1. Evaluation of low energy drying by novel nozzle concept
Project Leader: Maykel Verschuren (until 2018: Martijn Fox (NIZO food research))
Researchers: Gunther Slowik (Swirl Flow Systems), Jasper Vollenbroek (FrieslandCampina), Roel Moonen (Danone), Anton Wemmers (ECN)
Partners: FrieslandCampina, Nutricia, Corbion, Unilever, NIZO food research, ECN, Swirl Flow Systems
Budget: k€ 302
ISPT Cluster: Drying and Dewatering (DR-20-07)
Objective:
Test whether the principle of the nozzle works according to its promises.
To estimate economic feasibility by making a business case.
Motivation:
Spray drying is characterized by high investments and high energy consumption.
Pressure and flow are correlated in regular pressure nozzles. This affects the particle size distribution during operation.
Working principle SFS nozzle:
Split feed in two flows.
One flow to two large entrance channels, one flow to two small entrance channels.
Radial velocity can be controlled, thus flow and pressure are decoupled (see Figure).
Control of particle size distribution.
Project scope:
Testing the concept with water and model fluids at pilot scale and larger scale (<1000 kg/h).
Testing (powder production) at pilot scale with non-competitive product.
Applicability:
Food, feed, pharma, chemicals
SFS nozzle
Nozzle pressure vs. flow rate. Pressure and flow can be decoupled by opening or closing the valve.
Inline laser measurement setup at NIZO
This project is co-funded by TKI-E&I with the supplementary grant 'TKI- Toeslag' for Topconsortia for Knowledge and Innovation (TKI’s) of the Ministry of Economic Affairs and Climate Policy.
SFS nozzle