Methods of plugging a permeable porous cellular body
US12103195B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2019 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Jun 28, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D46/0001
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of plugging a permeable porous cellular body (14) comprises: contacting the permeable porous cellular body (14) with a plugging mixture (100), the permeable porous cellular body (14) defining a plurality of channels (26); forcing the plugging mixture (100) into the plurality of channels (26) until a maximum, self-limiting, depth (114) of plugging mixture (100) is disposed within the plurality of channels (26); and maintaining a constant flow rate of the plugging mixture (100) into the plurality of channels until (26) a pressure on the plugging mixture (100) elevates to a predetermined pressure. Alternatively, the method comprises forcing the plugging mixture (100) into the plurality of channels (26) utilizing the application of a constant pressure over time until a maximum, self-limiting, depth (114) of the plugging mixture (100) is disposed within the plurality of channels (26); and maintaining the constant pressure applied to the plugging mixture (100) until flow of the plugging mixture (100) into the channels (26) decays from an initial flow rate to a predetermined flow rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.