What is the material of the reactor in high-pressure melamine production plants?
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If melamine is produced using the high-pressure method, what material is the reactor made of?
It should be 316L, I guess
Outech Technology, 8.0 MPa production. The material is C-276 (a high-nickel alloy steel, commonly known as Hastelloy).
Reply to 4# fjhuyuyang: Hastelloy is indeed a very expensive material. I wonder if urea-grade stainless steel can be used as a substitute? Please, experts on high-pressure melamine, could you explain in detail? Hehe o
No, the temperature is too high and the pressure is too high.
This post was last edited by lxq700918 on 2010-8-17 at 13:27. It involves European technology and an 8.0 MPa production process; the reaction temperature is 380 degrees, and the materials required must be both heat-resistant and corrosion-resistant. Therefore, urea-grade stainless steel cannot be used as a substitute, not even 25-22-2.
I would like to ask expert fjhuyuyang: Are there any manufacturers in China that produce C-276 material (a high-nickel alloy steel, commonly known as Hastelloy)?
There are no manufacturers in China that produce C-276 (a high-nickel alloy steel, commonly known as Hastelloy), but there are agents who supply it. For example: Xi’an Nuclear Equipment Factory, Nanjing Simait, etc. With the same equipment, domestic processing is more than half cheaper than fully imported ones.