Spray fractionation disks and method of using the same
US5104522A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1990 |
| Grant date | Apr 14, 1992 |
| Priority date | — |
| Expiry date | May 9, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03B5/74
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Fractionation apparatus utilizes a rapidly rotating disk which receives a suspension of particles to be separated in a liquid. The rotating disk has a planar floor onto which the particle containing liquid is supplied. The floor is joined to an inclined inner wall in a smooth curve. An axially symmetric trip, located between the inner wall and an outwardly extending, preferably upwardly inclined skirt, maintains particles in the film away from the surface of the disk and results in more efficient ejection of large particles from the liquid. Smaller particles are ejected from the disk along the rim which descends from the skirt or from the edge at which the skirt joins the rim. The characteristics of the disk surface, the disk speed, the size and number of trips, the suspension feed rate, and other operating conditions can be selected such that highly efficient fractionations of particle suspensions, such as wood pulp slurries, can be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.