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• The densities and pH of partially carbonated aqueous ammonia solutions were measured at 20 °C. • The relation between CO 2 loading of the solution and its pH was derived from chemical equilibrium of the NH 3 -H 2 O-CO 2 system. • Using the fact that the increase in mass is proportional to CO 2 loading, a model derived from the definition of the density. • Presented method for determining CO2 loading using pH and density measurements proved successful on real process samples. The densities and pH of partially carbonated aqueous ammonia solutions were measured at 20 °C. With increasing carbon dioxide loading, increases in density and decreases in pH were observed. These results were used to produce correlations for aqueous ammonia solution loading as a function of ammonia concentration, density, and pH. The correlations are based on first principles to increase predictive capabilities. The predictive capacity of three correlations, having different complexity, was compared. The ensemble of models using both density and pH proved to be superior to correlations based on density or pH separately. [ABSTRACT FROM AUTHOR]

• Experimental pilot data results using an aqueous 2-(2-aminoethylamino)ethanol (AEEA) compared to ethanolamine (MEA) solution. Data provided for various flow configurations, for systems having patented interheated reboiler unskillful running of the pilot CO 2 removal process with AEEA solution can lead to excessive heat consumption, higher than for MEA. • For three different absorbent flow configurations (standard, multi absorber feed, and split flow) with AEEA solution used the lowest reboiler heat duty was obtained for the split flow system. • Running the AEEA CO 2 capture process with the split flow system almost 10 per cent point lower reboiler heat duty than for MEA at the same L/G ratio was achieved. The goal of reducing the energy consumption of the CO 2 removal process from flue gas may be pursued by modifying the process flow system, insertion of new technical solutions or developing new solvents. This paper provides data and discussion of the pilot plant experimental results using an aqueous 2-(2-aminoethylamino)ethanol (AEEA) compared to ethanolamine (MEA) solution. The post-combustion carbon capture pilot plant study was conducted with stripper inter-heating for advanced various flow systems, mainly for multi absorber feed (MAF) process setups, namely one with the lean amine stream being split 50/50 and served at different heights of the absorption column. A comparison with the standard (S) and split flow (SF) process flow modification has been also performed. The test showed that unskillful running of the process with AEEA solution can lead to excessive heat consumption, higher than for MEA. [ABSTRACT FROM AUTHOR]

Institute for Chemical Processing of Coal in cooperation with industrial partners: TAURON Polska Energia S.A. and TAURON Wytwarzanie S.A. designed, constructed and operated pilot plant at Łaziska Power Plant in Łaziska Górne, Poland. The carbon capture facility is based on amine post-combustion process technology and used 30 wt% aqueous ethanolamine solvent. Approximately 1000 kilograms of CO 2 can be captured per day from flue gas stream of 200 m 3 /h of a 225MWe hard coal fired boiler. The plant captured its first tonne of CO 2 in August 2013. The purpose of this study is to present initial results from tests carried out at Łaziska Power Plant using different process flow sheets: heat-integrated stripping column and split flow process. The tests provide valuable experimental evidence for modifications described in the literature, mainly through modelling and demonstrate that flow sheet modifications, despite the increase in plant complexity, are worth to consider. [ABSTRACT FROM AUTHOR]

• A study discussing the possibility to reduce the energy efficiency design index for ships through a post-combustion carbon capture process. • Analysis conducted for different ambient scenarios: standard ISO, arctic and tropical. • The study focuses on demonstration to what extent it is possible to use waste heat as a source of energy for the carbon capture process for ships. • The PCC system has a positive impact on the EEDI reduction and CO 2 and SO 2 emission abatement. This paper discusses the possibility to reduce the energy efficiency design index for ships through a post-combustion carbon capture process. The post-combustion carbon capture process, successfully implemented in the electricity generation sector, allows reduction of CO 2 emissions of existing units using fossil fuels with relative simplicity. An assessment of implementing an amine-based carbon capture system onboard of the ship is presented. The analysis covers the energy requirements of the entire system including SO 2 removal, carbon capture and CO 2 compression. Simulations, conducted for different ambient conditions, revealed that the highest CO 2 emission, translating into a reduction of the EEDI, is possible in tropical conditions. The energy efficiency reduction is possible also in arctic conditions to a lesser extent. The post-combustion carbon capture process seems to be a promising technology as the method to reduce the EEDI for ships. An additional advantage is the possibility to retrofit existing constructions as the implementation requires no significant changes in the ship propulsion system. Finally, the nature of the amine-based carbon capture process, aimed to remove acidic exhaust gas components, supports SO 2 emission reduction, making the exhaust gas practically sulfur-free. [ABSTRACT FROM AUTHOR]