Method for monitoring and/or controlling a granulation, coating and drying process
US6383553B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1999 |
| Grant date | May 7, 2002 |
| Priority date | — |
| Expiry date | Sep 24, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2208/00699
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and a device function for monitoring and/or controlling and regulating a granulation, agglomeration, instantization, coating and drying process in a fluidized layer or a moving bulk by determining the product moisture. At least during one process segment the total product moisture is measured substantially continuously over a period of seconds, in a contact-free manner using electromagnetic radiation in the high frequency or microwave range, by evaluation of the attenuation of the radiation as a measure of this total product moisture. Taking into account the product temperature, the measurement result is used to hold the total product moisture in a pre-determined range via a control circuit by changing the spray rate and/or the gas temperature and/or the volume flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.