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An internationally known organization was looking for a better way to filter hot gases from an incinerator that destroyed obsolete munitions. Their existing dust control system required the gas stream to be cooled to below 500º F so it could run through a conventional baghouse with fabric filters. This cooling process plugged the aftercooler on a regular basis and created a maintenance nightmare. The customer wanted to eliminate the aftercooler – with its high maintenance costs and downtime – and also reduce metal emissions. It was critical that the new system filter hot gases up to 1000º F and do so continuously year-round with minimal maintenance shutdowns.
Griffin engineers, with over 40 years of experience solving tough dust control problems, were up for the challenge. The Nova series was developed to address these difficult conditions. One of the primary concerns was to design a unit that would expand and contract with the temperature changes without causing leakage or fatigue.
The Nova on site. The first of nine for this customer. |
Griffin design engineers also identified a ceramic media that could tolerate a 1650º F airstream, was durable enough to operate non-stop, and was able to be pulse-cleaned. These ceramic elements, made from inert material, are molded into 6-inch diameter cylinders 10 feet long.
The Nova series has been a huge success. The customer’s aftercooler was successfully eliminated and metals emissions were minimized. The new system is operating at greater efficiency and better production rates than the conventional dust collector it replaced. The customer was so pleased with the Nova’s quality and trouble-free operations that they purchased eight more of the collectors for similar applications internationally, with plans to purchase six more the following year.
Right: Drawing of a CF-154-HC Nova, available in a range of diameters with 1, 2 or 3 meter filter elements.
Below: Interior view or the Nova showing the ceramic filter elements installed. |
Patent Pending
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