Boosting the IGCLC process efficiency by optimizing the desulfurization step

Hamers, H.P.; Romano, Matteo Carmelo; Spallina, Vincenzo; Chiesa, Paolo; Gallucci, Fausto; Annaland, Martin van Sint

doi:10.1016/j.apenergy.2015.05.064

Cited by 10 publications

(4 citation statements)

References 30 publications

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“…Chemical looping combustion (CLC), initially proposed by Ritcher and Knoche, is an indirect two-step combustion technology with inherent separation of CO 2 from N 2 (see Figure ). CLC is a pre-commercialization technology, but experimental tests and simulation studies on its integration with power plants indicate that it has the potential to be more efficient than all other CO 2 capture technologies. − …”

Section: Introductionmentioning

confidence: 99%

CO₂ Capture with Chemical Looping Combustion of Gaseous Fuels: An Overview

et al. 2017

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The world-wide consumption of natural gas (NG) and other fossil fuels (e.g., coal and crude oil) is ever increasing. However, most CO 2 resulting from either NG combustion or other processes is released into the atmosphere without capture. Chemical looping combustion (CLC) is a two-step combustion technology for power and heat generation with inherent CO 2 capture, using either gaseous fuels or solid and liquid fuels. A previous review focused on CLC of solid fuels or CLC of all types of fuels but did not give an in-depth and specific discussion of gaseous fuel CLC systems. China is one of the largest consumers of NG, coal, and crude oil in the world, and it is essential to develop an alternative technology to take the place of gaseous fuel (e.g., NG) combustion. This Review summarizes recent research and development work on CLC using gaseous fuels, including a technological and economic assessment, types of oxygen carriers (OCs), reactor types, coke formation and OCs poisoning, efficiency and exergy analyses, and model development based on a literature survey. The plant efficiency of NG-CLC can be up to 52−60% (LHV), including CO 2 compression, based on calculations and simulations, which is about 3−5% more efficient than a NG combined cycle with CO 2 capture. Ni-based materials have been widely developed and applied for NG-CLC because of its fast kinetics for methane conversion. CuO−Cu 2 O/Cu, Mn 3 O 4 −MnO, and Fe 2 O 3 −Fe 3 O 4 are typical OCs with high selectivity toward CO 2 and H 2 O. The operating conditions are closely dependent on reactor configurations, hydrodynamics, mass and heat balances, and characteristics of the OCs in the system. CLC and other CO 2 capture technologies are also compared in the present Review, which has rarely been investigated previously. From simulation and process analysis, a conceptual design of a NG-CLC power plant of thermal input 655 MW th is conducted to clarify its technological advantages and economic benefits compared to other power generation processes. The air reactor, fuel reactor, and OCs do not impose significant economic barriers for scale-up and commercialization of CLC.

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Section: Introductionmentioning

confidence: 99%

CO₂ Capture with Chemical Looping Combustion of Gaseous Fuels: An Overview

et al. 2017

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“…For case (b), the authors have already demonstrated in Spallina et al (2017aSpallina et al ( , 2015 that the temperature of the gases and its fluctuation can be smoothed by operating multiple reactors which are carrying the same phase in parallel but with a phase displacement, as shown for the MeOH-CL_PB configuration in Figure 6. This control strategy is beneficial for the other downstream processes because the flow rate, composition and temperature do not exhibit fluctuations after mixing as shown in Figure 7: the temperature of the gas after oxidation and the products of reduction is almost constant (± 6 °C) while during the reforming there is a maximum temperature variation of only 40 °C over the entire cycle.…”

Section: Methanol Productionmentioning

confidence: 95%

“…A different chemical looping concept for both combustion and reforming has been proposed by Spallina et al, (2017a) using packed bed reactor technology (CL_PB). Starting from a previous research project on chemical looping combustion integrated with IGCC for power production (Hamers et al, 2015;Spallina et al, 2013Spallina et al, , 2015b) the proof of concept and model validation has been carried out in a 500 g lab-scale reactor using Ni/CaAl 2 O 4 as oxygen carrier previously tested and characterised (Medrano et al, 2015).…”

mentioning

confidence: 99%

Techno-economic assessment of an integrated high pressure chemical-looping process with packed-bed reactors in large scale hydrogen and methanol production

Spallina

Motamedi

Gallucci

et al. 2019

International Journal of Greenhouse Gas Control

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“…The modelling of chemical looping combustion plays an important role in the understanding, development and optimization of the entire process. Different ways of desulphurizing the Integrated Gasification Chemical-Looping Combustion (IGCLC) process have been investigated, [18]. A process model for coal chemical-looping combustion, has been validated against test results in a 100 kW th pilot, [19].…”

Section: Design Costing Mathematical Modelling and Simulation Of Chmentioning

confidence: 99%