Raw material handling in Alternative Fuels projects
Manfred Bruckner
Chief Sales Officer & Managing Director - Qlar Group | Circular Economy ?? and Digitization in Chemicals Performance Materials Metals Infrastructure and Energy | Sales Coach and Motivator |
Alternative fuels or Refuse Derived Fuels (RDF) are the end product of material processing plants. Commercial and municipal waste passes through a multi-stage comminution and preparation process here. The final grain size of the RDF (Figure 1) is determined by the shredder in the final processing stage. A perforated plate located under the cutter rotor acts as a grading screen. Depending on the type of shredder, its degree of comminution and the properties of the original material, each size-reduction process leaves behind a certain proportion of oversized particles. If the shredder has an integrated grading screen with a hole size of 30 mm for example, the average grain size will vary from 1 to 30 mm. The permissible oversized particles from around 1 to 3 mass % can however be as large as 50mm.
To handle all that types of Alternative fuels a closed belt elevator is a robust and accurate option.
MoveMaster BEx Belt Elevator
- Closed belt elevator for solids handling up to 390 cbm/hr
- Dust tight modular construction with self-cleaning function
- ATEX compliant design
Application: The MoveMaster BEx is used for transport of bulky solid primary and secondary fuels. The processed material includes all kinds of alternative fuels and their mixtures.
Equipment: The MoveMaster BEx (MMBEx) is a belt conveyor with a unique conveyor belt design. Its cleat profile and side corrugated walls, which together form individual pockets for material transport. The conveyor trajectory is completely covered. This prevents environmental pollution and at the same time protects the material against environmental influences. The conveyor is equipped with a self-cleaning system.
Functions: The material is filled into the pockets of the conveyor belt. By moving the belt is the material conveyed to the discharge place. The spilled material is returned back to the upper transport branch by cleaning chain conveyor, where the overcarry is approx. 1-2% of feed rate.
Design:
Design variants:
