NR 440.26(7)(i)6.6. All testing shall be performed at the same location. Where the gases discharged by the fluid catalytic cracking unit catalyst regenerator pass through an incinerator-waste heat boiler in which auxiliary or supplemental gaseous, liquid or solid fossil fuel is burned, testing shall be conducted at a point between the regenerator outlet and the incinerator-waste heat boiler. An alternative sampling location after the waste heat boiler may be used if alternative coke burn-off rate equations, and, if requested, auxiliary/supplemental fuel SOx credits, have been submitted to and approved by the department prior to sampling. NR 440.26(7)(i)7.7. Coke burn-off rate shall be determined using the procedures specified under par. (b) 3., unless subd. 6. applies. NR 440.26(7)(i)8.8. Calculate the concentration of sulfur oxides as sulfur dioxide using equation 8-3 in Section 6.5 of Method 8 to calculate and report the total concentration of sulfur oxides as sulfur dioxide . NR 440.26(7)(i)9.9. Sulfur oxides emission rate calculated as sulfur dioxide shall be determined for each test run by the following equation: where:
is the sulfur oxides emission rate calculated as sulfur dioxide, kg/hr (lb/hr) is the sulfur oxides emission concentration calculated as sulfur dioxide, g/dscm (gr/dscf) Qsd is the dry volumetric stack gas flow rate corrected to standard conditions, dscm/hr (dscf/hr)
K is a conversion factor, 1,000 g/kg (7,000 gr/lb)
NR 440.26(7)(i)10.10. Sulfur oxides emissions calculated as sulfur dioxide shall be determined for each test run by the following equation: where:
is the sulfur oxides emissions calculated as kg sulfur dioxide per Mg (lb/ton) coke burn-off is the sulfur oxides emission rate calculated as sulfur dioxide, kg/hr (lb/hr) Rc is the coke burn-off rate, Mg/hr (ton/hr)
NR 440.26(7)(i)11.11. Calculate the 7-day average sulfur oxides emission rate as sulfur dioxide per Mg (ton) of coke burn-off by dividing the sum of the individual daily rates by the number of daily rates summed. NR 440.26(7)(i)12.12. An owner or operator may, upon approval by the administrator, use an alternative method for determining compliance with sub. (5) (b) 2., as provided in s. NR 440.08 (2). Any requests for approval shall include data to demonstrate to the administrator that the alternative method would produce results adequate for the determination of compliance. NR 440.26(7)(j)(j) For the purpose of determining compliance with sub. (5) (b) 3., the following analytical methods and calculation procedures shall be used: NR 440.26(7)(j)2.2. Fresh feed samples shall be analyzed separately by using any one of the following applicable analytical test methods: ASTM D129-00, ASTM D1552-01, ASTM D2622-98 or ASTM D1266-98. These methods are incorporated by reference in s. NR 440.17 (2) (a) 8., 20., 34. and 18., respectively. The applicable range of some of these ASTM methods is not adequate to measure the levels of sulfur in some fresh feed samples. Dilution of samples prior to analysis with verification of the dilution ratio is acceptable upon prior approval of the department. NR 440.26(7)(j)3.3. If a fresh feed sample cannot be collected at a single location, then the fresh feed sulfur content shall be determined as follows: NR 440.26(7)(j)3.a.a. Individual samples shall be collected once per 8-hour period for each separate fresh feed stream charged directly into the riser or reactor of the fluid catalytic cracking unit. For each sample location the fresh feed volumetric flow rate at the time of collecting the fresh feed sample shall be measured and recorded. The same method for measuring volumetric flow rate shall be used at all locations. NR 440.26(7)(j)3.b.b. Each fresh feed sample shall be analyzed separately using the methods specified under subd. 2. NR 440.26(7)(j)3.c.c. Fresh feed sulfur content shall be calculated for each 8-hour period using the following equation: where:
Sf is the fresh feed sulfur content expressed in percent by weight of fresh feed
n is the number of separate fresh feed streams charged directly to the riser or reactor of the fluid catalytic cracking unit
Qf is the total volumetric flow rate of fresh feed charged to the fluid catalytic cracking unit
Si is the fresh feed sulfur content expressed in percent by weight of fresh feed for the “ith” sampling location