Can PPR (polypropylene) pipes be used as pipelines for transporting toluene at 50-60 degrees Celsius?
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We are carrying out equipment installation, and we are facing a problem: the fluorinated lining pipes ordered are not sufficient. Can PPR (polypropylene) pipes be used as pipelines for transporting toluene at 50-60 degrees Celsius (containing HCL)?
I’m not sure about the FRPP-reinforced polypropylene pipes mentioned by the original poster; if they really can’t be used, then they can’t be used even at 25°C. Stainless steel can be used if conditions permit.
Toluene is a good and commonly used solvent; it has the ability to swell and dissolve polypropylene. As far as I remember, toluene can also dissolve chlorinated polypropylene, so it is recommended not to use PPR as a material for pipes. . The poster can consult pipe manufacturers such as Anshan Alibei or Zhejiang Yebaitong.
Reply 1# shenhanbing: FRPP pipes should be used with caution for benzene and toluene at temperatures below 60°C, and cannot be used at temperatures above 65°C. So overall, there’s no need to use it. And since it contains HCL, using stainless steel is definitely not an option either. It seems you’ll have to hurry up and purchase fluorinated pipes.
It’s okay for short-term use, but it should swell and deform. Hurry up and order steel-lined PTFE, preferably molded PTFE, making sure to consider static electricity discharge.