Single Effect Still

Main Features

Extremely suitable and economical to produce WFI according Ph. Eur. and USP in cases OF WFI consumption less than 200 m3 a year
Degasification up-stream of the system
Integrated FDA/USP compliant pure steam generator
Full factory acceptability testing (FAT) documentation

Column is pressurised during stand-by. The degasifying effect in front of the still allows operation of the condenser at temperatures of > 110 °C providing filling of the storage vessels to higher levels.
Draining condenser: Fully automatic draining of condenser during shutdown (FDA requirement).
Droplet separation by centricyclone separator and by gravity: 4-5 Log pyrogen reduction verified by FAT Challengetest.
Sanitary system design: Includes draining of degasifire, column and pump.
Pre-pressure rising station and degasifying column: Effective elimination of non condensable gas to guarantee the conductivity according to USP standards.
Level control of effect: Flooding of effects (malfunction) will be detected according to USP supplement.

Pure steam generator: The column can also be used as a pure steam generator, which is able to produce pure steam 24 hours a day, independent from WFI production. Independent from the WFI production rate the first column can be oversized if additional capacity of pure steam is needed.
Extension of capacity: For higher production rates additional effects can be installed. Energy and cooling water costs are reduced.
Thermosyphon- principle: The construction of the thermosyphon generator with its effective natural circulation has thermodynamic advantages.
Headroom: Compared to standard thin film evaporator heatexchangers, the Letzner style head-ROOM has been reduced.
Double tubesheet heatexchangers: The tubes are welded in the head-plates, thereby lowering the risk of corrosion.
Sanitary design: Includes double tube-sheet heatexchangers, diaphragm valves, sensor with sanitary connections and orbital welds. All surfaces in contact with product are 316L, stainless steel and have sanitary connections and seals.
Custom designed: The dimensions can be adapted to the installation room.
Energy utilization: Preheating of feed-water by blow down heatexchanger, condensator and heat exchanger between the effects.
Stainless steel controlbox and frame
Option: electropolished