Advanced High-Temperature, High-Pressure Transport Reactor Gasification Page: 43 of 147
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Table 20. TRDU Gasification Efficiency for P070
Test SUFCo SUFCo Illinois No. 6
Oxidant Air Oxygen Oxygen
Gasifier Temp., C 880 900 972
Coal/Sorbent Feed Rate, lb/hr 412 296 295
Air Flow, lb/hr 906 0 57
02 Flow, lb/hr 0 210 222
Steam Flow, lb/hr 287 454 483
Air:Coal Ratio, lb/lb 2.29 0 0.23
Steam:Coal Ratio, lb/lb 0.73 1.59 1.89
02:Coal Ratio, lb/lb 0.64 0.90 1.19
Recirculation Rate, lb/hr 4120 6740 4615
TRDU Throughout, lb/hr-ft2 5920 4253 3665
TRDU Throughout, MMBtu/hr-ft2 68.6 49.3 41.4
TRDU Riser Velocity, ft/s 57.1 57.2 61.4
Carbon Conversion
Solid Accountability 76 83.0 81.0
Gas Make 77 56 57.4
4.4.5 TRDU Gasification Test P071
Test campaign P071 was run during the June 9-16, 2002, time period. This test had 107 hours
of coal feed and 98 hours of gasification, including 18 hours of air-blown gasification and 80 hours
of enriched air- or full oxygen-blown gasification. This test utilized Tuscaloosa petroleum coke and
Prater Creek bituminous coal as feedstocks, with the petcoke sized to -30 mesh and the Prater Creek
bituminous coal sized to the standard - 10-mesh particle size. This test was ended prematurely when
another hot spot on the riser vessel wall was detected. This hot spot was the result of too short of a
ceramic plug being inserted into a downward pointing secondary air nozzle in the riser. Over the
years of testing at the EERC, the high-velocity bed material was able to start eroding the soft
insulating refractory behind the hard face refractory, creating a significant hollow pocket that would
fill with hot-bed material. After this test, the EERC performed a through inspection of all the TRDU
sections, paying particular attention to all nozzle penetrations. Any necessary refractory repairs were
made, and either metal liner or ceramic plugs of the proper length were installed such that high-
velocity bed material could not impact the softer insulating refractory. Tables 21 and 22 show the fuel
gas compositions and the operating conditions achieved for these tests. All steady-state periods for
this test campaign are given in Appendix A.31
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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/m1/43/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.