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tests with the high-sodium Freedom lignite and the high-sodium Australian brown coals. All-steady
state data are given in Appendix A.
4.4.10 TRDU Gasification Test P076
TRDU Test P076 tested as-received Wyodak subbituminoous coals from the Belle Ayr Mine
over the period of June 1, 2004, through June 8, 2004. This test generated 180 hours of coal feed and
176 hours of gasification, including 101 hours of air-blown gasification and 75 hours oxygen-blown
gasification. Tables 34 and 35 summarize some results from the Wyodak tests. Wyodak was selected
for testing based on its excellent performance in the previous TRDU tests and in testing at the PSDF.
These tests were conducted primarily to look at establishing a baseline for mercury emissions and
measuring the performance of various Hg sorbents.
4.4.11 TRDU Gasification Test P077
TRDU Test P077 tested raw and washed subbituminous coals from India over the week of
September 21, 2004, through September 25, 2004. This test generated 82 hours of coal feed and
72 hours of gasification, including 60 hours of air-blown gasification and 13 hours oxygen-blown
gasification. Table 36 summarizes the range of operating conditions and results achieved with both
Wyodak subbituminous coal and the high-ash Indian subbituminous coal tests conducted recently.
Wyodak was selected as the comparison coal since it is the baseline coal for both the EERC and
PSDF transport reactors and it is the closest in rank to the Indian coal tested.
Tables 37 and 38 summarize the identified steady-state periods which had the best performance
for both the recent Wyodak and high-ash Indian coal tests. Typically, the best performance is a
balance of fuel gas heating value and carbon conversion; however, with the low fuel gas heating
values being achieved with the high-ash Indian coals, more of an emphasis was placed on fuel gas
heating value at the expense of carbon conversion.
Table 33. XRFA of Selected Samples from Gasification of High-Sodium Low-Rank
Coals
Element, Freedom Freedom Loy Yang Loy Yang Lochiel Lochiel
wt% SP FV SP FV SP FV
Si 16.4 10.3 88.6 47.5 79.2 10.7
Al 4.9 6.4 4.3 5.4 4.2 6.2
Fe 5.1 4.6 2.1 6.4 2.3 6.4
Ti 0.3 0.4 0.1 0.3 0.2 0.7
P 0.1 0.2 0 0.1 0 0
Ca 42.7 47.1 2.4 13.3 7.2 30.6
Mg 25.0 26.5 0.8 12.5 2.3 25.3
Na 3.2 2.8 1.5 6.6 3.9 6.7
K 0.9 0.5 0.2 1.9 0.1 0.6
S 1.4 1.2 0 5.9 0 12.7
Total 100 100 100 99.9 99.4 99.9
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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/m1/52/: accessed July 17, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.