Process gas filtration
US8398732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2007 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Jun 25, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B21/003
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a spray drying system provided with a gas filtering system, which system is intended for use in the pharmaceutical industry for aseptic production of sterile pharmaceutical products or in other industries e.g. production of food, where an intake of sterile air for the drying process is necessary. The spray drying system for providing a particulate material comprises a spray drying chamber (3), after treatment equipment (4, 5) placed downstream of the spray drying chamber and a process gas heater (2) placed upstream in relation to the spray drying chamber (3), wherein an inlet filter (1) capable of removing microorganisms at a temperature below 140° C., is placed upstream of the process gas heater (2) and that the process gas heater (2) is a non-flaking heater.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.