Low pressure carbon dioxide removal from the anode exhaust of a fuel cell
US10797332B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2018 |
| Grant date | Oct 6, 2020 |
| Priority date | — |
| Expiry date | Feb 18, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/151
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fuel cell system for removing CO2 from anode exhaust gas includes a fuel cell having an anode that outputs anode exhaust including H2, CO, CO2, and water; a shift reactor that receives a first portion of the anode exhaust and performs a water-gas shift reaction to produce an output stream primarily including H2 and CO2; an anode gas oxidizer (AGO); and an absorption system including an absorber column that absorbs the CO2 from the output stream in a solvent and outputs a resultant gas including H2 and a hydrocarbon that is at least partially recycled to the anode, and a stripper column that regenerates the solvent and outputs a CO2-rich stream. The AGO is configured to oxidize at least a portion of the CO2-rich stream and an AGO input stream that includes one of a second portion of the anode exhaust or a portion of the output stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.