A simulation study on the abatement of CO₂emissions by de‐absorption with monoethanolamine

Abstract

Because of the adverse effect of CO2 from fossil fuel combustion on the earth's ecosystems, the most cost-effective method for CO2 capture is an important area of research. The predominant process for CO2 capture currently employed by industry is chemical absorption in amine solutions. A dynamic model for the de-absorption process was developed with monoethanolamine (MEA) solution. Henry's law was used for modelling the vapour phase equilibrium of the CO2, and fugacity ratios calculated by the Peng-Robinson equation of state (EOS) were used for H2O, MEA, N-2 and O-2. Chemical reactions between CO2 and MEA were included in the model along with the enhancement factor for chemical absorption. Liquid and vapour energy balances were developed to calculate the liquid and vapour temperature, respectively.

Technoeconomic and Dynamical Analysis of a CO2 Capture Pilot-Scale Plant Using Ionic Liquids

“…Several works have made use of optimization tools to show improvements in energy consumption as well as in the operating and capital costs for stand-alone equipment, full process flow sheet, , optimal process design under uncertainty, and integration of power plant and carbon capture process (CCP) . Also, researchers have studied the dynamic behavior of this process by analyzing the dynamic performance of stand-alone units (absorber, striping) and the interactions between absorber and the regeneration sections. ,, Other studies have proposed basic and advanced control schemes for CCP. ,,− On the other hand, several studies have also analyzed the economics and performance of the postcombustion process using different solvents, for example, amines, − glycol-based solvents, mixed MEA–triethylene glycol, piperazine, , ionic liquids (ILs), − and mixed amine-based solvent with IL. − …”

X-ray structure of the first `extremo-α-carbonic anhydrase', a dimeric enzyme from the thermophilic bacteriumSulfurihydrogenibium yellowstonenseYO3AOP1

“…Various methods have been proposed in order to capture and concentrate CO 2 from combustion gases for its transit and storage. Among these, the most interesting are (i) the chemical absorption of CO 2 by alkanolamines (Greer et al, 2010) and its subsequent stripping with steam and (ii) the sequestration of CO 2 as an inorganic salt, since carbonate minerals represent the largest reserve of CO 2 on earth (Mignardi et al, 2011). However, these classical processes are expensive and are not convenient in all situations.…”

The first activation study of a bacterial carbonic anhydrase (CA). The thermostable α-CA from Sulfurihydrogenibium yellowstonense YO3AOP1 is highly activated by amino acids and amines

“…2 One of them is based on the chemical absorption of CO 2 by alkanolamines and its subsequent stripping with steam, to produce a gas that can be transported to a geologic or marine sequestration site. 3,4 However, this process is expensive and not convenient in all situations. The sequestration of CO 2 as a salt is also interesting since the carbonate minerals represent the largest reserve of CO 2 on earth.…”