Techno-economic and exergetic assessment of an oxy-fuel power plant fueled by syngas produced by chemical looping CO2 and H2O dissociation

Farooqui, Azharuddin; Bose, Archishman; Ferrero, Domenico; Llorca, Jordi; Santarelli, Massimo

doi:10.1016/j.jcou.2018.09.001

Cited by 43 publications

(29 citation statements)

References 62 publications

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“…42,96,170,171 Both CL-SMR and CL-WGS are also referred to as CL-water-splitting processes. 47,172 Recently the CL-DRM cycle, in which CO 2 is used to regenerate the oxygen carrier (via (R6)), has been proposed to maximize the conversion of CO 2 , captured from various emission sources, to CO. 96,162,167,[173][174][175] The modified CL-methane POx coupled with H 2 O-CO 2 splitting 176 for the oxygen carrier regeneration allows the production of syngas with identical compositions in both the reduction and regeneration steps. 121,177,178 The oxygen carriers used in the above-mentioned chemical looping processes are often called redox catalysts because they simultaneously act as an oxygen donor (i.e.…”

Section: Perspectivementioning

confidence: 99%

Chemical looping beyond combustion – a perspective

Zhu

Imtiaz

Donat

et al. 2020

Energy Environ. Sci.

373

179

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Section: Perspectivementioning

confidence: 99%

Chemical looping beyond combustion – a perspective

Zhu

Imtiaz

Donat

et al. 2020

Energy Environ. Sci.

373

179

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“…CE and CB representing the equipment cost with a capacity of G and Gref, respectively; M is the equipment scaling factor exponent, ranging between 0.6 -1 [33,34]. The summary of the scale factors for the different components of the plant can be found in Farooqui et al [27] and scaling factor for solar tower and its component with reflectors are considered as unity.…”

Section: Methodsmentioning

confidence: 99%

“…The corresponding water released from the condenser of the exhaust gas was 550 mol/s. For the layouts of the base case power plants with and without CCS integration without CL unit as modelled in ASPEN Plus and can be seen in Farooqui et al [27].…”

Section: Assumptionsmentioning

confidence: 99%

Simulation of two-step redox recycling of non-stoichiometric ceria with thermochemical dissociation of CO2/H2O in moving bed reactors – Part II: Techno-economic analysis and integration with 100 MW oxyfuel power plant with carbon capture

Farooqui

Bose

Ferrero

et al. 2019

Chemical Engineering Science

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This paper presents a solar thermochemical looping CO2/H2O dissociation reactors unit (CL) with commercial ceria as redox oxygen carrier. The CL unit is integrated to a 100 MW oxyfueled natural gas combined cycle with carbon capture to investigate the efficiency benefit obtained. A moving bed counter-current reactor model is developed in Aspen Plus considring rigorous continuous stirred reactors (RCSTRs) for both reduction and oxidation. A userkinetic subroutine is developed in FORTRAN and linked with each RCSTR in both reduction and oxidation reactor with their respective kinetics. It is found that efficiency of the chemical looping unit varies widely with reduction reactor temperature and vacuum pressure. Chemical looping unit efficiency is obtained for three conditions considering only CO2 and only H2O it was found to be 35.41% and 30.84% respectively, and for mixture (86% CO2, 14% H2O) 35.26%. The efficiency drop for only H2O is due to heat needed for phase change and more vacuum pump required for hydrogen compare to CO2. The maximum solar to electrical efficiency for the whole system layout was found to be 25.4% with a reduction temperature of 1600 o C and 10 -7 bar vacuum pressure. With a 0.5 m 3 reduction reactor and 5 m 3 oxidation reactor the maximum net electricity produced by add-on unit is 12.85 MWe. Economic analysis revealed that the major contributor to the total project cost is hydrogen compressor (19%) and solar field and tower represent 39% of the total equipment costs giving a specific overnight capital cost of 12136 $/kW with LCOE of 1100 S/MWh.

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“…Farooqui et al [129] compared the performance of an oxy-fuel combined cycle plant integrated with chemical looping syngas production (OXY-CC-CL) with a conventional NGCC and a natural gas-based oxyfuel combined cycle (OXY-CC) plants (Fig. 21).…”

Section: Chemical Looping Reformingmentioning

confidence: 99%

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

Osman

Khan

Zaabout

et al. 2021

Fuel Processing Technology

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Chemical looping has great potential for reducing the energy penalty and associated costs of CO2 capture from fossil fuel-based power and chemical production while maintaining high efficiency. However, pressurized operation is a prerequisite for maximizing energy efficiency in most proposed chemical looping configurations, introducing significant complexities related to system design, operation and scale-up. Understanding the effects of pressurization on chemical looping systems is therefore important for realizing the expected cost reduction of CO2 capture and speed up the industrial deployment of this promising class of technologies.This paper reviews studies that investigated three key aspects associated with pressurized operation of chemical looping processes. First, the effect of pressure on the kinetics of the various reactions involved in these processes was discussed. Second, the different reactor configurations proposed for chemical looping were discussed in detail, focusing on their suitability for pressurized operation and highlighting potential technical challenges that may hinder successful operation and scale-up. Third, techno-economic assessment studies for these systems were reviewed, identifying the process configuration and integration options that maximize the energy efficiency and minimize the costs of CO2 avoidance.Prominent conclusions from the review include the following. First, the frequently reported negative effect of pressure on reaction kinetics appears to be overstated, implying that pressurization is an effective way to intensify chemical looping processes. Second, no clear winner could be identified from the six pressurized chemical looping reactor configurations

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Techno-economic and exergetic assessment of an oxy-fuel power plant fueled by syngas produced by chemical looping CO2 and H2O dissociation

Cited by 43 publications

References 62 publications

Chemical looping beyond combustion – a perspective

Chemical looping beyond combustion – a perspective

Simulation of two-step redox recycling of non-stoichiometric ceria with thermochemical dissociation of CO2/H2O in moving bed reactors – Part II: Techno-economic analysis and integration with 100 MW oxyfuel power plant with carbon capture

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

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Techno-economic and exergetic assessment of an oxy-fuel power plant fueled by syngas produced by chemical looping CO2 and H2O dissociation

Cited by 43 publications

References 62 publications

Chemical looping beyond combustion – a perspective

Chemical looping beyond combustion – a perspective

Simulation of two-step redox recycling of non-stoichiometric ceria with thermochemical dissociation of CO2/H2O in moving bed reactors – Part II: Techno-economic analysis and integration with 100 MW oxyfuel power plant with carbon capture

Review of pressurized chemical looping processes for power generation and chemical production with integrated CO2 capture

Contact Info

Product

Resources

About

Simulation of two-step redox recycling of non-stoichiometric ceria with thermochemical dissociation of CO2/H2O in moving bed reactors – Part II: Techno-economic analysis and integration with 100 MW oxyfuel power plant with carbon capture