ATEXDEDUST

Atex Deduster for small particles

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 Obiettivo del progetto (Objective)

'AtexDeDust is a partnership of European SMEs that have identified a promising new design and functionality for air cleaning systems in industrial scale. The proposal addresses dust/air systems according to the ATEX Directive for systems with hazard of explosive atmospheres as well as standard applications in a wide range of production lines. Especially we focus on smart, mobile instrumentation to meet the demands of modern production management. This new technology will guarantee safe air pollution control inside production estates and in the output to environment for a wide size of particulate in air and gases. It overcomes the risks of potential explosive atmospheres of dust concentration inside the housing during the periodic regeneration process of the filter elements. Though it allows mobile instrumentation in smarter size, supply with common electric and electronic components and a better filtration performance compared to the state of the art. One main feature to reach this objectives is the use of a improved textile filter material with mani-fold air permeability. This succeed in a diminishing of the pressure loss about the filter layer thereby reducing energy consumption . Combining new approaches in air flow pattern, in filter design, in new cleaning method to dislodge the dust cake from filters and in sophisticated filter material, it will increase the performance of the filtration system.'

Introduzione (Teaser)

Industrial environments produce a lot of dust that can be detrimental to both machinery and personal health. A new air cleaning system that removes nano-scale particles and prevents build-up of explosive dust will tap large global markets.

Descrizione progetto (Article)

Scientists developed an improved industrial-scale air cleaning system with EU support of the project 'Atex deduster for small particles' (http://sites.google.com/site/novusairgmbh/ (ATEXDEDUST)). The ATEXDEDUST system is compatible with the European Commission's Potentially Explosive Atmospheres (ATEX) Directive. It is also aligned with standard applications in a variety of industrial production lines. Software tools to model the spatial and temporal separation dynamics given internal dust concentration for a variety of complex scenarios supported the effort. The tools also enable evaluation of components and reliability.

One of the most important innovations spurring project success was splitting the deduster housing into two compartments. The first cleans the high-volume, low-pollutant concentration air stream. As filter cake builds up, it is periodically removed with suction to minimise accumulation of explosive dust. The filter cake is transferred to the second compartment and subjected to low suction. Division into two compartments and use of ignition source and spark monitoring significantly reduces the risk of explosion.

The filter itself is a conventional drum filter, but it employs a novel fibrous textile material. The drum filter enables more controlled filter regeneration (removal of build-up via suction) and very low pressure loss. Its pleated design supports dust separation down to the nano scale. The specialised textile material supports very high filtration rates. The pleated filter drum design and filtering process are completely novel and have resulted in a patent application.

Design and construction of the first ATEXDEDUST demonstration unit was approved by the Notified Body tasked with assessing conformity of a manufacturer's air cleaning device with essential requirements regarding safety and avoidance of explosion risk. The demonstrator was employed for a four-month duration on a factory floor.

Its conformity with regulations will eliminate the need for explosion-proof instrumentation, significantly reducing costs for manufacturers. Mobility, reduced energy consumption and the ability to filter nano-scale particles will make it even more competitive in the huge global market exploiting nanomaterials. ATEXDEDUST technology with its broad marketability is expected to significantly enhance the competitive position of the associated small and medium-sized enterprises.