Process modeling of chemical looping combustion (CLC) of municipal solid waste

Yaqub, Zainab T.; Oboirien, Bilainu; Akintola, Ayooluwa Tomiwa

doi:10.1007/s10163-021-01180-0

Cited by 9 publications

(2 citation statements)

References 36 publications

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“…The application of chemical looping with oxygen uncoupling (CLOU) to the energy utilization of the combustible gas from pyrolysis and gasification of municipal solid waste (MSW) can not only realize efficient combustion but also achieve the effect of pollutant emission reduction and CO2 synergistic control [1,2]. However, the previous study found that the chlorine-containing components were prone to cause chlorination loss and irreversible solid chlorination of the active component in the copperbased oxygen carrier (OC), and also exacerbated the metal aggregation and sintering, greatly reducing the cyclic reaction activity and stability of the OC [3,4].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Simulation of the Interaction Reaction between Copper-Based Oxygen Carrier and Acid Gases from Municipal Solid Waste Pyrolysis

Lin,

Lu,

2024

J. Phys.: Conf. Ser.

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To reveal the interaction reaction of copper-based oxygen carriers with acid gases during chemical looping with oxygen uncoupling of MSW pyrolysis and gasification syngas, the thermodynamic analysis is employed by HSC Chemistry. The thermodynamic simulation results show that the products of the copper-chloride interactions are solid CuCl, gaseous Cu3Cl3 (g), and CuCl (g), and no solid CuCl2 is formed. In addition, it’s found that CuCl (g) originates from the high-temperature decomposition of the complex Cu3Cl3 (g). At a sufficient amount of OC, the interaction products of copper-based OC with H2S are CuSO4, SO2, and Cu2SO4, while Cu2S and CuS disappear. Compared to HCl, H2S dominates during the competitive reaction or adsorption with copper-based oxygen carrier or CaO. Due to the capture of Cl and S in the gaseous state of Ca2+, the lattice oxygen of chlorinated or sulfated oxygen carriers can be restored, suggesting that CaO can be used as an in situ dechlorinator for CLOU. The results of this work will provide theoretical guidance for the inhibition of copper-based oxygen carriers chlorination loss and active design of multifunctional oxygen carriers.

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Section: Introductionmentioning

confidence: 99%

Thermodynamic Simulation of the Interaction Reaction between Copper-Based Oxygen Carrier and Acid Gases from Municipal Solid Waste Pyrolysis

Lin,

Lu,

2024

J. Phys.: Conf. Ser.

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“…There is a direct relationship between the ratio of hydrogen to carbon and the concentration of soot. The higher the H/C ratio, the higher the concentration of soot particles [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Formation of soot in the disposal of municipal solid waste

Барышева

Mokhova

2021

E3S Web Conf.

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In power plants intended for the disposal of solid household waste, the processes take place at a high temperature. For such installations, nonequilibrium processes are characteristic of a change in the composition of combustion products caused by the final rates of the ongoing chemical reactions. This affects the basic characteristics of the combustion process of municipal solid waste. A mathematical model has been created for calculating the chemically nonequilibrium composition of the fuel. Solid household and industrial waste is a high-energy fuel. It is a high energy fuel. The process of thermal neutralization of solid household waste is considered. An alternative calculation method is presented that allows one to find the composition of combustion products under conditions of nonequilibrium in the process of thermal utilization of solid domestic waste. The data on the composition and properties of solid household waste obtained by the developed method of calculation allow predicting the yield of super Eco toxicants in combustion products. On the basis of the equations of formal chemical kinetics, an alternative was created, which consists in determining the composition of combustion products taking into account the kinetics of chemical reactions. The assumption is introduced that transformations in the gas phase are elementary, one-stage. Various chemical interactions can be represented by a set of elementary stages. The most probable are mono-, biand three molecular chemical reactions. The method allows predicting the yield of Eco toxicants by finding the composition of the fuel combustion products prior to its utilization.

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Chemical looping combustion (CLC) of municipal solid waste (MSW)

Yaqub

Oboirien

Leion

2023

J Mater Cycles Waste Manag

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Chemical Looping Combustion (CLC) has been found to be a better alternative in converting Municipal Solid Waste (MSW) to energy and has the potential to reduce the generation of dioxins due to the inhibition of the de-novo synthesis of dioxins. This study comprehensively reviews the experimental studies of CLC of MSW, the oxygen carriers, reactor types, performance evaluation, and ash interaction studies. Modeling and simulation studies of CLC of MSW were also critically presented. Plastic waste is MSW’s most studied non-biomass component in MSW under CLC conditions. This is because CLC has been shown to reduce the emission of dioxins and furans, which are normally emitted during the conventional combustion of plastics. From the several oxygen carriers tested with MSW’s CLC, alkaline earth metals (AEM) modified iron ore was the most effective for reducing dioxin emissions, improving combustion efficiency and carbon conversion. Also, oxygen carriers with supports were more reactive than single carriers and CaSO4/Fe2O3 and CaSO4 in silica sol had the highest oxygen transport ability. Though XRD analysis and thermodynamic calculations of the reacted oxygen carriers yielded diverse results due to software computation constraints, modified iron ore produced less HCl and heavy metal chlorides compared to iron ore and ilmenite. However, alkali silicates, a significant cause of fouling, were observed instead. The best reactor configuration for the CLC of MSW is the fluidized bed reactor, because it is easy to obtain high and homogeneous solid–gas mass transfer. Future research should focus on the development of improved oxygen carriers that can sustain reactivity after several cycles, as well as the system’s techno-economic feasibility.

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Process modeling of chemical looping combustion (CLC) of municipal solid waste

Cited by 9 publications

References 36 publications

Thermodynamic Simulation of the Interaction Reaction between Copper-Based Oxygen Carrier and Acid Gases from Municipal Solid Waste Pyrolysis

Thermodynamic Simulation of the Interaction Reaction between Copper-Based Oxygen Carrier and Acid Gases from Municipal Solid Waste Pyrolysis

Formation of soot in the disposal of municipal solid waste

Chemical looping combustion (CLC) of municipal solid waste (MSW)

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