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Günter Scheffknecht - One of the best experts on this subject based on the ideXlab platform.

  • fly ash formation and characteristics from co combustion of an Herbaceous Biomass and a greek lignite low rank coal in a pulverized fuel pilot scale test facility
    Energies, 2018
    Co-Authors: A. Fuller, J. Kalivodova, Jörg Maier, Emmanouil Karampinis, Panagiotis Grammelis, Emmanuel Kakaras, Günter Scheffknecht
    Abstract:

    The lignite boilers are designed for lower quality fuels, and often the ash is not utilized. This work assessed the impact of combustion of an Herbaceous Biomass with a low-quality Greek lignite on the quality of the resulting fly ash. Test results were compared with those of fly ash samples from an industrial facility using the same fuel qualities. Inductively coupled plasma-optical (ICP) emission spectroscopy, X-ray powder diffraction (XRD), and scanning electron microscope (SEM) analyses were performed on the collected samples. Despite the significantly higher contents of K, Na and S in the Biomass, at a 50% co-firing thermal share, the major and minor oxides in the fly ash were comparable to the lignite fly ash quality. This is attributed to the high ash content of the lignite, the low ash content of the Biomass, and the much higher heating value of the Biomass. There were improvements in fly ash performance characteristics with the Herbaceous Biomass in the fuel blend. The initial setting time and volume stability evaluations were improved with the Biomass in the fuel blend. The work supports efforts of good practices in ash management, social responsibility, a circular economy, power plant renewable energy operations, and co-firing Herbaceous Biomass fuels in lignite power plants.

  • Results of fly ash quality for disposal options from high thermal shares up to pure Biomass combustion in a pilot-scale and large scale pulverized fuel power plants
    Renewable Energy, 2015
    Co-Authors: A. Fuller, Marta Carbó, P. Savat, J. Kalivodova, Jörg Maier, Günter Scheffknecht
    Abstract:

    This work evaluated fly ash quality from combustion of high thermal shares of Biomass fuels. Woody Biomass was (co)combusted in an industrial scale pulverized fuel power plant, and a Herbaceous Biomass was co-combusted in a pilot-scale test facility. Ashes from the electrostatic precipitator were collected and evaluated for chemical compounds, leaching behavior, and mechanical properties. Results from the large-scale industrial pulverized fuel showed the ashes still had good reactivity and mechanical properties according to EN450-1, which is a good unexpected occurrence regarding strength development. Results from the pilot-scale test facility showed that a Herbaceous Biomass co-fired up to 50% thermal share does not seem to have any negative impact on existing fly ash utilization routes. It is concluded that co-firing clean woody Biomass at a very high thermal share and co-firing a high thermal share of a Herbaceous Biomass with lignite would not change current utilization practices. In practice ashes from high thermal shares are not used due to safeguards in standards form a lack of experience from enough performance testing. Thus, the findings can lead to support for standards that incorporate other assessment methods for Biomass fly ash utilization requirements.

A. Fuller - One of the best experts on this subject based on the ideXlab platform.

  • fly ash formation and characteristics from co combustion of an Herbaceous Biomass and a greek lignite low rank coal in a pulverized fuel pilot scale test facility
    Energies, 2018
    Co-Authors: A. Fuller, J. Kalivodova, Jörg Maier, Emmanouil Karampinis, Panagiotis Grammelis, Emmanuel Kakaras, Günter Scheffknecht
    Abstract:

    The lignite boilers are designed for lower quality fuels, and often the ash is not utilized. This work assessed the impact of combustion of an Herbaceous Biomass with a low-quality Greek lignite on the quality of the resulting fly ash. Test results were compared with those of fly ash samples from an industrial facility using the same fuel qualities. Inductively coupled plasma-optical (ICP) emission spectroscopy, X-ray powder diffraction (XRD), and scanning electron microscope (SEM) analyses were performed on the collected samples. Despite the significantly higher contents of K, Na and S in the Biomass, at a 50% co-firing thermal share, the major and minor oxides in the fly ash were comparable to the lignite fly ash quality. This is attributed to the high ash content of the lignite, the low ash content of the Biomass, and the much higher heating value of the Biomass. There were improvements in fly ash performance characteristics with the Herbaceous Biomass in the fuel blend. The initial setting time and volume stability evaluations were improved with the Biomass in the fuel blend. The work supports efforts of good practices in ash management, social responsibility, a circular economy, power plant renewable energy operations, and co-firing Herbaceous Biomass fuels in lignite power plants.

  • Results of fly ash quality for disposal options from high thermal shares up to pure Biomass combustion in a pilot-scale and large scale pulverized fuel power plants
    Renewable Energy, 2015
    Co-Authors: A. Fuller, Marta Carbó, P. Savat, J. Kalivodova, Jörg Maier, Günter Scheffknecht
    Abstract:

    This work evaluated fly ash quality from combustion of high thermal shares of Biomass fuels. Woody Biomass was (co)combusted in an industrial scale pulverized fuel power plant, and a Herbaceous Biomass was co-combusted in a pilot-scale test facility. Ashes from the electrostatic precipitator were collected and evaluated for chemical compounds, leaching behavior, and mechanical properties. Results from the large-scale industrial pulverized fuel showed the ashes still had good reactivity and mechanical properties according to EN450-1, which is a good unexpected occurrence regarding strength development. Results from the pilot-scale test facility showed that a Herbaceous Biomass co-fired up to 50% thermal share does not seem to have any negative impact on existing fly ash utilization routes. It is concluded that co-firing clean woody Biomass at a very high thermal share and co-firing a high thermal share of a Herbaceous Biomass with lignite would not change current utilization practices. In practice ashes from high thermal shares are not used due to safeguards in standards form a lack of experience from enough performance testing. Thus, the findings can lead to support for standards that incorporate other assessment methods for Biomass fly ash utilization requirements.

Jörg Maier - One of the best experts on this subject based on the ideXlab platform.

  • fly ash formation and characteristics from co combustion of an Herbaceous Biomass and a greek lignite low rank coal in a pulverized fuel pilot scale test facility
    Energies, 2018
    Co-Authors: A. Fuller, J. Kalivodova, Jörg Maier, Emmanouil Karampinis, Panagiotis Grammelis, Emmanuel Kakaras, Günter Scheffknecht
    Abstract:

    The lignite boilers are designed for lower quality fuels, and often the ash is not utilized. This work assessed the impact of combustion of an Herbaceous Biomass with a low-quality Greek lignite on the quality of the resulting fly ash. Test results were compared with those of fly ash samples from an industrial facility using the same fuel qualities. Inductively coupled plasma-optical (ICP) emission spectroscopy, X-ray powder diffraction (XRD), and scanning electron microscope (SEM) analyses were performed on the collected samples. Despite the significantly higher contents of K, Na and S in the Biomass, at a 50% co-firing thermal share, the major and minor oxides in the fly ash were comparable to the lignite fly ash quality. This is attributed to the high ash content of the lignite, the low ash content of the Biomass, and the much higher heating value of the Biomass. There were improvements in fly ash performance characteristics with the Herbaceous Biomass in the fuel blend. The initial setting time and volume stability evaluations were improved with the Biomass in the fuel blend. The work supports efforts of good practices in ash management, social responsibility, a circular economy, power plant renewable energy operations, and co-firing Herbaceous Biomass fuels in lignite power plants.

  • Results of fly ash quality for disposal options from high thermal shares up to pure Biomass combustion in a pilot-scale and large scale pulverized fuel power plants
    Renewable Energy, 2015
    Co-Authors: A. Fuller, Marta Carbó, P. Savat, J. Kalivodova, Jörg Maier, Günter Scheffknecht
    Abstract:

    This work evaluated fly ash quality from combustion of high thermal shares of Biomass fuels. Woody Biomass was (co)combusted in an industrial scale pulverized fuel power plant, and a Herbaceous Biomass was co-combusted in a pilot-scale test facility. Ashes from the electrostatic precipitator were collected and evaluated for chemical compounds, leaching behavior, and mechanical properties. Results from the large-scale industrial pulverized fuel showed the ashes still had good reactivity and mechanical properties according to EN450-1, which is a good unexpected occurrence regarding strength development. Results from the pilot-scale test facility showed that a Herbaceous Biomass co-fired up to 50% thermal share does not seem to have any negative impact on existing fly ash utilization routes. It is concluded that co-firing clean woody Biomass at a very high thermal share and co-firing a high thermal share of a Herbaceous Biomass with lignite would not change current utilization practices. In practice ashes from high thermal shares are not used due to safeguards in standards form a lack of experience from enough performance testing. Thus, the findings can lead to support for standards that incorporate other assessment methods for Biomass fly ash utilization requirements.

J. Kalivodova - One of the best experts on this subject based on the ideXlab platform.

  • fly ash formation and characteristics from co combustion of an Herbaceous Biomass and a greek lignite low rank coal in a pulverized fuel pilot scale test facility
    Energies, 2018
    Co-Authors: A. Fuller, J. Kalivodova, Jörg Maier, Emmanouil Karampinis, Panagiotis Grammelis, Emmanuel Kakaras, Günter Scheffknecht
    Abstract:

    The lignite boilers are designed for lower quality fuels, and often the ash is not utilized. This work assessed the impact of combustion of an Herbaceous Biomass with a low-quality Greek lignite on the quality of the resulting fly ash. Test results were compared with those of fly ash samples from an industrial facility using the same fuel qualities. Inductively coupled plasma-optical (ICP) emission spectroscopy, X-ray powder diffraction (XRD), and scanning electron microscope (SEM) analyses were performed on the collected samples. Despite the significantly higher contents of K, Na and S in the Biomass, at a 50% co-firing thermal share, the major and minor oxides in the fly ash were comparable to the lignite fly ash quality. This is attributed to the high ash content of the lignite, the low ash content of the Biomass, and the much higher heating value of the Biomass. There were improvements in fly ash performance characteristics with the Herbaceous Biomass in the fuel blend. The initial setting time and volume stability evaluations were improved with the Biomass in the fuel blend. The work supports efforts of good practices in ash management, social responsibility, a circular economy, power plant renewable energy operations, and co-firing Herbaceous Biomass fuels in lignite power plants.

  • Results of fly ash quality for disposal options from high thermal shares up to pure Biomass combustion in a pilot-scale and large scale pulverized fuel power plants
    Renewable Energy, 2015
    Co-Authors: A. Fuller, Marta Carbó, P. Savat, J. Kalivodova, Jörg Maier, Günter Scheffknecht
    Abstract:

    This work evaluated fly ash quality from combustion of high thermal shares of Biomass fuels. Woody Biomass was (co)combusted in an industrial scale pulverized fuel power plant, and a Herbaceous Biomass was co-combusted in a pilot-scale test facility. Ashes from the electrostatic precipitator were collected and evaluated for chemical compounds, leaching behavior, and mechanical properties. Results from the large-scale industrial pulverized fuel showed the ashes still had good reactivity and mechanical properties according to EN450-1, which is a good unexpected occurrence regarding strength development. Results from the pilot-scale test facility showed that a Herbaceous Biomass co-fired up to 50% thermal share does not seem to have any negative impact on existing fly ash utilization routes. It is concluded that co-firing clean woody Biomass at a very high thermal share and co-firing a high thermal share of a Herbaceous Biomass with lignite would not change current utilization practices. In practice ashes from high thermal shares are not used due to safeguards in standards form a lack of experience from enough performance testing. Thus, the findings can lead to support for standards that incorporate other assessment methods for Biomass fly ash utilization requirements.

Trubetskaya Anna - One of the best experts on this subject based on the ideXlab platform.

  • Removal of phenol and chlorine from wastewater using steam activated Biomass soot and tire carbon black
    'Elsevier BV', 2020
    Co-Authors: Trubetskaya Anna, Kling Jens, Ershag Olov, Attard Thomas, Schröder Elisabeth
    Abstract:

    peer-reviewedThis study aims to demonstrate a novel method for removing toxic chemicals using soot produced from wood and Herbaceous Biomass pyrolyzed in a drop tube reactor and tire pyrolytic carbon black. The influence of ash content, nanostructure, particle size, and porosity on the filter efficiency of steam activated carbon materials was studied. It has been shown for the first time that steam activated soot and carbon black can remove phenol and chloride with the filter efficiencies as high as 95 %. The correlation of the filter efficiency to material properties showed that the presence of alkali and steam activation time were the key parameters affecting filter efficiencies. This study shows that steam activated Biomass soot and tire carbon black are promising alternatives for the wastewater cleaning

  • Potassium and soot interaction in fast Biomass pyrolysis at high temperatures
    'Elsevier BV', 2020
    Co-Authors: Trubetskaya Anna, Larsen, Flemming Hofmann, Shchukarev Andrey, Ståhl Kenny, Umeki Kentaro
    Abstract:

    peer-reviewedThis study aims to investigate the interaction between potassium and carbonaceous matrix of soot produced from wood and Herbaceous Biomass pyrolysis at high heating rates at 1250 C in a drop tube reactor. The in uence of soot carbon chemistry and potassium content in the original Biomass on the CO2 reactivity was studied by thermogravimetric analysis. The XPS results showed that potassium incorporation with oxygen-containing surface groups in the soot matrix did not occur during high temperature pyrolysis. The potassium was mostly found as water-soluble salts such as KCl, KOH, KHCO3 and K2CO3 in Herbaceous Biomass soot. The low ash-containing pinewood soot was less reactive than the potassium rich Herbaceous Biomass soot, indicating a dominating role of potassium on the soot reactivity. However, the catalytic e ect of potassium on the reactivity remained the same after a certain potassium amount was incorporated in the soot matrix during pyrolysis. Raman spectroscopy results showed that the carbon chemistry of Biomass soot also a ected the CO2 reactivity. The less reactive pinewood soot was more graphitic than Herbaceous Biomass soot samples with the disordered carbon structure

  • Characterization of renewable reductants and charcoal-based pellets for the use in ferroalloy industries
    'Elsevier BV', 2020
    Co-Authors: Surup, Gerrit Ralf, Trubetskaya Anna, Vehus Tore, Eidem Per-anders, Nielsen, Henrik Kofoed
    Abstract:

    peer-reviewedThis study investigates the effect of high-temperature pyrolysis and post-treatment processes on spruce and oak charcoal yields and CO2 reactivity in a slow pyrolysis reactor. Post-treatment processes such as co-pyrolysis of Biomass and recirculated tar mixture with that to the distillation of the charcoal-tar blend gave similar increase in charcoal yields. From a technological standpoint, co-pyrolysis of charcoal and tar mixture decreased the CO2 reactivity of the charcoal approaching that of fossil-based coke. This emphasize the importance of tar addition and high temperature treatment on charcoal properties. Moreover, the findings of this work show the potential use of the tar organic fractions as a binder that can be used for the charcoal pellet preparation. The results are promising as they show that the charcoal-based pellets have comparable properties of pellets from Herbaceous Biomass leading to the cost reduction in charcoal transportation and storage

  • Removal of phenol and chlorine from wastewater using steam activated Biomass soot and tire carbon black
    Elsevier, 2019
    Co-Authors: Trubetskaya Anna, Kling Jens, Ershag Olov, Attard Thomas, Schröder Elisabeth
    Abstract:

    The full text of this article will not be available in ULIR until the embargo expires on the 30/20/2020This study aims to demonstrate a novel method for removing toxic chemicals using soot produced from wood and Herbaceous Biomass pyrolyzed in a drop tube reactor and tire pyrolytic carbon black. The influence of ash content, nanostructure, particle size, and porosity on the filter efficiency of steam activated carbon materials was studied. It has been shown for the first time that steam activated soot and carbon black can remove phenol and chloride with the filter efficiencies as high as 95 %. The correlation of the filter efficiency to material properties showed that the presence of alkali and steam activation time were the key parameters affecting filter efficiencies. This study shows that steam activated Biomass soot and tire carbon black are promising alternatives for the wastewater cleaning

  • Removal of phenol and chlorine from wastewater using steam activated Biomass soot and tire carbon black
    'Elsevier BV', 2019
    Co-Authors: Trubetskaya Anna, Kling Jens, Ershag Olov, Attard, Thomas M., Schröder Elisabeth
    Abstract:

    This study aims to demonstrate a novel method for removing toxic chemicals using soot produced from wood and Herbaceous Biomass pyrolyzed in a drop tube reactor and tire pyrolytic carbon black. The influence of ash content, nanostructure, particle size, and porosity on the filter efficiency of steam activated carbon materials was studied. It has been shown for the first time that steam activated soot and carbon black can remove phenol and chloride with the filter efficiencies as high as 95 %. The correlation of the filter efficiency to material properties showed that the presence of alkali and steam activation time were the key parameters affecting filter efficiencies. This study shows that steam activated Biomass soot and tire carbon black are promising alternatives for the wastewater cleaning