Control of Volatile Organic Compounds Emissions from Manufacturing

.
The thermal oxidizer is provided with special burners and burner
guns. Each burner is a combination fuel-waste liquid unit. The
absorber vent stream is introduced separately into the top of the
burner vestibule. The flows of all waste streams are metered and
1 1 I
sufficient air is added for complete combustion. Supplemental natural
I
' I
I 1
gas is used to maintain the operating temperature required to combust
the organics - and to maintain a stable flame on the burners during
minimum gas usage. Figure D-5 gives a plan view of the incinerator,
2, Sampling and Analytical Techniques. The vabor feed streams '
(absorber vent) to the thermal oxidizer and the effluent gas stream
were sampl id and analyzed using a modified anal ytiical re'ac tor recovery'
run method. The primary recovery run methods are Sohio Analytical
Laboratory procedures.
The mdified method involved passing a measured amount of sample
gas through three scrubber flasks containing water and catching the
scrubbed gas in a gas sampling bomb. The samples were then analyzed
with a gas chromatograph and the weight percent 08 the components was
I I
determined .
Figure 0-6 shows the apparatus and configuradiorl used tb sample
I
the stack gas. It consisted of a sampling line from the sample valve1
to the small water-cooled heat exchanger. The exchanger was then
I
connected to a 250 ml sample bbmb used to collect thd unscrubbed
I
sample.
IB
The bomb was then connected to .a pair of 250 ml bubblers,
1
each with 165 ml of water in it. The scrubbers, in turn, were connected
to another 250 m1 sample bomb used to collect the scrubbed gas sample
1
which is connected to a portable compressor. The compressor discharge
then was connected to a wet test meter that vents to the atmosphere.
After assembling the apparatus, the compressor was turned on
I
drawing the gas from the stack and through the system at a rate of
I
about 90 cm3/s ( 0.2 ft3/min). Sample gas was drawn until at least
0.28 rn
'
3 (10 ft
3 ) passed through the scrubbers. After the 0.28 m 3
(10 ft3) was scrubbed, the compressor was shutdown and the unscrubbedl
I
bomb was analyzed for CH4, C2's, C tl and C3H8, the scrubbed bomb was
3 6'
I
analyzed for N2, air, 02, Cop, and CO, and the bubbler 1 iquid was
analyzed for acryloni tril e, acetoni tril e, hydrogen cyanide, and total
1 1
I
I