PIONEERING technologies for increasing efficiency are a focal point of Benninghoven at bauma 2025. Benninghoven is a supplier of asphalt mixing plants, machines and services to the construction industry and a subsidiary of the Wirtgen Group.
Benninghoven offers a number of innovative solutions, including for reusing asphalt and temperature-reduced asphalt, for dust collection and for the use of hydrogen as a fuel of the future, as a way to increase the sustainability in asphalt production.
Carbon free asphalt production with 100 % green hydrogen
This saw Benninghoven present the MULTI JET burner generation and MULTI JET Control burner control at bauma 2025, which was held in Munich. This burner generation can use four different fuels at the same time, regardless of their physical state – whether solid, liquid or gaseous. In addition to new plants, the burners can also be used as part of a retrofit, regardless of the manufacturer of the existing plant.
A special feature of the MULTI JET burners is the use of mixed fuels, allowing for example the simultaneous use of hydrogen, LPG, HVO, biogas and natural gas through separate nozzles. Fuels can be switched on the fly, without shutdown or downtime.
This means that the system ensures a reliable supply of different fuels, offering owners a high level of flexibility when selecting the most cost-effective and most readily available energy source. This significantly contributes to lowering operating costs, also with respect to future CO2 prices.
In addition to this, the noise emissions of the new burner generation was reduced by 5 dB(A), which corresponds to cutting the perceived noise level in half. The electrical power consumption was also reduced by 20 % while maintaining the same feed capacity.
Dust collection solution from Benninghoven optimises asphalt production
With the newly developed dust collection system, the specialist for asphalt mixing plants offers another solution that actively contributes to sustainability and process quality in asphalt production. \Dust collection systems optimise the smooth operation of asphalt mixing plants. The dust generated during the mixing process, especially stone particles and bitumen vapours, has to be extracted and filtered efficiently.
This is not only relevant to the process, but is also subject to strict official emissions requirements. As these regulations are being tightened up increasingly in many countries and regions, effective dust collection solutions are becoming more sought after.
The key features of the new dust collection system are the flow-optimised design, a good overall energy balance, low residual dust values, a high level of process reliability, a large filter surface and easy access for service.
Maximum recycling: more profit with the recipe generator
The aim of maximum recycling is to enable reuse of high-quality materials in order to maintain or even improve the original material quality.
Another advantage of maximum recycling is a significant reduction of the CO2 emissions. Studies have shown that up to 20% CO2 can be saved with a recycled materials content of up to 60%.
