Untitled

108
Chemical
loop
AB
FCV
FE
Steam
Chemical
CIP
recirc
tank
loop block
PS
COND
HXR
RTD T LS
COND
Restrictor
CIP
supply pump
(VFD)
SG
HBV
Close
coupled
Rinse to drain
Samp
RTD
Samp
Ret
probe
CIP return
Single-Use Eductor-Assisted CIP Skid
Any single-use CIP skid intended to function with minimal water requires areliable
CIPR system. The single-use eductor-assisted (SUEA) CIP unit shown schematically in
Figure 12 fulfills this need as the ultimate, and highly preferred, solution to meeting
criteria for minimum circuit volume, minimum vessel puddle, reliable recirculation,
and rapid evacuation of all solutions from the circuit between CIP
program steps.
This proprietary design uses an eductor as apumping device, by injecting
water through an orifice into an enclosed chamber,tocreate avacuum of 16 to 18 in.
under normal operating conditions, and approximately 12 in. at 808 C. The vacuum
may be used to assist gravity return, or continuously prime return pumps which
normally handle a50/50% air/water mixture. The air separation/recirculation
tank used with the eductor-assisted return system makes it possible to achieve
recirculation of cleaning and sanitizing solutions at flow rates ranging from 50 to
120 gal/min (190–450 L/m) with as little as 12 to 15 gal (45–57 L) of solution in
the air separation/recirculation tank. The vessel being spray cleaned, if fitted with a
flat plate vortex breaker, will contain only aminimal puddle, if any. Anair blow at
RTD
CIPR
recycle
LP
Res
probe
0.2 Micron
filter
HWFI
tank
CIP supply
HWFI
Seiberling
Rupure
disc
FIGURE 10 The heavy lines on this diagram depict the rinse to drain flow through atwo-tank cleanin-place
skid with the CIP recycle tank on the return end of the circuit.