Ionic Liquid (1-Butyl-3-Metylimidazolium Methane Sulphonate) Corrosion and Energy Analysis for High Pressure CO2 Absorption Process

Taimoor, Aqeel Ahmad; Al-Shahrani, Saad; Ali, Muhammad Intizar

doi:10.3390/pr6050045

Cited by 8 publications

(7 citation statements)

References 41 publications

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“…According to the Intergovernmental Panel on Climate Change (IPCC) [1], the main origin is the anthropogenic emissions of so-called greenhouse gases (GHG), due to the use of fossil fuels such as coal, oil and natural gas for the production of electricity, transportation or industrial uses, CO 2 being the most relevant among the greenhouse gases. For this reason, the use of renewables energies which reduce CO 2 emissions could be found as one of the fields most investigated in the last decade [3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Regeneration of Sodium Hydroxide from a Biogas Upgrading Unit through the Synthesis of Precipitated Calcium Carbonate: An Experimental Influence Study of Reaction Parameters

Baena‐Moreno¹,

Rodríguez‐Galán²,

Vega³

et al. 2018

Processes

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This article presents a regeneration method of a sodium hydroxide (NaOH) solution from a biogas upgrading unit through calcium carbonate (CaCO3) precipitation as a valuable by-product, as an alternative to the elevated energy consumption employed via the physical regeneration process. The purpose of this work was to study the main parameters that may affect NaOH regeneration using an aqueous sodium carbonate (Na2CO3) solution and calcium hydroxide (Ca(OH)2) as reactive agent for regeneration and carbonate slurry production, in order to outperform the regeneration efficiencies reported in earlier works. Moreover, Raman spectroscopy and Scanning Electron Microscopy (SEM) were employed to characterize the solid obtained. The studied parameters were reaction time, reaction temperature, and molar ratio between Ca(OH)2 and Na2CO3. In addition, the influence of small quantities of NaOH at the beginning of the precipitation process was studied. The results indicate that regeneration efficiencies between 53%–97% can be obtained varying the main parameters mentioned above, and also both Raman spectroscopy and SEM images reveal the formation of a carbonate phase in the obtained solid. These results confirmed the technical feasibility of this biogas upgrading process through CaCO3 production.

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Section: Introductionmentioning

confidence: 99%

Regeneration of Sodium Hydroxide from a Biogas Upgrading Unit through the Synthesis of Precipitated Calcium Carbonate: An Experimental Influence Study of Reaction Parameters

Baena‐Moreno¹,

Rodríguez‐Galán²,

Vega³

et al. 2018

Processes

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“…It was found that for high-pressure applications, the usage of amine mixtures has a minimal impact on the CO 2 removal, while for low-pressure systems, it leads to a major enhancement. A similar attempt at CO 2 removal at high pressures has been reported using ionic liquids . Another study evaluated the blending of MDEA with DEA and MEA in different ratios to find out the optimum concentration of each amine blend.…”

Section: Introductionmentioning

confidence: 90%

“…A similar attempt at CO 2 removal at high pressures has been reported using ionic liquids. 16 Another study evaluated the blending of MDEA with DEA and MEA in different ratios to find out the optimum concentration of each amine blend. The study calculated the energy requirement for each blend with the lowest achievable sweet gas acid content.…”

Section: Introductionmentioning

confidence: 99%

Design Modification of Acid Gas Cleaning Units for an Enhanced Performance in Natural Gas Processing

Al-Amri

Zahid

2020

Energy Fuels

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Acid gas cleaning is one of the natural gas processing steps where the acid gases are removed to satisfy the quality of the sweet gas. Conventionally, this is achieved by processing the sour gas through an acid gas removal (AGR) unit to produce the desired sweet gas while concentrating the H2S gas in the acid gas enrichment unit. Together with achieving the required high heating value of 930 BTU/SCF in the sweet gas, it is also desired from the process that the acid gases must contain 30–55% H2S content before feeding to the sulfur recovery unit. In addition, the waste gases sent to the thermal oxidizer must not contain more than 2000 ppmv H2S. However, these requirements put a constraint on the process operational flexibility especially when the feed gas has a high CO2 content. In this study, a novel acid gas cleaning design has been proposed that can significantly reduce the energy requirement while maintaining all the streams’ design specifications. The proposed design recommends first producing acid gas with the required purity and then producing the sweet gas in another AGR unit. The results show that the proposed design requires 22% lower operational energy compared to the base design. The economic analysis reflects a saving of more than $7.25 million in total annual cost compared to the conventional design.

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“…These advantages were also demonstrated by Yang et al [43]; mixing 30 wt% of MEA, 40 wt% of [bmim][BF4], and 30 wt% of H 2 O, it was possible to reduce the energy consumption by 37.2% compared to an aqueous solution of MEA. An optimal ratio between the IL and the traditional solvent exists, as found by Taimoor et al [44] when considering [bmim][MS] and MEA in their carbon dioxide capture process, developed in Aspen Hysys ® .…”

Section: Introductionmentioning

confidence: 99%

Surface-Response Analysis for the Optimization of a Carbon Dioxide Absorption Process Using [hmim][Tf2N]

Leonzio

Zondervan

2020

Processes

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The [hmim][Tf2N] ionic liquid is considered in this work to develop a model in Aspen Plus® capturing carbon dioxide from shifted flue gas through physical absorption. Ionic liquids are innovative and promising green solvents for the capture of carbon dioxide. As an important aspect of this research, optimization is carried out for the carbon capture system through a central composite design: simulation and statistical analysis are combined together. This leads to important results such as the identification of significant factors and their combinations. Surface plots and mathematical models are developed for capital costs, operating costs and removal of carbon dioxide. These models can be used to find optimal operating conditions maximizing the amount of captured carbon dioxide and minimizing total costs: the percentage of carbon dioxide removal is 93.7%, operating costs are 0.66 million €/tonCO2 captured (due to the high costs of ionic liquid), and capital costs are 52.2 €/tonCO2 captured.

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Ionic Liquid (1-Butyl-3-Metylimidazolium Methane Sulphonate) Corrosion and Energy Analysis for High Pressure CO2 Absorption Process

Cited by 8 publications

References 41 publications

Regeneration of Sodium Hydroxide from a Biogas Upgrading Unit through the Synthesis of Precipitated Calcium Carbonate: An Experimental Influence Study of Reaction Parameters

Regeneration of Sodium Hydroxide from a Biogas Upgrading Unit through the Synthesis of Precipitated Calcium Carbonate: An Experimental Influence Study of Reaction Parameters

Design Modification of Acid Gas Cleaning Units for an Enhanced Performance in Natural Gas Processing

Surface-Response Analysis for the Optimization of a Carbon Dioxide Absorption Process Using [hmim][Tf2N]

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