SD-Basic Laboratory Scale Spray Dryer

A simple and effective laboratory scale spray dryer for product researchand development.

The SD-Basic spray dryer is designed to enable initial product trials andevaluation to be carried out quickly and efficiently.

The unit is supplied with a complete glassware set comprising main dryingchamber, cyclone, sample collection and waste collection bottles, clamps,seals and all necessary tubing.

Design & production by

Lab-Plant Limited

Sales and Service in Germany: Powtec Maschinen und Engineering GmbHTel: +49 (0)2191 389194 • Fax: +49(0)2191 389196 • E-Mail: info@powtec.de

www.powtec.de • www.labplant.com • www.scaleupchemistry.com

TWO FLUID NOZZLE

The stainless steel spray assemblyconsists of an inner tube for the liquidsample leading to a small diameter jet.An outer tube directs the supply ofcompressed air to the nozzle and theclose tolerance gap between the nozzleand the jet ensures a fine vaporisedspray. The SD-Basic is supplied as standard with 0.5 mm jet and other

sizes are available as accessories.

The spray assembly incorporates amanual de-blocking device thatprevents the jet nozzle from becomingblocked. De-blocking is sometimesnecessary with materials which maysolidify or when large particles insuspension cause blockages in the jet.

CONTROLS AND FUNCTIONALITY

The unit is designed to ensure that allfunctions are simple to select andadjust, to quickly achieve the optimumconditions for Spray Drying. A simple

digital controller allows selection of theinlet temperature and a rotary knobcontrols the pump speed. A digitaldisplay of the outlet temperature is alsoincluded.

CONSTRUCTION

The chemically resistant paintedhousing includes the blower, heater andthe controls for inlet temperature andpump speed. The drying air volume isfixed at 70m3/hr.

The unit requires but is not suppliedwith an external compressor*

All clamps and fittings are designed toallow assembly and removal of the

APPLICATIONS

Spray drying can be used in a widerange of applications where theproduction of a free-flowing powdersample is required. This technique hassuccessfully processed materials in thefollowing areas:

Food and Drink - Flavours andColourings - Milk and Egg ProductsPharmaceuticals - Polymers and Resins - Perfumes - Ceramics andAdvanced Materials - Soaps andDetergents - Dyestuffs - Adhesives andmany others.

TECHNIQUE

A self-priming peristaltic pump deliversthe liquid sample from a containerthrough a small diameter jet into themain chamber. At the same timecompressed air* enters the outer tubeof the jet which causes the liquid toemerge as a fine atomised spray intothe drying chamber.

Heated air is blown through the main

chamber evaporating the liquid contentof the atomised spray. The solidparticles of the material, which arenormally in a free flowing state, are then separated from the exhaust airflow by a cyclone and collected in thesample collection bottle. The exhaust airflow is directed through a flexible 50mm diameter hose direct to atmosphereor to an existing extraction system.

glass components in only a matterof seconds and the rear of thecabinet includes an inlet filterensuring that the drying air doesnot include contaminants.

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SD-BASIC SPECIFICATION

Dimensions

Weight

Heater

Operator Settings

Power Requirements

*minimum compressed air requirements: 50 l/min @ 8 bar

1100 mm x 500 mm x 500 mm (HWD) including jet assembly

Approx. 60 kg

3000 watts

Air Inlet Temperature :Max. 200

oC Feed Pump

Volume : 0 to 1500 ml/hr Air Flow Fixed at approx. 70m3/hr

220/240v 50/60 Hz 1ph

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44(0)1484 427383