Process for conveyance of powder materials in hyperdense phase applicable to bypassing obstacles
US6402437B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2001 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Jan 29, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G53/52
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Process for conveyance of a powder material in a hyperdense bed to bypass an obstacle, in which an obstacle bypass device including at least upstream, intermediate and downstream caissons is inserted between two horizontal conveyors, an upstream conveyor, and the downstream conveyor. At a device entry, at the upstream caisson lower duct is supplied with gas at pressure P1, the upstream caisson further including an upper duct which is a column. The intermediate caisson is between the upstream caisson and the downstream caisson at a level that bypasses the obstacle, a lower duct of which is fed with gas at pressure P3 and an upper duct of which is connected to the upper duct of the upstream caisson and to an upper duct of the downstream caisson. At a device outlet, at the downstream caisson, a lower duct is supplied with gas at pressure P2. The three caissons remain full of powder material kept in a potential fluidization state at all times, with a pressure difference P1−P2 being kept strictly positive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.