Decomposition of benzene using char aerosol particles dispersed in a high-temperature filter

Morgalla, Mario; Lin, Leteng; Strand, Michael

doi:10.1016/j.energy.2016.11.016

Cited by 14 publications

(11 citation statements)

References 40 publications

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“…Benzene was also selected as tar surrogate since this molecule is produced in significant amount by tar cracking and gasification reactions [44]. In addition, benzene cracking reaction allows efficiently evaluating the tar cracking activity of the catalysts since benzene is one of the most refractory compounds contained in tar [45]. For these reasons, the benzene cracking tests were performed at higher temperatures (850 and 950°C).…”

Section: Introductionmentioning

confidence: 99%

Reactivity and deactivation mechanisms of pyrolysis chars from bio-waste during catalytic cracking of tar

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Reactivity and deactivation mechanisms of pyrolysis chars from bio-waste during catalytic cracking of tar

et al. 2019

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“…Another disadvantage is the consumption (i.e., gasification) of the char in fixed beds. Recently, an aerosol-based method was designed and tested for tar conversion 17 using very small and finely dispersed char particles that might avoid potential mass transport limitations. This method was also used to investigate the benzene conversion behavior while continuously supplying fresh char particles.…”

Section: Introductionmentioning

confidence: 99%

Benzene Conversion in a Packed Bed Loaded with Biomass Char Particles

2017

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This study investigates the conversion of benzene in a packed bed containing fine char particles. Benzene and steam were simultaneously supplied to a tubular ceramic reactor that was heated electrically. Fragmented char particles were suspended and continuously supplied via a separate supply line. A packed bed of crushed alumina balls was positioned in the reactor to retain the char particles. The benzene conversion in the hot char bed was investigated by varying the bed temperature (900−1100 °C), steam concentration (0−27 vol %), and char concentration (5−50 g Nm −3 ). The highest conversions achieved in the experiments were approximately 75%. At comparable char concentrations, similar benzene conversions occurred at 900 and 1000 °C. Increasing the temperature to 1100 °C or increasing the steam concentration reduced the benzene conversion. The results indicate that the reduced conversion was due to enhanced char gasification reactions at elevated temperatures and steam concentrations and thus to reduced char mass in the packed bed.

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“…Char promotes MAH and PAH decomposition, depositing coke onto its micropore structure as a part of volatile–char interactions (VCIs). The occupied pores can be regenerated by steam reforming at a rate equivalent to that of the deposition if char retains a certain concentration of AAEM species. − Meanwhile, the existence of low activity but the nonconsumptive site is also revealed . Since VCI that promotes volatilization of AAEM species , inhibits char gasification, segregation of char, in other words, spatial isolation of char for VCI and that for gasification, seems to be a possible option for in situ tar elimination in low-temperature gasification …”

Section: Thermochemical Conversion Of Solid Fuelsmentioning

confidence: 99%

A Review on Detailed Kinetic Modeling and Computational Fluid Dynamics of Thermochemical Processes of Solid Fuels

et al. 2021

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This review presents the recent advances in computational approaches to understand thermochemical reactions of solid fuels with minimized empirical factors. It includes studies on kinetic modeling of gas-phase reactions of multicomponent molecular mixtures of volatiles derived from primary pyrolysis of solid fuels using a database for elementary reactions. Mechanistic studies to model the devolatilization of biomass and coal upon heating are also mentioned. The efforts to integrate the kinetic model with computational fluid dynamics to understand the flow and heat transfer behavior of industrial reactors for solid fuel conversions, including gasification and combustion, are reviewed. These advances are primarily based on the conventional forward analysis that provides a deeper understanding of chemically reacting flows of fuels undergoing thermochemical reactions. For the further development of the thermochemical conversion technology, it can be expected to develop alternative approaches such as inverse analysis to determine the optimal reactor design and operating conditions.

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Decomposition of benzene using char aerosol particles dispersed in a high-temperature filter

Cited by 14 publications

References 40 publications

Reactivity and deactivation mechanisms of pyrolysis chars from bio-waste during catalytic cracking of tar

Reactivity and deactivation mechanisms of pyrolysis chars from bio-waste during catalytic cracking of tar

Benzene Conversion in a Packed Bed Loaded with Biomass Char Particles

A Review on Detailed Kinetic Modeling and Computational Fluid Dynamics of Thermochemical Processes of Solid Fuels

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