Oxyfuel combustion for CO2 capture in power plants

Stanger, Rohan; Wall, Terry; Spörl, Reinhold; Paneru, Manoj; Grathwohl, Simon; Weidmann, Max; Scheffknecht, Günter; McDonald, D.K.; Myöhänen, Kari; Ritvanen, Jouni; Rahiala, Sirpa; Hyppänen, Timo; Mletzko, Jan; Kather, Alfons; Santos, Stanley

doi:10.1016/j.ijggc.2015.06.010

Cited by 356 publications

(179 citation statements)

References 179 publications

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“…A K-type thermocouple with a diameter of 1.5 mm and accuracy of 2.2 K is employed in the measurements to detect the combustor inlet temperature. Methane (CH 4 ) fuel of 99.98% purity is used in the experiment and supplied from pressurised gas bottles. The fuel stream is metered and controlled using a differential pressure mass-flow.…”

Section: Flow Paths and Combustormentioning

confidence: 99%

“…The CO 2 separated from the flue gas can be sequestered underground or used in other applications such as enhanced oil recovery or enhanced coal bed methane recovery [2,3]. Compared with current conventional power generation systems, the main drawback of the oxy-fuel combustion cycle is the need for an air separation unit (ASU) which has both a high energy consumption and high investment costs for equipment in most cases [4]. In order to make full use of O 2 while achieving the complete combustion of fuel, oxy-fuel combustion is preferably carried out under stoichiometric conditions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of Methane Oxy-Fuel Combustion in a Swirl-Stabilised Gas Turbine Model Combustor

Tong

Thern

et al. 2017

Energies

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CO 2 has a strong impact on both operability and emission behaviours in gas turbine combustors. In the present study, an atmospheric, preheated, swirl-stabilised optical gas turbine model combustor rig was employed. The primary objectives were to analyse the influence of CO 2 on the fundamental characteristics of combustion, lean blowout (LBO) limits, CO emission and flame structures. CO 2 dilution effects were examined with three preheating temperatures (396.15, 431.15, and 466.15 K). The fundamental combustion characteristics were studied utilising chemical kinetic simulations. To study the influence of CO 2 on the operational range of the combustor, equivalence ratio (Φ) was varied from stoichiometric conditions to the LBO limits. CO emissions were measured at the exit of the combustor using a water-cooled probe over the entire operational range. The flame structures and locations were characterised by performing CH chemiluminescence imaging. The inverse Abel transformation was used to analyse the CH distribution on the axisymmetric plane of the combustor. Chemical kinetic modelling indicated that the CO 2 resulted in a lower reaction rate compared with the CH 4 /air flame. Fundamental combustion properties such as laminar flame speed, ignition delay time and blowout residence time were found to be affected by CO 2 . The experimental results revealed that CO 2 dilution resulted in a narrower operational range for the equivalence ratio. It was also found that CO 2 had a strong inhibiting effect on CO burnout, which led to a higher concentration of CO in the combustion exhaust. CH chemiluminescence showed that the CO 2 dilution did not have a significant impact on the flame structure.

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Section: Flow Paths and Combustormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of Methane Oxy-Fuel Combustion in a Swirl-Stabilised Gas Turbine Model Combustor

Tong

Thern

et al. 2017

Energies

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“…[1][2][3] Thus, power generation by CO 2neutral fuels and firing fossil fuels with low carbon emissions appear as key aspects to provide lower-cost and lower-carbon alternatives for reducing CO 2 emissions at present and in the near future. 5 A number of studies on OF combustion of coal and biomass have been conducted and reviewed in previous studies, [13][14][15][16] where a detailed description of OF combustion technology and its industrial status can be found. 5 A number of studies on OF combustion of coal and biomass have been conducted and reviewed in previous studies, [13][14][15][16] where a detailed description of OF combustion technology and its industrial status can be found.…”

Section: Introductionmentioning

confidence: 99%

Thermogravimetric analysis and process simulation of oxy-fuel combustion of blended fuels including oil shale, semicoke, and biomass

et al. 2018

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Summary Oxy‐fuel (OF) combustion is considered as one of the promising carbon capture and storage technologies for reducing CO2 emissions from power plants. In the current work, the thermal behaviour of Estonian oil shale (EOS) and its semicoke (SC), pine saw dust, and their blends were studied comparatively under model air (21%O2/79%Ar) and OF (30%O2/70%CO2) conditions using thermogravimetric analysis. Mass spectrometry analysis was applied to monitor the evolved gases. The effect of SC and pine saw dust addition on different combustion stages was analysed using kinetic analysis methods. In addition, different co‐firing cases were simulated using the ASPEN PLUS V8.6 (APV86) software tool to evaluate the effects of blending EOS with different biomass fuels of low and high moisture contents. The specific boiler temperatures of each simulated case with the same adjusted thermal fuel input were calculated while applying the operation conditions of air and OF combustion. According to the experiment and process simulation results, the low heating value and high carbonate content of SC brings along endothermic decomposition of carbonates, which negatively affects the heat balance during the conventional co‐combustion of EOS with SC. Instead, firing of EOS with SC and biomass in OF process can be an effective solution to reduce the environmental impact in terms of the reduction of CO2 emissions and ash. Furthermore, the sensible heat from SC can positively affect the energy balance of the system as the endothermic effect of decomposition of CaCO3 (for both EOS and SC) can be avoided in OF combustion.

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“…Post-combustion capture can be applied to conventional pulverized coal (PC) boilers and natural gas combined cycle (NGCC) plants. The third approach is oxy-combustion, in which coal or gas is burned in a mixture of oxygen and CO 2 rather than air (72). Oxy-combustion avoids the need for a CO 2 separation step, but requires separation of oxygen from air.…”

Section: Fossil-ccsmentioning

confidence: 99%

The Future of Low-Carbon Electricity

Greenblatt

Brown

Slaybaugh

et al. 2017

Annu. Rev. Environ. Resour.

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We review future global demand for electricity and major technologies positioned to supply it with minimal greenhouse gas (GHG) emissions: renewables (wind, solar, water, geothermal, and biomass), nuclear fission, and fossil power with CO2 capture and sequestration. We discuss two breakthrough technologies (space solar power and nuclear fusion) as exciting but uncertain additional options for low-net GHG emissions (i.e., low-carbon) electricity generation. In addition, we discuss grid integration technologies (monitoring and forecasting of transmission and distribution systems, demand-side load management, energy storage, and load balancing with low-carbon fuel substitutes). For each topic, recent historical trends and future prospects are reviewed, along with technical challenges, costs, and other issues as appropriate. Although no technology represents an ideal solution, their strengths can be enhanced by deployment in combination, along with grid integration that forms a critical set of enabling technologies to assure a reliable and robust future low-carbon electricity system.

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Oxyfuel combustion for CO2 capture in power plants

Cited by 356 publications

References 179 publications

Investigation of Methane Oxy-Fuel Combustion in a Swirl-Stabilised Gas Turbine Model Combustor

Investigation of Methane Oxy-Fuel Combustion in a Swirl-Stabilised Gas Turbine Model Combustor

Thermogravimetric analysis and process simulation of oxy-fuel combustion of blended fuels including oil shale, semicoke, and biomass

The Future of Low-Carbon Electricity

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