Choose a low-flow pump
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Gentlemen, the pump parameters required are as follows: the medium is a 20% sodium hydroxide solution containing a small amount of fine fibers; the temperature is around 45–50°C; the density is approximately 1200 kg/m3; the viscosity is about 0.002 Pas. The flow rate should be between 0.4 and 2.0 m3/h, with this value needing to be adjusted according to the operating conditions. As for the head requirement, approximately 30 meters should suffice. Originally, it was held in place by gravity, with the flow rate being controlled using manual valves and flow meters; the fibers had little impact on rotameters. Now it needs to be placed on the ground, and variable frequency control is desired – a centrifugal pump can be used when the flow rate is high. Which type of pump is better for such operating conditions? I’d like more specific information
This post was last edited by Pseudo Xiaobao on 2015-12-17 09:40. Diaphragm pumps should work fine; the manual states that they are suitable for cleaning fluids with high pressure and low flow rates. Does liquid containing fibers count as a cleaning fluid? The fibers should be less than 3 mm in length, with a normal concentration of less than 0.2%. More fibers may accumulate at the bottom of the tank