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Control of Volatile Organic Compounds Emissions from Manufacturing

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Table 4-7. ADDITIONAL ENERGY REQUIRED FOR CONTROL WITH RACT IN POLYSTYRENE PLANTS<br />

Annual Steam Annual Natural Gas Annual Electricity Total Energy .<br />

Process <strong>Control</strong> ConsumpU on Consumption ,Cons;mption*---<br />

<strong>Control</strong> Scenario Sect iona 0evi.ce m d - - 1,000 scf/yrD -$ij7 kWhlyr flyr bbl oil/yr /Y r<br />

Total Plant MR CI<br />

MRe Condenser<br />

Process Section<br />

Uithin Line ~d - 104.500 5,120 160 5.120<br />

(11.330) (555) (555)<br />

MRe Condenser - - - - 2,900 140 140<br />

Process Section<br />

Across Lines md<br />

a MR = material recovery.<br />

me<br />

b Standard cubic feet (scf) at 60°F.<br />

Condenser (same as "Total la-nt")<br />

C<br />

Equivalent barrels <strong>of</strong> distil late oil required considering energy conversion efficiencies:<br />

steam: lOOOlb = 1.525 GJ<br />

natural gas: 1068tu = 1.0551 GJ and 1040 But(HHV)/scf at 60°F<br />

electricity: 1 kwh = 9.476 x lo-3 GJ<br />

oil: 1 GJ = 0.1628 bbl oil<br />

d Styrene in air at 3.09 kg VOC/Mg <strong>of</strong> product (numbers in parantheses are at 0.2 kg VOC/Mg <strong>of</strong> product).<br />

e~tyrene in steam. Nunbers are applicable for b.oth 3.09 kg VOC/Mg <strong>of</strong> product and 0.2 kg VOC/Mg <strong>of</strong> product,

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