Liquefaction of coals using ultra-fine particle, unsupported catalysts: In situ generation by rapid expansion of supercritical fluid solutions Page: 4 of 25
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particles or coal derived liquids) will be accomplished by allowing the post-
expansion, ultra-fine catalyst particle laden gas stream to come into intimate
contact with pulverized coal or coal-liquid droplets. Liquefaction activity
testing using the catalyst impregnated coal materials will be performed to
determine the influence ultra-fine catalyst particles have on coal solubiliza-
In order to demonstrate ultra-fine catalyst particle generation, optimi-
zation of catalyst particle characteristics, impregnation of coal materials
with ultra-fine catalyst particles, and performance of activity testing on
resulting catalyst impregnated coal samples, a twelve-month program involving
analytical and experimental efforts is being conducted. This is a report on
the technical progress made towards the above goals during the first quarter
of this program.
The technical progress made during the first quarter of this program
fell short of that initially planned. This was due to prior commitments that
this project's Program Manager had to attend to before proceeding with this
program. The main effort applied during this quarter was preparing and
delivering the Program Management Report, which was submitted to DOE on
October 25, 1990, and the Project Work Plan (Task 1), which was submitted to
DOE on November 30, 1990. Although preparation of these reports consumed most
of the time dedicated to this program during the first quarter, some technical
progress was achieved, which is summarized in the remainder of this section.
The design of the ultra-fine catalyst generator began by defining system
elements and defining specifications for the elements. The elements fall
under two principal areas, namely: 1) a supercritical flow system; and 2) a
post-expansion flow system for particle collection and coal material impregna-
tion. Design efforts in the first quarter of this program focused on the
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Liquefaction of coals using ultra-fine particle, unsupported catalysts: In situ generation by rapid expansion of supercritical fluid solutions, report, August 1, 1991; United States. (https://digital.library.unt.edu/ark:/67531/metadc1057519/m1/4/: accessed April 22, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.