Integration of coal pyrolysis process with iron ore reduction: Reduction behaviors of iron ore with benzene-containing coal pyrolysis gas as a reducing agent

Li, Xin; Huang, Hui; Li, Songgeng; He, Lu; Cui, Li

doi:10.1016/j.cjche.2015.12.020

Cited by 13 publications

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References 22 publications

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“…Research indicates that regeneration by burning the coke does not seem to completely restore their performance . The use of natural iron ore as a catalyst might not necessarily be regenerated and reactivated because the deactivated iron ore can be recycled as the feedstock of iron- and steel-making industries. − Moreover, iron ores are easily available and cheap. In view of the above-mentioned fact, natural iron ore is chosen for investigation in this work.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Cracking of Pyrolytic Vapors of Low-Rank Coal over Limonite Ore

Lin

2016

Energy Fuels

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Low-grade natural iron ore, limonite, is proposed as an inexpensive catalyst to increase the light liquid production from coal pyrolysis. Experiments were conducted at a pyrolyzer combined with gas chromatography/mass spectrometry (Py− GC/MS). It is found that limonite favors the formation of light aromatic hydrocarbons, while the aliphatics and oxygenated compounds in tar are significantly reduced. Tests with model compounds (C 19 alkane and o-cresol) indicate that the increased light aromatics could result from the conversions of either oxygenated compounds or aliphatics promoted by limonite. Gaseous products are determined with online gas chromatography (GC). A strong correlation between CO x and light aromatics is revealed in the catalytic pyrolysis process, indicating that CO x could be seen as an index of light aromatic formation. There is a maximum value for the yield of liquids when the temperature is increased, which is quite different from the tests without limonite. It is postulated that pyrolytic water is decreased with the temperature because the total tar yield exhibits an increasing trend.

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