期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 154, 期 -, 页码 177-182出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2015.02.030
关键词
Oily sludge; Pyrolysis; Fluidized bed; Energy; Iron; Recovery
资金
- National Natural Science Foundation of China [50806053]
- Foundation of State Key Laboratory of Coal Combustion [FSKLCC1113]
In the steel industry, about 0.86 ton of oily sludge is produced for every 1000 tons of rolling steel. Due to the adverse impact on human health and the environment, oily sludge is designated as a hazardous waste in the Resource Conservation and Recovery Act (RCRT). In this paper, the pyrolysis treatment of oily sludge is studied in a fluidized bed reactor at a temperature range of 400-600 degrees C. During oily sludge pyrolysis, a maximum oil yield of 59.2% and a minimum energy loss of 19.0% are achieved at 500 degrees C. The energy consumption of treating 1 kg oily sludge is only 2.4-2.9 MJ. At the same time, the energy of produced oil, gas and solid residue are 20.8, 6.32, and 0.83 MJ, respectively. In particular, it is found that the solid residue contains more than 42% iron oxide, which can be used as the raw material for iron production. Thus, the simultaneous recovery of energy and iron from oil sludge by pyrolysis is feasible. (C) 2015 Elsevier Ltd. All rights reserved.
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