For the acid mixing mixer (inside the pump tank), what type of bolts are suitable for the flange connections?
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This post was last edited by danshenyouzui on 2019-8-16 21:40. (1) Mixed acid mixer (inside the pump tank), flange connection – what material should be used for the bolts? The acid temperature is 130–160°C, and the acid concentration is 97.5%–98.5%. (2) For the acid mixer, what material is suitable for the water jacket inside? Pure PTFE (due to strength issues), or 316L lined with PTFE? Or what material should be chosen?
High-silicon cast iron can withstand this temperature
I modified this structure back when I was at the factory: I eliminated the aforementioned flange connections and used an F4 tube that is inserted all the way through^_^ (Of course, there are also designs to enhance the structural integrity.)
Can it also resist acid mist and corrosion? At the water addition point, the temperature is high and the acid concentration fluctuates significantly.
High-silicon cast iron cannot be used to make bolts
That’s exactly how our company uses it, and the results are excellent
What acids are primarily used in the mixed acid? What components are included in it? What are the concentration and operational parameters, such as pressure? Is the pressure exerted on the internal water jacket positive or negative? Could you draw a simple diagram? There are many options available for bolt materials, and PTFE can be used for pipes. It can also be something else.