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Show 14 STACK #2 #1 #3 PORT REGENERATOR • (exhaust side) FLUE TUNNEL Figure 7. EMISSIONS MEASUREMENT LOCATION • 02, CO, C02, and in the centearn do fN thOex p woretr• e u msienags ucorendti ninu othues setmacikss, iionn t hmeo fnluiteo,r sin. tThhee t ogpa so sfa tmhep lree gweanse rator, conditioned by passing it through a heated permapure dryer to remove the moisture and then through millipore filters to remove particulates. • Generally, 02, CO, and NOx concentrations in the top of the regenerator were recorded continuously during each test using a chart recorder. Similarly, the primary combustion air and the exhaust gas temperatures were also recorded on a chart recorder. The results from the tests carried out on the Huntington Park furnace are summarized in Table 1 for both side-of-port and underport firing. The majority of the tests were carried out with underport firing, which was found to be the preferred firing mode in terms of the NOx levels achieved. Consequently, underport firing results are presented and discussed in more detail here. The exit gas composition was measured in the port for side-of-port firing and in the top of the regenerator for underport firing. The data presented in the table show the following: 1. With air staging, NOx was reduced by 350/0 for side-of-port firing and by 44% to 55% for underport firing. 2. Staging allowed the furnace to be operated with a lower overall stoichiometric ratio, although this resulted in an increase is CO levels in the top of the regenerator. As discussed later, these high CO levels, however, did not translate into higher CO in the stack, implying uncontrolled combustion within the regenerator. This location was selected based on results of traversing the ports that showed no significant variations in exhaust gas temperature or composition across the ports. (P-002\1 194Maui.doc |