Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 215 - ORGANIC MATERIAL EMISSION STANDARDS AND LIMITATIONS › Subpart RR - MISCELLANEOUS ORGANIC CHEMICAL MANUFACTURING PROCESSES › Appendix E - Reference Methods and Procedures

Current through Register Vol. 48, No. 28, July 12, 2024
Introduction
This Appendix presents the reference methods and procedures
				  required for implementing Reasonably Available Control Technology (RACT).
				  Methods and procedures are identified for two types of ACT
				  implementation:
a) Determination of VOC destruction efficiency for
				  evaluating compliance with the 98 weight percent VOC reduction or 20 ppmv
				  emission limit specified in Sections
				  215.520 through
				  215.527;
				  and
b) Determination of offgas flowrate, hourly
				  emissions and stream net heating value for calculating TRE.
All reference methods identified in this Appendix refer to
				  the reference methods specified at 40 CFR 60, Appendix A, incorporated by
				  reference in Section
				  215.105.
VOC DESTRUCTION EFFICIENCY
				  DETERMINATION
The following reference methods and procedures are required
				  for determining compliance with the percent destruction efficiency specified in
				  Sections
				  215.520 through
				  215.527.
a) Reference Method 1 or 1A for selection of the
				  sampling site. The control device inlet sampling site for determination of vent
				  stream molar composition or total organic compound destruction efficiency shall
				  be prior to the inlet of any control device and after all recovery
				  devices.
b) Reference Methods 2, 2A, 2C or 2D for
				  determination of the volumetric flowrate.
c) Reference Method 3 to measure oxygen
				  concentration of the air dilution correction. The emission sample shall be
				  corrected to 3 percent oxygen.
d) Reference Method 18 to determine the
				  concentration of total organic compounds (minus methane and ethane) in the
				  control device outlet and total organic compound reduction efficiency of the
				  control device.
TRE DETERMINATION
The following reference methods and procedures are required
				  for determining the offgas flowrate, hourly emissions, and the net heating
				  value of the gas combusted to calculate the vent stream TRE.
a) Reference Method 1 or 1A for selection of the
				  sampling site. The sampling site for the vent stream flowrate and molar
				  composition determination prescribed in (b) and (c) shall be prior to the inlet
				  of any combustion device, prior to any post-reactor dilution of the stream with
				  air and prior to any post-reactor introduction of halogenated compounds into
				  the vent stream. Subject to the preceding restrictions on the sampling site, it
				  shall be after the final recovery device. If any gas stream other than the air
				  oxidation vent stream is normally conducted through the recovery system of the
				  affected facility, such stream shall be rerouted or turned off while the vent
				  stream is sampled, but shall be routed normally prior to the measuring of the
				  initial value of the monitored parameters for determining compliance with the
				  recommended RACT. If the air oxidation vent stream is normally routed through
				  any equipment which is not a part of the air oxidation process as defined in 35
				  Ill. Adm. Code
				  211.122,
				  such equipment shall be bypassed by the vent stream while the vent stream is
				  sampled, but shall not be bypassed during the measurement of the initial value
				  of the monitored parameters for determining compliance with Subpart V.
b) The molar composition of the vent stream shall
				  be determined using the following methods:
1) Reference Method 18 to measure the
				  concentration of all organics, including those containing halogens, unless a
				  significant portion of the compounds of interest are polymeric (high molecular
				  weight), can polymerize before analysis or have low vapor pressures, in which
				  case Reference Method 25(a) shall be used.
2) ASTM D1946-67 (reapproved 1977), incorporated
				  by reference in Section 215.105, to measure the concentration of carbon
				  monoxide and hydrogen.
3) Reference Method 4 to measure the content of
				  water vapor, if necessary.
c) The volumetric flowrate shall be determined
				  using Reference Method 2, 2A, 2C or 2D, as appropriate.
d) The net heating value of the vent stream shall
				  be calculated using the following equation:
Click here to view
				  image
Where:
H
=
Net heating value of the sample, MJ/scm, where the
							 net enthalpy per mole of offgas is based on combustion at 25 C and 760 mm Hg
							 but the standard temperature for determining the volume corresponding to one
							 mole is 20 C, as in the definition of F (vent stream flowrate) below.
K
=
Constant,
							 1.740
							 x 10-7 (1/ppm) (mole/scm) (MJ/kcal) where standard
							 temperature for mole/scm is 20 C.
Ci
=
Concentration of sample component i, reported on a
							 wet basis, in ppm, as measured by Reference Method 18 or ASTM D1946-67
							 (reapproved 1997), incorporated by reference in Section 215.105.
Hi
=
Net heat of combustion of sample component i,
							 kcal/mole based on combustion at 25 C and 760 mm Hg. If published values are
							 not available, or cannot be calculated, the heats of combustion of vent stream
							 components are required to be determined using ASTM D2382-76, incorporated by
							 reference in Section 215.105.
e) The emission rate of total organic compounds in the
				  process vent stream shall be calculated using the following equation:
Click here to view
				  image
Where:
E
=
Emission rate of total organic compounds (minus
							 methane and ethane) in the sample in kg/hr.
K'
=
Constant, 2.494 x 10-6
							 (1/ppm) (mole/scm) (kj/g) (min/hr), where standard temperature for mole/scm is
							 20 C.
Mi
=
Molecular weight of sample component i
							 (g/mole).
F
=
Vent stream flowrate (scm/min), at a standard
							 temperature of 20 C.
f) The total vent stream concentration (by volume)
				  of compounds containing halogens (ppmv, by compound) shall be summed from the
				  individual concentrations of compounds containing halogens which were measured
				  by Reference Method 18.