Are there any experts on polymer polyols POP in this forum?
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May I ask the experts: is the viscosity of such media very high? What type of pump is used for transportation, and are there any special considerations when transporting such media?
The viscosity of the product is generally around four to five thousand. For pumps, a centrifugal pump with a high flow rate will suffice for the reactor section; as for pumps used for transporting the product in storage tanks, screw pumps or reciprocating pumps can all be used, depending on your choice. The medium should have a high viscosity; it’s best to have steam heating, otherwise it’s difficult to operate in winter.
In other words, can only screw pumps or reciprocating pumps be used as the transfer medium?
In the reactor and purification stages, a centrifugal pump is sufficient, as the temperature is relatively high and the viscosity is somewhat lower； For the transfer pump used in product tanks, screw pumps are a better choice; after all, the temperature inside the tanks is usually around 50 to 60 degrees, and the viscosity is high, making it difficult for centrifugal pumps to handle the transfer.
At my end, the viscosity is 800 MPa at 80 degrees, 368 MPa at 100 degrees, and 220 MPa at 125 degrees; the density is 980 kg/m³. Can a centrifugal pump be used in this situation? Does the motor need an inverter?
Cam rotors are commonly used in general pop production equipment