A5035837126- Thermochemical Biomass Conversion Processes
- Coal and Its By-products
- Combustion and flame dynamics
- Recycling and Waste Management Techniques
- Forest Biomass Utilization and Management
- Biofuel production and bioconversion
- Coal Combustion and Slurry Processing
- Iron and Steelmaking Processes
- Combustion and Detonation Processes
- Heavy metals in environment
- Advanced Combustion Engine Technologies
- Coal Properties and Utilization
- Bioenergy crop production and management
- Fire dynamics and safety research
- Photovoltaic Systems and Sustainability
- Mineral Processing and Grinding
- Toxic Organic Pollutants Impact
- Mercury impact and mitigation studies
- Biodiesel Production and Applications
- Granular flow and fluidized beds
- Process Optimization and Integration
- Extraction and Separation Processes
- Integrated Energy Systems Optimization
- Advanced Power Generation Technologies
- Material Properties and Applications
Netherlands Organisation for Applied Scientific Research
2019-2023
Energy Research Centre of the Netherlands
2016-2018
National Laboratory of Energy and Geology
2011-2014
National Institute of Engineering, Technology and Innovation
2003-2009
Universidade do Porto
2004
University of Alicante
2004
Gasification in a bubbling fluidized bed reactor was introduced as sustainable technology to treat waste such tires. However, uncertainty arises when defining the most conditions for conducting gasification process. In this paper, eight experimental were analyzed. The experiments carried out at 700 and 850 °C with different equivalence ratios (ER) while using air gasifying agent. At effect of steam addition also studied. A Life Cycle Assessment (LCA) assessed product gas its energy content...
This work was undertaken with the aim of quantifing relative amounts NH3 and HCN released from different residues, which included sewage sludge, refuse derived fuel (RDF), sawdust, during their devolatilization under fluidized bed conditions. The results were compared data collected for bituminous coals origin (USA, South Africa, Colombia, UK). relation between levels NOX N2O formed cocombustion also addressed. partitioning nitrogen volatiles char quantified. pyrolysis studies in a small...
A techno-economic assessment on upgrading routes involving washing and torrefaction is presented for roadside grass, straw miscanthus. Washing followed by (prewash) (postwash) compared straw. Mass energy balances were calculated, based previous experimental test results. Calculated internal rates of return, total annuities payback times a sensitivity analysis identified the most critical input parameters profitability as being cost biomass, CAPEX, consumables sludge disposal. Application...
Waste tyres gasification in a bubbling fluidised bed reactor is evaluated by means of complete characterisation the product gas. The experiments are carried out at two temperatures, 700 and 850 °C, various equivalence ratios (ER) while using air as gasifying. Additionally, effect steam also studied °C. High temperature low ER increase production H2, CH4, C2H4. Steam addition mainly affects H2 CO production. Low carbon conversion (CC) into gas cold efficiency (CGE) obtained, increasing with...
The behavior of Cynara cardunculus L. was studied during fluidized-bed (FB) combustion and gasification. had a low moisture content considerable lower heating value (LHV). presented significant quantities S, Cl, ash, which contained high levels Na, K, P, Ca, Si. fuel N conversion to NOx because the large release NH3 HCN pyrolysis. S SO2 retention mainly as alkali sulfates. HCl emissions were higher than usual legal limits imposed in European Union (EU) countries, although retentions 40–55%...
A thermodynamic model was applied to foresee the occurrence of fouling, slagging, and bed agglomeration phenomena during fluidized monocombustion three different types biomass, namely straw pellets, olive cake, wood pellets. The cocombustion effect in reducing deposits agglomerates blends 5, 15, 25% (wt.) biomass with coal also assessed. Chemical fractionation evaluate reactive nonreactive fraction elements fuels, which used estimate their partition between freeboard bottom zone boiler....
Solid biofuels are currently used in increasing volumes to replace fossil equivalents. Next the traditional wood-derived fuels, advancement of biomass upgrading technologies like steam explosion (SE), followed by pelleting, further broadens variety materials on market. This thermochemical and mechanical improves greatly general properties such fuels (homogeneity, energy density, water resistance, biological decomposition, grindability, pneumatic transport, etc.) at same time offers...
The objective of the study was to investigate effect blending on emissions NOx and N2O during fluidized bed combustion five coals with different levels nitrogen, volatile matter, fixed carbon contents, diverse coal char petrographic composition. devolatilization chars were produced in a combustor. Using analyses coals, sixteen blends made carry out tests. individual carried an electrically heated atmospheric reached maximum values at temperature around 1173 K decreased lower temperatures....
This paper presents the study of combustion granular dry sewage sludge performed on a pilot fluidized bed system. The results monocombustion and co-combustion with coal were compared those for ash partitioning, formation gaseous pollutants, heavy metals behavior. It was found that mineral matter essentially retained as bottom ash. production fine small during but high due to tendency produce ash, which also contained unburned char. degree metal volatilization be slightly higher than in...