Here is a method, first of all depends on what you are transporting acid, the following to introduce you to several common acid-resistant pump selection method:
1, hydrochloric acid pump
The highest concentration of hydrochloric acid commonly used 38%, so, hydrochloric acid pump is basically as long as the flow components for the plastic material on the line, but if from the life, price, etc. to consider, you can use FSB fluorine alloy centrifugal pump or CQB -F magnetic pump, the price of these two pumps, performance is satisfactory.
2, sulfuric acid pump
Sulfuric acid pump is divided into dilute sulfuric acid pump and concentrated sulfuric acid pump, the former optional range is larger, dilute sulfuric acid pump can choose engineering plastic pump, ceramic pump, or F46 pump, F26 pump, which (concentrated sulfuric acid pump) can only Select Fluorine Plastic (F46) pump, because concentrated sulfuric acid will corrode ordinary engineering plastics, and fluorine plastic will not be corroded. Also note that the density of concentrated sulfuric acid, select the pump when the motor power should pay attention to large, simple algorithm for the "shaft power" * 1.84 is the transmission of concentrated sulfuric acid shaft power.
3, hydrofluoric acid
Hydrofluoric acid is very corrosive, it is recommended to use fluoroplastic magnetic pump, (and must be the series of ceramic parts of the pump into the material resistant to hydrofluoric acid).
Selection Method of Acidproof Pump
4, nitric acid
Nitric acid pump is also recommended to use fluorine plastic magnetic pump, and the rubber ring 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 serious corrosion, stainless steel is an excellent material resistant to acetic acid, molybdenum-containing 316 stainless steel can also be applied to high temperature and dilute acetic acid vapor . For high-temperature high-concentration acetic acid or other corrosive media containing other demanding requirements, the choice of high-alloy stainless steel or fluorine plastic magnetic pump. Such as CQB magnetic pump, CQ316L stainless steel magnetic pump
6, salt water (sea water)
Ordinary steel in sodium chloride solution and salt water, salt water corrosion rate is not too high, generally need to use paint protection; various types of stainless steel also has a very low uniform corrosion rate, but may be due to chloride ion caused localized corrosion, usually 316 stainless steel Better, but its price is higher, the proposed selection of fluorine plastic centrifugal pump, such as IHF chemical centrifugal pump.
7, sealed
Seal type: Magnetic pump for the static seal form, it can not consider the seal, and centrifugal pumps generally use external bellows mechanical seal, its wear resistance are good, such as the transmission medium containing particles, you can use hard On the hard mechanical seal.
1, hydrochloric acid pump
The highest concentration of hydrochloric acid commonly used 38%, so, hydrochloric acid pump is basically as long as the flow components for the plastic material on the line, but if from the life, price, etc. to consider, you can use FSB fluorine alloy centrifugal pump or CQB -F magnetic pump, the price of these two pumps, performance is satisfactory.
2, sulfuric acid pump
Sulfuric acid pump is divided into dilute sulfuric acid pump and concentrated sulfuric acid pump, the former optional range is larger, dilute sulfuric acid pump can choose engineering plastic pump, ceramic pump, or F46 pump, F26 pump, which (concentrated sulfuric acid pump) can only Select Fluorine Plastic (F46) pump, because concentrated sulfuric acid will corrode ordinary engineering plastics, and fluorine plastic will not be corroded. Also note that the density of concentrated sulfuric acid, select the pump when the motor power should pay attention to large, simple algorithm for the "shaft power" * 1.84 is the transmission of concentrated sulfuric acid shaft power.
3, hydrofluoric acid
Hydrofluoric acid is very corrosive, it is recommended to use fluoroplastic magnetic pump, (and must be the series of ceramic parts of the pump into the material resistant to hydrofluoric acid).
Selection Method of Acidproof Pump
4, nitric acid
Nitric acid pump is also recommended to use fluorine plastic magnetic pump, and the rubber ring 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 serious corrosion, stainless steel is an excellent material resistant to acetic acid, molybdenum-containing 316 stainless steel can also be applied to high temperature and dilute acetic acid vapor . For high-temperature high-concentration acetic acid or other corrosive media containing other demanding requirements, the choice of high-alloy stainless steel or fluorine plastic magnetic pump. Such as CQB magnetic pump, CQ316L stainless steel magnetic pump
6, salt water (sea water)
Ordinary steel in sodium chloride solution and salt water, salt water corrosion rate is not too high, generally need to use paint protection; various types of stainless steel also has a very low uniform corrosion rate, but may be due to chloride ion caused localized corrosion, usually 316 stainless steel Better, but its price is higher, the proposed selection of fluorine plastic centrifugal pump, such as IHF chemical centrifugal pump.
7, sealed
Seal type: Magnetic pump for the static seal form, it can not consider the seal, and centrifugal pumps generally use external bellows mechanical seal, its wear resistance are good, such as the transmission medium containing particles, you can use hard On the hard mechanical seal.
Manufacturers recommend: Shenlong stainless steel submersible pump
Keywords:Acid pump, hydrochloric acid pump, hydrochloric acid pump
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