IntensaDrum is a machine for efficient pulping of stock consistencies up to 18% and for gentle and effective separation of fibers and contaminants.

Voith's IntensaDrum drum pulper consists of one pulping section and one screening section. In the pulping zone, special lifting bars lift the pulp suspension from the bottom and almost to the top. From there, the suspension falls back onto the drum shell. This process is very gentle since there is no rotor to crush or cut the contaminants.

In the sorting zone of IntensaDrum, the suspension is lifted in the same way, and water is added via spray pipes to wash out the fibers through the perforated drum shell. In this way, an efficient separation of fibers and contaminants already takes place inside the pulping process, without damaging the contaminants.

The simple and basic principle of IntensaDrum leads to low maintenance and increased runtimes. Due to its high consistency range, IntensaDrum has a low specific energy consumption, and the lack of wear parts gives a constant accept quality.

LC Pulping system for recovered paper containing IP-R, JM, IPU, IM, ISD, ZW3. Only an appropriate sized LC-Pulping system with the required selection of machines results in an optimal pulping technology. This can be selected depending on the type of furnish, production and the contaminant included in the furnish.
 

IntensaPulper facilitates efficient pulping of fibers from virgin pulp, recovered paper or paper machine broke in stock preparation.

The Intensa technology from Voith offers quick and intensive mixing of the suspension in the pulper. The flow-optimized pulper vat, in combination with the eccentrically arranged rotor, generates a perfect turbulence. As a result, quicker mixing of the suspension and accelerated bale intake are achieved. The double-coned bottom of IntensaPulper creates a flow-optimized transition from the pulper bottom to the cylindrical trough wall.

IntensaPulper IP-R is specifically designed for the pulping of recovered paper at a high pulping consistency. The rotor configuration ensures a reliable ragger operation, and the number of ragger breaks can be reduced to once a month. The double-coned bottom combined with the baffle urges the coarse heavy contaminants towards the reject discharge allowing a reliable removal in the Junkomat.

IntensaPulper IP-V enables efficient pulping of virgin fibers, clean recovered paper or broke in batch or continuous mode. A bale breaker divides the bales and thus contributes to an increase in production capacity. A trap for heavy parts ensures the separation of wires.

IntensaPulper from Voith achieves a significant increase in production capacity, while keeping the pulping quality consistently high. Significant energy savings of up to 25% are obtained in comparison to conventional low consistency pulpers, thus high cost savings can be achieved.

Highly contaminated stock flows in the pulping system for recovered paper can only be pumped reliably and largely free of blockages using a special pump. Whether in LC or HC system, IntensaPump pumps the critical contaminants to the next machine very reliably in both systems, BluePulp LC and BluePulp HC. Featuring large nozzle diameters and a free-flow impeller, IntensaPump is designed for plug-free pumping of stock flows with a high proportion of contaminants. The impeller has a long service life thanks to its hard facing. A frequency converter offers the possibility for optimized pump speed and reduced energy consumption for intermittent pumping operation.

The particular orientation of the rotor-screen unit on the top of the asymmetrically shaped tank ensures that no vortices can form inside IntensaMaXX. Development of spinnings is thus successfully counteracted, and even maximum contaminant contents are not a problem. Reject discharge in a downward direction ensures reliable removal of contaminants. IntensaMaXX with rotor type B is available for high levels of contaminants; rotor type S is available for hard-to-pulp raw materials.

IntensaMaXX can be used in continuous low consistency (LC) pulping with recovered paper grades containing contaminants or in high consistency (HC) pulping as a dumping machine after the batch HC pulper.

IntensaScreenDrum is a new development based on many years of rich pulping system experiences. The internal spray pipe with newly developed water nozzles keeps the reject almost fiber free and reduces the water and power consumption at the same time. Using lower water pressure than conventional spray pipes makes a significant improvement for the water pumps.

The hood of the IntensaScreenDrum has been redesigned to minimize water vapor and droplets forming on pipes and handrails, keeping the surrounding area clean and safer for the operators.

The reject is purged by intermittent flushing from IntensaMaXX to the IntesaScreenDrum, where it is washed to recover all useable fibers. The internal 3D water spray ensures that all the plastic reject is washed efficiently. By adjusting the water jet, one can optimize the retention time for reject washing, depending on specific conditions for each raw material, system and customer.

The CompactPulper ensures reliable pulping of broke through improved rotor contact and a higher circulation rate. Thanks to its narrow and compact design, the CompactPulper requires minimal space and is used with couch and press broke and with dry broke at a pulping consistency between 3% and 6%.

An effective agitation with low vat height, together with an intensive rotor contact results in a higher circulation rate providing a more intensive pulping with simultaneous low energy consumption. The CompactPulper is available with one to four pulping units per pulper vat and with a width of up to 12 meters. Each pulping unit provides an electrical power of between 55 and 900 kW.

In conjunction with the IntensaPulper IP-R, the ragger transports the tail, formed from bale wires and other coarse spinning contaminants contained in the recovered paper, from the IntensaPulper. To form a sufficiently stable tail, a sufficient quantity of contaminants, such as typically occur in the OCC raw material need to be continuously fed to the IntensaPulper IP-R.

Bale wires are necessary for the transportation of paper bales but expensive to remove upstream of the pulper, and this is not a functioning solution, because there are still spinning contaminants in the recovered paper that form huge spinnings in the pulper that can only be removed by an orange peel grapple. This is why the ragger is a simple tool for removing the spinning materials from the IntensaPulper IP-R. It ensures that the steel wires are not broken down by the rotor and then cause excessive wear on machines, valves and pumps.

Correctly positioned and in combination with the rotor of the IntensaPulper IP-R, the number of torn off tails can be reduced to a minimum. Strong ribs on the transport wheel prevent slippage.

The ragger produces 1.6 tons of tractive force with a 1.1 kW motor. During breaks in operation the brake integrated into the motor stops the transport wheel from twisting. Forward and backward transportation of the ragger is possible with push buttons. The high gear ratio allows an intermittent speed control from 10 to 300 m/h.