Stable and accurate weighing and feeding of bulky solid secondary fuels

Application

The MultiFlex NG/NG+ is used for stable and accurate weighing and feeding of bulky solid secondary fuels. The processed material includes all kinds of alternative fuels:
RDF: Shredded plastics,Textile, Paper, Rubber (tire chips) etc.
Fluff: Tyre, etc
Biomass: Wood (chips, pellets), Straw, Agricultural waste etc.
Sludge and Granulates: WWTP sludge, Coal sludge, Animal meal etc.
or any mixture of above mentioned

Equipment

The MultiFlex NG/NG+ consists of a hopper and a screw trough, where the hopper is used for short time storage of material used for calibration and for absorbing fluctuations of connected conveying line. The weighing is established by three independent weighing circuits, which are fitted with compact highly accurate load cells transmitting the loads directly to weighing electronics. NG+ variant has more advanced weighing mechanics which is suitable for substitution rates over 70% or main burner applications

Functions

The bulk material is extracted by the screw trough out of the hopper and conveyed towards the discharge with a feed rate controlled via variable frequency drive of the screws. The screw trough is fitted with two screws which increase the control range up to 1:34. It has to be considered that supercharging is used to maintain full torque for el. motor frequency range 5- 87Hz.The unique shape of hopper is equipped with agitators ensuring smooth emptying of the hopper and optimal filling of the screw trough where the hopper is designed to minimize need of agitation.