Evaluation of Reclaimer Sludge Disposal from Post-combustion CO2 Capture

Sexton, Andrew; Dombrowski, Katherine; Nielsen, Paul; Rochelle, Gary T.; Fisher, Kevin; Youngerman, J.; Chen, E.; Singh, Preet M.; Davison, John

doi:10.1016/j.egypro.2014.11.102

Cited by 30 publications

(24 citation statements)

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“…Amines have moderate working capacities for CO 2 and sufficiently low vapor pressure to enable practical designs but are imperfect from an environmental and health perspective , and are susceptible to thermal, , oxidative, and contaminants-based , degradation. Amines react with SO x and NO x to form stable salts in the liquid phase, − some of which may be hazardous. , Reclamation technologies ,, are well developed to recover the contaminated amines, but for CO 2 capture to be cost effective, the contaminants should be removed in an upstream acid gas treatment , or in a sacrificial section of the absorber . The primary issue that has held back the larger-scale deployment of amines, however, and by extension carbon capture technologies more generally, is the high energy demand associated with regenerating the amine and releasing high purity CO 2 in the desorber. ,, Demixing sorbents phase separate into CO 2 -rich and CO 2 -lean phases, and by passing only the CO 2 -rich phase to the desorber, a more efficient process may be possible.…”

Section: Sorbent Materialsmentioning

confidence: 99%

Sorbents for the Capture of CO₂ and Other Acid Gases: A Review

Halliday

Hatton

2021

Ind. Eng. Chem. Res.

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The processes that produce CO 2 and other acid gases (SO x , NO x , and H 2 S) generate value for society. However, these gases are environmental pollutants, and their emission into the atmosphere undermines the value they create. In the face of climate change, CO 2 emissions require attention on an unprecedented scale. Abatement technologies focused on carbon capture, storage, and utilization (CCUS) enable the continued use of processes and resources that produce CO 2 (and other acid gases) while minimizing their effect on the environment. This review explores the role sorbents play in emission abatement and the acid gas "economy". We identify 15 sorbent categories, evaluating their performance at both the material and the system levels. We conclude with anticipated research opportunities and future trends in acid gas separation.

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Section: Sorbent Materialsmentioning

confidence: 99%

Sorbents for the Capture of CO₂ and Other Acid Gases: A Review

Halliday

Hatton

2021

Ind. Eng. Chem. Res.

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“…The adopted design in this study assumes that the reclaimer slipstream is purged on the discharge section of the lean solvent pump and the reclaimed amine returns on the suction section of the lean solvent pump. The mass balance considers a slipstream of 0.1 wt.% of the total circulation rate (Sexton et al, 2014).…”

Section: Reference Casementioning

confidence: 99%

Evaluation of the Performance and Economic Viability of a Novel Low Temperature Carbon Capture Process

et al. 2019

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A novel Advanced Cryogenic Carbon Capture (A3C) process is being developed using low cost but high intensity heat transfer to achieve high CO2 capture efficiencies with a much reduced energy consumption and process equipment size. These characteristics, along with the purity of CO2 product and absence of process chemicals, offer the potential for application across a range of sectors. This work presents a techno-economic evaluation for applications ranging from 3% to 35%vol. CO2 content. The A3C process is evaluated against an amine-based CO2 capture process for three applications; an oil-fired boiler, a combined cycle gas turbine (CCGT) and a biogas upgrading plant. The A3C process has shown a modest life cost advantage over the mature MEA technology for the larger selected applications, and substantially lower costs in the smaller biogas application. Enhanced energy recovery and optimization offer significant opportunities for further reductions in cost.

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“…A PCC plant's operations are not known to be affected by Hg. However, the presence of Hg in the degraded amine waste may make it hazardous (Sexton et al, 2014), necessitating expensive treatment procedures for safe disposal. To avoid this cost, minimization of Hg in the flue gas would be a necessary step.…”

Section: -Feron-9780081005149mentioning

confidence: 99%