Cement Americas

WIN 2019

Cement Americas provides comprehensive coverage of the North and South American cement markets from raw material extraction to delivery and tranportation to end user.

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24 CEMENT AMERICAS • Winter 2019 • www.cementamericas.com FEATURE outside contractors to change the bags. Due to the cost of replacing the bags and the downtime required while the bags are being switched out, the final result can very cost- ly for the company. Cyclones, however, require very little maintenance. At most, plant engineers have to observe the pressure drop every so often, and inspect the walls of the cyclone to insure that is has not worn down from the appli- cation. By placing a cyclone in front of the baghouse or car- tridge collector, the bag life can be increased by as much as one to two years, depending on the application. 5. Allows Baghouses to Operate in Difficult Applications. Bags and cartridges are not well suited for fibrous, sticky or hydroscopic dust. Cyclones perform in these applications and prevent the material from reaching the filters. Placing a cyclone in front of a baghouse or cartridge will help pre- vent time and money spent on repairing or replacing the filter, and ultimately will lengthen the life of the filter. Many applications now require the need for wet collectors, which results in needing to treat the water run-off. Cyclones pre- vent the need for wet scrubbers and will prevent water treatment costs and time wasted on shipping the water out to be treated. Information for this article courtesy of Aerodyne Environ- mental, 800-358-7546, www.dustcollectorhq.com. For dust collection systems to operate as they are designed, baghouse and cartridge collector filters need to be regularly cleaned. Many systems employ compressed air for this pur- pose, periodically sending blasts of air through the filters, which effectively removes particulate matter from them. The frequency of these cleaning cycles can be controlled by various methods, such as a pressure drop monitor that allows for detection of a filter that is beginning to clog, or with a simple timer. Air flow is typically controlled with the use of a solenoid operated diaphragm valve. These valves are the critical component in keeping a sys- tem operating at peak efficiency. A valve that is stuck in the closed position or does not open when required will not allow the filters to be cleaned, which will result in an overloaded system that could potentially allow higher than expected levels of particulate to be discharged into the atmosphere or lead to premature system failure due to increased loading. Conversely, a valve that gets stuck in the open position will result in costly compressed air being constantly sent through the filters. Maintaining the health of these valves is obviously an essential factor in promoting the long-term effectiveness of a dust collection system. The simplest way to achieve this is by making sure that the valves are included in a pre- ventive or predictive maintenance program, so that any issues can be addressed before they become major prob- lems. More advanced systems provide continuous mon- itoring of valve operation, which can alert maintenance personnel to any problems with the valves or the system in general. Ensuring Efficiency Aerodyne's GPC Cyclone Will Save You Space Aerodyne's low profile cyclones will fit in areas that standard cyclones are just too big for. The vertical GPC cyclone is about 50% as tall as a standard cyclone, while the horizontal GPC is about 35% as tall as a standard cyclone for the same airflow. Ask Aerodyne about our six models under 8 ft 3 !* Standard Cyclone Vertical GPC Horizontal GPC 20 ft. 10 ft. Shown ar 7 ft. dy

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