WASTE TO ENERGY
Loading and discharge conveyors. Controllable distribution and discharge conveyors suspended from steel wire ropes enable the two boxes to be filled and discharged evenly
In the Snetterton plant, pendulum rod dischargers are used to be able to
tip the already shredded material safely.
flow uniformly and controllably onto the removal station. Lumpy material is diverted by the oscillating bars, and dust development is reduced by the low drop height. At three other locations, the material is loaded via push rod dischargers. From here, the biomass goes either directly to a vibratory conveyor, which serves as a discharge conveyor, or directly to a conveyor belt. Dosing conveyors are used at the fifth plant. As intermediate bunkers, these are capable of depositing different materials in exact quantities onto the conveyor system. To remove foreign materials, the lines in all plants are equipped with magnets and non-ferrous separators. Te mass passes to star or disc screens via drag chain conveyors. In Snetterton, for example, samples are also taken automatically to ensure that the quality is right. Here – unlike in the other BMCHPs – the material is buffered in boxes. Tese are equipped with loading and discharge conveyors. A controllable distribution and discharge conveyor suspended on steel wire ropes fills and empties the containers evenly. Te two adjacent storage boxes can be handled by means of a chassis. Worm conveyors and drag chain conveyors
transport the biomass onward to the boiler. “We have also implemented dryer charging in one of the plants,” says Rosenkranz. Te material is received via a push rod discharger and the dryer is fed via worm conveyors and drag chain conveyors. A drag chain conveyor is also responsible for discharging the dryer.
A SINGLE SOURCE AND A SINGLE POINT OF CONTACT When it came to equipping the new biomass combined heat and power plant, Burmeister & Wain placed its entire trust in Vecoplan. Design, planning and implementation were carried out almost simultaneously from a single source. Tere was therefore only one point of contact responsible for all projects. Meetings could be combined, installation and commissioning staff were able to service several sites, and spare parts and consumables are suitable for all Vecoplan systems. “We have developed an efficient and tailor-made solution for each site,” explains Rosenkranz. “We were also able to comply with the strict quality standards that are typical of the country as well as meeting the high demands on project management and documentation.”
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