Tackling the challenges in modelling entrained-flow gasification of low-grade feedstock

Kolb, Thomas; Aigner, Manfred; Kneer, Reinhold; Müller, Michael; Weber, Roman; Djordjevic, Neda

doi:10.1016/j.joei.2015.07.007

Cited by 45 publications

(24 citation statements)

References 78 publications

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“…As a consequence of the current interest in renewable, CO2-neutral energy sources, the share of biomass in the fuel feedstock increases, and so does the demand for improved process efficiency and fuel-flexibility, which, in turn, requires a better understanding of thermochemical biomass conversion [3]. Research-and pilot-scale entrained flow reactors (EFRs) that resemble industrial systems with high heating rates and short residence times [4] are valuable tools to investigate fuel conversion [5] and ash formation [6,7], and to improve process modelling by validation of kinetic models [8,9] and computational fluid dynamics (CFD) simulations [10,11]. If equipped with optical access windows, such droptube reactors allow studying the progress of fuel conversion online via in situ measurements in the reaction zone.…”

Section: Introductionmentioning

confidence: 99%

Distribution of temperature, H2O and atomic potassium during entrained flow biomass combustion – Coupling in situ TDLAS with modeling approaches and ash chemistry

Holmgren

Skoglund

et al. 2018

Combustion and Flame

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Tunable diode laser absorption spectroscopy (TDLAS) is employed for simultaneous detection of gas temperature, water vapor (H2O) and gas-phase atomic potassium, K(g), in an atmospheric, research-scale entrained flow reactor (EFR). In situ measurements are conducted at four different locations in the EFR core to study the progress of thermochemical conversion of softwood and Miscanthus powders with focus on the primary potassium reactions. In an initial validation step during propane flame operation, the measured axial EFR profiles of H2O density-weighted, path-averaged temperature, path-averaged H2O concentration and H2O column density are found in good agreement with 2D CFD simulations and standard flue gas analysis. During biomass conversion, temperature and H2O are significantly higher than for the propane flame, up to 1500 K and 9%, respectively, and K(g) concentrations between 0.2 and 270

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Section: Introductionmentioning

confidence: 99%

Distribution of temperature, H2O and atomic potassium during entrained flow biomass combustion – Coupling in situ TDLAS with modeling approaches and ash chemistry

Holmgren

Skoglund

et al. 2018

Combustion and Flame

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“…Accompanying research into the bioliq entrained-flow gasifier is being carried out within the Energy Efficiency, Materials, and Resources (EMR) energy research program of the HGF and the Helmholtz Virtual Institute Gasification Technology (HVIGas-Tech) joint research cooperation [9]. This is where the following subprocesses are being studied: (i) atomization of high-viscosity suspensions under pressure [10], (ii) heterogeneous reaction kinetics of coke particles [11], (iii) heat transport of particles and gas at high pressure [12], and (iv) slag production and factors influencing slag flow [13].…”

Section: Evaluation Of Operating Runsmentioning

confidence: 99%

The bioliq® Entrained‐Flow Gasifier – A Model for the German Energiewende

et al. 2020

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The bioliq process was developed at the Karlsruhe Institute of Technology (KIT) for the production of synthetic fuels from dry biomass residues. Biofuels of high quality are produced sustainably in various process steps. This multistage process not only considers the necessity for decentralized supply of the biomass, but also the necessity for a large centralized fuel synthesis that benefits from economy of scale. The entire process chain of pyrolysis, gasification, gas cleaning, and synthesis is operated on a pilot scale at KIT. The high-pressure entrained-flow gasifier converts the biomass, pretreated in a fast pyrolysis step, into a synthesis gas for the production of gasoline in the subsequent synthesis step. The first experimental results from the pilot plant are presented in this paper.

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“…Im Energieforschungsprogramm Energieeffizienz, Materialien und Ressourcen , der HGF und im Forschungsverbund Helmholtz Virtual Institute Gasification Technology (HVIGasTech) wird die Begleitforschung zum bioliq®‐Flugstromvergaser durchgeführt. Hier werden die Teilprozesse (i) Zerstäubung von hochviskosen Suspensionen unter Druck , (ii) heterogene Reaktionskinetik von Kokspartikeln , (iii) Wärmetransport von Partikel und Gas bei hohem Druck , (iv) Schlackebildung und Beeinflussung des Schlackefließverhaltens erforscht und Messtechniken für die Anwendung in der Hochdruckflugstromvergasung entwickelt.…”

Section: Auswertung Der Betriebsfahrtenunclassified

The bioliq® Entrained‐Flow Gasifier – a Module for the German Energiewende

Eberhard

Santo

Böning

et al. 2018

Chemie Ingenieur Technik

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Das bioliq®‐Verfahren wurde am Karlsruher Institut für Technologie (KIT) zur Herstellung von synthetischen Kraftstoffen aus Restbiomasse entwickelt. Das mehrstufige Verfahren berücksichtigt sowohl die dezentrale Verfügbarkeit von Biomasse als auch die Notwendigkeit einer großtechnischen Synthese von Kraftstoffen. Der gesamte Prozess wird im Pilotmaßstab am KIT betrieben. Der Hochdruckflugstromvergaser, von Air Liquide Global E&C Solutions, wandelt die in einer Schnellpyrolyse vorbehandelte Biomasse in Synthesegas um, das in der anschließenden Synthese zur Benzinproduktion eingesetzt wird. Erste Ergebnisse der Anlage werden präsentiert.

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Tackling the challenges in modelling entrained-flow gasification of low-grade feedstock

Abstract: Tackling the challenges in modelling entrained-flow gasification of low-grade feedstock, J.

Cited by 45 publications

References 78 publications

Distribution of temperature, H2O and atomic potassium during entrained flow biomass combustion – Coupling in situ TDLAS with modeling approaches and ash chemistry

Distribution of temperature, H2O and atomic potassium during entrained flow biomass combustion – Coupling in situ TDLAS with modeling approaches and ash chemistry

The bioliq® Entrained‐Flow Gasifier – A Model for the German Energiewende

The bioliq® Entrained‐Flow Gasifier – a Module for the German Energiewende

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