Integrated methods for production of clean char and its combustion properties. [Quarterly] technical report, March 1, 1993--May 31, 1993 [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1993.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 9 pages : digital, PDF file
- Additional Creators:
- United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information
- An integrated method consisting of physical coal cleaning, mild gasification (MG) and low temperature oxidation (LTO) is proposed to produce chars with SO₂ emissions at least 50% lower than those of their parent coals. MG and char desulfurization studies are conducted in both a batch fluidized-bed reactor (FBR) and in a continuous rotary tube kiln (RTK). Combustion properties and ash deposition behaviors of desulfurized chars are determined at the US EPA in a 14 kill pilotscale combustor and at UNDEERC in a drop tube furnace (DTF). This project is cost-shared with the US EPA and the US DOE through UNDEERC. During the first year of this two year project, six coals from the IBC sample program (IBC-101, 102, 104, 105, 106 and 109) were studied. Under non-optimized conditions in the FBR, desulfurized chars were made with SO₂ emissions 60--71% lower than the parent coals, depending on the coal. Chars prepared from four of the six coals had SO₂ emissions less than 2.5 lbs SO₂/MMBtu. Under optimum conditions, SO₂ emissions of one of the coals were reduced nearly 67%, from 4.60 to 1.49 lbs SO₂/MMBtu. MG reduced the chlorine content of one coal 93%.
- Published through SciTech Connect.
DeBarr, J.A.; Benson, S.A.; Gullett, B.K.; Rostam-Abadi, M.
Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
- Type of Report and Period Covered Note:
- Quarterly; 04/01/1993 - 06/30/1993
- Funding Information:
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