API Publ 4720-2002 pdf free download
API Publ 4720-2002 pdf free download.Comparison of API and EPA Toxic Air Pollutant Emission Factors for Combustion Sources.
Table A-3 compares the EPA and the API emission factor data for crude oil/pipeline oil combustion by boilers, process heaters, and steam generators. The API factors were obtained from PATEF 2.02. There are no EPA emission factors in AP- 42 for combustion of this type of fuel. Description of Sources Tested The PATEF factors were calculated from tests of a single pipeline oil-fired process heater and three crude oil-fired steam generators. Identification and Explanation of Gaps and Inconsistencies • Dioxins/Furans. The PATEF emission factors are based on only one dioxin/furan test. Measured values in most cases were below or near the detection limit. • Metals. The PATEF emission factors are based on 2-4 tests of unknown quality. • Polycyclic Compounds. The PATEF emission factors are based on 1-4 tests. polycyclic compound emissions are very low, on the order of 10-6 to 10-8 lb/MMBtu. INTERNAL COMBUSTION, LARGE DIESEL-FIRED ENGINES Table A-4 compares the EPA and the API emission factor data for large (> 600 hp) reciprocating internal combustion engines. The EPA factors were obtained from AP-42 Section 3.4 – Large Stationary Diesel and All Stationary Dual-fuel Engines (dated 10/96). The API factors were obtained from PATEF 2.02. Description of Sources Tested The PATEF emission factors were calculated from a single test of a > 650 hp engine with stack oxygen level less than 13%. The EPA emission factors appear to be based on this same test data. Identification and Explanation of Gaps and Inconsistencies • Dioxins/Furans. There are no emission factors for dioxins/furans in either the EPA or the API databases. • Metals. There are no emission factors for metals in either the EPA or the API databases. • Polycyclic Compounds. The PATEF and AP-42 emission factors are identical and based on the test of a single engine. • SVOC and VOC.
Description of Sources Tested The PATEF emission factors were calculated from tests of two small (> 650 hp) engines with stack oxygen level greater than 13%. The EPA emission factors appear to be based on this same test data. Identification and Explanation of Gaps and Inconsistencies • Dioxins/Furans. There are no emission factors for dioxins/furans in either the EPA or the API databases. • Metals. There are no emission factors for metals in either the EPA or the API databases. • Polycyclic Compounds. The PATEF and AP-42 emission factors are identical and based on the tests of the two engines. • SVOC and VOC. The PATEF and AP-42 emission factors are identical and based on the tests of the two engines. INTERNAL COMBUSTION, GAS-FIRED 2-STROKE LEAN-BURN ENGINES Table A-6 compares the EPA and the API emission factor data for gas-fired, 2-stroke, lean-burn, reciprocating internal combustion engines. The EPA factors were obtained from AP-42 Section 3.2 – Natural Gas-fired Reciprocating Engines (dated 7/00). The API factors were obtained from PATEF 2.02. Description of Sources Tested The PATEF factors were calculated using data from two test data sets. The EPA factors are based on 18 test reports containing 120 emission tests. These test data were gathered over the past 5 years under the ICCR program, EPA- sponsored testing at Colorado State University, and GRI-sponsored testing. Identification and Explanation of Gaps and Inconsistencies • Dioxins/Furans. There are no emission factors for dioxins/furans in either the EPA or the API databases. • Metals. There are no emission factors for metals in either the EPA or the API databases. • Polycyclic Compounds. The PATEF emission factors are based on a single test, while the EPA factors are based on from 1 to 7 tests. For the most part, there is reasonably good agreement between the two data sets. • SVOC and VOC. The PATEF emission factors are based on one or two tests, while the EPA factors are based on as many as 58 tests.
