Advanced High-Temperature, High-Pressure Transport Reactor Gasification Page: 33 of 147
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EERC 523852.CDR
Figure 6. Drawing of seal pot loop seal on bottom of the dipleg.
outside of the secondary air to complete the combustion process. The flame safety system is set to
add supplemental natural gas in order to maintain thermal oxidizer temperature; however, most tests
have shown that the thermal oxidizer can be operated without any supplemental fuel. All extra air
from the blower is added to the stack flue gas to cool the gas before it is discharged out the stack.
No baghouse or particulate collection device is included downstream of the thermal oxidizer. Since
there is no backup particulate control, the thermal oxidizer was installed such that the fuel gas flow
can be diverted from the thermal oxidizer and sent to the quench system should a major filter failure
result in a high dust loading to the thermal oxidizer. Collection of all the gaseous flow rates and gas
emissions data including moisture concentration allows a material balance around the thermal
oxidizer to be completed. This allows another measure of carbon conversion, sulfur retention, and
fuel gas heating value to be calculated from the data collected.
4.4 Oxygen-Blown Results Utilizing the TRDU L-Valve Modification
In total, ten test campaigns have been conducted under enriched air or full oxygen-blown
conditions. During these tests, 1515 hours of coal feed with 660 hours of air-blown gasification and21
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Swanson, Michael L. Advanced High-Temperature, High-Pressure Transport Reactor Gasification, report, August 30, 2005; [Grand Forks, North Dakota]. (https://digital.library.unt.edu/ark:/67531/metadc889538/m1/33/?rotate=90: accessed July 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.