The following is a common selection of acid pump instructions:
1, hydrochloric acid pump commonly used hydrochloric acid maximum concentration of 38%, its nature is corrosive, the proportion is not large.
If there is no impurity in the medium, it is recommended to choose a leakage-free CQB fluorine plastic magnetic pump; if there is a small amount of impurities, it is recommended to use IHF lining fluorocarbon centrifugal pump with relatively good corrosion and abrasion resistance; if it contains more impurity particles, Wear-resistant, wear-resistant, wear-resistant UHB-ZK-type corrosion-resistant mortar 2, sulfuric acid pump sulfuric acid pump is divided into sulfuric acid pump and concentrated sulfuric acid pump, the former a larger range of options, dilute sulfuric acid pump can choose engineering plastics pump, F46 pump , F26 pumps, the latter (concentrated sulfuric acid pump) can only choose Fluoroplastics (F46) pump, because concentrated sulfuric acid will corrode the common engineering plastics, but the fluorine plastic will not be corroded. Also note that the high density of concentrated sulfuric acid, pump power when the pump should pay attention to with large, simple algorithm for shaft power * 1.84 is the shaft power delivery concentrated sulfuric acid.
3, hydrofluoric acid hydrofluoric acid is very corrosive, it is recommended to use fluorine plastic magnetic pump, (and must be the series of ceramic pump parts replaced by hydrofluoric acid-resistant material)
4, nitric acid nitric acid pump also recommended the use of fluorine plastic magnetic pump, and rubber seals to be replaced by PTFE material.
5, acetic acid It is one of the most corrosive substances in organic acids, ordinary steel in all concentrations and temperatures of acetic acid will be severely corrosive, stainless steel is an excellent anti-acetic acid material, 316 stainless steel containing molybdenum can also be suitable for high temperature and Dilute acetic acid steam. For high temperature and high concentration of acetic acid or other corrosive media and other harsh requirements, the choice of high-alloy stainless steel or fluorine plastic magnetic pump. Such as CQB magnetic pump, stainless steel magnetic pump 6, salt water (sea water)
Ordinary steel in sodium chloride solution and seawater, salt water corrosion rate is not too high, the general need to use paint protection; various types of stainless steel also have a low uniform corrosion rate, but may cause localized corrosion due to chloride ions, the proposed selection of fluoroplastic Centrifugal pumps, such as IHF-type fluoroplastic centrifugal pumps, can also be used without leakage of fluorine plastic magnetic pump.
7, Sealed seal form: Magnetic pump is a static seal, so you can not consider the sealing, and centrifugal pumps generally use external bellows mechanical seal, the corrosion resistance and wear resistance are better, such as the delivery of the media containing particles, then Hard to hard mechanical seals can be used.
1, hydrochloric acid pump commonly used hydrochloric acid maximum concentration of 38%, its nature is corrosive, the proportion is not large.
If there is no impurity in the medium, it is recommended to choose a leakage-free CQB fluorine plastic magnetic pump; if there is a small amount of impurities, it is recommended to use IHF lining fluorocarbon centrifugal pump with relatively good corrosion and abrasion resistance; if it contains more impurity particles, Wear-resistant, wear-resistant, wear-resistant UHB-ZK-type corrosion-resistant mortar 2, sulfuric acid pump sulfuric acid pump is divided into sulfuric acid pump and concentrated sulfuric acid pump, the former a larger range of options, dilute sulfuric acid pump can choose engineering plastics pump, F46 pump , F26 pumps, the latter (concentrated sulfuric acid pump) can only choose Fluoroplastics (F46) pump, because concentrated sulfuric acid will corrode the common engineering plastics, but the fluorine plastic will not be corroded. Also note that the high density of concentrated sulfuric acid, pump power when the pump should pay attention to with large, simple algorithm for shaft power * 1.84 is the shaft power delivery concentrated sulfuric acid.
3, hydrofluoric acid hydrofluoric acid is very corrosive, it is recommended to use fluorine plastic magnetic pump, (and must be the series of ceramic pump parts replaced by hydrofluoric acid-resistant material)
4, nitric acid nitric acid pump also recommended the use of fluorine plastic magnetic pump, and rubber seals to be replaced by PTFE material.
5, acetic acid It is one of the most corrosive substances in organic acids, ordinary steel in all concentrations and temperatures of acetic acid will be severely corrosive, stainless steel is an excellent anti-acetic acid material, 316 stainless steel containing molybdenum can also be suitable for high temperature and Dilute acetic acid steam. For high temperature and high concentration of acetic acid or other corrosive media and other harsh requirements, the choice of high-alloy stainless steel or fluorine plastic magnetic pump. Such as CQB magnetic pump, stainless steel magnetic pump 6, salt water (sea water)
Ordinary steel in sodium chloride solution and seawater, salt water corrosion rate is not too high, the general need to use paint protection; various types of stainless steel also have a low uniform corrosion rate, but may cause localized corrosion due to chloride ions, the proposed selection of fluoroplastic Centrifugal pumps, such as IHF-type fluoroplastic centrifugal pumps, can also be used without leakage of fluorine plastic magnetic pump.
7, Sealed seal form: Magnetic pump is a static seal, so you can not consider the sealing, and centrifugal pumps generally use external bellows mechanical seal, the corrosion resistance and wear resistance are better, such as the delivery of the media containing particles, then Hard to hard mechanical seals can be used.
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