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Low temperature pyrolysis of refinery oily sludge
Author(s): 
Pages: 123-126,130
Year: Issue:  3
Journal: Petrochemical Industry Application

Keyword:  含油污泥低温热解热解油回收率;
Abstract: 延长油田某炼厂含油污泥的含水率为19.63%,含油率为28.85%,外观呈油黑色,具有较大的回收利用价值.以热解油回收率为考核指标,通过单因素实验和正交实验对某炼厂含油污泥热解参数进行了优化,研究了热解终温、停留时间、氮气流速、升温速率以及加热方式对热解油回收率的影响规律,并初步分析了热解终温对热解油凝点的影响.结果表明,热解时间对热解油回收率影响最大,氮气流速无明显影响.最佳热解条件为:污泥初温时加入热解炉,热解终温440℃、停留时间4h、氮气流速80 mL·min-1、升温速率10℃·min-1,此时的热解油回收率最大,达到73.56%.另外,在热解终温400℃~450℃范围内,随着温度的升高,热解油的凝固点逐渐降低.
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