Molten carbonate fuel cells for CO2 separation and segregation by retrofitting existing plants – An analysis of feasible operating windows and first experimental findings

Rexed, Ivan; Pietra, Massimiliano Della; McPhail, Stephen J.; Lindbergh, Göran; Lagergren, Carina

doi:10.1016/j.ijggc.2015.01.012

Cited by 46 publications

(14 citation statements)

References 26 publications

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“…As already mentioned before, the interactions between sulphur dioxide and cell components are various and of different nature. Because of this, measurements of MCFC performance were initiated only after H2S was observed and stabilized at the anode outlet, thereby assuming that the reverse of reaction (4), as all other poisoning mechanisms, had achieved equilibrium conditions. The quantification of the amount of H2S at the anode was performed, using colorimetric syringe (prod: Kitagawa; mod: 120SE).…”

Section: Experimental Methodsmentioning

confidence: 99%

“…Specifically, SO2 is converted to sulphate by reaction (3); consequently, under load, sulphate ions migrate to the anode, accumulating in the electrolyte. At the anode side sulphur is released as H2S according to the reverse of reaction (4).…”

Section: So2 Effectsmentioning

confidence: 99%

“…Such post-combustion carbon dioxide separation is most effective applied to coal combustion and combined cycle power generation, due to the large potential of CO2 reduction from these plants. The flue gas from these types of combustion technologies typically contains 3-12% CO2 and residual O2, both in the lower operational range of the MCFC: the stability of operation in these conditions has been studied experimentally in [1][2][3][4][5][6][7][8]. Several other studies have assessed the integration of an MCFC as CCS retrofit approaching the topic with numerical models, considering the same ranges of CO2 content [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of SO2 poisoning in a Molten Carbonate Fuel Cell operating in CCS configuration

Pietra

Discepoli

Bosio

et al. 2016

International Journal of Hydrogen Energy

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One of the most interesting innovations in the CCS (Carbon Capture and Storage) field is the use of MCFCs as carbon dioxide concentrators, feeding their cathode side (or air side) with the exhaust gas of a traditional power plant. The feasibility of this kind of application depends on the resistance of the MCFC to air-side contaminants, with particular attention to SO2. The aim of this work is to investigate the effects of poisoning when sulphur dioxide is added to the cathodic stream in various concentrations and in different operating conditions. This study was carried out operating single cells (80 cm 2) with a cathodic feeding composition simulating typical flue gas conditions, i.e. N2, H2O, O2 and CO2 in 73:9:12:6 mole ratio as reference mixture. On the anodic side a base composition was chosen with H2, CO2 and H2O in 64:16:20 mole ratio. Starting from these reference mixtures, the effect of single species on cell poisoning was experimentally investigated considering, as main parameters chosen for the sensitivity analysis, SO2 (0-24ppm) and CO2 (4-12%) content in the cathodic feeding mixture, H2 (40-64%) content in the anodic stream as well as the operating temperature (620-680°C). Results showed that degradation caused by SO2 poisoning is strongly affected by the operating conditions. Data gathered during this experimental campaign will be used in a future work to model the poisoning mechanisms through the definition of MCFC electrochemical kinetics which take into account the SO2 effects.

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Section: Experimental Methodsmentioning

confidence: 99%

Section: So2 Effectsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of SO2 poisoning in a Molten Carbonate Fuel Cell operating in CCS configuration

Pietra

Discepoli

Bosio

et al. 2016

International Journal of Hydrogen Energy

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“…The carbonate in CFC is in a molten phaseat higher temperature, which means that in addition to the LT-SOFC redox reactions, also molten carbonate fuel cell reactions could be present, which could enhance the performance [28]. Therefore, a combination of molten carbonate fuel cell [17][18][19] and LT-SOFC [20][21][22] reactions may be present in the tested fuel cell. Actually, there could then be several types of ions such as H + , O 2-, CO 3 2− , which could contribute to the current based on the MCFC and LT-SOFC reactions: MCFC-reactions:…”

Section: Fuel Cell Measurementsmentioning

confidence: 99%

Effect of alkali carbonate in samarium-doped ceria electrolyte for a ceramic fuel cell

Jing¹

2016

NES

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Here we analyze the effects of alkali carbonate (Na 2 CO 3 and K 2 CO 3) in a low-temperature ceramic fuel cell. The electrolyte consists of a composite of samarium doped cerium (Ce 0.8 Sm 0.2 O 1.9) and carbonate. The alkali ions and CO 2 mixed with air as oxidant improved the power density and the open circuit voltage (OCV) of the fuel cell. The best results achieved showed a power density of 500 mW/cm 2 and an OCV of 1.2 V at 500 o C. The highest OCV observed was 1.4 V. The fuel cell exhibits both molten carbonate and low-temperature solid oxide fuel cell reactions.

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“…Rising fuel prices and increasing electricity consumption are driving the research into more efficient electricity and heat generation sources [2,3,11,13,16,18], additional limits are created by CO 2 emission reduction requirements [4,14,20,21,25]. Energy used for space and domestic water heating constitutes 1/3 of the total energy used in industrialized countries like Poland.…”

Section: Introductionmentioning

confidence: 99%

Analysis of nodalization effects on the prediction error of generalized finite element method used for dynamic modeling of hot water storage tank

Wołowicz

Kupecki

Wawryniuk

et al. 2015

Archives of Thermodynamics

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The paper presents dynamic model of hot water storage tank. The literature review has been made. Analysis of effects of nodalization on the prediction error of generalized finite element method (GFEM) is provided. The model takes into account eleven various parameters, such as: flue gases volumetric flow rate to the spiral, inlet water temperature, outlet water flow rate, etc. Boiler is also described by sizing parameters, nozzle parameters and heat loss including ambient temperature. The model has been validated on existing data. Adequate laboratory experiments were provided. The comparison between 1-, 5-, 10- and 50-zone boiler is presented. Comparison between experiment and simulations for different zone numbers of the boiler model is presented on the plots. The reason of differences between experiment and simulation is explained.

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Molten carbonate fuel cells for CO2 separation and segregation by retrofitting existing plants – An analysis of feasible operating windows and first experimental findings

Cited by 46 publications

References 26 publications

Experimental investigation of SO2 poisoning in a Molten Carbonate Fuel Cell operating in CCS configuration

Experimental investigation of SO2 poisoning in a Molten Carbonate Fuel Cell operating in CCS configuration

Effect of alkali carbonate in samarium-doped ceria electrolyte for a ceramic fuel cell

Analysis of nodalization effects on the prediction error of generalized finite element method used for dynamic modeling of hot water storage tank

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