Fossil energy program progress report for March 1978
During March we treated Illinois No. 6 coal with aqueous Na/sub 2/CO/sub 3/ and CaO at 80/sup 0/C and atmospheric pressure for use in hydrocarbonization run HC-26. The run was carried out at a coal feed rate of 8.7 lbs/hr and at 1055/sup 0/F and 300 psig with no difficulties. In support of in situ gasification, the current series of bituminous coal tests was concluded and a series of block pyrolysis tests using lignite was started. In contrast to the behavior observed with bituminous coal, drying of the lignite block occurred by a shrinking-core mechanism. The fracture toughness of 2/sup 1///sub 4/ Cr-1 Mo in. thick sections suitable for large coal conversion systems is being explored for material in the as-fabricated condition in our pressure vessel and piping materials work. Preparation of a facility for environmental exposure of materials is nearing completion. Two topical reports on ceramics and cermets are now in reproduction. In our welding and cladding program, the effort to develop the submerged arc and gas metal-arc welding methods for overlaying 2/sup 1///sub 4/ Cr-1 Mo steel is continuing. The nickel content of the deposits appears to be a major factor that affects cracking of the weld overlay deposits. In our experimental work on fireside corrosion, data for a 1000 hr exposure of type 304, 310, and 316 stainless steels, Alloy 600, and Alloy 800 heat exchanger tubes exposed in the FluiDyne Atmospheric Fluidized Bed Combustor are presented for times to 1500 hrs. Work continued on preparation of the second and third issues of the Synthetic Fuels Process Research Digest. In our work on surveys of industrial coal conversion equipment capabilities, information is being assembled concerning use of critical let-down valves, expansion joints, and mechanical connectors in demonstration plants. In our work on magnetic beneficiation of dry pulverized coal, testing of the handling characteristics and magnetic susceptability of coal from a power plant pulverizer continued.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 7050058
- Report Number(s):
- ORNL/TM-6385
- Country of Publication:
- United States
- Language:
- English
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