gas combined cycle power plant integrated with post-combustion capture

Spitz

González-Díaz

Chalmers

et al. 2019

International Journal of Greenhouse Gas Control

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Highly flexible, low-carbon electricity generation with gas-fired power stations with CO 2 capture addresses the challenges of balancing variable renewable electricity supply in low carbon electricity systems. This detailed technical assessment of flexible CO 2 capture plant operation at natural gas combined cycle power stations with post-combustion CO 2 capture examines the operating strategies of capture plant bypass and interim solvent storage. We show that solvent storage allows expanding the operating envelope of gas fired CCS power stations by +/-10%. Further we demonstrate that electricity and CO 2 output can be decoupled for up to 3 hours with approx. 6000 m 3 of additional solvent inventory for the purpose of reducing the CO 2 flow variability in downstream transportation and storage systems, mitigating potentially deleterious injection well effects. 1hr of solvent storage operation at full load can be regenerated in as fast as 2.1hrs during continuous operation of the CCS power plant by choosing a controlled steam extraction strategy from the combined cycle and thus throttling the low pressure turbine. The electricity output penalty associated with the delayed regeneration of solvent ranges from 420-450kWh/tCO 2 with this strategy, which compares to 380kWh/tCO 2 for immediate regeneration at full load design conditions. By deploying a novel variable speed drive integrally geared compressor model, we find that, unlike previously thought, an uncontrolled steam extraction strategy, referred as a floating steam extraction strategy, can lead to choking of the CO 2 compressor during additional solvent regeneration. A pre-compression stage would be necessary under this extraction strategy to restore feasible operation of the main CO 2 compressor, and makes this strategy more complex to implement. When decreasing the desorber pressure at part-load care must, therefore, be taken to respect the operating limits of the compressor. To assist with the use of rigorous plant performance data in wider electricity system models, correlations for key performance parameters of NGCC-CCS power plants at varying load, with capture bypass and additional solvent regeneration are provided.

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Section: Solvent Loadings and L/g Ratiosupporting

confidence: 82%

Section: Part Load Strategymentioning

confidence: 99%

Operating flexibility of natural gas combined cycle power plant integrated with post-combustion capture

Spitz

González-Díaz

Chalmers

et al. 2019

International Journal of Greenhouse Gas Control

View full text Add to dashboard Cite

show abstract

“…Saat ini kendala utama dari teknologi ini adalah kebutuhan energi yang sangat tinggi terutama pada proses regenerasi Amine (Elias et al, 2018). Roeder dkk membuat model PLTU batubara 600 MW dan simulasi absorbsi kimia dengan MEA (Roeder & Kather, 2014). Hasilnya menunjukan bahwa efisiensi pembangkit turun 10.7% pada beban 100%.…”

Section: Absorbsi Kimiaunclassified

Tinjauan Metode Penangkapan Karbon untuk PLTU Batubara

Prakoso

Windarta

2021

J. En. Baru & Terbarukan

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Sektor energi adalah kontributor utama dalam emisi karbon di Indonesia. Dengan meningkatnya kebutuhan energi, maka emisi karbon dari sektor ini juga meningkat tiap tahunnya. Sampai tahun 2023 akan ada lebih dari 15 GW PLTU Batubara baru yang mulai beroperasi. Lambatnya perkembangan energi bersih yang ekonomis membuat Indonesia harus mulai mempertimbangkan teknologi lain untuk menurunkan emisi karbon. Salah satu yang layak dipertimbangkan adalah teknologi penangkapan karbon. Penelitian ini mengulas metode – metode penangkapan karbon yang ada juga kelebihan dan kekurangannya. Metode penangkapan paska pembakaran dianggap layak untuk dipertimbangkan karena lebih mudah diterapkan pada pembangkit yang sudah ada. Penelitian lebih jauh diperlukan untuk menurunkan kebutuhan energi dan biaya dari teknologi penangkapan karbon.

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“…Such calculations for the UK power network require the efficiency of each generator type to determine fuel consumptions and corresponding carbon amount, but the efficiency of each generator is not a fixed figure. For instance, the part-load efficiency of thermal power plants is often lower than its rating value (Roeder and Kather, 2014). Secondly, in the UK, there is imported electricity from other countries, e.g., France and Ireland, whose emission factors are difficult to calculate at high temporal resolution, i.e., half-hourly level or daily level (Cleary et al, 2016) .…”

Section: Supplemental Informationmentioning

confidence: 99%

Arranging university semester date to minimize annual CO2 emission: A UK university case study

Sun

Xiang

et al. 2021

iScience

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Existing methods of reducing carbon emissions on campus often require substantial investment, and the potential opportunities for carbon dioxide and energy savings in universities with existing infrastructure have not been considered in much detail. This work fills this gap by considering an indirect and soft demand response strategy, i.e., semester arrangement. To identify the optimal operational strategy of a realistic campus-level multi vector energy system (MES) in Scotland based on CO 2 emissions, an original tool is presented. Two conclusions can be drawn safely from the case study. Firstly, changing the operational mode of the university could significantly reduce CO 2 emissions. Secondly, considering the difference between average emission factor (AEF) and marginal emission factor (MEF) in the power grid, the different operational modes will bring different electricity/heat demands and also affect carbon emissions. The work opens up a new perspective for worldwide university operators who are considering reducing CO 2 emissions.

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Part Load Behaviour of Power Plants with a Retrofitted Post-combustion CO2 Capture Process

Cited by 19 publications

References 3 publications

Operating flexibility of natural gas combined cycle power plant integrated with post-combustion capture

Operating flexibility of natural gas combined cycle power plant integrated with post-combustion capture

Tinjauan Metode Penangkapan Karbon untuk PLTU Batubara

Arranging university semester date to minimize annual CO2 emission: A UK university case study

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