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Author: Subject: high temprerature seal up to 900 celsius
nikotyna1939
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[*] posted on 7-4-2019 at 21:38
high temprerature seal up to 900 celsius


what kind of material is used for tight check valve seal
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subskune
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[*] posted on 8-4-2019 at 00:40


How do you get a seal to 900C? This is much for an amateur setup! What is going through, what is the seal made of? Depending on usage you might go with ceramic wool, or graphite powder



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nikotyna1939
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[*] posted on 9-4-2019 at 00:09


i need the seal for steam and naphtha vapor

[Edited on 10-4-2019 by nikotyna1939]
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Ubya
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[*] posted on 9-4-2019 at 02:33


still want to try steam cracking of naphta to get benzene uh.
at 900°C steam burns steel (oxidizes it quite rapidly).
again i suggest you to give up, if you want just to get benzene from a cheap source pick PET bottles from the streets, they are free, add calcium hydroxide or sodium hydroxide and heat it (not to 900°C...). still high temperatures as you like, but not a bomb anymore





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wg48temp9
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[*] posted on 9-4-2019 at 04:05


Quote: Originally posted by nikotyna1939  
what kind of material is used for tight check valve seal


I guess a metal to metal seal. But at 900C you probably need an exotic metal alloy like Inconel which will be expensive.

If you search for high temperature check valve you will find various examples.




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rockyit98
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[*] posted on 12-4-2019 at 08:23


use stainless steel. http://www.ssina.com/composition/temperature.html
i am at the same problem with steam 900C for making activated carbon like cody did.
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monolithic
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[*] posted on 12-4-2019 at 09:48


How are you getting steam to 900C unless you're superheating under absurd pressure?
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Ubya
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[*] posted on 12-4-2019 at 10:02


Quote: Originally posted by monolithic  
How are you getting steam to 900C unless you're superheating under absurd pressure?


steam can get to 900°C even at atmospheric pressure, just heat it.





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