This section applies beginning no later than the compliance dates specified in § 63.2445(i) . In order to demonstrate compliance with the emission limits and work practice standards specified in Tables 1, 2, and 4 to this subpart for process vents and storage tanks in ethylene oxide service, you must meet the requirements specified in paragraphs (a) through (c) of this section. In order to demonstrate compliance with the requirements specified in Table 6 to this subpart for equipment in ethylene oxide service, you must meet the requirements specified in paragraphs (d) and (e) of this section.
EEtO,inlet = K CEtO,inlet MEtO Qinlet (Eq. 1)
EEtO,outlet = K CEtO,outlet MEtO Qoutlet (Eq. 2)
Where:
EEtO,inlet, EEtO,outlet = Mass rate of ethylene oxide at the inlet and outlet of the control device, respectively, kilogram per hour.
CEtO,inlet, CEtO,outlet = Concentration of ethylene oxide in the gas stream at the inlet and outlet of the control device, respectively, dry basis, parts per million by volume.
MEtO = Molecular weight of ethylene oxide, 44.05 grams per gram-mole.
Qinlet, Qoutlet = Flow rate of the gas stream at the inlet and outlet of the control device, respectively, dry standard cubic meter per minute.
K = Constant, 2.494 * 10-6 (parts per million)-1 (gram-mole per standard cubic meter) (kilogram per gram) (minutes per hour), where standard temperature (gram-mole per standard cubic meter) is 20 °C.
Percent reduction = (EEtO,inlet-EEtO,outlet)/EEtO,inlet * 100 (Eq. 3)
Where:
EEtO,inlet, EEtO,outlet = Mass rate of ethylene oxide at the inlet and outlet of the control device, respectively, kilogram per hour, calculated using Equations 1 and 2 to paragraph (a)(2)(iii) of this section.
40 C.F.R. §63.2493