The oxygen production pre-combustion (OPPC) IGCC plant for efficient power production with CO2 capture

Pozo, Carlos Arnáiz del; Cloete, Schalk; Cloete, Jan Hendrik; Álvaro, Ángel Jiménez; Amini, Shahriar

doi:10.1016/j.enconman.2019.112109

Cited by 19 publications

(12 citation statements)

References 48 publications

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“…Simplified schematics of the power plants for Cases 3, 4, and 5 are shown in Figures 2-4, respectively. More detailed schematics can be found in previously published technical assessments [17,21]. The most important differences between the GSC (Figure 2) and GSC-AF (Figure 3) plants are (1) the GSC-AF plant fires natural gas after the GSC oxidation step to increase the TIT, and (2) the GSC-AF plant transfers heat from the CO 2 rich reduction step outlet gases to the compressed air stream using a recuperator.…”

Section: Methodsmentioning

confidence: 99%

“…Similar to the benchmark IGCC plants, the configurations integrating GSC technology produce syngas with a Shell gasifier, but also include hot has desulphurization as an additional efficiency enhancement. The OPPC plant presented here (Case 5) has a similar configuration to the one shown in Arnaiz del Pozo et al [21], where a GSOP cluster delivers an oxidant stream to a Winkler gasifier to produce syngas. After hot gas desulphurization and contaminant removal, a portion of the syngas, together with some intermediate pressure steam from the bottoming cycle, is routed to the GSOP cluster.…”

Section: Process Simulationmentioning

confidence: 99%

“…Deng et al [20] modelled a chemical looping air separation unit using a fluidized bed reactor and optimized the process. A gas switching variant of this principle, called gas switching oxygen production (GSOP), was recently proposed to displace the ASU in a precombustion CO 2 capture IGCC configuration [21]. This oxygen production pre-combustion (OPPC) plant could achieve a net efficiency of more than 45%, albeit with a somewhat lower CO 2 avoidance of around 80%.…”

Section: Introductionmentioning

confidence: 99%

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Techno-Economic Assessment of IGCC Power Plants Using Gas Switching Technology to Minimize the Energy Penalty of CO2 Capture

et al. 2021

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Cost-effective CO2 capture and storage (CCS) is critical for the rapid global decarbonization effort recommended by climate science. The increase in levelized cost of electricity (LCOE) of plants with CCS is primarily associated to the large energy penalty involved in CO2 capture. This study therefore evaluates three high-efficiency CCS concepts based on integrated gasification combined cycles (IGCC): (1) gas switching combustion (GSC), (2) GSC with added natural gas firing (GSC-AF) to increase the turbine inlet temperature, and (3) oxygen production pre-combustion (OPPC) that replaces the air separation unit (ASU) with more efficient gas switching oxygen production (GSOP) reactors. Relative to a supercritical pulverized coal benchmark, these options returned CO2 avoidance costs of 37.8, 22.4 and 37.5 €/ton (including CO2 transport and storage), respectively. Thus, despite the higher fuel cost and emissions associated with added natural gas firing, the GSC-AF configuration emerged as the most promising solution. This advantage is maintained even at CO2 prices of 100 €/ton, after which hydrogen firing can be used to avoid further CO2 cost escalations. The GSC-AF case also shows lower sensitivity to uncertain economic parameters such as discount rate and capacity factor, outperforms other clean energy benchmarks, offers flexibility benefits for balancing wind and solar power, and can achieve significant further performance gains from the use of more advanced gas turbine technology. Based on all these insights, the GSC-AF configuration is identified as a promising solution for further development.

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Section: Methodsmentioning

confidence: 99%

Section: Process Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Techno-Economic Assessment of IGCC Power Plants Using Gas Switching Technology to Minimize the Energy Penalty of CO2 Capture

et al. 2021

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“…This assumption is justified based on the excellent mixing of fluidized beds and the size of the industrial-scale reactors that are considered. The reader is referred to earlier work for a detailed description of the modeling methodology and reactor operating conditions for the GSC [21] and GSOP [13] reactors. Figure 1 illustrates the behavior of the GSC and GSOP reactors in the GSOP-GSC IGCC power plant and will be discussed here briefly.…”

Section: Reactor Simulationsmentioning

confidence: 99%

“…[12] shows a reduction in the energy penalty for CO 2 capture of 1.8% points for a precombustion CO 2 capture IGCC plant employing CLOP operating at atmospheric pressures instead of an air separation unit (ASU). In [13], a pressurized gas switching oxygen production (GSOP) cluster was integrated in a precombustion CO 2 capture IGCC with approximately 6%-points higher efficiency and capture rates above 80%.…”

Section: Introductionmentioning

confidence: 99%

Exergy Analysis of Gas Switching Chemical Looping IGCC Plants

et al. 2020

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Integrated gasification combined cycles (IGCC) are promising power production systems from solid fuels due to their high efficiency and good environmental performance. Chemical looping combustion (CLC) is an effective route to reduce the energy penalty associated with CO2 capture. This concept comprises a metal oxygen carrier circulated between a reduction reactor, where syngas is combusted, and an oxidation reactor, where O2 is withdrawn from an air stream. Parallel to CLC, oxygen carriers that are capable of releasing free O2 in the reduction reactor, i.e., chemical looping oxygen production (CLOP), have been developed. This offers interesting integration opportunities in IGCC plants, replacing energy demanding air separation units (ASU) with CLOP. Gas switching (GS) reactor cluster technology consists of a set of reactors operating in reduction and oxidation stages alternatively, providing an averaged constant flow rate to the gas turbine and a CO2 stream readily available for purification and compression, and avoiding the transport of solids across reactors, which facilitates the scale up of this technology at pressurized conditions. In this work, exergy analyses of a gas switching combustion (GSC) IGCC plant and a GSOP–GSC IGCC plant are performed and consistently benchmarked against an unabated IGCC and a precombustion CO2 capture IGCC plant. Through the exergy analysis methodology, an accurate assessment of the irreversible loss distribution in the different power plant sections from a second-law perspective is provided, and new improvement pathways to utilize the exergy contained in the GSC reduction gases outlet are identified.

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Closing the Anthropogenic Chemical Carbon Cycle toward a Sustainable Future via CO₂ Valorization

Zhang

Sewell

Huang

et al. 2021

Advanced Energy Materials

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Jiawei Zhang earned his Ph.D. degree in chemical engineering and technology from Nanjing University of Science and Technology in 2019. He joined Hunan University as a postdoctoral fellow in 2019 and then worked as a postdoctoral fellow under the supervision of Prof. Zhiqun Lin at the Georgia Institute of Technology. He is now working in the School of Material Science and Engineering at Hunan University. His current research is focused on nanomaterials and their application in energy storage and conversion.

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The oxygen production pre-combustion (OPPC) IGCC plant for efficient power production with CO2 capture

Cited by 19 publications

References 48 publications

Techno-Economic Assessment of IGCC Power Plants Using Gas Switching Technology to Minimize the Energy Penalty of CO2 Capture

Techno-Economic Assessment of IGCC Power Plants Using Gas Switching Technology to Minimize the Energy Penalty of CO2 Capture

Exergy Analysis of Gas Switching Chemical Looping IGCC Plants

Closing the Anthropogenic Chemical Carbon Cycle toward a Sustainable Future via CO₂ Valorization

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The oxygen production pre-combustion (OPPC) IGCC plant for efficient power production with CO2 capture

Cited by 19 publications

References 48 publications

Techno-Economic Assessment of IGCC Power Plants Using Gas Switching Technology to Minimize the Energy Penalty of CO2 Capture

Techno-Economic Assessment of IGCC Power Plants Using Gas Switching Technology to Minimize the Energy Penalty of CO2 Capture

Exergy Analysis of Gas Switching Chemical Looping IGCC Plants

Closing the Anthropogenic Chemical Carbon Cycle toward a Sustainable Future via CO2 Valorization

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Product

Resources

About

Closing the Anthropogenic Chemical Carbon Cycle toward a Sustainable Future via CO₂ Valorization