Brochure
Amine Pump Recycle Control Valve
Maintaining the proper ow of lean amine within the
acid gas removal unit is necessary to ensure sufcient
removal of CO
2
and H
2
S from the feed gas stream. The lean
amine pump ensures the stable ow of lean amine to the
contactor.
The amine pump recycle valve is most commonly used
to facilitate startup and commissioning as the acid gas
removal unit is brought up to capacity. This valve controls
the pump discharge ow that is routed back around to the
suction side of the pump. When needed, the recycle ow
boosts the suction pressure to keep it above the vapor
pressure of the amine. As a result, the amine pump recycle
valve must be very responsive in order to protect the pump
from cavitation damage.
Due to the high pressure differential from discharge back
to suction, the valve trim must be capable of mitigating
the potentially damaging effects of cavitation as it recycles
ow. Any unplanned maintenance on these valves due to
cavitation damage can bring the amine pumps down and
reduce plant throughput.
To learn more about how Fisher anti-
cavitation technologies can help prevent
damage to your valves, view an animation
video at www.FisherSevereService.com
Scan this code to discover the broad
range of Fisher anti-cavitation technology
solutions for both clean and dirty service
applications.
12 | Fisher
®
LNG Liquefaction Solutions