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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]

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 densities of aqueous mixtures of aminoethylethanolamine (CAS #000111-41-1) were measured over the entire compositional range at temperatures of 283.15-343.15 K. The results of these measurements were used to calculate excess molar volumes and isobaric thermal expansion coefficients, and partial molar and apparent molar volumes and excess isobaric thermal expansion coefficients were subsequently derived. The excess molar volumes were correlated as a function of the mole fraction using the Redlich-Kister equation. Temperature dependences of the Redlich-Kister coefficients are also presented. The partial molar volumes at infinite dilution of AEEA in water were determined using two different methods. In addition, the solution density was correlated using a Joubian-Acree model. Aqueous solutions of AEEA exhibit similar properties to the aqueous solutions of other alkanolamines (like monoethanolamine) used in acid gas sweetening. [ABSTRACT FROM AUTHOR]

With regard to the climate policy that has been adopted, the implementation of the carbon capture and storage and carbon capture and utilization technologies seems to be the unavoidable solution to reduce emissions from the energy sector. As most Polish energy is derived from coal, the government has taken steps to reduce CO emissions by initiating a 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.' This paper presents the results of an investigation of a process for continuous removal of CO from the gas stream on a laboratory unit. This study was conducted at the Institute for Chemical Processing of Coal in Zabrze, Poland. The purpose of the tests that were conducted was to establish the effect of the sorption column load on CO recovery and on the process regeneration heat duty. In the second part of the paper, a simple comparison of three amine solvents is presented as a part of the solvent selection process for further pilot plant tests. [ABSTRACT FROM AUTHOR]

Fossil fuel depletion, global warming, climate change, and steep hikes in the price of fuel are driving scientists to investigate commercial and environmentally friendly energy carriers like hydrogen. Steam methane reforming (SMR), a current commercial route for H 2 production, has been considered the best remedy to fulfill the requirements. Despite the remarkable quantity of H 2 produced by the SMR, this technology still faces major challenges such as catalyst deactivation due to the sintering of metal nanoparticles, coking, and generation of a large quantity of CO 2. Firstly, the effects of catalyst types, kinetic models, and operating conditions on high-yield H 2 production, the evolution path from gray to blue, via the conventional SMR are comprehensively reviewed. Secondly, exploiting intensified techniques such as membrane technology, sorption, fluidization, and chemical looping for SMR to blue H 2 are discussed in detail. Further, a novel and sustainable path for the SMR process, hybridizing the use of novel materials and emerging technologies to produce turquoise H 2 , is proposed. Finally, the critical points for steam reforming process technology that can help leverage environmental, social, and governance (ESG) profiling have been discussed. [Display omitted] • Evolution path from gray to turquoise H 2 via catalytic SMR is discussed. • Recent advances in catalysis, kinetic models, and operating conditions are reviewed. • The importance of SMR process intensification for blue H 2 production is highlighted. • A novel and sustainable path for the SMR process to efficiently produce turquoise H 2 is proposed. • Key points for SMR technology that can help leverage ESG profiling are listed. [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]

• 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]

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]