Application of gaseous pyrolysis products of the waste cooking oil as coal flotation collector
Application of gaseous pyrolysis products of the waste cooking oil as coal flotation collector
复制标题
废食用油气态热解产物作为煤炭浮选捕收剂的应用
DOI：
10.1016/j.fuel.2018.11.056
复制
发表时间：
2019-03
期刊：
影响因子：
7.4
通讯作者：
Chao Wang
中科院分区：
文献类型：
--
作者：
Liang Shen;Fanfei Min;Lingyun Liu;Jinbo Zhu;Changguo Xue;Chuanchuan Cai;Wei Zhou;Chao Wang
化石燃料的枯竭、环境问题和化石燃料价格的急剧上涨使得开发替代和可再生产品以减少煤浮选过程中的油品消耗成为当务之急。本文提出了废食用油热解产物作为煤浮选捕收剂的可能性。采用气相色谱-质谱联用仪和热重分析法对餐饮废油的性质进行了研究。采用两种不同的方法将废食用油热解产物用作煤的浮选捕收剂。热重分析表明，废食用油样品的热解主要分为三个过程。废食用油热解产物具有较强的捕收能力和较好的选择性，可以替代柴油作为煤的浮选捕收剂。当DW-450 °C用量为1 kg/Mg时，可燃物回收率为79%，而柴油为68%。在废食用油热解产物的存在下，可以获得较好的浮选效果。随着废食用油热解温度的升高，浓缩物的可燃物回收率增加，而浓缩物的灰分含量呈下降趋势。
Fossil fuel depletion, environmental concerns, and steep hikes in the price of fossil fuels make it imperative to develop alternative and renewable products to decrease oil products consumption in coal flotation process. Pyrolysis product of the waste cooking oil was proposed as a potential coal flotation collector in this paper. The gas chromatograph-mass spectrometer test and thermogravimetric method were used to study the properties of the waste cooking oil. The pyrolysis product of the waste cooking oil was used as coal flotation collector in two different ways. Thermogravimetric analysis showed that the pyrolysis of the waste cooking oil sample was mainly divided into three processes. The waste cooking oil pyrolysis product possessed strong collecting ability and better selectivity, and can replace diesel as a coal flotation collector. 79% combustible matter recovery was obtained in the presence of 1 kg/Mg DW-450 °C dosage compared with that of 68% in the presence of diesel. Better flotation results can be obtained in the presence of gaseous pyrolysis products of the waste cooking oil. With the increase of pyrolysis temperature of the waste cooking oil, the combustible matter recovery of the concentrate is increasing, while the ash content of the concentrate is showing a decreasing trend.
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