Method of controlling the size of the spray droplets of a spray nozzle apparatus for spray drying applications, the spray drying apparatus and the spray nozzle

摘要

Method of controlling the size of the spray droplets of an apparatus of the spray nozzle, in particular for the manufacture of food powders, supplied to the spray nozzle where the method comprises the following steps: a) providing a paste of a product to be sprayed by the spray nozzle; b) continuously determine the shear viscosity (η) of the paste of the product supplied to the spray nozzle; c) determine the mass flow rate (Qm) of the paste of the product supplied to the spray nozzle; d) determine the static pressure (P) of the paste of the product supplied to the spray nozzle; e) determine the density (ρ) of the paste of the product supplied to the spray nozzle; f) supply the data obtained in steps b) to e) to a control device comprising a computer and a memory; g) calculate the control data to adjust the spray nozzle on the basis of the data obtained in steps b) to e) and in the geometry parameters of the nozzle stored in the memory; h) send the control data as control signals to a spray nozzle control means and adjust the spray nozzle according to the above.