Best solution for BIOGAS application
Best solution for BIOGAS application
(OP)
Hello,
Can you tell me the best solution for the following application?
Fluid: BIOGAS
Temp: 20ºC
Pressure: 0,5 Bar
RPM: 2950
Shaft: 35mm
May be back to back double seal with a barrier fluid to lubricate the faces? Wich would be the appropiate barrier fluid considering we are talking about biogas?
Can you tell me the best solution for the following application?
Fluid: BIOGAS
Temp: 20ºC
Pressure: 0,5 Bar
RPM: 2950
Shaft: 35mm
May be back to back double seal with a barrier fluid to lubricate the faces? Wich would be the appropiate barrier fluid considering we are talking about biogas?





RE: Best solution for BIOGAS application
Cheers
RE: Best solution for BIOGAS application
Is it a problem that the N2 contaminate the gas if a seal leakage is produced?
Why not to use a liquid as a barrier fluid?
RE: Best solution for BIOGAS application
The advantages of this system is that you normally do not have to worry about the possible adverse effects of a fluid barrier leakage into the process.
If you want to use a dual pressurised seal with a liquid barrier then you need to decide upon the appropriate barrier fluid following the same principles as for any other application - i.e. the barrier fluid should be compatible with the process and with seal materials, it should have good lubricant properties, good specific heat properties, be cheap, easily available, non-hazardous in itself etc. etc. etc. See API 682 Section 8.5.5, for information on barrier fluid selection.
Alternatively, you could use a dry gas seal in either single or tandem configuration.