Enhancements to the air injection devices in a paper pulp flow for de-inking thereof
US5624609A · kind A · utility
7Cited by
27References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Nov 15, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/75
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air injector for the foaming of paper pulp, comprised of a hollow cylindrical tube inside which is arranged a cylindrical bore (3) leading into a convergent portion and a divergent portion (2a, 2b, 2c), said cylindrical bore being occluded by a stopper fitted with holes (8) providing a cylindrical air inlet chamber (3a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.