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Dust Extraction Systems

Dust Extraction

Dust extraction systems are applied to a wide range of applications and industries from food; breakfast cereals, tea and biscuits, to cement, insulation products and aircraft manufacture, some of which involve quite specialised designs. Delta Neu undertakes the full design, complete with site study, design calculations, layout and design drawings and specifications. Our design team will ensure that full planning, installation and commissioning are in place for cost-effective and reliable system in your workplace. All our dust extraction systems comply with the relevant legislation including LEV COSHH and ATEX, where the dust has an explosion risk.

LEV COSHH - Dust Extraction

With many dust extraction systems being designated as local exhaust ventilation (LEV) under HSE regulations for COSHH, the design and performance of the system must comply with the guidelines, which include:

Any dust extraction system designed to meet the requirements of COSHH will be fully compliant and our Spares and Service team will offer maintenance and COSHH survey on completion of the installation.

Hood Design - Dust Extraction

The effectiveness of any dust extraction system depends greatly on the concept of hood design. The more enclosed the dust source or the closer the capture hood to the emission, the lower the airflow required, thus allowing a smaller system to be installed. In any system, we undertake all the calculations to assure you of effective capture or containment and a better designed system. A few key design points on the capture include:

Our Range of Dust Filters - Dust Extraction

With a large range of dust filters available, we can meet most applications and requirements. The Jetline range of fabric filters is both extensive and the most versatile and offers:

In more specialised applications within Dust Extraction, particularly those with very low emission requirements, there are Jetpack cartridge filters and Deltajet sintered element filters, which offer discharge levels of below 0.1mg/m3

In certain industries or applications that require Dust Extraction, a wet filtration system is more appropriate. The Aqualine unit has been designed for applications such as sugar coating in cereal manufacturing where the dust is mixed with a vapour, or in the paper industry where a wet recovery system lends itself to recycling in the pulping process.

ATEX - Dust Extraction

If the dust(s) being extracted by the system can create an explosive dust cloud, as designated under the ATEX directives, then adequate prevention or protection must be provided. In each dust extraction system a risk assessment is conducted with the customer on the dust, application and environment to determine the ATEX requirements. Delta Neu dust extraction filters are available certified with explosion relief protection to suit ST1 and ST2 dusts, and for location in either an ATEX designated zone or a safe, non-ATEX area.

See below to see our explosion panels being tested.

Ductwork System - Dust Extraction

In the design of the ductwork system, it is necessary to consider the dynamic laws of airflow, adequate conveying velocities, distribution and balance, abrasion and wear, energy running costs, sizes and materials available for optimal dust extraction. The dynamic designs are applied in all cases however the construction and material requirements for dust extraction applications are more rigorous than in many other ductwork systems. The design of the ductwork system will have a significant bearing on the fan selection and motor size and the Uniline range offers a broad spectrum to choose from.

Air Recirculation Systems - Dust Extraction

Many dust extraction applications and dust filter installations lend themselves to recirculation of the factory air after the filter process and making a significant contribution to heat recovery and energy management plans. The benefit of air recirculation is two fold. Firstly, the recycled air means that cold ambient air is not drawn in as make-up air due to the negative pressure created by the initial extraction. Secondly, the heat energy from the fan motor is added to the air as it is recirculated.

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