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Pr. Abdul Karim Salim ALLAF got his Master of Science from Lebanese University on 1973, Doctorate from Paris XI on 1976 and a PhD (Doctorat d’Etat from Toulouse University on 1981). His main work has concerned thermodynamics and process Engineering.
Pr. ALLAF is the Director of the Laboratory Mastering of Technologies for Agro-Industry LMTAI. He has on charge the Department of Process Engineering at La Rochelle University in France.
Pr. Karim ALLAF has 10 Patents and 24 international extensions; eight of them concern the DIC technology (Instantaneous Controlled Pressure Drop: Détente Instantanée Contrôlée). He has published 121 papers in international scientific journals, and participated as invited chairman to about 38 conferences and seminars.
Pr. ALLAF has managed large collaboration activities with French, European and international industries. On January 1999, he created a DIC Transfer Center in La Rochelle University, and contributed to the creation of three innovative enterprises in France and in Italy.
The ALLAF’s research work is mainly based on fundamental approach concerning instantaneous autovaporization and the correlation between structure and technological aptitude. He identified the ALHADDAD paradox of opposite gradients of temperature and vapor partial pressure for explaining why kinetics of removing residual water vapor in structured material is too low.
The main drying processes he has defined, optimized and used in various industries since 1987, may be divided into four families of methods:
- Dehydration by Successive Pressure – Drops DDS
- Swell-drying by coupling hot air drying to texturing by Instantaneous Controlled Pressure-drop DIC
- Vacuum Controlled Extrusion and Spray-Drying VCESD for producing large specific surface area powders with some types of specific materials depending of their own thermo-hydro-rheology behavior
- Three Stage Spray-Drying 3S-SD by inserting a stage of DIC between spraying and fluidized/vibrating final drying.
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