大港油田含油污泥热解处理实验研究

Catalytic thermal pyrolysis for recycling and disposal of oily sludge

采用热解法对含油污泥进行处理。经过筛选,选取活性白土作为催化剂,分别研究反应时间、反应温度、加热速率和氮气吹扫量对热解处理效果的影响。4个影响因素对液相收率的影响顺序为:氮气吹扫量>反应温度>反应时间>加热速率;对反应转化率的影响顺序为:反应温度>反应时间>氮气吹扫量>加热速率。实验理想的反应参数为:反应时间60min,反应温度490℃,加热速率4℃/min,氮气吹扫量90mL/min。

Oily sludge is a hazardous solid waste containing a large recoverable oil content. Extensive thermal pyrolysis runs, employing active floridin as the catalyst, were performed on an oily sludge sample of Dagang oilfield to determine the effects of reaction time, reaction temperature, heating rate and nitrogen gas flux on the oil recovery and/or the conversion efficiency. The order of the 4 process variables that affected the oil recovery, in decreasing order, was： nitrogen flux, reaction temperature, reaction time and heating rate, while the order of the effect on the conversion was.. reaction temperature, reaction time, nitrogen flux and heating rate. The best treatment performance was obtained under the conditions： reaction time= 60 min, reaction temperature= 490℃, heating rate： 4 ℃/min, and nitrogen flux=90 mL/min.