Pipe Conveyor for Alternative Fuels

Pipe Conveyor Transport

Pipe Conveyor for Alternative Fuels

Operational Gains with minimal Disruption and without any Material Loss
At its cement plant in Bernburg Germany Schwenk Zement KG installed an elevated pipe conveyor system to transport alternative fuels to the feeding system of the main burner. A pipe conveyor was selected because of its high reliability and zero product loss.
(ed. WoMaMarcel - 01/12/2014)
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High Level of Environmental Protection, Low Level of Maintenance

“Together with the management team in Bernburg, we developed a solution that is tailored exactly to match Schwenk’s requirements”, says Michal Mikulec, managing director at Beumer Group Czech Republic a.s. and supervisor for this project.

“Our first idea was to combine a new drag chain conveyor with several open belt conveyors, but it was quickly abandoned. It became apparent that a pipe conveyor was the best solution offering environmental protection and low maintenance. Its closed design protects the environment from transported goods falling down. Another advantage is the lack of dust development on the running line”, explains Michal Mikulec.

These conveyors offer many other advantages. They are able to navigate long distances and tight curve radii. Due to their ability to negotiate curves, considerably less transfer towers are required compared to other belt conveyors. This results in substantial cost savings for the customer and delivery of a system customised for individual routing. Beumer Group supplied and installed a system with a diameter of 200 mm and a length of 230 m. It conveys up to 15 t of material per hour. Beumer was also responsible for the design of the system and the entire steel structure.

Durable conveyor belts guaranteeing tensile strength are used in the Schwenk solution. “To find the ideal belt version for Schwenk, we calculated the tractive forces as well as the forces that occur during acceleration and deceleration – always considering the net weight of the belt and the transported item”, reports Michal Mikulec. The engineers also precalculated the belt positions in different curve radii for the empty and loaded belt. Another system advantage is the reduced noise emission of the pipe conveyors. “Special idlers as well as low-noise bearings and electric motors work very quietly. This improves the quality of our employees’ day-to-day work environment and ensures the people living near the plant are not disturbed”, says Dirk Fabian.

Trouble-free Operation

Cranes pick up the treated substitute fuels in the storehouse and unload them into the discharge bunker with the discharge system. From here, the chain belt conveyor continually transports the material to the new pipe conveyor that then transports it to the weigh feeders of the main burner. Beumer was able to optimally customise the routing of the conveyor to the plant.

Another requirement met by the experts: no supports underneath the pipe conveyor that would otherwise obstruct vehicles. This is why the technicians mounted the first support directly to the storehouse. The conveyor take-up system was designed by Beumer as a take-up tower. It is located right next to the feeding station.

It took only eight months from the time the contract was awarded until commissioning of the new system in February 2014. “We have been working with the Beumer system for several months now”, says Dirk Fabian. “We are very satisfied. It is very robust and we no longer have any failures.”

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