Process and device for controlling a flow of particles in a pipe
US5426982A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1993 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Dec 15, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2208/00982
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to measure for example the velocity of particles moving within various pipes or enclosures (1), such as catalyst balls circulating in continuous reforming plants, a channel (2) with a section suited to that of the particles, connected to a source of fluid of determined flow rate (4), opens therein and the pressure variations in this channel, resulting from the flow of the particles circulating past the end thereof, which modify the free flowing of the fluid towards the pipe, are measured. The particle velocity is notably determined through an auto-correlation of the signal translating the pressure variations by means of a processing system (6). Two fluid-fed channels (7, 8) may also open onto two different locations along the pipe and, through a crosscorrelation of the signals translating respectively the pressure variations, the velocity and the section of the circulating particles may for example be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.