A Process for Capturing CO2 from the Atmosphere
Abstract
Here, we describe a process for capturing CO2 from the atmosphere in an industrial plant. The design captures ~1 Mt-CO2/year in a continuous process using an aqueous KOH sorbent coupled to a calcium caustic recovery loop. We describe the design rationale, summarize performance of the major unit operations, and provide a capital cost breakdown developed with an independent consulting engineering firm. We report results from a pilot plant which provides data on performance of the major unit operations. We summarize the energy and material balance computed using an Aspen process simulation. When CO2 is delivered at 15 MPa the design requires either 8.81 GJ of natural gas, or 5.25 GJ of gas and 366 kWhr of electricity, per ton of CO2 captured. Depending on financial assumptions, energy costs, and the specific choice of inputs and outputs, the levelized cost per ton CO2 captured from the atmosphere ranges from 94 to 232 $/t-CO2.
- Publication Date:
- Research Org.:
- Carbon Engineering Ltd., Squamish, BC (Canada)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE); Innovative Clean Energy (ICE) Fund (Canada); Sustainable Development Technology Canada (SDTC); Industrial Research Assistance Program (IRAP) (Canada)
- OSTI Identifier:
- 1441045
- Alternate Identifier(s):
- OSTI ID: 1438483
- Grant/Contract Number:
- FE0026861
- Resource Type:
- Published Article
- Journal Name:
- Joule
- Additional Journal Information:
- Journal Name: Joule Journal Volume: 2 Journal Issue: 8; Journal ID: ISSN 2542-4351
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 29 ENERGY PLANNING, POLICY, AND ECONOMY; Air capture; direct air capture; process design; cost assessment; pilot plant data
Citation Formats
Keith, David W., Holmes, Geoffrey, St. Angelo, David, and Heidel, Kenton. A Process for Capturing CO2 from the Atmosphere. United States: N. p., 2018.
Web. doi:10.1016/j.joule.2018.05.006.
Keith, David W., Holmes, Geoffrey, St. Angelo, David, & Heidel, Kenton. A Process for Capturing CO2 from the Atmosphere. United States. https://doi.org/10.1016/j.joule.2018.05.006
Keith, David W., Holmes, Geoffrey, St. Angelo, David, and Heidel, Kenton. Wed .
"A Process for Capturing CO2 from the Atmosphere". United States. https://doi.org/10.1016/j.joule.2018.05.006.
@article{osti_1441045,
title = {A Process for Capturing CO2 from the Atmosphere},
author = {Keith, David W. and Holmes, Geoffrey and St. Angelo, David and Heidel, Kenton},
abstractNote = {Here, we describe a process for capturing CO2 from the atmosphere in an industrial plant. The design captures ~1 Mt-CO2/year in a continuous process using an aqueous KOH sorbent coupled to a calcium caustic recovery loop. We describe the design rationale, summarize performance of the major unit operations, and provide a capital cost breakdown developed with an independent consulting engineering firm. We report results from a pilot plant which provides data on performance of the major unit operations. We summarize the energy and material balance computed using an Aspen process simulation. When CO2 is delivered at 15 MPa the design requires either 8.81 GJ of natural gas, or 5.25 GJ of gas and 366 kWhr of electricity, per ton of CO2 captured. Depending on financial assumptions, energy costs, and the specific choice of inputs and outputs, the levelized cost per ton CO2 captured from the atmosphere ranges from 94 to 232 $/t-CO2.},
doi = {10.1016/j.joule.2018.05.006},
journal = {Joule},
number = 8,
volume = 2,
place = {United States},
year = {Wed Aug 01 00:00:00 EDT 2018},
month = {Wed Aug 01 00:00:00 EDT 2018}
}
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https://doi.org/10.1016/j.joule.2018.05.006
https://doi.org/10.1016/j.joule.2018.05.006
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