Carbon Seal Failure
Carbon Seal Failure
(OP)
Hi.
We have a GE blower with the following specs:
dp = 0.5 Bar
Capacity = 7060 m^3/hr
Impeller material is SS403
Speed = 5800 rpm
Suction Temp = 138 C
Discharge Temp = 208 C
Brake Horsepower = 234 HP
Gas is Chlorine
But, the process is higher than the equipment specs where capacity is actually can go up to 8700 m^3/hr and suction temperature can go up to 200 C.
Now, the main problem we are facing as maintenance department is the failure of carbon seal rings.
We use 2 carbon rings (3-segmented design) and we almost replace the rings once every 2 month.
Any ideas regarding the failure and how we can prevent it.
Best Regards,
We have a GE blower with the following specs:
dp = 0.5 Bar
Capacity = 7060 m^3/hr
Impeller material is SS403
Speed = 5800 rpm
Suction Temp = 138 C
Discharge Temp = 208 C
Brake Horsepower = 234 HP
Gas is Chlorine
But, the process is higher than the equipment specs where capacity is actually can go up to 8700 m^3/hr and suction temperature can go up to 200 C.
Now, the main problem we are facing as maintenance department is the failure of carbon seal rings.
We use 2 carbon rings (3-segmented design) and we almost replace the rings once every 2 month.
Any ideas regarding the failure and how we can prevent it.
Best Regards,





RE: Carbon Seal Failure
RE: Carbon Seal Failure
RE: Carbon Seal Failure
We have a Chlorinator blower in our CCR unit that may be similar in some ways. It also uses a segmented carbon ring seal with a Nitrogen purge between the rings. We have had very good reliability from the seal. Chlorine is an unusual product for us. It has material compatibility problems with many common materials. We had to replace all the mounting studs on our blower because they had used Stainless Steel and they cracked. I am not familiar with the metallurgy you indicated for your fan. But, the first thing I would do is verify the compatibility of the carbon grade and garter spring material with hot Chlorine gas. And, as noted above, more details would be helpful.
Johnny Pellin
RE: Carbon Seal Failure
One told me that using 5-pieces rings might solve the problem, although it is about 4 times the price of the 3-pieces we are currently using. So, what do you think ?
P.S. as JJPellin plant, we use also N2 purging.
RE: Carbon Seal Failure
Is this speed comparable to other fans in your facility?
RE: Carbon Seal Failure