Pilot scale testing of an advanced solvent in a 0.7 MWe post-combustion CO2 capture unit

Frimpong, Reynolds A.; Nikolic, Heather; Bahr, David A.; KIRAN, G.K. TEJ; Liu, Kunlei

doi:10.1016/j.ijggc.2021.103290

Cited by 12 publications

(6 citation statements)

References 28 publications

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“…The regeneration energy consumed during the 100,000 tons/year Piperazine absorber demonstration carried out by the Alabama Carbon Capture Center was as low as 2.6 GJ/t CO 2 [23]. The regeneration energy of the amine solution, which was tested at the 0.7 MWe CO 2 capture facility at Kentucky Utilities, was in the range of 2.9-3.3 GJ/t CO 2 [24]. The 150,000 tons/year demonstrative regeneration of mixed amine absorbent carried out by China's Jinjie Power Plant consumes 2.4 GJ/t CO 2 [25].…”

Section: Introductionmentioning

confidence: 99%

Pilot-Scale Experimental Study of a New High-Loading Absorbent for Capturing CO2 from Flue Gas

Zhao

Chen

2022

Processes

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Chemical absorbents with low-energy requirements have become the primary focus of the research on CO2 capture from flue gas in power plants. To verify the absorption performance of the NICE absorbent developed by the National Institute of Clean-and-Low-Carbon Energy in China, a performance optimization test was conducted in Zhejiang University’s pilot-scale platform, and the effects of the liquid–gas ratio, regeneration pressure, rich liquid fractional flow, and interstage cooling on the absorption performance and regeneration energy consumption were investigated. The results showed that in the CO2 pilot test, the optimized minimum regeneration energy consumption was 2.85 GJ/t CO2, and the corresponding process parameters were as follows: a liquid–gas ratio of 1.82 L/m3, regeneration pressure of 191 kPa, an interstage cooling temperature of 40 °C, and a rich liquid fractional flow ratio of 0.18. This study preliminarily verified the low-energy consumption performance of the NICE absorbent and showed its good potential for industrial applications. Additionally, the NICE absorbent showed promise for capital and operating cost savings because of its low liquid–gas ratio.

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Section: Introductionmentioning

confidence: 99%

Pilot-Scale Experimental Study of a New High-Loading Absorbent for Capturing CO2 from Flue Gas

Zhao

Chen

2022

Processes

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“…In addition, many advanced absorbents have been proposed for low regeneration energy cost but meanwhile they are facing the rise of viscosity 10,11 . As well known, increasing absorbent viscosity leads to lower diffusivity within the liquid phase, 12 larger liquid holdup, 13,14 and thicker liquid film, 15,16 which means greater mass transfer resistance for CO 2 absorption 17 .…”

Section: Introductionmentioning

confidence: 99%

CO₂ absorption intensification using three‐dimensional printed dynamic polarity packing in a bench‐scale integrated CO₂ capture system

et al. 2022

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Postcombustion carbon capture using a chemical absorbent is a promising technology to reduce CO2 emission. However, the overall construction and operating costs remain a major challenge. In order to intensify the absorption process and to reduce these costs, a novel dynamic polarity structured packing (DP packing) with alternate patterns of surface polarity has been developed to enhance local macro‐scale turbulence within the advanced viscous solvent to reduce the mass transfer diffusion resistance. Three DP structured packings that incorporate multiple polymeric materials were fabricated using three‐dimensional printing technique and evaluated through parametric testing using a bench‐scale integrated CO2 capture unit with 76.2 mm ID absorber. At optimized operating conditions, the DP packing showed a relative 22.7% increase in absorption and 20.0% decrease in energy penalty.

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“…Recently, in response to climate change, researchers have reported on many carbon capture and storage (CCS) technologies intended for practical use. − Among them, the chemical absorption process using amine-based solutions as the solvent has been commercialized due to its advantages such as its relatively high economic feasibility and fast reaction rate. − Monoethanolamine (MEA), one of the primary amines, reacts directly with CO 2 to generate protonated amine and carbamate ions, and it is currently considered to be the most optimum solvent for chemical absorption because of its high absorption rate and low solvent price; therefore, several CCS plants employing MEA as the solvent have been commercially operated in the USA, Canada, and China. − However, MEA aqueous systems can still be improved upon; for example, they can be made more economical by improving their utilization limit (lower than 0.5 mol of CO 2 /mol of MEA in a high-concentration solution) and substantial energy consumption for solvent regeneration. Therefore, some MEA–organic solvent (water-free or water-lean) systems using monoethylene glycol, methanol, acetone, and tetrahydrofurfuryl alcohol as the organics are an alternative to enhance the amine utilization increasing the physical absorption capacity of the systems. − …”

Section: Introductionmentioning

confidence: 99%

The Ratio of Chemical and Physical CO₂ Absorption Capacity in Triethanolamine and Methyl-diethanolamine Solution Systems

Han

Wee

2022

Energy Fuels

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The present paper reports the ratio of real chemical (rCACC) and physical (rCACP) CO2 absorption capacity to total absorption capacity (CACT) at absorption time t in 0.01–0.05 mol/L (M) triethanolamine (TEA) and methyl-diethanolamine (MDEA) aqueous solution systems; this is calculated based on the directly measured electrical conductivity (ECm) of the solutions during the absorption time. Although physical absorption becomes dominant in the initial absorption period, it does not reach its saturation state. Thereafter, the chemical absorption dominant period (CADP)which is the time period where the ratio of rCACC to CACT exceeds 50%is present in the MDEA and TEA solutions over 0.02 M. The CADP and its ratio to the overall absorption time were proportional to the amine concentrations of the solutions, and with the same amine concentrations, the MDEA system had a lower CADP ratio than the TEA system; specifically, the CADP ratios of the 0.04 M MDEA and TEA solutions were 23.2 and 36.4%, respectively, which is because the absorption rate of MDEA is relatively faster than that of TEA. Upon completion of chemical absorption, physical CO2 absorption resumed to reach the saturation state, and all the absorption reactions were terminated.

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Pilot scale testing of an advanced solvent in a 0.7 MWe post-combustion CO2 capture unit

Cited by 12 publications

References 28 publications

Pilot-Scale Experimental Study of a New High-Loading Absorbent for Capturing CO2 from Flue Gas

Pilot-Scale Experimental Study of a New High-Loading Absorbent for Capturing CO2 from Flue Gas

CO₂ absorption intensification using three‐dimensional printed dynamic polarity packing in a bench‐scale integrated CO₂ capture system

The Ratio of Chemical and Physical CO₂ Absorption Capacity in Triethanolamine and Methyl-diethanolamine Solution Systems

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Pilot scale testing of an advanced solvent in a 0.7 MWe post-combustion CO2 capture unit

Cited by 12 publications

References 28 publications

Pilot-Scale Experimental Study of a New High-Loading Absorbent for Capturing CO2 from Flue Gas

Pilot-Scale Experimental Study of a New High-Loading Absorbent for Capturing CO2 from Flue Gas

CO2 absorption intensification using three‐dimensional printed dynamic polarity packing in a bench‐scale integrated CO2 capture system

The Ratio of Chemical and Physical CO2 Absorption Capacity in Triethanolamine and Methyl-diethanolamine Solution Systems

Contact Info

Product

Resources

About

CO₂ absorption intensification using three‐dimensional printed dynamic polarity packing in a bench‐scale integrated CO₂ capture system

The Ratio of Chemical and Physical CO₂ Absorption Capacity in Triethanolamine and Methyl-diethanolamine Solution Systems