Back to results
US 11,772,007 B2Granted
Evaporator system
AssigneeDsm IP Assets B.V.
InventorsAndré Hunziker, Renè Lang, David Schaffner, Thomas Zwick
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method of manufacturing spray-dried powders. During the process, a solvent is used. The process is done in multiple steps such that the emulsification mass ratio is low when removal of the solvent is started. Preferred solvents are isopropyl acetate and ethyl acetate. The invention also relates to a set-up to run the inventive process at industrial scale.
Claims9
A system comprising an evaporator, a first mixing unit, a first vessel, a second vessel, and a second mixing unit,
- wherein the evaporator has a feed inlet, a vapor outlet and a liquid outlet,
- wherein the evaporator, the first mixing unit, the first vessel, and the second mixing unit are arranged such that a liquid composition can be fed from the first vessel into the first mixing unit, from the first mixing unit into the evaporator through the feed inlet of the evaporator, and from the evaporator through the liquid outlet of the evaporator into the second mixing unit,
- wherein the second vessel is arranged such that a liquid composition can be fed from the second vessel into (a) the first mixing unit and (b) into the second mixing unit without passing through the first mixing unit and
- wherein the first mixing unit or the second mixing unit comprise a high-pressure homogenizer, a colloid mill, a nozzle, or a rotor-stator homogenizer.
1 more element
Dependencies are inferred from the claim text.