Bench-Scale Silicone Process for Low-Cost CO{sub 2} Capture

Wood, Benjamin R.; Genovese, Sarah; Perry, Robert J.; Spiry, Irina; Farnum, Rachael; Sing, Surinder; Wilson, Paul; Buckley, P. A.; Acharya, H. K.; Chen, Wei; McDermott, John; Vipperia, Ravikumar; Yee, Michael; Steele, R. T.; Megan, Fresia,; Vogt, Kirk

doi:10.2172/1131945

Cited by 2 publications

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“…Early work on the thermal stability of the aminosilicones indicated that the inherent stability of the GAP-1 material was excellent, with less than 5% loss of activity after 90 days of continuous heating at 150 °C with periodic exposure to air. The same level of chemical integrity was also observed in a 60/40 wt % mixture of GAP-1/TEG …”

Section: Resultssupporting

confidence: 68%

Thermal Degradation of Aminosilicone Carbamates

et al. 2016

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The major thermal degradation pathway seen with 1,5-bis(3-aminopropyl)-1,1,3,3,5,5-hexamethyltrisiloxane/ triethylene glycol (GAP-1/TEG) is the formation of a urea-containing compound. Degradation is increased at higher temperatures, longer reaction times, higher CO 2 concentrations (in the form of carbamate loading), and low water levels. A judicious choice of operating conditions can significantly decrease urea byproduct formation. Reducing the desorption temperature from 140 to 100 °C and adding 5 wt % water to the 60:40 mixture of GAP-1/TEG resulted in a 500-fold reduction in amine loss after 4 days in a CO 2 -rich environment. After 56 days of continuous heating under the same conditions, ∼87% original GAP-1 was retained at 100 °C compared to only ∼20% at 140 °C. The urea byproduct appears to be the only major degradation pathway under these conditions, with 100% of the mass balance accounted for by the urea and amine components.

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Section: Resultssupporting

confidence: 68%

Thermal Degradation of Aminosilicone Carbamates

et al. 2016

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“…Thus, equipment sizing was reduced; for example, lower vapor pressure allows for regeneration steps (separation of solvent from CO2) to be conducted in stirred tanks instead of packed-bed columns, as in MEA solvent processes. Further CAPEX savings can be obtained if the solvent system is changed to carbon steel, since it is believed that an amino silicone solvent is less corrosive than a MEA solvent process [9].…”

Section: High Level Amino Silicone Techno Economics Resultsmentioning

confidence: 99%

Amino silicones solvent advantages to capture CO2 and improve plant sustainability

Alshahrani¹

2023

World J. Adv. Eng. Technol. Sci.

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Results for novel amino silicone physical properties to capture carbon dioxide (CO2) were discussed in this article, that also investigated their potential economic benefits versus traditional amine solvents, such as monoethanolamine (MEA). A range of differing amino silicone solvents were tested for density, viscosity, vapor pressure, and heat value. The novel amino silicone solvents showed better results than conventional solvents for CO2 removal, demonstrating less density, lower vapor pressure, and reduced heat capacity. These advantages were also translated into economic benefits with respect to capital expenditure (CAPEX) and operation expenditure (OPEX).

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Bench-Scale Silicone Process for Low-Cost CO{sub 2} Capture

Cited by 2 publications

References 0 publications

Thermal Degradation of Aminosilicone Carbamates

Thermal Degradation of Aminosilicone Carbamates

Amino silicones solvent advantages to capture CO2 and improve plant sustainability

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