FLUORESCENT TRACING IN PROCESS CONTROL
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31-01-2009, 12:27 AM


Inhibitor chemicals are added to prevent scaling and fouling in heat exchangers, condensers and boilers. Controlling the concentration of inhibitor chemicals is essential in controlling the chemical costs maximizing the efficiency of the process. Flourescent tracing is a simple concentration measurement technique that can be used in concentration control. This seminar and presentation looks into the various conventional methods by which the inhibitor chemical concentration is maintained and the application of fluorescent to the same. Controlling water treatment chemical costs and maximizing the efficiency of the process in which they are involved, is a central theme in today?s manufacturing environment. When chemicals are used in integrated process fluid and cooling / boiling water systems, correct dosage is not only critical to the Company?s bottom line, but also essential in maintaining the integrity of the systems they are designed to benefit. Fluorescent tracing technology is found to be effective in controlling the cost and the quality in such systems.
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muthupandi
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05-01-2011, 05:47 AM

i need the function & iagrams of the subject posted above
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18-01-2011, 05:19 PM

Fluorescent tracing is based on a simple measurement concept. Inert chemical tracers are mixed, at a known specified level, with the water treatment chemicals. The tracer material is used at a low concentration in the sys- tem, generally in the range of parts per million down to parts per trillion. Remaining inert, the tracer does not react with any of the other chemicals in the water and does not change the treatment program’s activity. A sidestream of recirculating cooling water is then piped through a flow cell containing a microprocessor- based fluorometer. Light of a specific wavelength passes through a flow cell, exciting the tracer com- pound and allowing its emissions to be read by a de- tector. The resultant signal is sent to the microproces- sor, which determines the concentration of the tracer, with dosages that can range down to a few parts per billion to parts per trillion, depending on the tracer compounds used. Since the ratio of the tracer to chem- ical inhibitor is known, this provides a measure of in- hibitor concentration in the system.


reference:
aicheuploadedFiles/CEP/Issues/040266.pdf
distrilabparticlesfilters/pdf/Bul120'A'%20FluorPoly.pdf
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