Flame Arrester Materials of Construction
Flame Arrester Materials of Construction
(OP)
Hi to all.
I need to replace a 6" flame arrestor due to corrosion. The MOC is Hastalloy C, and costs about 30K to replace. Repair is not possible due to the extent of corrosion. The vapors it is exposed to are a combination of wet HF and HCl, is low concentration (approx 1% to 5%) and ambient temp. Of course most of the balance is flammable gas.
My question is this; are there any flame arrestor designs that are corrosion resistant and made out of a coated or non metallic material?
Thanks in advance
I need to replace a 6" flame arrestor due to corrosion. The MOC is Hastalloy C, and costs about 30K to replace. Repair is not possible due to the extent of corrosion. The vapors it is exposed to are a combination of wet HF and HCl, is low concentration (approx 1% to 5%) and ambient temp. Of course most of the balance is flammable gas.
My question is this; are there any flame arrestor designs that are corrosion resistant and made out of a coated or non metallic material?
Thanks in advance





RE: Flame Arrester Materials of Construction
Hast-C is pretty corrosion-resistant, but you might look at monel or titanium as alternates. Both are used in applications where they are required to resist corrosion from free halogens.
Plan 2 is to change the type of flame arrestor. If the original unit has a crimped ribbon-type arrestor, those are efficient but the ribbon is very thin and there is not much material to be corroded. An alternate construction is the stacked disc type where a stack of discs with a hole in the middle are assembled with thin spacers between each. THere is a blind disc at the end of the stack. The discs tend to be more robust (1/16" inch thick) so there would be more material to withstand corrosion.
RE: Flame Arrester Materials of Construction
RE: Flame Arrester Materials of Construction
RE: Flame Arrester Materials of Construction
-Do you have valves in this line? What is the body and trim material?
-Do you also have corrosion problem in other portions in this line?
RE: Flame Arrester Materials of Construction
RE: Flame Arrester Materials of Construction
RE: Flame Arrester Materials of Construction
Check out Tornado Technologies as an arrestor vendor as they use aluminum ceramic beads for flame cell material, which are resitant to oxidation and corrosion. You will need to contact them the about the use of Hastelloy C or other alloys for construction of the body and flame cell housing.
Also check out plasma coati as there are companies out there who do some great work in coating CS with exotic alloys. This may be a more cost effective way to go.
Krossview
RE: Flame Arrester Materials of Construction
So, to answer your question, yes there is something out there that is non metallic that you can use.
good luck!!
RE: Flame Arrester Materials of Construction
erdie