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The goal of reducing energy consumption of the CO2 removal process from flue gas may be pursued by developing new solvents as well as by modifying the technological process itself. This paper provides a discussion of the experimental results obtained from a process development unit (PDU) using an aqueous 2-amino-2-methyl-1-propanol (AMP) solution activated with piperazine (PZ) for post-combustion carbon capture located at the Clean Coal Technologies Centre in Poland. The results are compared for two distinct process setups, namely one with the lean amine stream being split - a solution referred to as split flow, and a system with standard configuration. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

The article addresses the problem of carbon dioxide utilization through conversion with hydrogen to gaseous fuels. It describes methods which can be used to obtain Substitute Natural Gas (SNG) with as well as reactors where methanation process can be guided. There has been highlighted different economic and technical issues linked with carbon dioxide utilisation for production of methane. The last part of the article introduces global and local projects involved in developing this technology. [ABSTRACT FROM AUTHOR]

The densities of unloaded and partially carbonated piperazine (PZ) and 2-amino-2-methyl-1-propanol (AMP) aqueous solutions and their blends were measured at temperatures of 293.15 to 333.15 K. The results of these measurements were used to calculate excess molar volumes assuming that the volume of carbon dioxide dissolved in the solutions was zero. The excess molar volumes were correlated as a function of the CO2mole fraction using the Redlich–Kister equation. The results of the actual density are discussed in comparison with the case if no volume expansion occurs during the loading of the solutions. The no-volume-expansion model can be used to give an initial estimate of the density, while the Redlich–Kister equation is suitable for a precise density estimation. It must be noted that the no-volume-expansion model does not require any parameters except the density of the unloaded solution, unlike the Redlich–Kister equation, whose coefficients are regressed from experimental data. [ABSTRACT FROM AUTHOR]

In this study, the densities of carbonated aqueous solution of amines (ethanolamine, methylethanolamine, aminoethylethanolamine, and N‐methyldiethanolamine with piperazine) in various concentration and CO2 loadings were measured with temperatures ranging from 20°C to 60°C. The measured densities are in good agreement with those reported in the literature. The density experimental data were correlated with temperature and CO2 loading. Additionally, in case of the monoethanolamine, amine concentration was included into the correlation. Furthermore, an obtained correlation for density prediction of carbonated monoethanoloamine solutions was compared with Jouyban–Acree model. The fitted models are able to predict the density of carbonated amine solutions with a satisfactory precision. Presented correlations can be used either to predict the density of carbonated amine solutions or to determine CO2 loading of the investigated solution, if the density is known. The results of this paper may have an industrial application as a tool for process control of CO2 capture systems. [ABSTRACT FROM AUTHOR]