Simulation of an oxygen membrane-based combined cycle power plant: part-load operation with operational and material constraints

Colombo, Konrad Eichhorn; Bolland, Olav; Хартон, В.В.; Stiller, Christoph

doi:10.1039/b910124a

Cited by 16 publications

(25 citation statements)

References 54 publications

(75 reference statements)

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“…The model of the mixedconducting membrane module is briefly presented in the Appendix. Additional modelling and simulation assumptions can be found in previous works [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…After further cleaning steps, the CO 2 is compressed and transported to a storage site as indicated in Fig. 1 (the analysis including the bottoming steam cycle and the CO 2 conditioning processes can be found in [12]). The process flowsheet in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…For sound operation of the membrane-based GTPP (Fig. 3) additional issues must be addressed to maintain the stability of critical process components [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Due to the lack of available data, degradation of the catalytic combustors in the membrane reactor [12] was also neglected.…”

Section: Introductionmentioning

confidence: 99%

“…Taking into account the membrane operating conditions that are necessary for the GTPP [6,[12][13][14], the most critical factors related to the gas composition include high partial pressures of CO 2 , H 2 O and O 2 . The degradation rates associated with these factors were assessed experimentally, as described below.…”

Section: Introductionmentioning

confidence: 99%

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Simulation of a mixed-conducting membrane-based gas turbine power plant for CO2 capture: system level analysis of operation stability and individual process unit degradation

Colombo

Хартон

Viskup

et al. 2010

J Solid State Electrochem

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A gas turbine power plant for CO 2 capture, based on oxygen-permeable membranes with mixed ionicelectronic conductivity, was analysed with respect to longterm stability by means of numerical simulation. Due to the attractive transport and physicochemical properties of mixed-conducting La 2 NiO 4+δ , this nickelate was selected as a prototype membrane material for this application. Experiments showed very slow degradation of La 2 NiO 4+δ membranes at oxygen chemical potentials close to atmospheric conditions, which are associated with kinetic demixing and other microstructure-related factors. Interaction with CO 2 in the intermediate temperature range also leads to lower oxygen permeation, whilst increasing oxygen pressure may cause partial phase decomposition and microstructural changes, thus again limiting the range of possible operation conditions. The relevant operational constraints were included in a detailed membrane-based gas turbine power plant model. The membrane performance degradation with time was approximated by a linear function with average rate of 3.3% per 1,000 operation hours. Furthermore, performance deterioration of the gas turbine compressor and turbine were also considered. Simulations revealed that the power plant is substantially affected by degradation of the ceramic membranes and turbomachinery components. The already rather small operating window was further narrowed when compared with a conventional gas turbine power plant. Two different designs of the membrane-based power plant were analysed: (1) with and (2) without additional combustors (afterburners) between the membrane reactor and the gas turbine. Afterburners increase thermal efficiency as well as power output, but also lead to non-negligible CO 2 emissions. In order to have a frame of comparison, results for a conventional gas turbine power plant with degradation of turbomachinery components are also presented. Simulations representing changes in ambient temperature and fuel composition as well as failure incidents were executed to analyse the susceptibility of the gas turbine power plant to external and internal changes.

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“…The model of the mixedconducting membrane module is briefly presented in the Appendix. Additional modelling and simulation assumptions can be found in previous works [12,13].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…For sound operation of the membrane-based GTPP (Fig. 3) additional issues must be addressed to maintain the stability of critical process components [12,13].…”

Section: Introductionmentioning

confidence: 99%

“…Due to the lack of available data, degradation of the catalytic combustors in the membrane reactor [12] was also neglected.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Simulation of a mixed-conducting membrane-based gas turbine power plant for CO2 capture: system level analysis of operation stability and individual process unit degradation

Colombo

Хартон

Viskup

et al. 2010

J Solid State Electrochem

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Oxy-fuel combustion technology: current status, applications, and trends

Nemitallah

Habib

Badr

et al. 2017

Int. J. Energy Res.

115

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Summary The increased level of emissions of carbon dioxide into the atmosphere due to burning of fossil fuels represents one of the main barriers toward the reduction of greenhouse gases and the control of global warming. In the last decades, the use of renewable and clean sources of energies such as solar and wind energies has been increased extensively. However, due to the tremendously increasing world energy demand, fossil fuels would continue in use for decades which necessitates the integration of carbon capture technologies (CCTs) in power plants. These technologies include oxycombustion, pre‐combustion, and post‐combustion carbon capture. Oxycombustion technology is one of the most promising carbon capture technologies as it can be applied with slight modifications to existing power plants or to new power plants. In this technology, fuel is burned using an oxidizer mixture of pure oxygen plus recycled exhaust gases (consists mainly of CO2). The oxycombustion process results in highly CO2‐concentrated exhaust gases, which facilitates the capture process of CO2 after H2O condensation. The captured CO2 can be used for industrial applications or can be sequestrated. The current work reviews the current status of oxycombustion technology and its applications in existing conventional combustion systems (including gas turbines and boilers) and novel oxygen transport reactors (OTRs). The review starts with an introduction to the available CCTs with emphasis on their different applications and limitations of use, followed by a review on oxycombustion applications in different combustion systems utilizing gaseous, liquid, and coal fuels. The current status and technology readiness level of oxycombustion technology is discussed. The novel application of oxycombustion technology in OTRs is analyzed in some details. The analyses of OTRs include oxygen permeation technique, fabrication of oxygen transport membranes (OTMs), calculation of oxygen permeation flux, and coupling between oxygen separation and oxycombustion of fuel within the same unit called OTR. The oxycombustion process inside OTR is analyzed considering coal and gaseous fuels. The future trends of oxycombustion technology are itemized and discussed in details in the present study including: (i) ITMs for syngas production; (ii) combustion utilizing liquid fuels in OTRs; (iii) oxy‐combustion integrated power plants and (iv) third generation technologies for CO2 capture. Techno‐economic analysis of oxycombustion integrated systems is also discussed trying to assess the future prospects of this technology. Copyright © 2017 John Wiley & Sons, Ltd.

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