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This study investigates the enhancement of amine-based chemical absorption for CO 2 capture in the power industry, focusing on reducing energy consumption through the implementation of a Heat Integrated Stripper (HIS) with built-in heat exchangers. Despite its theoretical promise, there is a lack of experimental validation for the HIS modification. The research aims to assess the effectiveness of the modified stripper compared to the standard process, utilizing pilot plant data from Jaworzno and Łaziska Power Plants in Poland. Collaborating with the TAURON Group, a key player in the Polish energy sector, pilot tests employed a mobile plant with a 200 m3/h nominal gas flow rate. MEA 30% solvent was used in the pilot tests, and the results underwent data reconciliation for mass balances, heat losses, and process heat duty. The study reveals that heat integration positively influences the temperature profile in the stripper, leading to increased CO 2 capture without additional heat input. With the escalating prices of CO 2 emission allowances, this research addresses a crucial aspect of the national economy. The findings provide a foundation for the design of a scaled-up CO 2 capture process incorporating HIS, offering potential solutions to mitigate the environmental impact of power generation. • Complex analysis of gas separation by chemical absorption. • Energy efficiency analysis of advanced CO2 capture process based on pilot studies. • Heat-Integrated Stripper reduces amine scrubber energy use by 7%. • The most reliable operating parameters of the carbon dioxide capture process. [ABSTRACT FROM AUTHOR]

This paper presents a thermodynamic analysis of a carbon dioxide absorption process from flue gases, focusing on the Heat Integrated Stripper (HIS) as a promising modification to the conventional process. The primary objective is to compare the performance of the HIS-modified process with that of the standard process. Experimental research was conducted on a mobile pilot plant using aqueous solutions of MEA 30% for treating 200 m3/h of the flue gas. An advanced data validation and reconciliation method was used to reconcile measurements in the mass balancing of the carbon dioxide absorption process. The results demonstrate that heat integration has a positive impact on the temperature profile of the stripper, leading to an increase in carbon dioxide capture without requiring additional heat consumption. Specifically, the reboiler heat duty in the process was reduced from 3.22 to 3.00 MJ/kg CO2 , indicating the effectiveness of the HIS-modified process in reducing energy consumption. The use of the advanced data validation and reconciliation method also increases the reliability of the obtained results, which can be beneficial for process modeling and design. These findings contribute to the development of more efficient carbon capture technologies. •Thermodynamic analysis of gas separation by chemical absorption. •Energy efficiency analysis of advanced CO 2 capture process based on pilot studies. •Heat-Integrated Stripper reduces amine scrubber energy use by 7%. •Advanced data validation and reconciliation for balance equation fulfillment. •The most reliable operating parameters of the carbon dioxide capture process. [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]

As a part of the strategic research program 'Advanced technologies for energy generation: Development of a technology for highly efficient zero-emission coal-fired power units integrated with CO capture', a mobile CO absorption pilot plant was erected. The main purpose of the pilot plant was to demonstrate the post-combustion technology in conjunction with a coal-fired power plant. The pilot plant captured CO by chemical absorption in amine-based solvents, which was considered to be the best adapted technology to the requirements of coal-fired power plants and suitable for retrofitting to existing units. The pilot plant captured up to 1000 kg/day of CO from the power plant's flue gases with CO recovery exceeding 90 %. The flexible process flowsheet of the pilot plant offered high potential for the validation of various improvements, which were designed to reduce the process energy demand and to increase the CO recovery. This paper summarizes the initial operation experience at the TAURON Łaziska Power Plant in Poland. Selected first results obtained are presented and discussed. The initial campaigns utilized 20 and 30 wt% monoethanolamine (MEA) solutions recognized as baseline solvents that were suitable for comparative purposes. The initial campaigns at the pilot plant successfully demonstrated reliable operation and promising results. [ABSTRACT FROM AUTHOR]

The purpose of this study is to present the testing of a 30 wt% solution of ethanolamine (MEA) in an advanced CO 2 capture pilot plant. The mobile pilot plant, designed, constructed and operated by the Institute for Chemical Processing of Coal (IChPW) in cooperation with industrial partners: TAURON Polska Energia and TAURON Wytwarzanie, was used to carry out trials at the Jaworzno II Power Plant in Poland. Thanks to flexible technological design, numerous process flows sheet modifications were tested. The use of split flow or inter-stage absorber cooling is demonstrated and compared to the standard amine process. Presented modifications resulted in an increase of CO 2 recovery ranging from 3% to 8%, whilst reducing the reboiler heat duty by about 5%. The correlation of CO 2 recovery, reboiler heat duty and process parameters (solvent loading, L/G ratio) has been established for numerous process flow sheet modifications. 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 considering. [ABSTRACT FROM AUTHOR]

• The pilot plant for energy storage in the form of synthetic natural gas is presented. • The pilot-scale initial results of conversion CO 2 to methane using hydrogen from water electrolysis are described. • The impact of of process parameters on the conversion of CO 2 is presented. • Methanation of CO 2 is successfully demonstrated in a microchannel reactor. This article presents preliminary results of the methanation process using CO 2 from amine scrubbing. The studies were carried out at the CO 2 -SNG pilot plant. The installation was built by TAURON Wytwarzanie S.A. at the Łaziska Power Plant in Poland. After the commissioning, the Institute for Chemical Processing of Coal (IChPW) was responsible for conducting research. Synthetic methane (SNG) is produced by the reaction of CO 2 captured from flue gas (using amine absorption) with H 2 obtained from water electrolysis. The methanation reaction takes place in a two-stage catalytic reactor. After the compression the SNG could be used as a fuel for internal combustion engines (CNG). This paper describes in detail the construction of the pilot plant as well as the guidelines for the methanation process. Furthermore, the impact of process gas flow, reactor temperature and system pressure on the conversion of CO 2 to methane is presented. The tests were carried out at process gas flows in the range of 9.9–23.0 m3 N /h, at pressures of 1.5–3.0 bar a and temperatures of 280–350 °C. The maximum obtained CO 2 conversion was 98%. The produced SNG consisted of about 82% of methane, 13% of hydrogen and 5% of CO 2. [ABSTRACT FROM AUTHOR]