Factors Affecting Cleaning

The cleaning process is a process in which mechanical action, chemical action and temperature effect work together. First of all, it is necessary to play a mechanical role, that is, at a higher flow rate, to enhance the impact force and wash away the attachments on the surface of the equipment. Then the cleaning agent plays a chemical role under the synergistic effect of temperature and surface active substances (increasing the cleaning temperature can speed up the chemical reaction speed and promote the decomposition of dirt; adding a surfactant to reduce the surface tension of the attachments on the surface of the equipment, make the dirt loose, The fouling film can be completely destroyed by the synergistic effect of the above factors.

The main factors that affect the cleaning quality:

The nature of the soil (hardness, adhesion, etc.).

The roughness of the device surface.

Mechanical force (scour strength).

Types and concentrations of cleaning agents and fungicides.

Action temperature.

Action time.

Ways to improve the cleaning speed under a certain cleaning temperature:

To achieve the best dispersion of the active substances in the dirt particles.

Action substances and dirt have a high reaction rate.

The decomposed products have better diffusivity.

(Note: Before 65°C, the cleaning time can be reduced by 1/2 for every 10°C increase in temperature.)

Under certain mechanical action, the way to improve the cleaning effect:

Enhances the stripping effect of dirt particles.

Increase the shear tension of the tank wall.

release the surface junction

CIP Cleaning in place cart

Factors that enhance the effect of mechanical action:

Increase the pressure of the cleaning fluid.

Increase volume flow and quantity.

Strengthen the mechanical action of the fluid.

Increase the liquid flow velocity (turbulent flow effect, the flow velocity is greater than 2m/s).

The ideal Reynolds number for a smooth tube wall is generally between 3000 and 9000.

Influence of pipe diameter (DN50~100)