8/3/2019 csc_20-06-476

1/5

Mechanical SeparationDivision

Data Sheet

C SC 20-06-476

Complete plant systemswith automatic or manual SIPfor down-stream processingof fermentation broths understerile conditions

Fields of applicationBiotechnology, pharmaceuticaland food industry

Complete plant systems with automatic SIP

8/3/2019 csc_20-06-476

2/5

8/3/2019 csc_20-06-476

3/5

.Photoelectric control using a turbidity measurement 28)to monitor the clarified liquid. If a pre-set turbidity levelis exceeded, a signal is passed to the control unit (25)which then initiates the solids ejection process. Recom-mended for use with translucent liquids in which thesolids content is not constant or if the throughput capaci-ty varies. This monitoring system can be installed onevery standard centrifuge.

Typical product applications

This clarifier incorporates the very latest developments incentrifuge construction.The basic features of this new development are:.Clarifier bowl in sanitary design..Cleaning-in-place -capacity of the clarifier ..Steam-sterilizable (SIP) up to 1.5 bar steam pressure

(127 C)..Double-acting slide-ring packing as interface to the drivechamber..Closed product feed and gentle treatment of shear-sensi-tive micro-organisms due to the hydrohermetic feedsystem..No product contamination due to wear of lip seals andmechanical seals as is the case with hermetically sealedmachines..Low noise pollution due to double-walled coolable hoodand solids collector suitable for connection to a closedsealing system up to 1 bar overpressure..l'Hydrostop" system for controlled partial solids ejec-tions.

The "hydrostop" system tor

BowlThe product enters the bowl via the inlet (1) and is clarifiedin this disc stack (3). Centripetal pump (26) then conveysthe clarified liquid under pressure to outlet (2), where it isdischarged without foam.The separated solids collect in sediment holding space andare ejected periodically via ports (6).Operating water is used only during the actual process ofejection.

Total solids ejection sequenceFor total solids ejection, the closing chamber (21) is emptiedvia the annular valve (7) and the nozzle (8) by the additionof operating-water via valve (16). The sliding piston (20)remains open until the whole bowl contents have beenejected. The sliding piston (20) is then closed by supplyingclosing water via valve (17).

Automatic solids ejection

Control systemsFeed and dischargeThe produc t is fed into the centrifuge by means of a closedsystem of pipes. The clarified liquid is discharged foam-freeand under pressure via a centripetal pump.

.Starter cultures for the food and pharmaceutical sectors(e.g. lactic acid bacteria)..Recovery of biomass for pharmaceutical products (e.g.E-Coli)..Treatment of genetica1ly engineered micro-organismsand vaccines, made possible by the closed machine andinsta1lation concept (biocontainment)..Gentle discharge of biomass with product-damagingce1l constituents.

controlled partial solids ejectionsWhen product is processed, only partial solids ejections areperformed.The solids ejections is initiated by the control unit.In the case of partial solids ejection, the hydraulically oper-ated sliding piston (20) must be opened within as short atime as possible so as to ensure that the ejection ports areopend wide enough to allow unimpeded solids ejection.The sliding piston (20) is in closed position (left side of fig-ure) when the closing chamber (21) is full. The annularvalve (7) is hydraulically opened via valve (17) (right sideog fig.). The operating-water flows from the closing cham-ber (21) into the storage chamber (10). When the storagechamber (10) is full, the flow of liquid from the closingchamber (21) will automatically stop, although the annularpiston (7) is still open ("hydrostop" system). The bowl thenopens and the solids are discharged rapidly through theejection ports (6).The amount of solids ejected depends on the liquid level inthe storage chamber (10) (controlled partial solids ejection).The amount of solids to be ejected can be pre-selected bypartially filling the storage chamber (10) before the solidsejection is initiated. This is done by opening valve (16)which releases water into the storage chamber (10) throughthe nozzle (11).After the ejection process, the closing chamber (21) istopped up via valve (16). The annular valve (7) then closes.The storage chamber empties through discharge nozzle (8).This new "hydrostop" system reduces the actual solids ejec-tion time to less than 1/10 second. In the case of solidswhich are difficult to eject, a longer solids ejection cycle isinitiated after several partial solids ejections, which has theeffect of flushing out remaining solids while the productfeed is still open.

Bowl ejections are controlled automatically by control unit(25)The following operations are possible:.partial ejections.a combination of short and long partial ejections.Displacement of the liquid phase from the bowl before atotal ejection.Flush ejection after every total ejection

The following systems are available for controlling the au-tomatic bowl ejections:.Time-dependent control to suit the particular operation.Recommended for use with products in which the solidscontent remains constant.

8/3/2019 csc_20-06-476

4/5

8/3/2019 csc_20-06-476

5/5

8340 min8 1

4 14 bar

1115001800

IMB5IP55

Technical dataBowl

SpeedTotal bowl volumeVolumen of sediment holding space(with large disc stack)Max. pressure produced by centripetal pumpThree-phase AC motorMotor powerSpeed at 50 HzSpeed at 60 Hz

TypeType of protection

WeightsComplete plant net 1900 kggrass 2500 kg

CapacityRated capacitywith one channel centripetal pump 1400 l/hwith two channel centripetal pump 2800 l/hThe rated capacity indicates the maximum throughput rate of the bowl. The actualoperating capacity is usually lower. It depends on the particular product and on therequired level of clarification.

~

Westfalia Separator AGMechanical SeparationDivisionWestfalia Separator AG. Separation Technology .Werner-Habig-Strae 1 .D-59302 Oelde (F.R. Germany)Tel.: +49 (0) 2522/77-0. Fax: +49 (0) 2522/77-2488. Internet: http://www.westfalia-separator.com

9997-0516-000/0597 Fe Subiect ta madificatian Printed in GermaJ

kWmin-lmin-1

'"' ' ~~~~tn:~C/)~~~.::'"' ~~~~zu~o~ua: ~5~z -LU~=a: ~=0-O~~a:-~O~~"-0.-