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Thanks,
Temperature is about 1600°F
Thermowells are installed in a boiler downstream the reformer.
On the other hand, see the corrosion present in the bypass duct before the damper downstream the boiler.
Yes, its metal dusting.
Look at the pictures attached (confidential)
De: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] En nombre de atul khatri
Enviado el: miércoles, 15 de abril de 2020 12:12 AM
Para: materials-welding@googlegroups.com
Asunto: Re: [MW:30758] hello
Hi Hernan,
Could you please give some more details ?
What is the temperature of your reformed gas ?
Are you sure it's because of metal dusting ?
What does your licencor says ?
Hope I can help you after your replies .
Br,
Atul
On Wed, Apr 15, 2020 at 9:19 AM Hernan Arturo Castillo Mier <Hernan.Castillo@ecopetrol.com.co> wrote:
We have metal dusting corrosion in two thermowells, downstream of Hydrogen reformer.
Any have experience about this problem?
Thermowells are Incolloy 800HT. This is not the best metallurgy for this corrosion problem.
According to NACE, the better metallurgy is Alloy 699 XA.
We are looking for any factory that produce thermowells using that metallurgy.
Thanks,
Hernán Castillo Mier
Senior Engineer
Reliability and integrity of Static equipments.
API 510 (33119)
Ecopetrol Cartagena Refinery
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