Method and composition for cleaning tubular systems employing moving three-phase contact lines
US8114221B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Nov 3, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B9/0326
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The narrow diameter channel has a diameter of about 0.02 centimeter to about 1.6 centimeters and a length of about 0.75 meter to about 5 meters. The internal surface of the narrow diameter channel is hydrophobic, and the surface flow entities exhibit an advancing contact angle of greater than 50 degrees and a receding contact angle of greater than zero degree. The detachment of contaminants from the internal surface of the narrow diameter channel is produced by a sweeping of the internal surface of the narrow diameter channel with the three-phase contact lines of the surface flow entities, the cleaning medium is not predispersed in the gas before entering the channel, and less that 10% of the surface of the channel is covered by a contiguous annular film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.