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Exhaust filters collect oil or vaporized liquid from vacuum pumps or engines, preventing dangerous pollutants from entering the atmosphere or employees’ lungs. They contain chemicals that condense the oil back into a liquid, and there are two types: coalescent and capture. Coalescent filters recover the oil, while capture filters store volatile chemicals in a fume hood for safe disposal. Regular replacement is necessary to maintain efficiency.
An exhaust filter collects oil or vaporized liquid from the air vent of a vacuum pump or gasoline engine. With many industrial machines, their raw exhaust doesn’t have to be dumped in a room or even outdoors because the air contains smoke or fumes. Installing an exhaust filter will help run a pump with better efficiency and save lubricating oil.
Under normal circumstances, a pressurized pump will cause some oil to condense into vapor and remain in the air. Machines that are under particularly high pressure or suffer from broken seals will atomize oil even more easily. The fog can enter employees’ lungs or the atmosphere as dangerous pollutants.
Many pumps, across a wide range of industries, handle other liquids such as volatile chemicals that can vaporize and cause similar problems. Therefore, experts in energy efficiency and pollution have developed an exhaust filter that can remove tiny floating molecules of different substances, leaving the air safe for venting indoors or outdoors.
An exhaust filter isn’t a fine paper mesh, like a home air filter, but it does contain a chamber of chemicals that force the foggy oil to condense back into a liquid. These chemicals gradually become less effective, so someone has to replace the exhaust filter at regular intervals to keep the air flowing smoothly.
There are two types of exhaust filter. The coalescent variety collects and recovers the precious liquid, usually oil, returning it to the pumping chamber to reach its destination. Even if a factory doesn’t need to clean its air, this filter could help it reduce costs by wasting less oil.
To protect the health of employees, the exhaust filter’s capture variety condenses liquid, usually a volatile chemical, and stores it in a vessel called a fume hood. Then the solvent can be safely disposed of as hazardous waste, instead of contaminating the air, soil or groundwater.
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