Section 439.098. Methods and procedures for parametric testing of NOx

  emissions pursuant to an acid rain program alternative NO x emission limitation.

(1)  The owner or operator of an affected unit subject to the requirements of s. NR 409.065 may use the following tests as a basis for the report required by s. NR 409.065 (6) (e) 7.

(a) An ultimate analysis of coal conducted according to ASTM D 3176-89, incorporated by reference in s. NR 484.10 (44) .

(b) A proximate analysis of coal conducted according to ASTM D 3172-89, incorporated by reference in s. NR 484.10 (41m) .

(c) A measurement of the coal mass flow rate to each individual burner using ASME Performance Test Code 4.2-1969 (1997) or ISO 9931 (1991), incorporated by reference in s. NR 484.11 (6) and (8) .

(2)  The owner or operator of an affected unit subject to the requirements of s. NR 409.065 may measure and record the actual NO x emission rate in accordance with the requirements of s. NR 409.065 while varying the following parameters where possible to determine their effects on the emissions of NO x from the affected boiler:

(a) Excess air levels.

(b) Settings of burners or coal and air nozzles, including tilt and yaw, or swirl.

(c) For tangentially fired boilers, distribution of combustion air within the NO x emission control system.

(d) Coal mass flow rates to each individual burner.

(e) Coal-to-primary air ratio (based on pound per hour) for each burner, the average coal-to-primary air ratio for all burners, and the deviations of individual burners' coal-to-primary air ratios from the average value.

(f) If the boiler uses varying types of coal, the type of coal; in this case the owner or operator shall provide the results of proximate and ultimate analyses of each type of as-fired coal.

(3)  In performing the tests specified in sub. (1) , the owner or operator shall begin the tests using the equipment settings for which the NO x emission control system was designed to meet the NO x emission rate guaranteed by the primary NO x emission control system vendor. These results constitute the baseline controlled condition.

(4)  After establishing the baseline controlled condition under sub. (3) , the owner or operator may do any of the following:

(a) Change excess air levels $ 5% from the baseline controlled condition to determine the effects on emissions of NO x , by providing a minimum of 3 readings.

(b) For tangentially fired boilers, change the distribution of combustion air within the NO x emission control system to determine the effects on NO x emissions by providing a minimum of 3 readings, one with the minimum, one with the baseline, and one with the maximum amounts of staged combustion air.

(c) Show that the combustion process within the boiler is optimized.

History: Cr. Register, November, 1999, No. 527 , eff. 12-1-99; correction in (1) (c) made under s. 13.93 (2m) (b) 7., Stats., Register August 2001 No. 548 .

Note

For example, with a baseline reading of 20% excess air, excess air levels will be changed to 19% and 21%. Microsoft Windows NT 6.1.7601 Service Pack 1 For example, boiler optimization can mean that the burners are balanced. Microsoft Windows NT 6.1.7601 Service Pack 1