A5061706177- Chemical Looping and Thermochemical Processes
- Carbon Dioxide Capture Technologies
- Industrial Gas Emission Control
- Adsorption and Cooling Systems
- Granular flow and fluidized beds
- Catalysts for Methane Reforming
- CO2 Sequestration and Geologic Interactions
- Iron and Steelmaking Processes
- Oil, Gas, and Environmental Issues
- Mineral Processing and Grinding
- Thermochemical Biomass Conversion Processes
- Catalytic Processes in Materials Science
- Thermal and Kinetic Analysis
- Phase Change Materials Research
- Phase Equilibria and Thermodynamics
- Thermodynamic and Exergetic Analyses of Power and Cooling Systems
- Metallurgical Processes and Thermodynamics
- Coal Properties and Utilization
- Diabetes, Cardiovascular Risks, and Lipoproteins
- Concrete and Cement Materials Research
- Thermal Expansion and Ionic Conductivity
- Advancements in Solid Oxide Fuel Cells
- Coal and Its By-products
- Diabetes Treatment and Management
- Coal Combustion and Slurry Processing
Instituto Nacional del Carbón
2016-2025
Instituto de Carboquímica
2002-2024
Consejo Superior de Investigaciones Científicas
2008-2024
Interdisciplinary Center for Aquaculture Research
2017-2023
Universidad de Oviedo
2017-2020
European Research Council
2018
Primary Health Care
2016
Primary HealthCare
2016
Alberta Innovates
2015
Commonwealth Scientific and Industrial Research Organisation
2015
In recent years, Carbon Capture and Storage (Sequestration) (CCS) has been proposed as a potential method to allow the continued use of fossil-fuelled power stations whilst preventing emissions CO2 from reaching atmosphere. Gas, coal (and biomass)-fired can respond changes in demand more readily than many other sources electricity production, hence importance retaining them an option energy mix. Here, we review leading capture technologies, available short long term, their technological...
Calcium oxide can be an effective sorbent to separate CO2 at high temperatures. When coupled with a calcination step produce pure CO2, the carbonation reaction is basis for several high-temperature capture systems. The evolution cycling of capacity CaO derived from natural limestones experimentally investigated in this work. Long series carbonation/calcination cycles (up 500) varying different variables affecting have been tested thermogravimetric apparatus. Calcination temperatures above T...
The use of calcines natural limestones as CO2 regenerable sorbents is investigated in this work by studying the decay maximum carbonation conversion during many carbonation/calcination cycles. New experimental information complemented with a compilation previously published data on subject. observed limits reaction lime are interpreted terms certain loss porosity associated small pores and increase large pores. In part every cycle, CaCO3 fills up all available made plus fraction voids,...
Capturing CO2 from large-scale power generation combustion systems such as fluidized bed combustors (FBCs) may become important in a CO2-constrained world. Using previous experience capturing pollutants SO2 these systems, we discuss range of options that incorporate capture with CaO FBC systems. Natural limestones emerge this study suitable high-temperature sorbents for because their low price and availability. This is despite limited performance regenerable sorbents. We have found process...
Calcium oxide can be an effective CO2 sorbent at high temperatures. When coupled with a calcination step to produce pure CO2, the carbonation reaction is basis for several high-temperature separation systems of CO2. The formation product layer CaCO3 known mark sudden change in regime, from very fast uptake slow rates. critical thickness this has been measured work on real materials, using different limestone precursors and submitting them many repeated cycles (up 100). Mercury porosimetry...
Abstract Experiments in a pilot‐scale fluidized‐bed reactor have been carried out to investigate the carbonation reaction of CaO, as potential method for CO 2 capture from combustion flue gases at high‐temperatures. Results show that efficiencies are very high, while there is sufficient fraction CaO bed reacting fast regime. The total capacity decays with number carbonation‐calcination cycles. experimental concentration profiles measured inside during period interpreted KL fluid model, by...
Proposed utilization schemes producing liquid fuels from captured CO<sub>2</sub> offer fewer climate mitigation benefits at higher costs than alternative systems.
Power plants are prime candidates to apply CO2 capture for final storage as a mitigation option climate change. Many concepts make use of sorption−desorption cycle separate from flue gas or O2 air. These include commercial absorption processes, well processes using new sorbent formulations, adsorption, and high-temperature chemical looping cycles O2. All these must confront the large scale carbon flows typical in power plant. In this work, common mass balance all is used define parameter...
Abstract Calcium oxide has been proved to be a suitable sorbent for high temperature CO 2 capture processes based on the cyclic carbonation‐calcination reaction. It is important have reaction rate models that are able describe behavior of CaO particles with respect carbonation Fresh calcined lime known reactive solid toward carbonation, but average particle in CaO‐based system experiences many cycles and reactivity changes number cycles. This study applies random pore model (RPM) estimate...
This paper presents the basic economics of an emerging concept for CO2 capture from flue gases in power plants. The complete system includes three key cost components: a full combustion plant, second plant working as oxy-fired fluidized bed calciner, and carbonator interconnected with calciner capturing plant. simplicity economic analysis is possible because data two major first components are well established open literature. It shown that there clear scope breakthrough to around 15 $/t...
The use of carbonation/calcination cycles CaO/CaCO3 is emerging as a viable technique for the capture CO2 generated in combustion coals power generation. Specifically, choice natural limestones carriers an attractive option because they are cheap and abundant materials, although previous studies indicate that reactivity calcines toward rapidly drops with cycling. This paper reports on effects internal morphology CaO particles their capability absorbing CO2. Calcines limestone different...
Flue gas CO2 capture using a Ca-based chemical looping system has been shown to be potentially more cost-effective than traditional amine-based systems in bench-scale testing. The results of these initial tests are projected, an Excel-based economic model, estimate the 30-year levelized cost per metric ton (t) for utility-scale power plant. An order magnitude capital and operating 360 MW pressurized fluidized bed combustor (PFBC) is presented, assuming western Canadian location. Additional...
Postcombustion CO2 capture using CaO as a regenerable solid sorbent in circulating fluidized bed (CFB) carbonator is emerging promising technology. Experimental validation of this concept provided through comparative analysis the results obtained two laboratory-scale dual (DFB) installations located at INCAR-CSIC (Spain) and IFK (Germany). The focused on performance CFB reactors operated with continuous circulation CaO. A reasonable closure carbon balances (i) between that has disappeared...
The calcium oxide hydration/dehydration reaction is proposed as a suitable couple for thermochemical energy storage systems. However, limited work has been reported on the kinetics of CaO/Ca(OH)2 under appropriate operation conditions applications involving fluidized beds. This study focuses effect temperature, partial steam pressure, and particle size upon intrinsic hydration dehydration when natural materials are used. experimental data have fitted satisfactorily to shrinking core model...
Abstract Calcium looping processes for capturing CO 2 from large emissions sources are based on the use of CaO particles as sorbent in circulating fluidized‐bed (CFB) reactors. A continuous flow an oxyfired calciner is fed into carbonator and a certain inventory active expected to capture flue gas. The circulation rate determine efficiency. Other parameters such average carrying capacity particles, temperature, gas velocity must be taken account. To investigate effect these variables...
This paper presents a new solids looping process for capturing CO2 while generating hydrogen and/or electricity from natural gas. The is based on the sorption enhanced reforming of CH4, employing CaO as high temperature sorbent, combined with second chemical loop CuO/Cu. exothermic reduction CuO CH4 used to obtain heat necessary decomposition CaCO3 formed in step. main part completed by oxidation Cu CuO, which carried out air diluted product gas recycle this reactor at sufficiently low...
Post-combustion CO2 capture based on the Ca-looping process (CaL) is a promising technology under development reversible reaction between CaO and to form CaCO3 regeneration of by calcination in rich atmosphere. This work focused study kinetics with typical solid conditions expected these systems. Calcination rates carbonated materials derived from two limestones have been measured at different numbers carbonation–calcination cycles, as function temperature partial pressure. It has observed...