By-products from the integrated gas combined cycle in IGCC systems

Torralvo, Fátima Arroyo; Fernández‐Pereira, Constantino; Piqueras, Oriol Font

doi:10.1016/b978-0-08-100167-7.00014-7

Cited by 7 publications

(4 citation statements)

References 38 publications

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“…The reduction zone for the gasification of PKS was also attributed with the water-gas reaction, water shift reaction, Boudouard reaction, and methanation [16]. The carbon volatiles in PKS were also highly reactive with oxygen.…”

Section: Gasification Characteristics Of Pksmentioning

confidence: 94%

“…In the reduction zone, four major reactions with limited O2 supply took place: water-gas reaction, water shift reaction, Boudouard reaction, and methanation [16]. Reduction in a gasification process was accomplished by introducing carbon dioxide (CO2) or water vapor (H2O) to the volatiles of coal.…”

Section: Gasification Characteristics Of Coalmentioning

confidence: 99%

“…Thus, the presence of free radical O atom was insignificant for typical diatomic O2 form. After the radical O atom had completely reacted, the reduction process was completed [16]. Through this process, CO2 was reduced by carbon to produce two CO molecules, and H2O was reduced by carbon to produce H2 and CO.…”

Section: Gasification Characteristics Of Coalmentioning

confidence: 99%

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CFD Simulation of Air-Piloted Downdraft Gasification Process: A Comparative Study Between Coal and Palm Kernel Shell as Feedstock

Mohd Dali,

Abd Rashid,

Ishak

et al. 2023

IJIE

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A fixed bed downdraft gasifier model based on computational fluid dynamic (CFD) framework was developed to investigate the influence of feedstock (palm kernel shell [PKS] and coal) on the quality of syngas produced via the gasification process. Euler–Euler approach was utilized in this study to describe the gas and solid phases. Realizable k-ε turbulence model was used to evaluate the constitutive properties of the dispersed phase and the gas phase behavior. This simulation model was validated by comparing the syngas composition of gasification simulation of coal with previous research, which yielded the overall accuracy result of 83.2%. This study also highlighted that PKS gasification produced 53.74% and 90.51% higher composition of H2and CO respectively as compared to coal gasification. Whereas coal gasification produced 81.35%, 71.31% and 52.29% higher composition of CH4, H2O and CO2respectively as compared to PKS gasification. Hence, PKS produced 66.2% higher combustible gas of H2and CO than coal. PKS is thus considered as a potential renewable feedstock for gasification process as an alternative to the non-renewable coal. In addition, PKS gasification produced 52.29% lesser composition of CO2as compared to coal gasification.

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Section: Gasification Characteristics Of Pksmentioning

confidence: 94%

Section: Gasification Characteristics Of Coalmentioning

confidence: 99%

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CFD Simulation of Air-Piloted Downdraft Gasification Process: A Comparative Study Between Coal and Palm Kernel Shell as Feedstock

Mohd Dali,

Abd Rashid,

Ishak

et al. 2023

IJIE

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“…And those aggregates which have more dense and compact internal structures have been stronger in compression. From a concrete point of view, an aggregate must be lightweight as well as should have adequate strength and the balance between these two parameter of density and crushing strength has given rise to the coefficient of S/ρ A , for LWAs [47]. S/ρ A value is the ratio of crushing strength and particle density of aggregates.…”

Section: Compressive Strengthmentioning

confidence: 99%

Feasibility Study of Expanded Clay Aggregate Lightweight Concrete for Nonstructural Applications

Khan,

Hussain,

Khushnood

et al. 2024

Advances in Civil Engineering

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In nonstructural infill panels, common materials like expanded polystyrene panels face fire susceptibility, autoclaved aerated concrete (AAC) incurs high production costs, and traditional bricks come with a significant carbon footprint and weight. So, there is a requirement for infill panels that are not just resilient and lightweight but sustainable as well. This study seeks to address these issues by introducing sustainable and lightweight expanded clay aggregate (ECA) in concrete. Firstly, eight ECA mix designs were prepared by integrating fly ash and kerosene with clay, and ECA with a bulk density of 0.59 g/cm³ and compressive strength of up to 1.73 MPa were prepared. The lightest ECA mix was then chosen to explore their use in lightweight aggregate concrete (LWAC) along with fly ash as a secondary cementitious material. The resulting LWAC had a minimum density of 1,050 kg/m³ and a compressive strength of 6.8 MPa, fulfilling the standard requirements of a minimum of 3.5 MPa for nonstructural concrete.

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