PLANT MANAGEMENT
PLASTIC FANS P
lastic fans/blowers for industry, laboratories and buildings are used in a variety of applications
where corrosion resistance, chemical resistance and durability are particularly important. They are primarily used in areas where aggressive or corrosive gases need to be extracted or transported; such as chemical and pharmaceutical plants, in electroplating, in wastewater treatment plants, in laboratories or in the semiconductor industry. Here, the corrosive effect on metallic
components is so strong that materials such as stainless steel or aluminium can quickly be damaged.
ADVANTAGES OF PLASTIC FANS The biggest advantage of plastic fans is their corrosion resistance. Fans made from thermoplastics such as polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC) or polyvinylidene sulphide (PVDF) are extremely resistant to aggressive chemicals and moisture. This makes them ideal for use in environments where corrosive gases such as acid vapours, alkalis or salts are present, this would severely corrode and damage traditional metal fans. Another advantage is the lower
weight of plastic fans compared with fans made of steel or aluminium. This makes installation easier and reduces
Exploring the advantages of plastic fans for mitigating chemically aggressive exhaust air and gases
the structural requirements for the building or construction in which the fans are installed. In addition, the lower weight leads to reduced operating costs as the fans tend to be more energy efficient, especially if speed changes are required to match the desired operating point (e.g. due to increasing filter losses). Plastic fans are also highly flexible,
increasing their adaptability to special requirements. Different types of plastic can be selected depending on the specific application to ensure the best possible protection against the respective chemical influences. Another plus point is the electrical
insulation properties of most plastics, which can be an advantage in certain applications. In the case of explosive exhaust gases, however, they must be electrostatically dissipative, which can be achieved by using PPs-el with additives such as carbon black particles in the plastic. In addition, plastic fans often have a longer service life due to their corrosion resistance.
COLASIT’S RANGE Colasit offers a wide range of plastic fans (also in ATEX version) developed for both standard applications and special customised requirements. Colasit fans cover a wide range of volume flows (V) and pressure ranges (p). In terms of volume flows, Colasit plastic fans can handle air volumes
Plastic fans offer good
corrosion resistance, low weight, long service life and flexibility in material selection
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from a few hundred cubic metres per hour to over a hundred thousand cubic metres per hour and more. The pressure ranges also vary greatly and cover both low- and high-pressure requirements up to over 7,000 Pa. The product range extends from the
smallest standard fans (from a tube diameter of Ø 75 mm) and medium sizes up to Ø 400 mm to large fans with tube or duct connections up to 1,250 mm, which have been developed for industrial applications with high air flow rates and high-pressure requirements. Colasit offers both centrifugal and axial flow fans to meet the specific requirements of different applications. In addition, Colasit roof fans are used on the roofs of end customers to transport the exhaust air out of the building.
CONCLUSION Colasit plastic fans are indispensable in many industries, especially where aggressive, corrosive and explosive gases need to be transported or extracted. Their excellent corrosion resistance, low weight, long service life, flexibility in material selection and use for ATEX applications make them an ideal solution for demanding environments.
For more information visit:
www.colasit.com/en/products
Colasit fans cover a wide range of volume flows and pressures
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