Dust particles containing paraffin are adhesive and waxy, and they can clog a filter within a very short time. In this case, cleaning is no longer an option and the production process could come to a standstill – the worst case as far as the operator is concerned. The Infa-Lamellen-Jet (AJL) is a proven aspiration filter unit for exhaust air cleaning processes under these conditions.
Low dust emission values for difficult filtration processes
Filtration plant for paraffinic dust particles
Dust particles containing paraffin are adhesive and waxy, and they can clog a filter within a very short time. In this case, cleaning is no longer an option and the production process could come to a standstill – the worst case as far as the operator is concerned. The Infa-Lamellen-Jet (AJL) is a proven aspiration filter unit for exhaust air cleaning processes under these conditions.
The dust exposure levels of industrial production processes are regularly reduced in order to establish a safe and clean working environment in which a better product quality is achieved. Many dust types present operators and filter manufacturers with special challenges because they are not always free-flowing and do not agglomerate easily.
Low dust emission values
One example where an AJL is used to remove the dust from paraffinic particles is Reagens, a North German supplier of speciality chemicals for the manufacture of PVC and other thermoplastic polymers. Organically based stabilisers and a range of chemicals are produced at its facility in Loxstedt. These speciality chemicals are hardly noticed in everyday life, yet they are essential for processing PVC. Without them, the final products would be unable to develop the required properties.
The cyclone which was previously used to de-dust the production processes could no longer meet Reagens’ requirement for lower dust emission values. Infastaub therefore had to fulfil several demands. Clogging of the filter media had to be avoided under all circumstances. A long service life of the filter system in continuous operation, a low residual dust content, a small footprint and low operating and maintenance costs were other important criteria for the filter design. The decision for the Infa-Lamellen-Jet, which provides a maximum filter area in minimum space due to its pleated lamella structure, was reached together with the operator. The filter lamella surface was coated with a PTFE membrane to ensure a stable de-dusting process despite the paraffinic particles. The pleated filter element was designed to withstand pressure shocks in order to comply with explosion protection requirements. Additional explosion decoupling systems were planned on both the raw and clean gas sides as well as at the dust discharge. The obsolescent fan was replaced with a more energy efficient type.
Highly reliable processes
Jet pulse cleaning guarantees highly reliable processes. An electronic control unit monitors the differential pressure drop across the filter media and the filter elements are cleaned automatically at exactly the right moment. The operator profits from lower costs for compressed air and the fan’s energy consumption because the differential pressures in the filter system are optimised. The de-dusting process runs continuously and the residual dust content is well below the stipulated 10 mg/m3.
www.cpp-net.com search: cpp0315infastaub
Share:
