Online Monitoring of Dissolved CO2 and MEA Concentrations: Effect of Solvent Degradation on Predictive Accuracy

Ham, L.V. van der; Eckeveld, A.C. van; Goetheer, Earl

doi:10.1016/j.egypro.2014.11.132

Cited by 10 publications

(5 citation statements)

References 6 publications

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“…Typical techniques employed for measuring CO 2 in the gas phase [1] are the following: Fourier transform infrared (FTIR) carbon dioxide sensors, gas chromatography (GC) and, protontransfer-reaction time-of-flight mass spectrometer (PTR-TOF-MS). Meanwhile, the direct techniques involve the CO 2 experimental measurement in the liquid phase, some of the analytical techniques used for this purpose are: attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy [2,3], conductivity [4,5], high-performance liquid chromatography (HPLC) [6] and titrimetric analysis [7].…”

Section: Introductionmentioning

confidence: 99%

Description of an Experimental Method to Measure the CO2 Loading in Monoethanomine Solutions using BaCO3 Titration Technique

Díaz-Herrera

Zavala‐Guzmán

Mazur-Czerwiec

2022

J. Basic Appl. Sci.

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One of the main criteria for the selection of a suitable solvent is the CO2 solubility capacity or CO2 loading. The objective of this work is to provide students and early-career scientists a detailed description of a titration-based experiment to measure the CO2 loading using simple and inexpensive volumetric and gravimetric lab apparatus. The performance of the method is corroborated by comparing the experimental uncertainty obtained during the determination of the CO2 concentration in test samples (in an absorption unit at lab scale) with reference values obtained by mass balance based on a certified gas analyser. The results indicate that CO2 loading values between the experimental method and the reference range from ±3 to 13%, which is in good agreement with other similar methods.

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Section: Introductionmentioning

confidence: 99%

Description of an Experimental Method to Measure the CO2 Loading in Monoethanomine Solutions using BaCO3 Titration Technique

Díaz-Herrera

Zavala‐Guzmán

Mazur-Czerwiec

2022

J. Basic Appl. Sci.

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“…ere are two important parameters for the solventbased CO 2 removal process: the concentrations of the active solvent component and the dissolved acid gas. For commercial application, the CO 2 absorption solvent does not only contain active solvent, absorbed gas, and water, but also contain heat stable salts and solvent degradation products [8]. e data on the CO 2 loading (mol CO 2 /mol amine) and active ingredient concentration of solvents and water content are essential for the CO 2 solvent absorption operation monitoring and in various experimental conditions studying CO 2 absorption.…”

Section: Introductionmentioning

confidence: 99%

Monitoring of CO₂ Absorption Solvent in Natural Gas Process Using Fourier Transform Near-Infrared Spectrometry

Yusop

Norfadilah

Aishah

et al. 2020

International Journal of Analytical Chemistry

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The analytical methods for the determination of the amine solvent properties do not provide input data for real-time process control and optimization and are labor-intensive, time-consuming, and impractical for studies of dynamic changes in a process. In this study, the potential of nondestructive determination of amine concentration, CO2 loading, and water content in CO2 absorption solvent in the gas processing unit was investigated through Fourier transform near-infrared (FT-NIR) spectroscopy that has the ability to readily carry out multicomponent analysis in association with multivariate analysis methods. The FT-NIR spectra for the solvent were captured and interpreted by using suitable spectra wavenumber regions through multivariate statistical techniques such as partial least square (PLS). The calibration model developed for amine determination had the highest coefficient of determination (R2) of 0.9955 and RMSECV of 0.75%. CO2 calibration model achieved R2 of 0.9902 with RMSECV of 0.25% whereas the water calibration model had R2 of 0.9915 with RMSECV of 1.02%. The statistical evaluation of the validation samples also confirmed that the difference between the actual value and the predicted value from the calibration model was not significantly different and acceptable. Therefore, the amine, CO2, and water models have given a satisfactory result for the concentration determination using the FT-NIR technique. The results of this study indicated that FT-NIR spectroscopy with chemometrics and multivariate technique can be used for the CO2 solvent monitoring to replace the time-consuming and labor-intensive conventional methods.

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“…However, the majority of these schemes were developed under the assumption of the availability of full state measurements, which, in general, is very difficult to satisfy. This fact poses great challenges to real‐time monitoring and control implementation for PCC plants . While data‐driven monitoring methods have been proposed to predict the concentrations of CO 2 and several other key components, these methods can be hardly extended to provide estimates/predictions of the full‐state of PCC plants.…”

Section: Introductionmentioning

confidence: 99%

Distributed monitoring of the absorption column of a post‐combustion CO₂ capture plant

Yin

Decardi‐Nelson

Liu

2019

Adaptive Control & Signal

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Summary In this work, we consider the monitoring of the absorption column of a typical post‐combustion capture plant within a distributed framework. The column is decomposed into a few subsystems, and a distributed moving horizon state estimator network is designed to estimate the state of the entire column. A state predictor is also designed for each subsystem to approximate the future evolution of the subsystem. These subsystem predictors form a distributed predictor network. Based on the distributed estimator and predictor networks, a fault diagnosis mechanism is proposed specifically for potential additive sensor faults. Extensive simulation results are provided to demonstrate the performance of the proposed approach.

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Online Monitoring of Dissolved CO2 and MEA Concentrations: Effect of Solvent Degradation on Predictive Accuracy

Cited by 10 publications

References 6 publications

Description of an Experimental Method to Measure the CO2 Loading in Monoethanomine Solutions using BaCO3 Titration Technique

Description of an Experimental Method to Measure the CO2 Loading in Monoethanomine Solutions using BaCO3 Titration Technique

Monitoring of CO₂ Absorption Solvent in Natural Gas Process Using Fourier Transform Near-Infrared Spectrometry

Distributed monitoring of the absorption column of a post‐combustion CO₂ capture plant

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Online Monitoring of Dissolved CO2 and MEA Concentrations: Effect of Solvent Degradation on Predictive Accuracy

Cited by 10 publications

References 6 publications

Description of an Experimental Method to Measure the CO2 Loading in Monoethanomine Solutions using BaCO3 Titration Technique

Description of an Experimental Method to Measure the CO2 Loading in Monoethanomine Solutions using BaCO3 Titration Technique

Monitoring of CO2 Absorption Solvent in Natural Gas Process Using Fourier Transform Near-Infrared Spectrometry

Distributed monitoring of the absorption column of a post‐combustion CO2 capture plant

Contact Info

Product

Resources

About

Monitoring of CO₂ Absorption Solvent in Natural Gas Process Using Fourier Transform Near-Infrared Spectrometry

Distributed monitoring of the absorption column of a post‐combustion CO₂ capture plant