Control of Volatile Organic Compounds Emissions from Manufacturing

I 8
- a
F.Z. 1 Sty rene-i n-Steam mi ssi ons
For ~ol.
I
1
81, ,I, ;I ''18
1 ' 1, 8
1 ' 8 , I , ,I! 1 1
The basic equation for cal'blati ng
8 ,
(1) 'CE = AC - (0.9 E R x~ RC)
ERed I 1 1
where: CE = cost effectiveness, $/Mg
AC
I1 1 1
..- = annual ized ' cost' of condenser to 'reduce uncontrol 1 $d
~ --
emissions to 0.12 kg VOC/Mg product, $/yr
RC = recovery credit, $/Mg, = $0.7{38/kg of styrene
0.9 = efficiency of actually recovering the styrene
from the condenser
€Red = annual emission reduction from uncontrol led
~
to 0.12 kg I VOC/Mg S product, MgJyr
11 "' '
. yst.yrene, we are a1 ready deel i
- - 1
and operati ng requi rements (which were assumed coktdnt) when the
uncontrolled emission rate is at 3.09 kg VOC/Mg t. In order to
I 1 I I
get a cost effectiveness of $11,000 per Mg, a stnall'er uncontrolled
emlssion rate is needed. ~hul, annual ized costs assbci ated with
polystyrene are a constant - equal to $8,300.
Emission reduction, in general, can be calculated with the
following equation:
(2) ERed = (Emission Rate x Capacity) - (0.12 x Capacity)
Capacity is given: 36.75 Gg for a process line and 73.5 Gg
for the plant. Thus the above equation reduces to:
For single process line:
(3) ERed = (ER x 36.75) - (0.12 x 36.75)
For two process lines:
- -- - -- i
= 36.75 ER - 4.41
(4) ERed = (ER x 73.5) - (0.12 x 73.5)
! F-10
!
' , , ' ,
I
I
I
I
I
I
I
I
I
, , , ,