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High Pressure Coal Combuston Kinetics Project Quarterly Report for July-September 2002.

DE2004828936

Publication Date	2002
Personal Author	Guenther, C.
Page Count	16
Abstract	The modifications to the SRT-RCFR facility described in the June report were completed. As a result of these changes, the furnace hot zone was increased in length from 7 cm to 15.5 cm. The injector region of the furnace, providing entrainment and sheath flows, was unchanged, while the flow path from the exit of the furnace to the sample collection section was shortened by approximately 10 cm. The modified facility was used to resume testing of Pittsburgh No. 8 coal at 10 atm. The first goal was to confirm that the facility now provides true secondary pyrolysis test conditions. That is, the tar product should be completely converted to soot even in the absence of oxygen in the gas stream. We have now performed four tests with pure argon carrier gas, and have consistently observed voluminous soot product with little or no evidence of tar. Thus, this objective was met. The clogging problems for Pittsburgh No. 8 coal under secondary pyrolysis test conditions may preclude achieving this data point. In that case, we will make measurements under oxidizing conditions, which are expected to eliminate the clogging, and to gradually reduce the oxygen content to the point where product yields can reliably be extrapolated to the zero oxygen case.
Keywords	Coal Combustion kinetics Furnaces Progress report Modifications Pyrolysis Soot Tar Oxygen Testing Entrainment SRT-RCFR facility
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Fluent, Inc., Lebanon, NH.; Foster Wheeler Corp., Livingston, NJ.; Department of Energy, Washington, DC.; SRI International, Menlo Park, CA.; National Energy Technology Lab., Pittsburgh, PA.
Supplemental Notes	Prepared in cooperation with Foster Wheeler Corp., Livingston, NJ. and SRI International, Menlo Park, CA. Sponsored by National Energy Technology Lab., Pittsburgh, PA. and Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200510

High Pressure Coal Combuston Kinetics Project Quarterly Report for July-September 2002.

High Pressure Coal Combuston Kinetics Project Quarterly Report for July-September 2002.
DE2004828936

Publication Date	2002
Personal Author	Guenther, C.
Page Count	16
Abstract	The modifications to the SRT-RCFR facility described in the June report were completed. As a result of these changes, the furnace hot zone was increased in length from 7 cm to 15.5 cm. The injector region of the furnace, providing entrainment and sheath flows, was unchanged, while the flow path from the exit of the furnace to the sample collection section was shortened by approximately 10 cm. The modified facility was used to resume testing of Pittsburgh No. 8 coal at 10 atm. The first goal was to confirm that the facility now provides true secondary pyrolysis test conditions. That is, the tar product should be completely converted to soot even in the absence of oxygen in the gas stream. We have now performed four tests with pure argon carrier gas, and have consistently observed voluminous soot product with little or no evidence of tar. Thus, this objective was met. The clogging problems for Pittsburgh No. 8 coal under secondary pyrolysis test conditions may preclude achieving this data point. In that case, we will make measurements under oxidizing conditions, which are expected to eliminate the clogging, and to gradually reduce the oxygen content to the point where product yields can reliably be extrapolated to the zero oxygen case.
Keywords	Coal Combustion kinetics Furnaces Progress report Modifications Pyrolysis Soot Tar Oxygen Testing Entrainment SRT-RCFR facility
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Fluent, Inc., Lebanon, NH.; Foster Wheeler Corp., Livingston, NJ.; Department of Energy, Washington, DC.; SRI International, Menlo Park, CA.; National Energy Technology Lab., Pittsburgh, PA.
Supplemental Notes	Prepared in cooperation with Foster Wheeler Corp., Livingston, NJ. and SRI International, Menlo Park, CA. Sponsored by National Energy Technology Lab., Pittsburgh, PA. and Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200510