Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"brown coal"”.
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Untersuchungen zum Verschmutzungsverhalten rheinischer Braunkohlen in Kohledampferzeugern
… exchangers can be observed while firing Rhenish brown coals rich in sodium and poor in silicon content. These sulphatic and oxidic deposits reduce the heat transfer and can cause plant damage. It is assumed that fouling is caused by ash softening and partial melting of alkaline phases. The …
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Collaborative Simulation of Reacting Flow and Controller in Chemical Looping Systems
… loop CLG system for H2 production by Victorian brown coal (VBC), where the fuel leakage is actively mitigated for enhancing H2 productivity. 4. A soft real-time digital twin of a full loop CLG system fuelled by solid waste is developed based on the collaborative method. The digital twin operates …
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An Experimental Investigation of the Role of Small Hydrocarbons and Combustion-Generated Nanoparticles on the Formation and Growth Reactions of Polycyclic Aromatic Hydrocarbons during the Pyrolysis of a Model-Fuel and Hydrocarbon Gases
… representative of aromatic moieties in coal and biomass fuels; and with propyne and catechol together. Further, to better understand the role of fuel components and their decomposition products in PAH growth reactions, pyrolysis and co-pyrolysis experiments are performed using …
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Amide and Ester-Functionalized Humic Acid for Fuel Combustion Enhancement
… These naturally occurring molecules are found in brown coal deposits near lignite formations. Humic acid has gained attention from the scientific community as a precursor for graphene. Graphene is a 2-dimensional honeycomb structure of fully unsaturated carbon atoms that has exceptional material …
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Trocknung von Braunkohlen mittels hochfrequenter-elektromagnetischer Strahlung unter besonderer Berücksichtigung der Braunkohlen des rheinischen Reviers
… degradation of the carbon structure within the coal molecules. Taking this into consideration the volatile matter of each sample was surveyed. The microwave drying process was conducted in two steps. The first focussed on the fundamentals of the process while the second addressed the up-scaling …
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Pásový dopravník přestavitelný - stanice pohonu
Cílem předkládané bakalářské práce bylo navrhnout stanici pohonu přestavitelného pásového dopravníku určeného pro dopravu hnědého uhlí. Na základě požadovaných parametrů pásového dopravníku byl proveden funkční výpočet, byly definovány technické parametry stanice pohonu a navrženo její konstrukční …
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Strukturelle Merkmale N-modifizierter Braunkohlen unter besonderer Berücksichtigung der Huminstoffe
Motiviert durch die Zunahme der weltweiten Nachfrage nach hochwertigen Humusstoffen wurde am Institut für Holz- und Pflanzenchemie ein neuartiger Humusersatzstoff entwickelt. Dieses N-modifizierte Produkt wird auf Basis eines patentierten Normaldruckverfahrens der oxidativen Ammonolyse (OA) aus …