What material is best for a converter to ensure durability?
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The converter keeps leaking air; I’d like to get a more durable one. Could everyone please help?
Generally, carbon steel is the material that is commonly used; converters often leak air, and the key is to control the moisture content in hydrogen chloride. Well, using stainless steel is simply too expensive.
It is recommended to take a look at the disadvantages of using 304 stainless steel in converters: http://bbs.hcbbs.com/thread-80406-1-1.html
What size of device? Conversion gas leakage and material? In China, the converters and the high-temperature pipes used for conversion were not subjected to any stress calculations at all, which is why there is a lot of air leakage. I guess this setup of yours is about 10 years old?
Large ones can use 304 stainless steel, while small ones can only use A3; if possible, aluminum spraying can be applied
Of course, using stainless steel is better. This post was last edited by in the blink of an eye on 2009-4-16 09:16]
It’s best to use stainless steel converters, of course. In my opinion, the operation parameters are very important – such as the speed at which heating or cooling takes place, and the frequency of starting up and shutting down the converter. A certain factory’s carbon steel converters remained leak-free for almost 5 years, while in other factories, stainless steel converters started leaking after just two or three years.
Find a reputable manufacturer to conduct a thorough analysis and carry out proper design work. It should last a few more years.
What kind of process, what type of converter? If it’s an old-style internal heat exchanger, gas leakage is quite normal.
Small-scale use of CS. Large-scale use of SS
The small conversion furnace used in the 40,000 tons/year sulfuric acid plant is made of 16MnR steel plate with aluminum spraying; it has no lining, and it has performed well – it is now in use for over 18 years.