Royal Dutch Kusters Engineering

Royal Dutch Kusters Engineering

Laurens Janszoon Costerstraat 8, 5916 PS Venlo, Netherlands

AboutRoyal Dutch Kusters Engineering

During the recycling process of paper or paper products, plastics and other non-paper materials are mixed within the paper pulp. Once separated from the pulper, this fraction is referred to as paper pulp rejects. These rejects are often transported and processed with a large amount of moisture, adding to transport and gatefee costs. To lower these types of costs, rejects are commonly dewatered by various pressing methods such as a screw press. To improve on these current methods, Kusters developed the Organic Liquefying Press.

Dewater Paper Pulp Rejects

  • reduce transport costs and gatefees

Depending on the process of a paper mill, the paper rejects make up around 5 to 25% of the paper. Because of its high moisture levels after being separated from the pulp, one of the main challenges for this fraction is to optimise the dewatering process. One of the methods to do this is through high pressure.

Using hydraulic pressure to dry rejects

The OLP brings smart waste management by removing moisture from materials using a pressure of up to 280 bar. The press has a menu-based touch-screen from where the system can be automatically optimised for the ideal throughput and segregation in real time depending on the specific

characteristics of the waste.

Reduce weight of rejects by up to 50% in one step

The Organic Liquefying Press (OLP) optimises the drying process of paper pulp rejects and can signficantly lower disposal costs for paper manufacturers. The OLP allows the user to separate moisture from paper pulp rejects in a smart and energy efficient way. The technology enables up to 50% additional weight reduction of paper pulp rejects after these have been fed through an ordinary screw press.

Scale the process to your application

At the moment, the OLP is available in three models that each offer a different capacity: The OLP1000, OLP7500 and OLP5000. This way we can offer a solution with a suitable capacity for your application, with a variety of screen sizes and pressure settings.

Knowledge partner in press technology

Kusters has been involved in the development, design and production of presses since 1981. With over 500 presses installed globally and most still running we have processed various materials such as wood, manure, sludge, paper, organics, foodwaste, banknotes, plastics, green waste, cloth, tobacco, coffee, paper pulp rejects, metals, MSW, etc.

Improving on existing dewatering methods

Commonly used dewatering technologies such as screw presses generally show moderate drying results. Often, 40 to 60% of the moisture still remains after pressing. Through reaching a higher pressure per cm2, the OLP is able to deliver a more constant quality resulting in better dewatering effects.