What material should be chosen for a tower with a temperature of around 820 degrees?
Thread Content
This post was last edited by daili202b on 2015-10-27 at 17:46. I encountered a difficult problem today: the boss wants to build a tower that can withstand temperatures of 820 degrees Celsius, and he’s asking me to choose the materials. This is really frustrating. 820 degrees – it’s said that some kind of pyrolysis gas needs to be introduced, but I don’t understand it. I’d appreciate advice from those who are more knowledgeable. PS: For atmospheric pressure columns, I personally prefer to use 310S; I’m not sure how common it is to use
Over 800, NO8811 is required
This post was last edited by hankzh on 2015-6-28 08:08. ZG30Cr20Ni10, ZG35Cr26Ni12, and ZG45Ni35Cr26 are all options to consider.
Thank you. May I ask what standard this is? Does the standard specify the applicable temperatures for each type of steel, as well as the allowable stress and yield limit?
Please check Baidu: http://wenku.baidu.com/link?url=g3yE3JGtuYk6EI_WUX3wYnLlM2DRoj_gUH5YFYz17phZa4_ZZ7H67Zzmq1HIQirLoLmVDxzUfmX6_xAf98xKdJRm2TZS57f_PZASvtbaksO
This post was last edited by daili202b on 2015-10-26 at 14:44. Thank you all; after some research, I’m not sure if the following conclusions are correct Digital code New grade Old grade American standard code S31020 20Cr25Ni20 2Cr25Ni20 310 S31008 06Cr25Ni20 0Cr25Ni20 (1Cr25Ni20Si2) 310S S30908 06cr23Ni18 0Cr23Ni18 309 So the question is: how should the allowable stress be determined at such temperatures?
The owner needs to find out whether this tower is under pressure, and if so, what is the pressure level? It is suggested that the original poster refine the question; otherwise, everyone’s efforts to help will be in vain.
The inner wall is made of refractory castable, while the outer wall can be made of carbon steel; this is the structure used at the inlet of the pyrolysis gas quenching boiler. It’s cheaper than all of your options.