摘要
含油污泥的减量化、资源化利用是目前环境工程研究的热点问题。本研究利用正交试验对三种含油污泥样品进行热解获得热解残渣,对热解残渣进行表征分析,筛选比表面积最优的热解残渣作为载体,采用浸渍法将铁、镍、钙、铝活性物质负载到热解残渣载体上制成催化剂,探讨了加入两种催化剂对含油污泥的催化热解效果。结果表明:三种油泥中管线刺漏油泥在热解温度550℃、热解时间3h条件下,生成最大比表面积热解残渣。采用浸渍法成功将铁、镍、钙、铝活性物质负载到热解残渣载体上,制备了钙铝合基热解残渣催化剂和铁镍合基热解残渣催化剂。将催化剂应用于混合油泥和罐底油泥的热解得出,与不添加催化剂相比,加入钙铝合基热解残渣催化剂渣场混合油泥含油率从1.54%下降到0.03%,加入铁镍合基热解残渣催化剂后含油率从1.54%下降到0.05%,铁镍合基热解残渣催化剂热解比钙铝合基热解残渣催化剂热解油回收率高5.17%;比不加催化剂热解高13.68%。罐底油泥在加入铁镍合基热解残渣催化剂热解后,油回收率比钙铝合基热解残渣催化剂热解高10.58%。综合来看,铁镍合基热解残渣载体催化剂对两种含油污泥的催化热解效果优于钙铝合基催化剂。
The reduction and resource utilization of oily sludge is currently hot issues in environmental engineering research. This study used orthogonal test to pyrolyze three oily sludge samples. In order to obtain pyrolysis residues, the pyrolysis residues were characterized and analyzed, and the pyrolysis residues with the best specific surface area were selected as the carrier. Active substances of nickel, calcium, and aluminum are loaded on the pyrolysis residue carrier to make a catalyst, and the catalytic pyrolysis effect of adding two kinds of catalysts on oily sludge was discussed. The results showed that among the three types of oil sludge, pipeline puncture oil sludge had the largest specific surface area of pyrolysis residue when the pyrolysis temperature was 550℃ and the pyrolysis time was 3 h. The iron, nickel, calcium, and aluminum active substances were loaded on the pyrolysis residue carrier by the impregnation method, and the calcium-aluminum-based pyrolysis residue catalyst and the iron-nickel-based pyrolysis residue catalyst were successfully prepared. The catalyst was applied to the pyrolysis of mixed oil sludge and tank bottom oil sludge. Compared with no catalyst, the oil content of mixed oil sludge was reduced from 1.54% to 0.03% after adding calcium aluminum alloy pyrolysis residue catalyst to pyrolysis. After the addition of iron-nickel-based pyrolysis residue catalyst pyrolysis, the oil content dropped from 1.54% to0.05%. The pyrolysis oil recovery rate of the iron-nickel alloy-based pyrolysis residue catalyst was 5.17% higher than that of the calcium-aluminum-based pyrolysis residue catalyst, and 13.68% higher than that of the pyrolysis without catalyst. After adding the iron-nickel-based pyrolysis residue catalyst to pyrolysis of the oil sludge at the bottom of the tank, the oil recovery rate was 10.58% higher than that of the calcium-aluminum-based pyrolysis residue catalyst. In general, the catalytic pyrolysis effect of the iron-nickel-based pyrolysis residue carrier catalyst on the two oily sludges was better than that of the calcium-aluminum-based catalyst.
作者
卢智
朱新萍
俞音
高庆国
章媛媛
姜雪
LU Zhi;ZHU Xin-ping;YU Yin;GAO Qing-guo;ZHANG Yuan-yuan;JIANG Xue(College of Pratacultural and Environmental Sciences,Xinjiang Agricultural University,Urumqi 830052,China;Xinjiang Academy of Environment Protection Science,Urumqi 830011,China;Xinjiang Key Laboratory for Environmental Pollution Monitoring and Risk Warning,Urumqi 830011,China;Xinjiang Engineering Technology Research Center for Cleaner Production,Urumqi 830011,China)
出处
《新疆农业大学学报》
CAS
2020年第6期445-452,共8页
Journal of Xinjiang Agricultural University
基金
新疆维吾尔自治区科技厅2018年自治区创新环境(人才、基地)建设专项(自然科学基金)青年科学基金项目(2018D01B34)资助。
关键词
含油污泥
热解残渣
催化热解
oily sludge
pyrolysis sediment
catalytic pyrolysis
作者简介
通讯作者:俞音,E-mail:dy_rainy@163.com;通讯作者:朱新萍,E-mail:zhuxinping1978@163.com。
