不同控制模式下含油污泥的微波热解。
Microwave pyrolysis of oily sludge under different control modes.
机构信息
Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
Beijing Advanced Innovation Center for Soft Matter Science and Engineering, State Key Laboratory of Organic-Inorganic Composites, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
出版信息
J Hazard Mater. 2021 Aug 15;416:125887. doi: 10.1016/j.jhazmat.2021.125887. Epub 2021 Apr 15.
The effects of temperature and power on product distribution and characteristics of oily sludge (OS) pyrolysis were investigated in a microwave reactor. The maximum oil yield was 72.55 wt% at 550 °C and 71.47 wt% at 800 W, respectively. X-ray photoelectron spectroscopy (XPS) indicated that C-C and C-O were the main forms of carbon in OS char (OC). The sulfur (S) content in OC increased as the temperature/power rose, implying that S might exist in the form of inorganics or OC had S retention ability. In temperature control mode, the changes of functional groups on OC surface were more sensitive. The maximum hydrocarbon content in oil was 14.56% at 350 °C and 13.40% at 900 W, respectively. The contents of oxygenated compounds and heterocycles in oil from temperature control mode were higher. The CO yield increased with increasing temperature/power, reaching the maximum of 9.60 wt% at 650 °C and 7.75 wt% at 900 W, respectively. Compared with power control mode, it seemed that more heavy metals (HMs) were retained in OC in temperature control mode. The E of HMs were at the clean level and RI indicated the HMs in OC had a low environmental risk.
采用微波反应器研究了温度和功率对油泥（OS）热解产物分布和特性的影响。在 550°C 和 800 W 时，最大油产率分别为 72.55wt%和 71.47wt%。X 射线光电子能谱（XPS）表明，OS 焦（OC）中碳的主要存在形式为 C-C 和 C-O。随着温度/功率的升高，OC 中 S 的含量增加，表明 S 可能以无机物或 OC 具有 S 保留能力的形式存在。在温度控制模式下，OC 表面官能团的变化更为敏感。在 350°C 和 900 W 时，油中最大的烃含量分别为 14.56%和 13.40%。温度控制模式下油中含氧化合物和杂环化合物的含量较高。CO 的产率随温度/功率的升高而增加，在 650°C 和 900 W 时分别达到 9.60wt%和 7.75wt%的最大值。与功率控制模式相比，似乎在温度控制模式下 OC 中保留了更多的重金属（HM）。HM 的 E 值处于清洁水平，RI 表明 OC 中的 HM 具有较低的环境风险。
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