Stork Friesland B.v.

Antonius Cornelus Boersen

Antonius Johannes Bouman

A device for preparing a spray-dried product includes a drying chamber with a distribution element placed therein for atomizing liquid to be spray-dried, an element for supplying drying gas, an element supplying a stream of solid particles to a stream of droplets atomized from the distribution element, and one or more fluidized beds, each having at least one bottom plate with openings which has gas supply structure opening out at the underside thereof. These fluidized beds are placed connected to each other inside the drying chamber, opposite the distribution element, the above in such a way that the combined streams of droplets from the distribution element and solid particles fall essentially into the first bed, and conveyance of material from the first bed to the second bed can take place.

Device and method for preparing a spray-dried product

A device for preparing a spray-dried product is described, the distance between the distribution element and a fluidized bed in the device being such that the particles have essentially reached their critical moisture content. A method showing the mixing of the primary liquid droplets delivered by the distribution element and solid particles is also specified.

Device for preparing a spray-dried product and method for preparing a

Described is a device for obtaining a foam spray-dried product of predetermined bulk density. Thereto a nozzle for spraying a foaming gas comprising liquid is surrounded by a tube for supplying a gas which comprises dry particulate material to the jet of nozzle. Means are present to accurately control the ratio of solids in the liquid to be sprayed and the dry particulate material. The method described that the dry particulate material is made to collide with the jet from the nozzle and that the speed of the gas transporting said dry material is lower than 20 m/sec and preferably from 6 to 12 m/sec.

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Hillegom, Netherlands

Antonius Cornelus Boersen