Search
Results
-
Model-based Process Design of Adsorption Processes for CO2 Capture in the Presence of Moisture
(2014)Energy Procedia ~ 12th International Conference on Greenhouse Gas Control Technologies, GHGT-12Separation processes based on adsorption show potential in the field of carbon dioxide capture and utilization or storage. Model- based process design is a powerful tool to fully exploit this potential. In order to get an accurate description of the behavior of the processes in a fixed bed, a reliable description of the equilibrium adsorption is necessary. In this work the potential of two types of zeolites, 13X and ZSM-5, is investigated ...Conference Paper -
Kinetics of Solid Formation in the Chilled Ammonia System and Implications for a 2nd Generation Process
(2014)Energy Procedia ~ 12th International Conference on Greenhouse Gas Control Technologies, GHGT-12The Chilled Ammonia Process is a mature post-combustion CO2 capture process. The formation of solids in the process at high CO2 and NH3 concentrations was already described in the original patent, but is relatively poorly understood and difficult to explore experimentally. Thermodynamic properties that complicate the experimental investigation, such as the high vapor pressures of CO2 and NH3 and the resulting incongruent solubility as ...Conference Paper -
Dissolution Kinetics of Thermally Activated Serpentine for Mineralization at Flue Gas Conditions
(2014)Energy Procedia ~ 12th International Conference on Greenhouse Gas Control Technologies, GHGT-12This communication gives an overview of our study on the dissolution kinetics of thermally activated serpentine (dehydroxylated serpentine). Firstly, we had studied the far-from-equilibrium dissolution kinetics of 75% dehydroxylated lizardite particles in a liquid and gas flow-through reactor at moderate temperatures (30 °C < T < 120 °C) and low CO2 partial pressures (0.1 bar < pCO2 < 2 bar). Over 80% of the Mg was leached from the ...Conference Paper -
Flue gas CO2 mineralization using thermally activated serpentine: From single- to double-step carbonation
(2014)Energy Procedia ~ 12th International Conference on Greenhouse Gas Control Technologies, GHGT-12This communication explores the carbonation potential of activated serpentine at flue gas conditions. A first series of single-step batch experiments was performed varying the temperature and the slurry density to systematically assess the precipitation regime of the relevant Mg-carbonates and the fate of the Si species in solution. The results suggested that the reaction progress was hindered by a passivating layer of re-precipitated ...Conference Paper