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[daraj]

Hi, during early stages of process design, the capital costs arrived at can often be erroneous due to wrong MOC selection. I am looking at an application, a process where hydrocarbons and gases like methane, hydrogen, Benzene, naphthalene etc. are produced in a process vessel at high temperature (820-840C and 4-8 bar) and maybe a carburizing atmosphere.

It is difficult to zone on the right choice of MOC with given open literature or handbooks. What I learned so far

is that HP, HK type alloys with high Ni, Cr and some Nb, Si content might help or microalloys like HpNb.

 

Want to know, in the absence of a dedicated metallurgist, what is the source/reference I can use to get as close to the right answer possible, maybe erring on the side of caution as to choosing a conservative MOC.

 

Any closest common alloy that can give similar performance would also be helpful from a cost estimation point of view