A5089841320- Thermochemical Biomass Conversion Processes
- Chemical Looping and Thermochemical Processes
- Coal and Its By-products
- Iron and Steelmaking Processes
- High-Temperature Coating Behaviors
- Granular flow and fluidized beds
- Catalytic Processes in Materials Science
- Thermal and Kinetic Analysis
- Industrial Gas Emission Control
- Nuclear Materials and Properties
- Intermetallics and Advanced Alloy Properties
- Coal Combustion and Slurry Processing
- Metal Extraction and Bioleaching
- Recycling and Waste Management Techniques
- Corrosion Behavior and Inhibition
- Carbon Dioxide Capture Technologies
- Metallurgical Processes and Thermodynamics
- Heavy metals in environment
- Mineral Processing and Grinding
- Recycling and utilization of industrial and municipal waste in materials production
- Algal biology and biofuel production
- High Temperature Alloys and Creep
- Wastewater Treatment and Reuse
- Bioenergy crop production and management
- Water resources management and optimization
Chalmers University of Technology
2015-2025
The current study presents for the first time how recovered carbon black (rCB) obtained directly from industrial-scale end-of-life tires (ELTs) pyrolysis sector is applied as a precursor activated carbons (ACs) with application in CO2 capture. rCB shows better physical characteristics, including density and structure, well chemical properties, such consistent composition low impurity concentration, comparison to pyrolytic char. Potassium hydroxide air combination heat treatment (500–900 °C)...
Abstract This paper presents the main experiences gained and conclusions drawn from demonstration of a first‐of‐its‐kind wood‐based biomethane production plant (20‐ MW capacity, 150 dry tonnes biomass/day) 10 years operation 2–4‐ (10–20 research gasifier at Chalmers University Technology in Sweden. Based on experience gained, an elaborated outline for commercialization technology wide spectrum applications end products is defined. The findings are related to use biomass ash constituents as...
Both agglomeration of bed material and corrosion heat transfer equipment are issues related to combustion biomass in a fluidized boiler. The biomass-ash component potassium is considered major contributor for both phenomena. In this study, the conventionally used material, silica sand, was replaced with up 40 wt % by natural ore ilmenite Chalmers 12 MWth circulating (CFB) study purpose evaluate physical chemical changes undergoes during process. Close observations revealed that underwent...
Biomass is recognized as a CO2-neutral energy resource. However, biomass challenging fuel to combust because of its heterogeneity with regard the content inorganic constituents, volatiles, and moisture. Oxygen carrier aided combustion (OCAC) process advancement that provides enhanced in existing circulating fluidized bed (CFB) units. The oxygen has central role OCAC concept through transport it provides. natural mineral ilmenite (FeTiO3) been identified promising potential carrier. In order...
Carbon capture and storage (CCS) can be used to mitigate climate change. Chemical-looping combustion (CLC) is an innovative carbon-capture technology with potential drastically reduce the cost. In CLC, oxygen transported from air fuel by means of metal-oxide particles, called carrier. This work presents findings a 100 kW CLC reactor system, which designed as interconnected fluidized beds. The unit was operated ilmenite Swedish wood char Mexican petcoke, both having low volatile content, were...
The capability of ilmenite for potassium uptake in a simulated oxygen carrier-aided combustion environment has been investigated. maximum and the effect inclusion on Fe–Ti–O system was analyzed. Through laboratory experiments thermodynamic calculations, it found that molar ratio 1:1 can be formed spontaneously both K–Ti-system (where formation K2Ti2O5 found) K–Fe-system KFeO2 found). identified as an unstable phase, undergoing decomposition into K2Ti4O9. study demonstrates K uptake, through...
This study explores the conversion of recovered carbon black (rCB) from end-of-life tires (ELTs) into activated carbons (ACs) using potassium-based activators, targeting enhanced textural properties development. The research focuses on interaction between potassium and rCB, with aim understanding underlying mechanisms rCB activation. investigates several parameters KOH activation, including KOH/rCB mass ratio (1:3 to 1:6), activation temperatures (700-900 °C), time (1-4 h), heating rate...
Recent advancements in combustion-related alkali chemistry have been increasingly driven by the adoption of CO2-neutral fuels, such as bioderived materials and waste, which often contain high amounts compounds. While compounds may catalytic effects on, e.g., fuel conversion tar cracking, they also contribute to fluidized bed agglomeration, ash deposition, corrosion. A thorough understanding uptake, release, emission control is therefore crucial for scaling up commercializing advanced...
Quartz, feldspar, and olivine are minerals commonly used as bed materials for dual fluidized gasification of biomass. During their interaction with biomass ash, the develop surface layers rich in ash-derived elements. These decrease concentration tar which is an unwanted side product gasification. The interactions quartz, woody ash leading to formation active were studied X-ray diffraction, scanning electron microscopy–energy dispersive spectroscopy, iime-of-flight secondary ion mass...
Abstract One of the most essential features an oxygen carrier is its ability to be oxidized and reduced in order transfer a chemical looping system. A highly can experience multiple performance issues, such as decreased reactivity, agglomeration, defluidization. This crucial for processes that require limited from air reactor fuel reactor. Meanwhile, biomasses environmentally friendly options contain ashes, which would inevitably react with carriers exacerbate issues. To mimic interactions...
The thermal conversion of biomass fuel mixes in fluidized beds can cause agglomeration. To counteract agglomeration, bed material is gradually exchanged with virgin material, and this results increased disposal used material. Furthermore, the exchange represents a costly option, as it involves cost for landfill, unplanned downtime plant. This paper presents novel method evaluation quality: electronic tongue (ET). Evaluation quality contribute toward decreasing unnecessary exchanges proposed...
The choice of bed material for biomass gasification plays a crucial role the overall efficiency process. Olivine is conventionally used due to observed activity olivine toward cracking unwanted tars. Despite its catalytic activity, contains high levels chromium, which complicates deposition material. Feldspar has shown same as when in gasification. As opposed olivine, feldspar does not contain environmentally hazardous compounds, makes it preferred alternative further applications....