CO₂ Capture for Fossil Fuel‐Fired Power Plants

Abstract

Review:In an overview of technologies for fossil fuel-fired power plants with drastically reduced CO 2 emissions the three main technologies postcombustion capture, pre-combustion capture, and oxyfuel technology are presented and compared. Postcombustion capture using reactive absorption is discussed in detail due to its potential for application on a large scale in the near future. Research Article: Methanol with the potential to be synthesized via renewable feedstocks is a good substitution for petroleum fuel if the process economics were scaled down. One way to address this issue is the development of the process to a level with high hydrocarbon yield. Pressure proved to be an important parameter to achieve higher selectivity toward hydrocarbons. Deoxygenation of Methanol over ZSM-5 in a High Hydrodynamics of a Tapered Bubble ColumnA. Bandyopadhyay*, M. N. Biswas The study of their hydrodynamic characteristics gives important information on the operation of these systems. Axial dispersion, holdup, and pressure drop depend on process conditions, greatly affect the performance of the string reactors, and are indispensable in process simulation.

Characterization and Evaluation of Prepared Fe2O3/Al2O3 Oxygen Carriers for Chemical Looping Process

“…The CO 2 capture technologies are typically including precombustion, post-combustion and oxyfuel-combustion. However, the efficiency loss was estimated from 6 to 14% for the above CO 2 capture technologies due to the operation of additional units to obtain high purity CO 2 ; in addition, for economical point of view, the cost for CO 2 capture, transportation and sequestration were estimated as 30 to 60 €/t CO2 (Notz et al, 2011), which is much higher than the price of CO 2 emission rights in European Energy Exchange (EEX) approximately 2.5 to 5.0 €/t CO2 in 2013. Hence, the CO 2 capture technologies should be substantially increased their energy efficiency to meet the economical requirement.…”

Reaction kinetics of CO2 in aqueous methyldiethanolamine solutions using the stopped-flow technique

“…However, the application of amine based technologies for separation of CO 2 from flue gases is faced with a number of technical challenges. The major disadvantage of this method is its high energy requirements associated with the regeneration of the solvent, thereby affecting the reduction of the energy efficiency by about 9-11 absolute percentage points, depending on the solvent used (Figueroa et al, 2008;Notz et al, 2011;Steeneveldt et al, 2006). The solvents that have been proven to be of principal commercial interest are primary amines: monoethanolamine (MEA) and giglycolamine (DGA), the secondary amines: diethanolamine (DEA) and diisopropanolamine (DIPA) and the tertiary amines: methyldiethanolamine (MDEA) and triethanolamine (TEA) (Kohl and Riesenfeld, 1997;Vaidya and Kenig, 2007).…”

Comparison of Large‐Scale Production Methods of Fe2O3/Al2O3 Oxygen Carriers for Chemical‐Looping Combustion

“…Since large amounts of OCs are required in large-scale continuous CLC reactors with increasing sizes, the laboratory-scale preparation methods cannot meet the demand [18]. Several methods have been adopted to prepare OC particles for large-scale continuous CLC systems.…”