A5070302393- Thermochemical Biomass Conversion Processes
- Coal and Its By-products
- Parasites and Host Interactions
- Parasite Biology and Host Interactions
- Helminth infection and control
- Recycling and utilization of industrial and municipal waste in materials production
- Coal Combustion and Slurry Processing
- High-Temperature Coating Behaviors
- Metallurgical Processes and Thermodynamics
- Recycling and Waste Management Techniques
- Combustion and flame dynamics
- Corrosion Behavior and Inhibition
- Iron and Steelmaking Processes
- Granular flow and fluidized beds
- Thermal and Kinetic Analysis
- Catalytic Processes in Materials Science
- High Temperature Alloys and Creep
- Coal Properties and Utilization
- Vector-borne infectious diseases
- Coccidia and coccidiosis research
- Chemical Looping and Thermochemical Processes
- Renewable energy and sustainable power systems
- Forest Biomass Utilization and Management
- Advanced Power Generation Technologies
- Insect and Pesticide Research
Technical University of Denmark
2014-2023
Danish Technological Institute
2009
Umeå University
2009
Universidad de Zaragoza
2009
Laboratory of Research in Fluid Dynamics and Combustion Technologies
2009
University of North Dakota
2008
Centre for Agricultural Research
2000
Royal Agricultural University
1994-1996
Danish Centre for Marine Research
1974-1987
Marine Biological Laboratory
1976
The purpose of this paper is to review the present knowledge on ash formation, particle transport and deposition during solid fuel combustion, with emphasis sticking rebound behavior. A substantial part can be inorganic, forming inorganic vapors particles. impaction solid, molten or partially particles surfaces dependent surface characteristics. For instance, a particulate deposit might capture incoming removed due erosion, while layer will collect all impacting particles, no matter if they...
The release of critical ash-forming elements during the pyrolysis and combustion corn stover has been investigated through controlled lab-scale experiments supported by multicomponent multiphase thermodynamic equilibrium calculations. Fuel samples were treated under isothermal conditions ranging from 500 to 1150 °C, both atmospheres. volatilized material was quantified means mass balances based on char ash elemental analysis, compared a corresponding feedstock fuel analysis. Close relations...
Combustion of wood for heat and power production may cause problems such as ash deposition, corrosion, harmful emissions gases particulate matter. These are all directly related to the release inorganic elements (in particular Cl, S, K, Na, Zn, Pb) from fuel gas phase. The aims this study obtain quantitative data on during combustion investigate influence composition. Quantitative were obtained by pyrolyzing subsequently combusting small samples (∼30 g) at various temperatures in range...
When straw undergoes thermal treatment the initial process is a pyrolysis at which some K and Cl can be volatilized, this may result in problems with deposit formation corrosion of reactor containment. A laboratory batch was applied to study release transformation as function temperature, an heating rate approximately 50 °C/s. To facilitate interpretation experiments thermodynamic equilibrium calculations reducing condition were conducted, SEM (scanning electron microscopy) leaching...
Abstract 1. A cross-sectional prevalence study of gastrointestinal helminths in Danish poultry production systems was conducted on 268 adult chickens selected at random from 16 farms Denmark October 1994 to 1995. 2. The trachea and the tract each bird examined for presence helminths. 3. In free-range/organic following were found: Ascaridia galli (63 8%), Heterakis gallinarum (72 5%), Capillaria obsignata (53 6%), anatis (31 9%) caudinflata (1 5%). deep-litter systems: A. (41 9%), H. (19 4%)...
In this work, the sulfur transformations during thermal conversion of two straw samples have been experimentally investigated. Sulfur was found to be associated partly as inorganic sulfate (40−50% total S) and organic (50−40%) in typical Danish wheat samples. Batch pyrolysis combustion experiments were conducted a lab-scale tubular reactor order obtain quantitative information on devolatilization char burnout. The indicated that 35−50% released gas phase devolatilization. release...
During wood combustion, inorganic elements such as alkali metals, sulfur, chlorine, and some heavy metals are partly released to the gas phase, which may cause problems in combustion facilities because of deposit formation corrosion. Furthermore, it harmful emissions gases particulate matter. The aim this study is obtain quantitative data on release during will serve input for models aiming address ash-related problems. Three quantification methods were developed. In all three methods, was...
Release of potassium (K) during biomass combustion, may cause significant operating problems in terms ash deposition and high-temperature corrosion superheater tubes. Other ash-forming elements, such as calcium (Ca), silicon (Si), phosphorus (P), to a certain degree control the K release. The aim this work was study release from simple systems, obtain information on retaining effects elements Ca, Si, P. Further objectives were investigate temperature, presence water vapor, speciation sample...
The release and transformation of inorganic elements during grate-firing bran was studied via experiments in a laboratory-scale reactor, analysis fly ash from grate-fired plant, equilibrium modeling. It found that K, P, S, to lesser extent Cl Na were released the gas phase combustion. Laboratory-scale showed S almost fully vaporized pyrolysis below 700 °C. Sixty seventy percent K P combustion, temperature range 900–1100 presumably attributed vaporization KPO3 generated thermal decomposition...