Influence of fuel mixture and catalyst on the ethanol burner flue gas composition

Ryšavý, Jiří; Horák, Jiří; Krpec, Kamil; Hopan, František; Kuboňová, Lenka; Molchanov, Oleksandr

doi:10.1016/j.egyr.2022.10.181

Cited by 6 publications

(1 citation statement)

References 21 publications

(27 reference statements)

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“…Extensive research on catalytic promoter´s effect on the FTS conversion was done by Barrios et al [25]. Apart from the FTS, catalysts are also applied in denitrification [26] or flue gas purification processes [27,28]. During the FTS process, numerous chemical reactions take place, defined mainly by the following equations ( 1…”

Section: Introductionmentioning

confidence: 99%

Long-term performance of Co catalyst and Fischer-Tropsch synthesis setup under realistic conditions

Čespiva,

Charvát,

Skřínský

et al. 2023

Preprint

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Background Despite the sufficient description of the various catalytic processes, the data sets often lack a long-term oriented approach, thus examining unstable and temporary processes. Results In this study, an Al2O3-supported Co catalyst was applied in a small-scale Fischer-Tropsch synthesis under realistic conditions. A long-term performance was examined and evaluated. A tedious stabilisation regime was observed, taking around 78 hours of time-on-stream before the process was stabilised on a greater magnitude. The quantitative analysis showed significant differences in liquid production, where unstable process provided more excellent gas-to-liquid conversion, however, the selectivity of water was significant. The stabilised regime, on the other hand, performed well in terms of hydrocarbon production with 35%wt. share in the product. Conclusions This study points out the importance of proper stabilisation in the catalytic processes, which may require reasonable time in pilot and industrial-scale appliances.

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Section: Introductionmentioning

confidence: 99%

Long-term performance of Co catalyst and Fischer-Tropsch synthesis setup under realistic conditions

Čespiva,

Charvát,

Skřínský

et al. 2023

Preprint

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The co-combustion of pellets with pistachio shells in residential units additionally equipped by Pt-based catalyst

Ryšavý

Jana

Horák

et al. 2023

Biomass Conv. Bioref.

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There are several published studies evaluating the possibilities of thermal and non-thermal utilization of pistachio hard shells in many technical sectors; however, there are no relevant data about the possibilities of usage of this homogenous biomass-based by-product as a fuel for automatic household heating appliances for partial or full substitution of standard ENplus A1 pellets, which is the aim of the presented study. The composition and basic properties of both fuels were compared as well as the flue gas composition formed during the 6 different fuel mixture combustion in two real-scale pellet burners. The mass concentration of observed pollutants (CO, total suspended particles, and C3H8) in the flue gas was strongly affected by increasing of pistachio shell mass fraction in the fuel mixture (from 10 to 100%). In comparison to the combustion of ENplus A1 pellets, CO was increased up to 25.9 times, total suspended particles up to 15.3 times, and C3H8 up to 13.7 times. Based on the results of real combustion tests, the equations were listed, describing the increase of the mass concentration of pollutants for the whole spectrum of pellets/pistachio shell ratios applied on the chosen designs of the pellet burners. The Pt-based oxidation honeycomb catalyst, additionally installed at the combustion unit outlets for flue gas purification, showed conversion rates up to 82.2% in the case of CO and up to 33.1% in the case of C3H8. This enables the reaching of the same or lower mass concentrations of mentioned pollutants in the flue gas, formed during the co-combustion of appropriately selected fuel ratios in comparison to ENplus A1 pellet combustion without the catalyst.

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Bioethanol burner operating parameters optimization: Effects of burner opening area modulation on heat output and flue gas composition

Ryšavý,

Jaroch,

Horák

et al. 2024

Energy Conversion and Management: X

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Influence of fuel mixture and catalyst on the ethanol burner flue gas composition

Cited by 6 publications

References 21 publications

Long-term performance of Co catalyst and Fischer-Tropsch synthesis setup under realistic conditions

Long-term performance of Co catalyst and Fischer-Tropsch synthesis setup under realistic conditions

The co-combustion of pellets with pistachio shells in residential units additionally equipped by Pt-based catalyst

Bioethanol burner operating parameters optimization: Effects of burner opening area modulation on heat output and flue gas composition

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