Selection of pumps in the acetic acid production process

Leak-free pumps such as magnetic pumps, shielded pumps, diaphragm pumps, etc., can be considered. The materials must be selected to be resistant to medium corrosion, and special consideration should be given to the material of the shaft (corrosion resistance and strength).

Choose chemical pumps with PTFE lining!

2# bage: Can’t a centrifugal pump be used? I read that for applications where the viscosity is relatively low and the required head is appropriate, centrifugal pumps are generally used? Are all three of these you mentioned centrifugal pumps? So how should the model number be written? Thank you for the guidance...

It is best to use leak-free magnetic pumps. Acetic acid, especially dilute acetic acid used in the production process, is quite corrosive to equipment; Hastelloy can be used as a material for such pumps. As far as I know, at least 316L material should be used! Even when a centrifugal pump is used, it is still a special-material pump; however, if the mechanical seal of a centrifugal pump leaks, it can be quite troublesome

There are several applications that require zirconium pumps, and it seems that no company in China is capable of manufacturing them at present. It’s a blank space; however, Xi’an High-Pressure Pump and Valve Factory is considering producing zirconium pumps, hoping for success, as imported ones are extremely expensive.

Material of the pump: 1. When in contact with the mother liquor at temperatures of 260–300 degrees Celsius, zirconium must be used as the material. However, the variable frequency operation needs to be taken into consideration based on the required pumping head. Since zirconium becomes hard and brittle at low temperatures, rapidly increasing the rotation speed can cause the pump shaft to break. 2. In contact with acidic media, containing corrosive substances such as hydrogen iodide. In reducing environments, Hastelloy pumps are recommended; magnetic pumps are also recommended, with the internal magnets or their linings requiring Hastelloy. 3. In a dilute acetic acid medium, 316L material is recommended. 4. In acetic acid production, a variety of pumps such as variable-frequency pumps, high-speed pumps, magnetic drive pumps, centrifugal pumps, gear pumps, and piston pumps are required as needed; given the wide range of pump types available for use in acetic acid production, careful selection is necessary.

I have good news to share with everyone: the zirconium pump developed by Xi’an Pump Valve has been successfully created.

Who has the contact information for Xi’an Pump and Valve Factory? Please let me know; thanks in advance!

Our company uses imported magnetic pumps; they have been in use for 5 years now and perform very well.

What type of pump does your company use for the mother liquor circulation pump? Please give an introduction.