Last month a second Super Jet filter for NZ was installed, this time in Auckland, by NZDUCT+FLEX, NZ distributor for the world leading filtration experts JKF in Denmark. The unit was chosen as it offers significant cost savings compared to a Modular filter large enough to handle similar air volumes, whilst also saving space because of the Jet filter’s very compact footprint.
Geoff Ebdon, Sales Manager for NZ DUCT+FLEX says “These are one of the newer filters from the JKF range and are fitted with POWERPULSE cleaning meaning, along with JKF Super Blower filters, they are the world’s lowest energy consuming pulse filters. Fully automated sensor controls give you 24/7 operation if needed, the power usage and compressed air required is the lowest on any filter system available. Most dust extraction systems work on the same basic principle: a contaminated airflow is fed into a chamber containing filter bags, which capture the dust but allow the cleaned air to pass through the filter material, to atmosphere. With time, these socks become blocked, suction drops off and harmful, micron sized dust leaks out into the air and workplace. So manufacturers have devised cleaning systems either using compressed air to clean the filter socks, or by blowing air in reverse back through the material occasionally. While this cleans the filter socks, it uses more energy and with time the physical damage to the socks from the pulsed air, means they need replacing.“
In Denmark, Duct+Flex’s supplier JKF has developed PowerPulse, a unique cleaning system that operates only when the socks actually need cleaning. “This feature can help your company reduce emissions by 10 percent and reduce compressed air use by 80 percent.” confirms Ebdon.
PowerPulse is the most effective cleaning system in the world’s extraction market: PowerPulse waits until its sensors inform it that the socks need cleaning. The mobile header unit then moves around, sensing the air flow through the filter socks as it does so. It then selects just enough compressed air to clean the individual sock. While every other filter uses a fixed pulse of around 5 bar, PowerPulse adjusts automatically between 1.5 and 5 bar depending upon the degree of dust buildup. This unique ability to think for itself saves as much as 80 percent of compressed air against any other filter system. Because the filter socks are cleaned less often and more gently, they last longer, again saving on replacement costs.
“Of course you would expect this technology to cost more, but due to the manufacturer JKF’s 50+ years history, and volume of production, the price is extremely competitive,” says Geoff Ebdon. “Innovation in JKF means our company has now secured a well deserved reputation of offering equipment for dust filtration that is 30 years ahead of anything seen in NZ and, and at half the price!”
The 2420mm square foot print supports a filter system capable of handling air volumes up to 67,000m³ – an ideal product for new installations where sites cannot accommodate a large modular unit.
Dust can be dangerous. Dust explosions do occur and can destroy plants and severely injure staff. Most JKF filters can be specified to European Safety ‘ATEX’ standard. Many other manufacturers can also do this but they place the explosive release membranes on the sides of the filter. This allows the explosion to escape, but it does so with a shockwave and fire burst that can be 50-60 metres long. It injures anyone near the filter at the time.
JKF Super Blower and Super Jet filters release the shockwave through the roof. The feature is called VFV – vertical force venting. There are no flames, no damage and no injury to staff (unless they happen to be standing on top of the filter at the time). After the event, the membranes and filter socks will need replacing but the filter can be up and running again very quickly – there is no fire to cause un-repairable damage.
Nav Sharma from NZDUCT+FLEX’s own Install team finishes : ”We now have Super Jet filters in the North and South Islands, and SuperBlower filters in the South Island . When we leave the site, we are proud to have installed the safest and most energy efficient filters available. It is satisfying when the customer and staff walk by and say ‘ wow’ as these are big filters, but they are just like oversized pieces of Lego when we are craning them into position . It is the technology that is really impressive – they are smart – they clean themselves then tell the customer (and us) everything that is happening during operation from their state of the art diagnostics.”