USA SALES ONLY
Southeastern Automation, Inc.
PO Box 22820
Knoxville, TN 37933-0820
Phone: (865) 675-3080
Fax: (865) 675-3060
www.southeastern-automation.com
Southeastern Automation Product Sheet
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Southeastern Automation, Inc. |
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Southeastern Automation Product Sheet |
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Perma Pure Accessories |
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Perma Pure Ammonia Scrubbers are designed to remove ammonia from a gas stream to protect the analyzer from clogging due to the formation of ammonium salts. Ammonia is a highly reactive gas. It is sometimes added to stack gases to reduce the nitrogen oxide content of the gases by conversion to nitrogen and water (the DeNOx process). When present in gas samples, ammonia will readily react with other components such as sulfur dioxide in the sample to form ammonium salts. This salt is relatively low-boiling, so it is present as a gas at the higher temperatures in the stack and in the heated line. When the sample cools down while passing through our dryer, it precipitates out as a solid, clogging the dryer or analyzer. For this reason, we recommend installing an ammonia scrubber inside our system to prevent damage to our dryers and to the analyzers downstream. The Perma Pure ammonia scrubber consists of a polysulfone or stainless steel shell housing filled with a housing filled with a phosphoric based scrubbing media and inert ceramic burl saddles. The water vapor in the sample activates the scrubbing media to produce phosphoric acid. The water vapor in the sample activates the scrubbing media to produce phosphoric acid. The phosphoric acid then reacts with the ammonia in an acid-base neutralization reaction producing a phosphate of ammonia. This compound is a solid even at elevated temperatures, and deposits immediately within the ammonia scrubber as a visible salt residue. For proper operation, the ammonia scrubber should be kept at a temperature above the sample dew point to avoid the loss of water-soluble analytes. For this reason, Perma Pure now offers a heated ammonia scrubber which can be placed in the sample path. The length of time between refills will vary depending upon the concentration of ammonia within the gas sample and upon the sample flow rate. Our testing has shown that at 2.5 lpm, 100 ppm concentration, the media will last 120 hrs, or simplified 1 lpm, 1 ppm, media life will be 30,000 hours. In addition to being a "stand alone" product, Perma Pure incorporates ammonia scrubbers into our conditioning systems to prevent damage to our dryers and controls. To see how the ammonia scrubber is used as an accessory to our dryers, visit the Mini-GASS or GASS-II sampling systems product pages.
AS
Series Ammonia Scrubber
AS
Series Ammonia Scrubber Manual |
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FF-Series filters from Perma Pure are high efficiency particulate and coalescing filters designed for high temperature corrosive service. Used as a coalescer, this filter removes liquid droplets and particles down to 0.1 micron with an efficiency of 95% or greater. The thick, high capacity borosilicate glass and Teflon filter element uniformly drains coalesced liquids to the bottom of the housing, where they are evacuated through the 1/8" NPT drain port. For particulates, the filter removes 95% of all particles 0.1 micron or greater, with a low pressure drop and long element life. Coalescing filtration is achieved by forcing the gas stream through the filter element (see illustration). The flow path shown reflects a coalescing application. In this situation, small aerosol particles are forced together as they pass through the fine inner layer of the filter element. The larger drops created in this process fall out of the gas stream due to their mass. This natural separation is assisted by the coarse drain layer on the outside of the filter element. In a particulate application, this filter can be installed to reverse the flow path shown. The captured particulate then collects on the outside surface of the element, permitting visual determination of element condition.
FF-250
FF-250 Manual |
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FB-Series bypass filters are inertial separation filters for high particulate load applications. Used upstream of fine particulate filters, FB filters greatly increase the life and performance of particulate and coalescing filters. Flow can be passed through under pressure or pulled through under vacuum. Perma Pure offers a compressed air-driven eductor and a heating system as options. Large volumes of high-velocity, particulate laden gas pass straight through the filter element (see illustration). Sample is drawn from the bypass flow through a port which is perpendicular to the main flow. Pulled off the bypass stream, the sample is filtered by the mesh or porous filter element. The bulk of the particulate passes directly through the length of the filter element due to its high velocity and inertia, which prevents particulate from being diverted by the pull of the sample outlet port. Any particles that are pulled to the sample outlet are filtered by the element. The high velocity flow also continuously flushes the filter element, reducing pore clogging. For applications involving a high temperature, wet sample, Perma Pure offers bypass filter heating systems. This involves a simple electrical resistance strip heater mounted in a piece of steel channel. The temperature is controlled with a factory pre-set mechanical thermostat which switches electrical power on and off to maintain the desired setting. Applications for Perma Pure FB-Series bypass filters can be found in both CEMS and process monitoring applications. In addition to reducing high particulate, these filters can be installed to reduce the response time of analyzers. A pump or vacuum eductor is used to pull the fast bypass sample through the filter thus reducing the response time when the sampling system is located some distance from the sample point. Since analyzers generally only require a sample flow of 1-2 lpm, the time required to pull the sample from the sample point to the analyzer would be excessively long without this fast bypass loop. This increases the life of conditioning systems. By virtue of its design the Perma Pure Bypass Filter, which is sometimes called an inertial filter, serves to eliminate large amounts of particulate and tends to be self cleaning.
FFB Series Bypass Filters
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Stay in Complete Control of Your Sample and Calibration Gases
Principle of Operation Sample gas is extracted from the process through a filter probe and conditioning system to remove particulate and moisture. The conditioning system supplies a clean, dry sample to the back panel of the Model 3300 Flow Control Drawer. The stack probe filter and sample pump performance are indicated by the flow control drawer vacuum/pressure gauges.
Model 3300
Model 3300 Manual |
All tubing tolerance is +/- 10%. |
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