PHARMASPRAY
Cleaning In Place (CIP) Spray Nozzles
In this section a brief elaboration will clear the concept of spray nozzles selection for requirement and there various factors which affects and plays vital role in extent of cleaning required.
Following some factors should well studied when selecting CIP spray nozzles :
1) Extent of Cleaning
The nature of substance to be cleaned from tank should be considered like, solubility, viscosity, nature of
powder / pigment material.
Based on all this factors we can decide which type of impact is necessary to flush substance from all internal equipments :
a) Rinsing : By virtue mass removal of substance and thick layers get dissolved by water or solvent
b) Cleaning : After rinsing cleaning could be done with high pressure to remove rest of the residue from internal.
c) High Impact Cleaning : Those substances which could not be satisfactory cleaned by means of cleaning cycle, should be treated with high pressure of cleaning fluid.
d) Sanitizing : Sanitizer chemical is applied after cleaning to kill microorganisms and bacteria.
e) Disinfecting : Same procedure is applied for disinfectant
f) Sterilizing : It kills all kinds of bacteria
Heat energy's role
Viscosity of fluids decreases with increasing temperature so, effective cleaning can be achieved by using hot cleaning fluids or by increasing temperature of vessel tank by means of steam jackets. By virtue of this viscosity of substances to be cleaned decrease and effective cleanliness increases
Spray Pattern
If cleaning is done manually then stationery spray nozzles are recommended to use. Ex. Flat spary nozzle, Straight jet spray nozzle, Full cone spray nozzle. For CIP self rotating spray nozzles gives droplets spray to clean the substances. For higher tank sizes tank cleaning machine is recommended as it gives cyclic control speed of rotation which provide the high impact jet cleaning with long impact distances.
Obstructions due to internals
If tank is having a, central agitation/ mixing arrangement then multiple spray nozzle should be utilized
