Beyond 90% capture: Possible, but at what cost?

Brandl, Patrick; Bui, Mai; Hallett, Jason P.; Dowell, Niall Mac

doi:10.1016/j.ijggc.2020.103239

Cited by 104 publications

(52 citation statements)

References 70 publications

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“…The net-zero paradigm entails balancing any residual CO 2 emissions with an equivalent amount of permanent CO 2 removal from the atmosphere. Because of large uncertainties in the cost of technologies such as direct air capture (DAC) (Dods et al, 2021), a recent focus in CCS development has been to achieve CO 2 capture rates well above 90% (Feron et al, 2019;Gao et al, 2019;Hirata et al, 2020;Brandl et al, 2021;Danaci et al, 2021). But regardless of the ability to achieve high capture rates, upwards of 30% of a refinery's emissions may remain unaddressed by post-combustion CCS alone.…”

Section: Why Use a Multipronged Approach?mentioning

confidence: 99%

A Pathway Towards Net-Zero Emissions in Oil Refineries

et al. 2022

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Rapid industrialization and urbanization have increased the demand for both energy and mobility services across the globe, with accompanying increases in greenhouse gas emissions. This short paper analyzes strategic measures for the abatement of CO2 emissions from oil refinery operations. A case study involving a large conversion refinery shows that the use of post-combustion carbon capture and storage (CCS) may only be practical for large combined emission point sources, leaving about 30% of site-wide emissions unaddressed. A combination of post-combustion CCS with a CO2 capture rate well above 90% and other mitigation measures such as fuel substitution and emission offsets is needed to transition towards carbon-neutral refinery operations. All of these technologies must be configured to minimize environmental burden shifting and scope 2 emissions, whilst doing so cost-effectively to improve energy access and affordability. In the long run, scope 3 emissions from the combustion of refinery products and flaring must also be addressed. The use of synthetic fuels and alternative feedstocks such as liquefied plastic waste, instead of crude oil, could present a growth opportunity in a circular carbon economy.

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Section: Why Use a Multipronged Approach?mentioning

confidence: 99%

A Pathway Towards Net-Zero Emissions in Oil Refineries

et al. 2022

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“…49 , 50 The recovery constraint of 90%, however, is rather an arbitrary choice of policy to encourage technologies that have higher success in large-scale mitigation of carbon dioxide. 48 , 51 In fact, there are compelling reasons that reducing the recovery target can be beneficial for practical reasons especially for gas streams with higher concentrations of CO 2 (e.g., carbon capture from cement plants). 48 , 52 − 54 In this review, we mainly focus on the DOE’s 95% purity and 90% recovery targets, considering they have been overwhelmingly used by the majority of materials screening studies conducted so far.…”

Section: Postcombustion Carbon Capturementioning

confidence: 99%

Performance-Based Screening of Porous Materials for Carbon Capture

et al. 2021

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Computational screening methods have changed the way new materials and processes are discovered and designed. For adsorption-based gas separations and carbon capture, recent efforts have been directed toward the development of multiscale and performance-based screening workflows where we can go from the atomistic structure of an adsorbent to its equilibrium and transport properties at different scales, and eventually to its separation performance at the process level. The objective of this work is to review the current status of this new approach, discuss its potential and impact on the field of materials screening, and highlight the challenges that limit its application. We compile and introduce all the elements required for the development, implementation, and operation of multiscale workflows, hence providing a useful practical guide and a comprehensive source of reference to the scientific communities who work in this area. Our review includes information about available materials databases, state-of-the-art molecular simulation and process modeling tools, and a complete catalogue of data and parameters that are required at each stage of the multiscale screening. We thoroughly discuss the challenges associated with data availability, consistency of the models, and reproducibility of the data and, finally, propose new directions for the future of the field.

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“…Economic analysis shows that US $70-100 are needed to capture one tonne CO 2 from flue gas (the average CO 2 concentration is about 3-14%) on average. On the other hand, it costs between US $300 to $1,500 to capture CO 2 directly from air (Brandl et al, 2021). It would be possible to commercialize the capture efficiency beyond 90%.…”

Section: Co 2 Capture Technologies For Coal Power Plantsmentioning

confidence: 99%