Density of unloaded and CO<sub>2</sub>-loaded aqueous solutions of piperazine and 2-amino-2-methyl-1-propanol and their mixtures from 293.15 to 333.15 K

Stec, Marcin; Spietz, Tomasz; Więcław‐Solny, L.; Tatarczuk, A.; Wilk, Andrzej; Sobolewski, A.

doi:10.1080/00319104.2015.1115328

Cited by 11 publications

(12 citation statements)

References 28 publications

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“…The chemical composition of the gas at the system inlet and outlet was monitored on‐line by Siemens ULTRAMAT 23 gas analyzers. Loading of the solvent was determined by application of a densitometric method using the Kyoto KEM DA‐640 densitometer as well as by potentiometric titration . The amine content in the solvent was measured by means of the Dionex ion chromatograph and by titration method .…”

Section: Methodsmentioning

confidence: 99%

Experimental results of split flow process using AMP/PZ solution for post‐combustion CO₂ capture

et al. 2017

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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.

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Section: Methodsmentioning

confidence: 99%

Experimental results of split flow process using AMP/PZ solution for post‐combustion CO₂ capture

et al. 2017

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“…In a real solution, CO2 reacts with MEA to form carbamate and bicarbonate ions and the solution becomes an electrolyte. Here it is assumed as unreacted and molar volumes were calculated using Equation (14) [32]. This approach was taken to represent dissolved CO2 in aqueous MEA [7,10,26] and used in the viscosity correlation by Hartono, Mba and Svendsen [10].…”

Section: Viscosity Of Mea (1) + H2o (2) + Co2 (3) Mixturesmentioning

confidence: 99%

Density, Viscosity and Free Energy of Activation for Viscous Flow of Monoethanol Amine (1) + H2O (2) + CO2 (3) Mixtures

Karunarathne

Eimer

Øi

2020

Fluids

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Densities and viscosities of aqueous monoethanol amine (MEA) and CO2-loaded aqueous MEA are highly relevant in engineering calculations to perform process design and simulations. Density and viscosity of the aqueous MEA were measured in the temperature range of 293.15 K to 363.15 K with MEA mass fractions ranging from 0.3 to 1.0. Densities of the aqueous MEA were fitted for a density correlation. Eyring’s viscosity model based on absolute rate theory was adopted to determine the excess free energy of activation for viscous flow of aqueous MEA mixtures and was correlated by a Redlich–Kister polynomial. Densities and viscosities of CO2-loaded MEA solutions were measured in the temperature range of 293.15 K to 353.15 K with MEA mass fractions of 0.3, 0.4 and 0.5. The density correlation used to correlate aqueous MEA was modified to fit CO2-loaded density data. The free energy of activation for viscous flow for CO2-loaded aqueous MEA solutions was determined by Eyring’s viscosity model and a correlation was proposed to represent free energy of activation for viscous flow and viscosity. This can be used to evaluate quantitative and qualitative properties in the MEA + H2O + CO2 mixture.

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“…The mechanism by which carbon reacts with CO 2 is not yet fully understood. The reaction is widely accepted to proceed by the sorption of the reactant, the reaction on solid surface, and the desorption of the product.…”

Section: Kinetic Modelsmentioning

confidence: 99%

“…Under the CCS approach, the CO 2 would be captured from power plants and, afterward, injected into geological formations to lock up the gas for decades [1]. Up to date, there are three technological pathways considered as the more efficient for CO 2 capture from coal-derived power generation: post-combustion capture with amine-based systems [2], solid sorbents based on calcium oxide [3,4], membranes and ionic liquids; precombustion technologies with integrated gasification combined cycle (IGCC) and sorbents for chemical looping [5][6][7]; and finally, the oxy-fuel combustion technology [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Experimental study on kinetics of coal char–CO2 reaction by means of pressurized thermogravimetric analysis

Tomaszewicz

Ściążko

2017

J Therm Anal Calorim

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Comprehensive kinetic studies were performed to establish the validity of many kinetic expressions that describe the behavior of char samples during pressurized gasification toward CO 2 . The gasification experiments were carried out isothermally in a high-pressure thermogravimetric analyzer (TG-HPs, TA Instruments, USA). Two char samples derived from Turów lignite B and Janina sub-bituminous C were used for the studies. The models that were employed are regarded as the most popular: the volumetric (VM); the modified volumetric (MVM); the grain (GM); the random pore (RPM); and the Langmuir-Hinshelwood model. The models were validated at 850, 950, and 1050°C, and at CO 2 pressures of 0.4, 1, 11, and 21 bar. The effects of temperature and pressure were significant and increased the reaction rate. The calculated values of activation energy were similar for the various models employed and ranged from 169 to 212 kJ mol -1 for the Turów sample and 182 to 238 kJ mol -1 for the Janina coal char sample. The GM, RPM, and MVM fit the experimental data well, in contrast to the VM and LH models.

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Density of unloaded and CO₂-loaded aqueous solutions of piperazine and 2-amino-2-methyl-1-propanol and their mixtures from 293.15 to 333.15 K

Cited by 11 publications

References 28 publications

Experimental results of split flow process using AMP/PZ solution for post‐combustion CO₂ capture

Experimental results of split flow process using AMP/PZ solution for post‐combustion CO₂ capture

Density, Viscosity and Free Energy of Activation for Viscous Flow of Monoethanol Amine (1) + H2O (2) + CO2 (3) Mixtures

Experimental study on kinetics of coal char–CO2 reaction by means of pressurized thermogravimetric analysis

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Density of unloaded and CO2-loaded aqueous solutions of piperazine and 2-amino-2-methyl-1-propanol and their mixtures from 293.15 to 333.15 K

Cited by 11 publications

References 28 publications

Experimental results of split flow process using AMP/PZ solution for post‐combustion CO2 capture

Experimental results of split flow process using AMP/PZ solution for post‐combustion CO2 capture

Density, Viscosity and Free Energy of Activation for Viscous Flow of Monoethanol Amine (1) + H2O (2) + CO2 (3) Mixtures

Experimental study on kinetics of coal char–CO2 reaction by means of pressurized thermogravimetric analysis

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Density of unloaded and CO₂-loaded aqueous solutions of piperazine and 2-amino-2-methyl-1-propanol and their mixtures from 293.15 to 333.15 K

Experimental results of split flow process using AMP/PZ solution for post‐combustion CO₂ capture

Experimental results of split flow process using AMP/PZ solution for post‐combustion CO₂ capture