Hello,
I'm on an internship with a power station and
I've been tasked with identifying a way to reduce back pressure to an FTIR currently sampling stack gas from a biomass burning power station.
It is believed that back pressure is causing and inaccurately high reading of CO due to increased density of the sample gas in the cell of the FTIR (its designed to be measuring at atmospheric pressure). Therefore by reducing the back pressure a more accurate reading for CO should be achieved.
The outlet from the FTIR is the inlet to a FID, the outlet of which is released to the atmosphere through a 7mm plastic pipe that drops approximately 1.4m from the FID outlet to the point where gasses are released.
Is there an adjustment i could make to the outlet pipe of the FID to reduce the aforementioned effect and increase gas analysis accuracy? I thought altering the position of the outlet end of this pipe may help but the difference would probably be very marginal wouldn't it?
I'd rather avoid the need for additional materials and just alter whats installed already if possible.
Thanks a lot!
J