Dynamic simulation and optimization of an industrial-scale absorption tower for <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si11.gif" display="inline" overflow="scroll"><mml:msub><mml:mrow><mml:mstyle mathvariant="normal"><mml:mi>CO</mml:mi></mml:mstyle></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math> capturing from ethane gas

Pouladi, Babak; Hassankiadeh, Mojtaba Nabipoor; Behroozshad, Flor

doi:10.1016/j.egyr.2016.03.003

Cited by 19 publications

(5 citation statements)

References 24 publications

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“…As the graph shows, the gap between the amines narrows as the operating pressures increase, and the CO2 absorption efficiency becomes similar pressures. Pouladi et al [49] found that inlet pressure variation does not affect tower performance. Still, in this case, the varied pressure of the tower/column significantly impacts tower performance, indicating that higher operational pressures encourage this reaction.…”

Section: Further Results and Discussionmentioning

confidence: 99%

“…Therefore, DEA is less sensitive to this temperature range than MEA. In addition, Pouladi et al [49] analyzed how temperature impacts tower performance using DEA and found that above 53 °C, absorption decreases tower performance. DEA has shown here that it is much less sensitive to temperature than MEA solvent, so further increases in temperature would not add any benefit.…”

Section: Further Results and Discussionmentioning

confidence: 99%

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Process Simulation of Post-combustion CO<sub>2 </sub>Capture Using Alkanolamines

Saeid,

Malek,

Zeinolabedini

et al. 2024

Preprint

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Environmental preservation presents numerous challenges, particularly in capturing carbon di-oxide. Despite multiple studies on this topic, there remains a need for additional capture plants, particularly in the energy sector. The power industry emits flue gas during its post-combustion process, and capturing carbon dioxide from this gas would make power plants more environ-mentally friendly while aiding the preservation of the planet. The work conducted in This study aimed to investigate the gap in knowledge to contribute to the development of a better world without harming it. The identified research gap reveals no established optimal monoethanola-mine (MEA) solvent concentration for the process. A simulation was performed using Aspen Hysys to analyze the absorption efficiency at higher solvent concentrations and address this is-sue. The input data was obtained from a flue gas capture plant in the UK. The results obtained from discrete increments indicate an optimal solid result for an MEA concentration of 36 wt.%. Further analysis of temperature and pressure revealed that other solvents, such as diethanola-mine (DEA) and triethanolamine (TEA), are more stable at higher concentrations and that DEA and TEA at the same concentration as MEA consumed significantly less energy to capture carbon dioxide.

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Section: Further Results and Discussionmentioning

confidence: 99%

Section: Further Results and Discussionmentioning

confidence: 99%

Process Simulation of Post-combustion CO<sub>2 </sub>Capture Using Alkanolamines

Saeid,

Malek,

Zeinolabedini

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The capture site for separating CO 2 and H 2 S receives a feed gas available at a high pressure. The gas sweetening unit in the NG processing industry employs a typical absorber-stripper setup to capture CO 2 and H 2 S. 28 The feed gas is introduced into the absorber column at the bottom and comes into contact with a lean solvent. The hybrid solvent MEA+NMP is used in this study to remove acid gases.…”

Section: Process Descriptionmentioning

confidence: 99%

Removal of Carbon Dioxide and Hydrogen Sulfide from Natural Gas Using a Hybrid Solvent of Monoethanolamine and N-Methyl 2-Pyrrolidone

Farooqi,

Ramli,

Lock

et al. 2024

ACS Omega

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The main goal of traditional methods for sweetening natural gas (NG) is to remove hydrogen sulfide (H 2 S) and significantly lower carbon dioxide (CO 2 ). However, when NG processes are integrated into the carbon capture and storage (CCS) framework, there is potential for synergy between these two technologies. A steady-state model utilizing a hybrid solvent consisting of N-methyl-2-pyrrolidone (NMP) and monoethanolamine (MEA) has been developed to successfully anticipate the CO 2 and H 2 S capture process from NG. The model was tested against important variables affecting process performance. This article specifically explores the impact of operational parameters such as lean amine temperature, absorber pressure, and amine flow rate on the concentrations of CO 2 and H 2 S in the sweet gas and reboiler duty. The result shows that hybrid solvents (MEA + NMP) perform better in removing acid gases and reducing reboiler duty than conventional chemical solvent MEA. The primary purpose is to meet product requirements while consuming the least energy possible, which is in line with any process plant's efficiency goals.

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“…The capturing stations for the sweetening of NG receive high-pressure feed gases during the removal of CO 2 and H 2 S. An AGRU is an equipment unit designed to remove and reduce acid gas components, such as CO 2 and H 2 S, from raw NG stream to meet the sales gas specifications. The process applies the concept of absorption, in which a hybrid solvent is employed to remove the acid gases [45].…”

Section: Process Descriptionmentioning

confidence: 99%

Simulation of Natural Gas Treatment for Acid Gas Removal Using the Ternary Blend of MDEA, AEEA, and NMP

et al. 2022

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Natural gas (NG) requires treatment to eliminate sulphur compounds and acid gases, including carbon dioxide (CO2) and hydrogen sulphide (H2S), to ensure that it meets the sale and transportation specifications. Depending on the region the gas is obtained from, the concentrations of acid gases could reach up to 90%. Different technologies are available to capture CO2 and H2S from NG and absorb them with chemical or physical solvents; occasionally, a mixture of physical and chemical solvents is employed to achieve the desired results. Nonetheless, chemical absorption is the most reliable and utilised technology worldwide. Unfortunately, the high energy demand for solvent regeneration in stripping columns presents an obstacle. Consequently, the present study proposes a novel, ternary-hybrid mixture of N-methyl diethanolamine (MDEA), amino ethyl ethanol amine (AEEA), and N-methyl 2-pyrrolidone (NMP) to overcome the issue and reduce the reboiler duty. The study employed high levels of CO2 (45%) and H2S (1%) as the base case, while the simulation was performed with the Aspen HYSYS® V12.1 software to evaluate different parameters that affect the reboiler duty in the acid gas removal unit (AGRU). The simulation was first validated, and the parameters recorded errors below 5%. As the temperature increased from 35 °C to 70 °C, the molar flow of the CO2 and H2S in sweet gas also rose. Nevertheless, the pressure demonstrated an opposite trend, where elevating the pressure from 1000 kPa to 8000 kPa diminished the molar flow of acid gases in the sweet gas. Furthermore, a lower flow rate was required to achieve the desired specification of sweet gas using a ternary-hybrid blend, due to the presence of a higher physical solvent concentration in the hybrid solvent, thus necessitating 64.2% and 76.8%, respectively, less reboiler energy than the MDEA and MDEA + AEEA.

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Dynamic simulation and optimization of an industrial-scale absorption tower for CO2 capturing from ethane gas

Cited by 19 publications

References 24 publications

Process Simulation of Post-combustion CO<sub>2 </sub>Capture Using Alkanolamines

Process Simulation of Post-combustion CO<sub>2 </sub>Capture Using Alkanolamines

Removal of Carbon Dioxide and Hydrogen Sulfide from Natural Gas Using a Hybrid Solvent of Monoethanolamine and N-Methyl 2-Pyrrolidone

Simulation of Natural Gas Treatment for Acid Gas Removal Using the Ternary Blend of MDEA, AEEA, and NMP

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