Process for separating particles and apparatus for carrying out the process
US4813978A · kind A · utility
Inventors
Key dates
| Filing date | Dec 3, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Dec 3, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In the separation of particles, these are heated together with a gaseous carrier medium. Constitutents of these particles thus vaporize, are cooled in a cooler (21) and condense out. An apparatus for carrying out this process comprises a fan (1) and a heating device (7). A continuous process can be used on a large industrial scale. This is achieved when the particles and the carrier medium are mixed continuously and at controlled rates to give a fluidized blend. This blend is heated to a given temperature in a fluidized bed of a heating device (7), with the production of a mixture consisting of a vapor/gas mixture thus formed and of particle constituents remaining in the form of particles. After the mixture has left the heating device (7), the particle constituents remaining in the form of particles are precipitated and a vapor/gas mixture is passed forward in at least one closed circulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.