Treatment of refuse-derived fuels
The new SpeedCut Granulator of type NGV for the treatment of refuse-derived fuels and waste material
BHS-Sonthofen will present the new “SpeedCut Granulators” of type NGV for shredding refuse-derived fuels and other high-caloric material at IFAT 2016. These machines process feed material so that it can be burnt efficiently in power stations and cement plants. With high throughput rates of more than 20 t/h, they are among the most powerful granulators available on the market.
The takeover of AMNI in 2013 expanded the BHS product portfolio to include cutting machines. BHS has made use of the designers” many years of experience with machines for the treatment of refuse-derived fuels in the development of the new “SpeedCut Granulators” of type NGV.
The granulator cuts the feed material to a size of less than 30 mm, making it ideally suited to efficient burning. The machines process waste mixtures with high calorific values, for example, residential refuse or commercial waste similar to domestic refuse (RDF – refuse-derived fuel). When fed materials with bulk densities of 0.08 to 0.15 t/m³, which are typical for refuse-derived fuels, the “SpeedCut Granulator” processes up to 20 t/h.
When designing the new granulator, the engineers not only paid close attention to good cutting results and high throughput, but also ensured to build a machine that is incredibly durable throughout. They only use solid materials, and the individual elements surrounding the rotor consist of steel-welded structures. The new machine is one of the few granulators in the market place to have a solid rotor shaft.
The feed material is loaded into the inlet hopper with wheel loaders or via conveyor belts. It is designed so that no bridges form, even with large feed volumes. As the material is fed from above, the feed material moves to the rotor through the force of gravity.
A hydraulically operated slide additionally presses the material into the gap between the rotor shaft equipped with blades and the stationary stator blades, where it is cut. The rotor has an exceptionally large diameter for a granulator. It is extremely sturdy and has a high inertia mass. Its surface also provides space for a large number of blades – an essential requirement for a high number of individual cuts per revolution and hence high throughput.
The stator blades consist of several segments. They can be individually calibrated and replaced, allowing the gap width to be optimally maintained over the length of the rotor. This ensures that the machine attains consistently good cutting results. Thanks to the large diameter of the rotor, the SpeedCut Granulator (NGV) achieves a very high cutting performance of up to 170 m per second.
The granulated material falls into a screen basket. Large parts are conveyed back from the rotor to the cutting gap. Once they are size reduced enough so that they fit through the holes in the screen, they exit from the bottom of the machine. The basket can be swivelled hydraulically out of the machine.
Alfred Weber, Sales Director Recycling Technology at BHS-Sonthofen, regards the SpeedCut Granulator as an important addition to the portfolio of cutting machines: “As regards the type of material processed with this machine, a high number of cuts per second is important so that the desired granulation of the discharge material is achieved. That is why the machine was named SpeedCut Granulator.”
As the new granulator is designed for particularly demanding environments, BHS supplies it with two drives. It is available in two different type sizes:
-Type NGV 1020 with a connected load of up to 2 x 200 kW for a throughput of up to 15 t/h and more
-Type NGV 1028 with up to 2 x 250 kW for an output up to 20 t/h and more
This data refers to a screen with a 30-mm hole diameter. The performance increases significantly at larger diameters.
Highly reliable operation
The engineers at BHS have completely redesigned the machine. The primary focus was on smooth operation. Slip clutches at both drives and a system control with intelligent analysis of system parameters ensure a high level of process reliability.
Numerous details make the operation and maintenance easy. For instance, all blades can be replaced in just a few steps. The screen basket consists of several segments that can be replaced individually. The hydraulically opening maintenance door ensures good accessibility to the inside of the machine. A platform provides the maintenance crew with a safer working environment.
Dennis Kemmann, Managing Director of BHS-Sonthofen GmbH, sees huge benefits for his customers: “The SpeedCut Granulator makes for a highly safe investment: The person who developed the machine, Mr. Udo Becker, has more than 20 year”s experience in the construction of granulators. He knows what to pay attention to so that the machines work economically over a long period of time, both with regard to operating and investment costs. High-quality materials, solid components and tough steel-welded structures make the machine extremely robust. Assembly at our plant in Sonthofen delivers yet another benefit: quality made in Germany.”
With low wear and less need for maintenance along with qualified service and rapid delivery of replacement parts, BHS ensures high availability and minimum machine downtimes.
Recycling machines from BHS-Sonthofen:
Two new shredders round off the cutting machine product portfolio:
-BHS-Sonthofen will use the occasion of the IFAT to unveil the new Universal Shredder of type NGU for pre- and post-shredding of small to medium volumes.
-BHS-Sonthofen also continues to manufacture the proven HeavyCut Granulator of type NGH with swiveling stator for heavy feed material such as tires, electrical and electronics scrap or aluminum composites.
BHS-Sonthofen at IFAT 2016
(Munich, May 30 to June 3, 2016):
Hall B2, Stand 351/450
BHS-Sonthofen GmbH is an owner-operated group of companies in the field of mechanical and plant engineering, based in Sonthofen (Germany). The company offers technical solutions for mechanical process engineering, concentrating primarily on mixing, crushing, recycling and filtration. With more than 350 employees and several subsidiaries, BHS-Sonthofen has a global presence.
The Recycling Technology division offers a broad range of machines and plants for the recycling industry. The product portfolio comprises of recycling machines for the treatment as well as the pre- and post-shredding for a diverse range of recyclable and waste materials using crushing and cutting technology. This includes scrap, shredder residual fractions, slag, incineration bottom ash as well as tires, cables, refuse-derived fuels or domestic, commercial and industrial waste. BHS also plans, engineers and implements complete, turn-key recycling plants for its customers.
For further information, please visit: www.bhs-sonthofen.de
An der Eisenschmelze 47
D-87527 Sonthofen, Germany
+49 8321 6099-231
52068 Aachen, Germany