Eo is the mass rate of TOC discharged to the atmosphere, kg/hr (lb/hr)
NR 440.675(5)(b)4.c.c. The mass rates of TOC (Ei , Eo) shall be computed using the following equations: where:
Cij and Coj are the concentration of sample component “j” of the gas stream at the inlet and outlet of the control device, respectively, dry basis, ppm by volume
Mij and Moj are the molecular weight of sample component “j” of the gas stream at the inlet and outlet of the control device, respectively, g/g-mole (lb/lb-mole)
Qi and Qo are the flow rate of gas stream at the inlet and outlet of the control device, respectively, dscm/min (dscf/min)
K2 is a constant, 2.494 x 10-6 (1/ppm)(g-mole/scm)(kg/g)(min/hr) for metric units, where standard temperature for (g-mole/scm) is 20°C, and 1.557 x 10-7 (1/ppm)(lb-mole/scf)(min/hr) for English units, where standard temperature for (lb-mole/scf) is 68°F
NR 440.675(5)(b)4.d.d. The TOC concentration (CTOC) is the sum of the individual components and shall be computed for each run using the following equation: where:
CTOC is the concentration of TOC (minus methane and ethane), dry basis, ppm by volume
Cj is the concentration of sample components in the sample
n is the number of components in the sample
NR 440.675(5)(c)(c) When a boiler or process heater with a design heat input capacity of 44 MW (150 million Btu/hour) or greater is used to seek to comply with sub. (3) (a), the requirement for an initial performance test is waived, in accordance with s. NR 440.08 (2). However, the department reserves the option to require testing at such other times as may be required. NR 440.675(5)(e)(e) The following test methods in Appendix A of 40 CFR part 60, incorporated by reference in s. NR 440.17, except as provided under s. NR 440.08 (2), shall be used for determining the net heating value of the gas combusted to determine compliance under sub. (3) (b) and for determining the process vent stream TRE index value to determine compliance under sub. (3) (c). NR 440.675(5)(e)1.1. Method 1 or 1A, as appropriate, for selection of the sampling site. The sampling site for the vent stream flow rate and molar composition determination prescribed in subds. 3. and 4. shall be, except for the situations outlined in subd. 2., prior to the inlet of any control 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. No transverse site selection method is needed for vents smaller than 10 centimeters (4 inches) in diameter. NR 440.675(5)(e)2.2. If any gas stream other than the air oxidation vent stream from the affected facility is normally conducted through the final recovery device: NR 440.675(5)(e)2.a.a. The sampling site for vent stream flow rate and molar composition shall be prior to the final recovery device and prior to the point at which the nonair oxidation stream is introduced. NR 440.675(5)(e)2.b.b. The efficiency of the final recovery device is determined by measuring the TOC concentration using Method 18 at the inlet to the final recovery device after the introduction of any nonair oxidation vent stream and at the outlet of the final recovery device. NR 440.675(5)(e)2.c.c. This efficiency is applied to the TOC concentration measured prior to the final recovery device and prior to the introduction of the nonair oxidation stream to determine the concentration of TOC in the air oxidation stream from the final recovery device. This concentration of TOC is then used to perform the calculations outlined in subds. 5. and 6. NR 440.675(5)(e)3.3. The molar composition of the process vent stream shall be determined as follows: NR 440.675(5)(e)3.a.a. Method 18 to measure the concentration of TOC including those containing halogens. NR 440.675(5)(e)4.4. The volumetric flow rate shall be determined using Method 2, 2A, 2C or 2D, as appropriate. NR 440.675(5)(e)5.5. The net heating value of the vent stream shall be calculated using the following equation: where:
HT is the net heating value of the sample, MJ/scm (Btu/scf), where the net enthalpy per mole of vent stream is based on combustion at 25°C and 760 mm Hg (77°F and 30 in Hg), but the standard temperature for determining the volume corresponding to one mole is 20°C (68°F)
K1 is a constant, 1.740 x 10-7 (1/ppm)(g-mole/scm)(MJ/kcal) for metric units where standard temperature for (g-mole/scm) is 20°C, and 1.03 x 10-11 (1/ppm)(lb-mole/scf)(Btu/kcal) for English units where standard temperature for (lb-mole/scf) is 68°F