Joule· 2018Q1
A Process for Capturing CO2 from the Atmosphere
- 1,807citations
- Q1SCImago
- 2018year
Short summary
A continuous industrial plant design captures ~1 Mt-CO2/year using an aqueous KOH sorbent and calcium caustic recovery loop, with pilot plant data validating major unit operations.
AI-generated from the title and abstract; the full text is not read.
Key points
- The proposed design captures ~1 Mt-CO2/year continuously using an aqueous KOH sorbent and calcium caustic recovery loop.
- Pilot plant data confirms the performance of the major unit operations.
- Energy requirements are 8.81 GJ natural gas or 5.25 GJ gas + 366 kWhr electricity per ton of CO2 captured (at 15 MPa).
- Levelized costs for CO2 capture range from $94 to $232 per ton, depending on financial assumptions and inputs.
AI-generated from the title and abstract; the full text is not read.
Abstract
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 that 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.
The authors' abstract, as published at the source. Joule, 2018 · DOI ↗
Continue with a free account
Ask the paper: 3 free questions a day about this paper; save it, get its citation, new summaries every day for your field. Takeaways are Premium.
Continue free on the webSign in with Google or Apple; no card needed. You come back to this paper.
On your phone:
Field: Mechanical Engineering
Mechanical EngineeringEngineering