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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: The Potential of In Situ Lignite Gasification in Texas
By
Thomas
F. Edgar
Department of Chemical Engineering,
University of Texas, Austin, Texas 78712
The technical and economic feasibility of utilizing in situ
gasification to recover energy from deep basin Texas lignite has
been under investigation during the past three years at UT-Austin.
The low Btu gas produced can be utilized for production of electric
power or as a chemical feedstock. The economic and technical
factors which make the in situ process attractive have been
identified. Potential problem areas have also been evaluated. A
discussion of previous operating experience in the U.S. and Russia
will be given. Since Texas lignite is a shrinking coal, a three-step
conversion process is envisioned: (1) drying; (2) backward burning; (3) forward burning. Steps (1) and (2) are permeability enhancement
(seam preparation) processes, while the final step is the major gas
production step. Laboratory work is presently underway to determine
which geological, physical, and chemical conditions in Texas
are conducive to economic application of in situ gasification, and to
develop a design and operating basis for eventual field testing. End_of_Record - Last_Page 5---------------