Fractionator Pump Around Control

Some fractionators may use only one pump-around system, but others may incorporate several to control heat balance. Each is used as a type of reflux to improve the separation of the product draws above and below the pump around loop.

Poor performance of this loop results in variations of the product quality, thus reliability and performance are key considerations. Control valve selection will vary depending upon the point of withdrawal from the column. Spartan’s experts will assist in the selection of a rotary valve, Fisher 461, globe, or angle valve for your specific application. Additionally, accurate measurement of flow can be achieved through the utilization of the Rosemount DP transmitter. 

Vee-Ball™ V300 is a flanged valve for throttling or on-off operation for many different applications in the process industries. The V300 is available in NPS 1 through 16, CL300 (DN 25 through 100, PN 15/40). Trim components are interchangeable between Design V150, V200 and V300.
The Fisher 461 Sweep-Flo valve, is a self-cleaning, increased outlet, angle valve that features a venturi-type throat, which is useful where high pressure drops, slurries or flashing might exist. It is typically used in the hydrocarbon, power and chemical industries.
Fisher
Fisher EZ valves (figure 1) are used for throttling or on-off control of a wide variety of liquids and gases. The single-port, globe-style body design offers quick-change trim and a post-guided, unbalanced valve plug. The EZ valve is used in chemical or hydrocarbon processing applications or wherever control of non-lubricating, viscous, or other hard-to-handle fluids is required.
The FIELDVUE DVC6200 is a digital valve controller capable of operating using 4-20 mA, HART, Fieldbus, or Profibus communication protocols. The basis of its operation is the conversion of a control signal into a pneumatic output controlling valve position.