ER N ITIO D N O C STARCH CONDITIONING

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1 CONDITIONER STARCH CONDITIONING

2 STARCH CONDITIONING STARCH CONDITIONING The NID starch conditioning system uniquely combines a fluidising bed Vortex Dryer for starch moisture removal, and a Screw Conveyor Cooler for starch cooling. This combination offers unsurpassed performance and efficiency to meet all of your starch conditioning needs. Unsurpassed performance and efficiency to meet all of your starch conditioning needs VORTEX DRYER The NID fluidising bed Vortex Dryer has been used successfully for many years to dry and aerate moulding starch and is generally recognised in the industry as the most efficient form of drying and aeration. The drying cabinet has large heating air intakes on each side, giving a large airflow at a low velocity which efficiently transfers heat and evenly distributes air over the full width of the fluidising beds. Both intakes are fitted with steam heated heat exchangers for high performance and efficient heat transfer. Components The Vortex Dryer is offered with either one or two fluidising beds each of 4.5 metres long x 1 metre wide depending on the required capacity. An overhead mounted Dust Collector reclaims airborne starch, using automatic sequential reverse air-jets, returning it directly into the starch system. Steam valves, regulators and sensors are included. 1 THE STARCH MOULDING SPECIALIST

3 FEATURES Fluidised bed air-induced turbulence with large volume airflow Two steam heated heat exchangers with large air intakes Adjustable speed rotary inlet valve, starch metering, and slat conveying Integrated Dust Collector with suction fan is mounted on top of the Vortex frame returning starch directly to the Vortex Dryer Dust Collectors with fully automatic reverse air-jets continuously and sequentially control filter membrane cleaning Starch recovery conveyor in the base of the Vortex Dryer cabinet returns starch collected below the fluidising bed to the Vortex Dryer starch flow Individually designed continuous spiral starch conveyor systems Heat exchanger temperatures are controlled by an automatic steammodulating valve and heat sensor. The starch temperature is indicated by a dial thermometer mounted on the dryer cabinet Dust Collector suction fan produces an airflow of 255 m 3 /min (9000 CFM) and is fitted with a silencer Dust Collector has 80 m 2 of filter area with sequential reverse air-jet automatic cleaning and pressure-relief membrane panels Floor mounted electrical control panel which includes all control and switchgear to conveniently control all dryer parameters such as starch flow rate, temperature and fan airflow rate. BENEFITS # Uniform and consistent drying # Shorter drying times # Compact design # Low maintenance # Select drying or cooling only # Energy cost effective # Simple and robust construction with easy to clean surfaces # Each slat conveyor and rotor is equipped with its own geared motor for precise control and the elimination of high maintenance chains # Intense, efficient aeration conditioning of starch and other suitable granular products # An unrestricted large volume, slow moving airflow for maximum intake heat-exchange efficiency # Greater control of retention time and starch layer for most effective drying and cooling # Avoidance of high temperature contact areas # Throughput of starch up to 20,000 kg /hr with moisture reduction from 3-4% based on incoming starch moisture of 10-12% # Suits any factory layout. 2 THE STARCH MOULDING SPECIALIST

4 INTEGRATION, VARIATIONS AND EXECUTIONS The Vortex Dryer and Screw Conveyor Cooler as a combination or individually are offered in a range of sizes and capacities that can condition up to 20,000 kg of starch per hour and service: # Moguls using trays 820 mm long # Maxi Moguls using the mm long range of trays. Variations Can Include: # Retrofitting to any existing Mogul either as a combination The supply of a complete NID spiral starch or individually conveying system designed to suit dryer and # Fully integrated interconnecting cooler sizing and the overall plant layout is screw conveyors to transport recommended. starch from the dryer to the cooler NID provide assistance to select the most # Alternative dryer and cooler effective spiral starch conveying system configurations if in-line length layout for new and existing plant layouts. is restricted. THE STARCH MOULDING SPECIALIST 3 M imise produc v y Minimise down me Optimise profitability

5 Maximise Productivity Minimise Downtime Optimise Profitability SCREW CONVEYOR COOLER The screw heat exchanger type cooler is designed to efficiently reduce the temperature of the starch after it leaves the Vortex Dryer to a temperature suitable for depositing. Components Two large diameter hollow screw conveyors are mounted side-by-side in a stainless steel jacketed trough. The screws and the cavity in the jacketed trough are cooled by chilled water / glycol, and as the starch travels the length of both screws, heat energy dissipates to the cold screw and trough surfaces. SCREW CONVEYOR COOLER Features # Compact design # Simple and robust construction # Stainless steel cooling trough # Complete with water / glycol connections and valves # Complete VSD control included in control panel # Only two 5.5 kw motors required # Drive motor speed controlled by VSD # Quick and easy installation # High efficiency heat transfer between starch and cooling contact surfaces # Top of cooler only 1.8 m from floor. Benefits # High capacity throughput up to 20,000 kg/hr with a temperature reduction from 55 C down to 30 C # Uniform and consistent cooling # Low maintenance # Easy visual and physical access # Ideal for situations with low ceiling or height restrictions # High efficiency use of energy # Energy cost effective # Few moving parts. 4 THE STARCH MOULDING SPECIALIST

6 SPECIFICATIONS Figures are typical for 10,000 kg/hr throughput and may vary up or down for other throughputs. VORTEX DRYER Shipping specification Electrical requirements Steam Compressed air Operational weight Normally supplied in one 40 ft open top sea container 26 kw (35 hp) for Dryer (approx. 12 kw (16 hp) for ten screw conveyors depending on layout) At 9 bar (130 psi) consumption approx kg/hr (2645 lb/hr) At 6 bar (87 psi) consumption approx m 3 /min (23 CFM) 7700 kg (16,975 lb) SCREW CONVEYOR COOLER Shipping specification Water / glycol Electrical requirements Operational weight Normally supplied in one 40 ft open top sea container 15 m 3 /hour (3963 US gal/hr) at minus 2 C (28 F) supplied at 5 bar max (72 psi max) 11 kw 8938 kg (19,705 lb) 1. Dryer & Cooler Elevation View 2. Dryer & Cooler Plan View 3. Alternate Plan View 4. Alternate Plan View NID Pty. Ltd. Sydney, Australia Stokes Avenue, Alexandria, NSW Australia Tel : Fax : info@nid.com.au Website :