Control of Volatile Organic Compounds Emissions from Manufacturing

c.Jnissions factors- However, different process 'trains
dedicated to widely differins polymers may have signifr-
cant differences in their emissions factors.
B. Recent process hprovements have included a shift to the
use of vacuum pumps to generate process vacuums. These
pumps consume less energy than steam eductors and also nave
Lower emissions factors. Industry ' s experience with t.?.?e
use of vacuum pumps arc substantially different than one
would expect when reviewing &he model plant emissions fac-
tors. Our experience indicates that the -following emissions
factors are more typical of newer continuous polystyrene
process technolow :
Tankage 0.01 - 0.02 kg VOC/1000 k@ resin
Styrene Recovery Unit 0.05 - 0.06 kg VOC/1000 kq resin
Condenser Vent
Extruder Quench Vent 0.009- 0.01 kg VOC/1000 kg resin
We trust that these comxnents will be cor,hi.de&d as you revise the
draft model plant emissions factors. We thank: you for givins us the
cpportunity to review this materf a1 and are wi.llin5 tc meet w i ~ you !
to discuss our concerns in gzeater detail. a.ch Symuleski, the Work
Gxoup leader w ill contact you for follow-up in this regard.
Sf ncerely,
Janet So Matey
Manager
Air 3rosrams
I
I
i
I
!
I
I
I
I
, I
i
: '
!
I
I