Cartridge-type dust collectors are much more efficient than bag-house dust collectors due to their nanofibre filtering cartridges. They are used in high-volume applications, heavy-duty blast cleaning, automated finishing systems, and blast booths of any size.
Kresco cartridge dust collectors are available in two series.
The CDC600-1800 Series is suitable for industrial sandblast cabinets and automated finishing systems. Impellers are available in a range of 600 to 1,800 CFM.
The CDC2000-150000 Series is a modular system designed for blast booths and permanent sandblasting facilities. Standard impellers are available in a range of 2,000 to 150,000 CFM. Higher-velocity systems can be customized upon request.
These dust collectors feature a heavy-duty impeller, driven by an electric motor available in different voltages. The fan motor is located on the clean side of the dust collection system, which significantly increases its performance and its service life. Soft start systems meant to minimize operational costs are also available.
All series come fully equipped as a standard, which includes the dust collection drum and its airtight connection, an automatic cartridge cleaning system controlled by a timer, and a horizontal silencer.
Cartridge dust collectors use nanofibre cartridge media to filter out dust and airborne particles generated during the sandblasting process. Filter cartridges are capable of capturing 99.9% of particles down to 0.35 micron (µm) or over.
The filtering cartridges are made of the industry’s smallest nanofibre (10 microns) – the best in its class, with MERV 15 efficiency on sub-micron particles. This incredible technology is capable of capturing 100% of foreign particulates down to 0.3 µM in size and obtaining unequaled surface loading capabilities with nano-sized interfibre pores. The fibres of a conventional cartridge media are six times larger, which allows small particles to become deeply embedded within the media substrate.
Cartridge dust collectors have a fan mounted on top of their housing to move contaminated air from the blast system into the dust collector.
Inside the dust collector, a set of pleated filtering cartridges is used to capture dust and airborne contaminants (rust, paint chips, etc.), while only clean air is exhausted out through an outlet plenum located on top.
Cartridge dust collectors require only minimal supervision and maintenance. They are durable systems made to last for years if they are used correctly.
They are fairly easy to maintain and only require you to regularly empty the dust barrel and replace the clogged cartridges when they reach the end of their service life. Cartridge filters need to be replaced every few months to a year, depending on their condition and the application.
Collectors are usually equipped with a sieve drawer which traps larger debris. The debris drawer must be emptied often to avoid clogging and air flow restriction.
Kresco cartridge dust collectors are equipped with a controller that will not only tell you when to replace the cartridges, but will also trigger the cleaning system of the cartridge in use so that the operator does not have to worry about this.
The cartridges are cleaned by a series of reverse pulsations induced by Goyen valves. The air blast is evenly distributed all over the inner surface of the cartridges, forcing the release of dust and particles which then fall to the bottom of the collector where they can be collected in a bin.
The pulsation sequence is automated by the DCT1000 controller, which monitors the air flow restriction caused by the saturation of the cartridges and triggers the cleaning cycle when needed. The DCT1000 Sequential Controller can be adjusted to maximize the service life of the cartridge media.
Air flow restriction is obtained by comparing the static pressure differential in inches of water column (inch WC) between the clean side and the dirty side of cartridge filters – the so-called pressure drop. As the filters become loaded with dust, resistance to the air flow increases, and so does the pressure drop.
Unlike other types of dust collectors such as bag shakers, cartridge dust collectors do not need to be stopped in order to remove dust particles from filters. The process occurs continuously and automatically.
The vertical design of Kresco cartridge-type dust collectors maximizes the filtration efficiency of these cartridges, while minimizing the maintenance required on horizontal design cartridges. Indeed, cartridges mounted horizontally lose up to 30% of their filtration capabilities due to dust accretion in the bottom cavity of the media, and for this reason, horizontally-mounted cartridges must be rotated periodically in order to maximize their performance and durability. This is not the case for vertically-mounted cartridges, since they allow dust to fall freely to the bottom of the dust collector without altering their filtering efficiency.
Dust collectors can be installed inside (under some conditions and in accordance with the fire code in force in your jurisdiction) or outside of the building.
When the application generates combustible dust, installing the unit or returning filtered air inside the building is usually forbidden.
However, Kresco offers a variety of NFPA-approved safety designs and features to prevent fire or explosion during operation.
Contact one of our experts today to evaluate the best options for your application.
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