Sulfuric acid corrosion resistance is very strong, what the material of pump?

Sulfuric acid corrosion, what kind of pump is suitable? Such as: medium: 98% sulfuric acid medium: 1. 6 medium temperature: room temperature medium solids content: 1% tiny particles conveying flow design: 25 cubic meters/hour delivery head design: description of 18 meters selection: a, material: could have sulfuric acid resistant material has a lot of different concentration and temperature of sulfuric acid corrosion of material difference is bigger, the concentration is above 80%, the temperature is less than 80 ℃ concentrated sulfuric acid, carbon steel and cast iron has good corrosion resistance, but it is not suitable for high-speed flow of sulfuric acid, is not used as a material of pump valve. Ordinary stainless steel such as 304 ( 0Cr18Ni9) , 316 ( 0Cr18Ni12Mo2Ti) Also limited use in sulfuric acid medium. So transport of sulfuric acid pump valve usually use high silicon cast iron ( Casting and machining is difficult) , high alloy stainless steel, 20 alloy) Manufacturing. Fluorine plastic has good acid resistance, the use of lining fluoride pump ( F46) Is a kind of more economical choice, recommend the use of fluorine plastic (anhui gold pump valve Ptfe/F46) Because the material not only has excellent corrosion resistance, its sealing and mechanical strength also is significant. To ensure the safety in the process of transport of sulfuric acid and boast skillful. It is recommended that fluorine plastic material for sulfuric acid pump. Second, the pump type: conveying ratio is 1. 6 high proportion of sulfuric acid, magnetic drive pump is not ideal, because magnetic torque of magnetic pump can not meet the requirements, is likely to lead to & other; Demagnetization & throughout; Or & other Heating & throughout; Such bad phenomena ( Unless the selection of the magnetic coupling for high magnetic performance & other; Rare earth magnetic cylinder & throughout; , but it also increased the cost of the water pump) Porcelain jar, anhui gold pump valve made of rare earths outside magnetic ensures that the quality requirements, the magnetic pump can allow customers rest assured purchase. Three, choose model according to anhui gold standard table centrifugal pump performance parameters, choice of models for: IHF65 - 50 - Or CQB65-125 50 - 125, machine sealing options: four fluorine plastic centrifugal pump mechanical seal, will be used in the medium containing 1% of tiny particles, machine choice wearability of packer seal - - - - - - - Carbide machine closure. Fluorine plastic magnetic water pump with magnetic drive the rotor to complete delivery, does not need mechanical seal, such use can increase the stability of the pump without leakage, environmental protection. Five, the motor power problem: the proportion of sulfuric acid is 1. 6, we can according to a simple formula to calculate how much is the actual use of shaft power pump work, the actual use of shaft power = ( Water test) Shaft power & times; The proportion of ( Note: the water test of shaft power generally in the manufacturer's specifications or selection samples have)
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