5 replies to this topic

[afshinli]

Hi to everybody

I'm working in hydrogen production unit that works with steam reforming process.

after changing of unit catalysts we have some problems!!!

the first that conductivity in deaerator is higher than normal range ( 120 micros/cm )!!

second that seems is relative with first problem is that in the out let of high temperature shift conversion reactor we have less hydrogen percentage than inlet of reactor!! that means in this reactor we have hydrogen consumption !!! please help me with your comments ...

for example : refromer outlet : H2=79, Methane=2, CO=4, CO2=14, N2=1 mol%

                         HTSC outlet : H2=73, Methane=2, CO=.2, CO2=23.8, N2=1 mol%

[Pilesar]

I see no relation between the two problems you list. The material balance you provide does not balance. There are many more carbon atoms measured in the shift outlet than in the inlet. Resolve your material balance and identify why the sample shows extra carbon. That may be easier to track than hydrogen!

[PingPong]

There is something wrong with the lab analyses of the HTSC outlet.

And if so then the analyses of the reformer outlet is also suspect.

 

See this old topic: https://www.cheresou...ormer-catalyst/

 

You can use the same technique that I used to verify the balance of atoms of all elements, both for the reformer and the HTSC.

[afshinli]

I see no relation between the two problems you list. The material balance you provide does not balance. There are many more carbon atoms measured in the shift outlet than in the inlet. Resolve your material balance and identify why the sample shows extra carbon. That may be easier to track than hydrogen!

thanks for your answer ...

but what Couse that conductivity be high ?? I thought that one thing has produced in high shift rector!! like methanol or NH3 ...

I need your help

Edited by afshinli, 21 December 2022 - 01:36 AM.

[Pilesar]

If the deaerator in the boiler feed water system is off-spec, how does that cause a problem with the shift converter? Can you provide a process flow diagram and additional relevant details?

[afshinli]

If the deaerator in the boiler feed water system is off-spec, how does that cause a problem with the shift converter? Can you provide a process flow diagram and additional relevant details?

thanks...

I think ammonia or other byproduct of shift reactor Couse that problem and deaerator cannot separate these gases ...