Role of non-ferrous coal minerals and by-product metallic wastes in coal liquefaction. Technical progress report, September 1-November 30, 1979
| Autor: | W.J. Huang, D. Garg, K. Shridharani, E.N. Givens, F.K. Schweighardt, C.W. Curtis, J.A. Guin |
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| Rok vydání: | 1979 |
| Předmět: |
Chemistry
business.industry Metallurgy Destructive distillation Inorganic chemistry technology industry and agriculture Coal mining Liquefaction respiratory system engineering.material Coal liquefaction complex mixtures respiratory tract diseases Fly ash otorhinolaryngologic diseases engineering Coal Pyrite business Pyrrhotite |
| DOI: | 10.2172/6387505 |
| Popis: | Results from screening studies showed that the pyrite samples separated from various coal seams had similar catalytic activity. The addition of all the pyrite samples to feed slurry increased conversion of coal and production of oil. A sample of fusinite was also tested for its liquefaction behavior with and without added pyrite. The addition of pyrite increased the conversion of fusinite and production of oil. These results show that pyrite catalyzes the conversion of fusinite and therefore improves overall coal conversion. Conversion of coal and oil production increased by impregnating coal with iron and molybdenum compounds. Coal conversion and oil production also increased with increasing concentration of both iron and molybdenum impregnated on coal. Addition of various transition metal sulfides increased coal conversion and oil production. Dramatic improvements were noted with nickel, vanadium, and tin sulfides. Addition of transition metal naphthenates produced mixed results; some of them improved coal conversion and others had no effect. The effect of metal concentration on coal conversion was also not clear. Deep cleaning of coal did not affect coal conversion, but it significantly reduced oil production. Addition of pyrite separated from coal to deep cleaned coal sample regained the oil production to the originalmore » value, i.e., oil produced from liquefaction of raw coal.Coal cleaned by oil agglomeration gave highest coal conversion and oil production. Basic and non-basic nitrogen compounds reduced the naphthalene hydrogenation activity of both Co-Mo-Al and sulfided Fe/sub 2/O/sub 3/. Sulfided Fe/sub 2/O/sub 3/ was inactive for denitrogenation of quinoline, and the reaction product mainly consisted of hydrogenated and hydrocracked quinoline. On the contrary, Co-Mo-Al was active for denitrogenation of quinoline, resulting in lower quinoline poisoning.« less |
| Databáze: | OpenAIRE |
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