Investigation of mineral transformations and ash deposition during staged combustion. Quarterly technical progress report, April 1, 1995--June 30, 1995 | Zendy

John N. Harb | Zendy

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Investigation of mineral transformations and ash deposition during staged combustion. Quarterly technical progress report, April 1, 1995--June 30, 1995

Author(s) -

John N. Harb

Publication year - 1995

Publication title -

osti oai (u.s. department of energy office of scientific and technical information)

Language(s) - English

Resource type - Reports

DOI - 10.2172/225024

Subject(s) - coal , quarter (canadian coin) , combustion , air preheater , sampling (signal processing) , mineralogy , coal combustion products , deposition (geology) , environmental science , waste management , metallurgy , engineering , materials science , chemistry , geology , archaeology , geography , paleontology , electrical engineering , organic chemistry , filter (signal processing) , sediment

Progress during the seventh quarter of a three-year study was made in four task areas: (1) analysis of coals, (2) improvements to the reactor system, (3) parametric testing of the target coals, and (4) analysis of samples from the combustion tests. A problem with our analysis system was discovered and corrected. Recent analyses of the Pittsburgh {number_sign}8 coal (after repulverizing) were redone and results are reported. A new design of the deposit probe and an air preheater were added this quarter. Parametric testing of the Pittsburgh {number_sign}8 coal continued this quarter. Analytical results from these tests show sulfur release and iron transformations as a function of test conditions and sampling location. Deposit samples were also collected from the Pittsburgh coal at three different stoichiometric ratios. Operating conditions appeared to have a significant effect on deposit formation. Finally, specific tasks for the next quarter have been identified and reported

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