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Title: Physical solvents and techno-economic analysis for pre-combustion CO2 capture: A review

Journal Article · · International Journal of Greenhouse Gas Control
ORCiD logo [1]; ORCiD logo [2];  [3];  [4]
  1. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States); Carbon Capture Scientific, South Park, PA (United States)
  2. Univ. of Pittsburgh, PA (United States); Kuwait Univ., Kuwait City (Kuwait)
  3. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States); Univ. of Pittsburgh, PA (United States)
  4. National Energy Technology Lab. (NETL), Pittsburgh, PA (United States)

In this manuscript we review the use, development, and economic performance of physical solvents for pre-combustion CO2 capture from high pressure H2 rich syngas streams. Commercially available physical solvents are presented, followed by an assessment of the ideal properties that are important for development of novel solvents for CO2 capture from high-pressure syngas streams. To compare the technical and economic performance of traditional and novel physical solvents, a review of the methods, assumptions and models used in techno-economic analysis (TEA) studies was conducted. It was found that, although some novel solvents show promising technical performance in the laboratory (e.g., high CO2 absorption capacity and low vapor pressure), other issues (e.g., solvent viscosity and cost) may limit their industrial applications. Process simulations were useful tools for modeling the technical performance of processes using traditional and novel solvents. However, model predictions are most reliable when the methods and correlations used to develop the process simulation are validated with representative experimental data, in particular highly accurate baseline models are required for fair comparison among physical solvents. The key inputs and assumptions in pre-combustion CO2 capture TEAs have also been summarized. Some studies showed that the promising technical performance of novel physical solvents can be offset by the high and often unknown costs of these solvents. Future development of novel physical solvents for pre-combustion CO2 capture will benefit from more studies that conduct in-depth techno-economic analysis, specifically with validated process simulations and transparent economic models.

Research Organization:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
OSTI ID:
1871949
Report Number(s):
DOE/NETL-2021/2792
Journal Information:
International Journal of Greenhouse Gas Control, Journal Name: International Journal of Greenhouse Gas Control Journal Issue: July 2022 Vol. 118; ISSN 1750-5836
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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