Pump for transporting concentrated sulfuric acid
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May I ask which expert knows what brand and model of pump is suitable for transporting concentrated sulfuric acid? I’d like to thank everyone here first!
Plastic pumps from Feiyatec in Germany are used to transport sulfuric acid on a large scale.
Dilute sulfuric acid can be pumped using high-silicon cast iron pumps or pumps lined with PTFE, while concentrated sulfuric acid can be pumped using carbon steel pumps and stainless steel pumps.
Case: Medium: 98% concentrated sulfuric acid; Specific gravity of the medium: 1.84; Medium temperature: room temperature; Content of solid particles in the medium: 1% in the form of fine particles. Designed transfer flow rate: 12 cubic meters per hour; Designed transfer head: 20 meters. Overview of the selection: 1. Material: There are many materials that can withstand concentrated sulfuric acid, but I recommend fluoroplastic (polytetrafluoroethylene/F46) as it not only possesses excellent corrosion resistance but also outstanding sealing properties and mechanical strength. To ensure safety and durability during the transportation of concentrated sulfuric acid. Therefore, fluoroplastics were determined as the material for the concentrated sulfuric acid pump. II. Pump type: For transporting highly concentrated sulfuric acid with a specific gravity of 1.84, magnetic drive pumps are clearly not an ideal choice, as the magnetic torque in such pumps is not sufficient, which can lead to problems such as demagnetization or temperature rise (unless a magnetic coupling with high magnetic performance, such as one made of rare earth materials, is used; however, this increases the cost of the pump). Therefore, I recommend using a centrifugal pump.
III. Model selection: Based on the **standard performance parameters for centrifugal pumps**, the selected model is IHF50-32-125.
IV. Motor power issue: Since the specific gravity of concentrated sulfuric acid is 1.84, we can use a simple formula to calculate the actual shaft power required for the pump to operate. The actual shaft power = (shaft power in clean water tests) × specific gravity. (Note: The shaft power values for clean water tests are usually provided in the manufacturer’s instructions or selection guides.) Thus, it can be calculated that the motor power required for this pump is at least “1.9 × 1.84 = 3.496”. Therefore, the motor power should be set at 4KW.
V. Seal selection: Normally, the seal does not need special attention, but since the medium contains 1% fine particles, a seal with high wear resistance – specifically, a cemented carbide seal – should be used. VI. Conclusion: In summary, for this type of concentrated sulfuric acid pump, the IHF50-32-125 model can be chosen; it has a motor power of 4KW and is equipped with a cemented carbide mechanical seal. The cost is approximately 4,390 yuan. I found some information online and also learned a bit about it – what do you think?
III. Model selection: Based on the **standard performance parameters for centrifugal pumps**, the selected model is IHF50-32-125.
IV. Motor power issue: Since the specific gravity of concentrated sulfuric acid is 1.84, we can use a simple formula to calculate the actual shaft power required for the pump to operate. The actual shaft power = (shaft power in clean water tests) × specific gravity. (Note: The shaft power values for clean water tests are usually provided in the manufacturer’s instructions or selection guides.) Thus, it can be calculated that the motor power required for this pump is at least “1.9 × 1.84 = 3.496”. Therefore, the motor power should be set at 4KW.
V. Seal selection: Normally, the seal does not need special attention, but since the medium contains 1% fine particles, a seal with high wear resistance – specifically, a cemented carbide seal – should be used. VI. Conclusion: In summary, for this type of concentrated sulfuric acid pump, the IHF50-32-125 model can be chosen; it has a motor power of 4KW and is equipped with a cemented carbide mechanical seal. The cost is approximately 4,390 yuan. I found some information online and also learned a bit about it – what do you think?
Many domestic manufacturers can produce PIFE
I chose the special sulfuric acid transfer pump from Xiangfan 525. The biggest challenge in transporting concentrated sulfuric acid is seal damage. The pump I chose has an immersion-type seal, meaning the entire seal is submerged in acid. This is also something I learned from a company. They brought a pump and placed it there, in the open air. The operator simply turned it on and off, with no maintenance at all. It worked for a whole year without breaking down; it’s unclear when it will fail now that I’ve left
Many people have offered suggestions, but I wonder what the flow rate and head pressure are for transporting concentrated sulfuric acid by the original poster?
Plastic pump, impeller with coating. Or a magnetic pump will also work!
Our unit uses magnetic pumps, which have no leaks and are easy to maintain.
We have a sulfuric acid production facility with a capacity of 800,000 tons. If the original poster needs it, I can help him look into it; I work in the field of instrumentation, but I really haven’t paid attention to this aspect!
For transporting concentrated sulfuric acid, a regular centrifugal pump is sufficient; carbon steel can be used as the material. If plastic is to be used, only PTFE is suitable, as ordinary plastics such as PVC and PP will burn due to the oxidizing properties of concentrated sulfuric acid and therefore cannot be used. Concentrated sulfuric acid forms a passivation layer on carbon steel, so regular carbon steel is adequate. For transportation on the surface, an IS pump will do, while submersible pumps can be used for transportation underwater.