Control of Volatile Organic Compounds Emissions from Manufacturing

= the difference between the operating-related costs for
C' the control device controlling V1 and the operating-
related costs of the control device controlling V2.
C' = the minimum costs associated with controlling V2.
3
ck
= the di fference in emission reduction associated with
control ling emissions at V1 and emissions at V2.
C' = the emission reduction at V2.
5
V = the initial, or higher, flow rate.
1
V = the flow rate at the lower end of the design range.
2
Vx = Flow rate to be solved for.
Table F-4 summarizes the coefficients used in the calculations.
Sixth. Once the flow rates were found, the uncontrolled emission
rates were calculated by the following equation:
where: V, = flow rate at $1,00O/Mg ($2,00O/Mg, $3,00O/Mg)
VI = initial flow rate from process section
ER = initial uncontrolled emission rate.
Table F-5 summarizes these results.
F.2. PROCEDURES FOR CONDENSERS
In calculating the uncontrolled emi ssion rates for polystyrene,
the general question that was asked was: What uncontrolled emission rate,
when controlled to 0.12 kg VOC per Mg of product (i.e., to the RACT level),
yields a cost effectiveness of $1,000 per Mg ($2,000 per Mg, and $3,000
per Mg)? This is slightly di fferent from incineration where, regardless
of the uncontrolled emission rate, 98 percent VOC reduction was assumed.
For polystyrene, the effective percent emission reduction varies as the
uncontrolled emission varies. The foll owing paragraphs detail the
procedures used to cal cul ate the uncont roll ed emi ssion rates associ ated
with the three cost effectivenesses.