Method for underground separation of components in sulfur-containing flue gas and sequestration of carbon dioxide and sulfides
US12203346B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2024 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Aug 20, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2258/0283
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention disclosed a method for underground separation of components in sulfur-containing flue gas and sequestration of carbon dioxide and sulfides, comprising: injecting sulfur-containing flue gas into injection well which is arranged in a well pattern of a sequestrated aquifer in advance; transiting and injecting formation water into the formation at a first preset injection speed by injection well of the well pattern after injecting the sulfur-containing flue gas for a first preset time, maintaining the first formation pressure, and conducting water drainage and gas production by a production well of the well pattern in a mode of a fixed bottom hole flowing pressure; and determining the well shut-in time according to the nitrogen molar concentration of the production well and conducting well shut-in. The separated N2 is produced, while the separated CO2 and sulfides are sequestered in aquifer, achieving effective underground separation of the flue gas components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.