API PUBL 4712:2001 pdf download

API PUBL 4712:2001 pdf download.Characterization of Fine Particulate Emission Factors and Speciation Profiles from Stationary Petroleum Industry Combustion Sources.
SULFUR DIOXIDE (SO2)
A modified version of SCAQMD Method 6.1 was used to measure SO2 in the stack gas due to expected low concentrations. Flue gas was extracted non-isokinetically and passed through impingers containing hydrogen peroxide. Figure 3-3 shows a schematic of the Method 6 sampling train.
IN-STACK METHOD TESTS
Total particulate. PM 10 and PM2.5 filterable at stack temperature were determined using in- stack methods. CPM. defined as the material collected in chilled impingers. also was measured for the in-stack samples.
In-Stack Total Filterable PM. PMIO and PM2.5
Two in-stack cyclones followed by an in-stack filter (Figure 3-4) were used to measure total particulate and particulate matter with nominal aerodynamic diameters less than or equal to 10 im (PM 10) and 2.5 im (PM2.5). EPA Method 201A, modified to accommodate the second cyclone, was used following the constant-rate sampling procedure. Sampling time was six hours for each of the three runs. The sample recovery field procedure is surnmari,ed in Figure 3-5. Sampling was perftwmed as published except Ibr the following modilications and clarifications:
• A PM 10 cyclone and a PM2.5 cyclone (Andersen Model Case-PM 10 and Case-PM2.5) were attached in series to the filter inlet. Sample recovery procedures were modified accordingly:
• The sample was collected from a single traverse point near the center of the stack to preserve the integrity of the dilution tunnel method comparison. It was assumed that any particulate present was small enough to mix aerodynamically in the same manner as a gas: therefore, the magnitude of the particle concentration profile was assumed to be no greater than the gas concentration profile. Quart, filters were used. The filters were preconditioned in the same manner as those used in the dilution tunnel, as described below: and
• A modified filter assembly was employed in an effort to improve the precision of the gravimetric analysis for low particulate concentration. An o-ring, a filter and a filter support were all placed together in an aluminum foil pouch and weighed as a unit. Post-test all three components were recovered together into the same foil pouch to prevent negative bias due to filter breakage.