Fluorine lined pump is a new type of corrosion resistant chemical process pump widely used at present. The main types include fluorine magnetic pump, lined fluorine self suction pump and lined fluorine centrifugal pump. Because of their respective characteristics, they can be adopted by many industries and fields, such as the characteristics of the leaky fluoro magnetic pump with absolute leakage, which can solve the safety problems caused by leakage in conveying inflammable, explosive and toxic media. Completely eliminate security risks, to bring security to the enterprise personnel property; fluorine pump is used to replace the traditional liquid pump, the pump compared with the traditional liquid pump, self suction height has been greatly improved at the same time, but also improves the efficiency of 50— 150%, while energy consumption also decreased, improve the production efficiency for the enterprise.
How should the fluorine pump be selected? This first depends on what medium you are delivering, the temperature of the medium, and the selection of several common corrosion resistant pumps.
1, pump for hydrochloric acid
The highest concentration of commonly used hydrochloric acid is 38%, so, basically as long as the hydrochloric acid pump flow components made of plastic on the line, but if from life, cost and other aspects to consider it, you can use FSB or CQB-F fluorine alloy pump magnetic pump, the price and performance of the two pump is satisfactory.
2, pump for sulphuric acid
Sulfuric acid pump into sulfuric acid pump pump with concentrated sulfuric acid, the former optional large range of sulfuric acid pump can choose plastic pump, ceramic pump, pump, pump F26 or F46, the latter (sulfuric acid pump) can only select fluorine plastic (F46) pump, because of concentrated sulfuric acid will corrode common engineering plastics however, the fluorine plastic will not corrode. It is also noted that the density of concentrated sulfuric acid is high. When selecting the pump, the motor power should be noted to match. The simple algorithm is &ldquo. The shaft power &rdquo and *1.84 are the shaft power when transporting concentrated sulfuric acid.
3, hydrofluoric acid
The corrosiveness of hydrofluoric acid is very strong, and it is suggested that the fluorine magnetic pump should be used (and the ceramic parts of the pump must be replaced with HF resistant material).
4, nitric acid
The nitric acid transport pump also recommends the use of fluoroplastic magnetic force pump, and the rubber seal ring should be changed into tetrafluoro material.
5, acetic acid
It is one of the most corrosive substances in organic acids. Ordinary steel will be severely corroded in acetic acid at all concentrations and temperatures. Stainless steel is excellent acetic acid resistant material. Molybdenum containing 316 stainless steel can also be applied to high temperature and dilute acetic acid steam. High alloy stainless steel or fluoroplastic magnetic pump can be used for high temperature and high concentration acetic acid or other harsh requirements for corrosion medium. Such as CQB magnetic pump, CQ316L stainless steel magnetic pump
6. Salt water (sea water)
Ordinary steel in Sodium Chloride Solution and sea water, salt water corrosion rate is not high, are generally required to use paint protection; all kinds of stainless steel has a very low corrosion rate, but may be due to localized corrosion caused by chloride ions, typically 316 stainless steel is better, but its price is higher, suggested the use of fluorine plastic centrifugal pump, such as IHF chemical centrifugal pump.
7. Seal
The form of sealing is: the magnetic pump is a static seal form, so it can not be considered for sealing. Centrifugal pump usually adopts external bellows mechanical seal. Its corrosion and abrasion resistance are all good. If the conveying medium contains particles, hard and rigid mechanical seals can be used. Magnetic pump, (and must change the ceramic parts of the pump to HF resistant material)
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