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Uzwil, Switzerland -- Buhler offers customers mechanical or pneumatic ship unloading solutions suiting their particular requirements and the size of ships they must unload. The further developed Portanova is capable of unloading even Panamax-size vessels up to 65,000 DWT.
Maritime traffic is an ancient tradition in Europe as elsewhere. In the North Sea and the Baltic Sea, trade was controlled in the 14th and 15th centuries mainly by the German Hanseatic League. On the other side of Europe, the Venetians and Genoese controlled trade in the Mediterranean. In those times as today, every bustling port was equipped with gear for loading and unloading ships. Today, the mechanical or pneumatic state-of-the-art ship unloaders and loaders used for this purpose are designed to fulfill a wide variety of tasks.
Fast and reliable unloading
The Portanova is Buhler’s latest unloader. It is pneumatically operated, using air to draw the bulk material from the ship’s hold. A total separator or receiver separates the air from the material, which is transferred by chain or belt conveyors to storage terminals or loaded directly onto trucks. The centralized hydraulic system supplies the energy needed to lift and lower the boom, to swivel the tower, and to power the traveling gear and its steering system. The control system is provided with a display showing the current operating conditions, fault messages, and the maintenance routine. This data can be printed out as required. The Portanova allows up to 345 metric tons of dry bulk solids such as grain and oilseeds to be handled per hour. These materials are then processed in grain mills, feed manufacturing facilities, oil mills, and breweries. The Portanova can be used for numerous different applications, being available as a self-propelled or stationary model powered by a diesel or electric drive.
When mechanical, when pneumatic?
Large ships are predominantly unloaded by mechanical units because their energy requirement is signifi cantly lower. The mechanical Portalink ship unloader from Buhler is especially suitable for discharging grain, derivatives, and fertilizers at unloading rates ranging from 400 to 1200 metric tons per hour. Though the pneumatic Portanova requires more energy for its operation, it offers benefits in terms of flexibility: Its special telescopic conveying pipe allows it to reach the material in a ship’s hold even through the smallest of hatches – as well as on all the different intermediate decks – and to aspirate it without residue. It can also be applied with advantage for small vessels such as barges and coasters. To handle higher throughputs, Buhler has designed the pneumatic Portalift unloader, which is capable of moving up to 600 tons per hour. All Buhler ship unloaders are equipped with railmounted or rubber-tired bogies.
The cost-to-benefit ratio decides
A low capital cost at low throughput rates and universal application for cleanup are the big advantages of the pneumatic Portanova ship unloader. On the other hand, though mechanical ship unloaders such as the Portalink offer a higher throughput capacity, they are considerably heavier. This means that the pier must be of a more stable design to support their weight. For flexible, fast, and reliable overall operation, customers will ideally select a pneumatic unloader to complement a mechanical one. This will optimize the materials handling system in terms of speed. But whatever system customers choose from Buhler’s wide range of ship unloaders – mechanical or pneumatic – they will find that Buhler is a highly competent partner for all such installations.
Web site: http://www.buhlergroup.com/
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