Catalyst Tests on a Pilot Plant for Small Biomass Combustion Systems

Hartmann, Ingo; Lenz, Volker; Schenker, Marian; Thiel, Christian T.; Einicke, Wolf‐Dietrich; Bindig, René; Roland, Ulf

doi:10.1002/cite.201000106

Cited by 3 publications

(8 citation statements)

References 4 publications

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“…Furthermore, another retrofit system named "KATI" exists at the DBFZ for which results have already been published in [2]. Standardized wood logs [12] were used as fuel during the experiments. The measurement of temperature and pressure inside the retrofit system and flue gas pipes were carried out with type K thermocouples and differential pressure sensors (type SDP 1000-L025, Manufacturer: SENSIRION) combined with Prandtl probes.…”

Section: Retrofit System and Wood Log Stovementioning

confidence: 99%

Application of Heterogeneous Catalysis in Small-Scale Biomass Combustion Systems

et al. 2012

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Combustion of solid biomass fuels for heat generation is an important renewable energy resource. The major part among biomass combustion applications is being played by small-scale systems like wood log stoves and small wood pellet burners, which account for 75% of the overall biomass heat production. Despite an environmentally friendly use of renewable energies, incomplete combustion in small-scale systems can lead to the emission of environmental pollutants as well as substances which are hazardous to health. Besides particles of ash and soot, a wide variety of gaseous substances can also be emitted. Among those, polycyclic aromatic hydrocarbons (PAH) and several organic volatile and semi-volatile compounds (VOC) are present. Heterogeneous catalysis is applied for the reduction of various gaseous compounds as well as soot. Some research has been done to examine the application of catalytic converters in small-scale biomass combustion systems. In addition to catalyst selection with respect to complete oxidation of different organic compounds, parameters such as long-term stability and durability under flue gas conditions are considered for use in biomass combustion furnaces. Possible catalytic procedures have been identified for investigation by literature and market research. Experimental studies with two selected oxidation catalysts based on noble metals have been carried out on a wood log stove with a retrofit system. The measurements have been performed under defined conditions based on practical mode of operation. The measurements have shown that the catalytic flue gas treatment is a promising method to reduce carbon monoxide and volatile organic compounds. Even a reduction of particulate matter was observed, although no filtering effect could be detected. Therefore, the oxidation of soot or soot precursors can OPEN ACCESSCatalysts 2012, 2 224 be assumed. The selected catalysts differed in their activity, depending on the compound to be oxidized. Examinations showed that the knitted wire catalyst showed better activity for the reduction of carbon monoxide, whereas the honeycomb induced a higher reduction of aromatic compounds. The properties of the two catalysts can be combined by integrating both together. The one drawback of the catalyst so far is the deactivation for the conversion of methane.

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Section: Retrofit System and Wood Log Stovementioning

confidence: 99%

Application of Heterogeneous Catalysis in Small-Scale Biomass Combustion Systems

et al. 2012

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“…Zur Charakterisierung der Zusammensetzung des Abgases für verschiedene praktische Einsatzfälle wurden unterschiedliche am Markt erhältliche Kaminöfen verschiedener Preiskategorien verwendet [14]. In Abb.…”

Section: Charakterisierung Des Abgasesunclassified

“…In Abb. 2 sind die Konzentrationsverläufe für ausgewählte Luftschadstoffe (CO, CH 4 , C 2 H 2 und die Summe der Aromaten) bei der Verbrennung von Buchenholz in drei unterschiedlichen Kaminöfen unter Naturzugbedingungen dargestellt, die ausführlich bereits in [14] diskutiert wurden. Am einfachen Kaminofen KO1 und am hochwertigen Kaminofen KO2 wurden auch Untersuchungen zur Abgasnachbehandlung durchgeführt.…”

Section: Charakterisierung Des Abgasesunclassified

“…Des Weiteren sind die Emissionen der PAK wegen der damit verbundenen akuten und/oder chronischen Toxizität zu nennen. Der grundsätzliche Mechanismus und die Ursachen der Bildung von toxischen organischen Verbindungen wie PAK bei unvollständigen Verbrennungsprozessen wurden in [14] dargestellt. In diesem Zusammenhang verdienen vor allem die Stoffgruppen der polychlorierten Dibenzo-p-dioxine und der Dibenzofurane (PCDD/PCDF) eine erhöhte Aufmerksamkeit und genaue Analyse.…”

Section: Introductionunclassified

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Exhaust Gas Purification at Small‐Scale Biomass Combustion and Experimental Investigation of a Combination of Catalytic and Electrostatic Exhaust Aftertreatment

Bindig

Hartmann

Christian

et al. 2011

Chemie Ingenieur Technik

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Kleinfeuerungsanlagen, die mit fester Biomasse betrieben werden, können in nicht unerheblichem Umfang toxische bzw. gesundheitsgefährdende Schadgase sowie Feinstaub emittieren. Eine repräsentative Auswahl der am Markt verfügbaren oder in aktuellen Forschungsprojekten in der Entwicklung befindlichen sekundären Emissionsminderungstechniken wird vorgestellt. Zurzeit ist kein System zur sekundären Emissionsminderung am Markt verfügbar, das den Ausstoß sowohl gasförmiger als auch fester bzw. kondensierter Luftschadstoffe wirksam vermindert. Eine Recherche zum Stand von Wissenschaft und Technik zeigt, dass elektrostatische Abscheider in Kombination mit der katalytischen Abgasreinigung eine aussichtsreiche sekundäre Technik darstellen. Experimentelle Arbeiten zur Untersuchung einer solchen Kombination werden vorgestellt.

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“…Over the past twenty years, several investigations have been published revealing the potential of catalysts and also the associated challenges. Noble metals and transition metal oxides have been used as catalytic materials [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. The activity is strongly dependent on the initial conditions defined by the combustion system, the fuel, and the used catalyst.…”

Section: Introductionmentioning

confidence: 99%

Catalyst Activity Characterization and Proper Integration in Small‐Scale Biomass Combustion Systems

Müller

Hartmann

2022

Chem Eng & Technol

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Catalysts can reduce emissions from biomass combustion systems. Efficient use in small-scale applications is challenging due to the variations of temperature, fluid flow, and flue gas composition. An analytical procedure was defined and evaluated with three commercial catalysts to realize efficient integration. The characterization included activity measurements at three facilities: a model gas analysis device, a laboratory-scale combustion system, and a wood log stove. The results demonstrate the possibilities of model gas analysis to define a scope of application and also the need for catalyst characterization under real operation conditions to determine the performance and stability of the final process. Temperature and gas hourly space velocity are the two main parameters influencing catalyst activity.

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Catalyst Tests on a Pilot Plant for Small Biomass Combustion Systems

Cited by 3 publications

References 4 publications

Application of Heterogeneous Catalysis in Small-Scale Biomass Combustion Systems

Application of Heterogeneous Catalysis in Small-Scale Biomass Combustion Systems

Exhaust Gas Purification at Small‐Scale Biomass Combustion and Experimental Investigation of a Combination of Catalytic and Electrostatic Exhaust Aftertreatment

Catalyst Activity Characterization and Proper Integration in Small‐Scale Biomass Combustion Systems

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