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15i Il <br /> 10 <br /> ATTACHMENT B <br /> August 1989 <br /> A detailed schematic of the proposed treatment compound <br /> layout with the necessary piping and electrical connections is <br /> also enclosed (Attachment D) . The System to be installed <br /> consists of a single 20--kilowatt (kw) unit equipped with twin <br /> platinum catalysts. The twin catalysts enable the unit to <br /> operate at a maximum flow rate of 300 scfm. A 5-hp blower will <br /> be connected in ser-Jas/parallel with the existing 1-hp blower, to <br /> provide the necessary vacuum to extract the vapors from the added <br /> vent points, and to then exhaust the vapors to the System. The <br /> System will operate at a temperature of 600 degrees Fahrenheit <br /> (°F) , and will achieve TPH Destruction Efficiencies greater than <br /> -site non-methane hydrocarbon emissions <br /> 99 percent. The total on <br /> will not exceed the permitted maximum of 4.7 pounds per day. <br /> The System operates on the basic principle that the air- <br /> vapor mixtures that enter the system are heated to a temperature <br /> of 600°F before they enter the catalyst chamber. The presence of <br /> the twin platinum catalysts promotes the combustion of hydro- <br /> carbons (i.e. , Reaction I) that otherwise occurs at temperatures <br /> greater than 1.600°F, to occur at a much lower temperature <br /> (600°F) . <br /> C6 116 + 7.502 = 6CO2 + 3H20 (t) <br /> Since high destruction efficiencies of hazardous vapors to i <br /> harmless gasses such as carbon dioxide (CO2) and water {H2O} are <br /> achieved at lower temperatures, the materials of construction <br /> required for the System, are not cost prohibitive. Thus, the <br /> System is effective in terms of destruction efficiencies achieved <br /> and is also not cost prohibitive. <br /> ', � � GR�H'SI�IS,CIlil2 <br /> is <br /> 1'ecNsai.u�:5:1XC. <br />