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Material selection when the fluid chlorine content reaches 260,000 ppm

2015-06-28View Original

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Our liquefied natural gas pipeline contains 260,000 ppm of chlorine, and material engineers do not recommend the use of stainless steel. The pipeline material is A350 LF2 carbon steel; the transmitter diaphragm is intended to be made of Hastelloy, while the ball and seat of the ball valve are made of A350 LF2 with a hardened coating. In such cases, would it not be better to use carbon steel rather than stainless steel?
Reply #22015-06-28
What kind of chlorine is it? If it’s not a chloride, then it’s unnecessary. But the insurance for stainless steel?
Reply #32015-06-28
Austenitic stainless steels are also not resistant to chlorides
Reply #42015-06-28
What is the raw material with a content of 260,000?
Reply #52015-06-28
Use non-metallic materials directly, such as HDPE and UPVC
Reply #62015-06-28
To convert 260,000 ppm to a percentage, one divides by 10,000; thus it’s 26%. A substance with 26% chlorine content is most likely KClO3. Is this related to gas pipelines? CPVC or UPVC is recommended
Reply #72015-06-29
Yes, there is 26% NaCl. The liquid in the pipeline is natural gas liquid (methane, hexane, propane, etc.).
Reply #82021-01-21
Now, polyaniline can be chosen – it offers good value for money and excellent performance

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