热解终温对含油污泥三相产物特性的影响

为实现含油污泥的资源化利用，以罐底油泥为研究对象并以油回收率为考核指标，对热解终温对油泥三相产物的影响进行了研究。结果表明，最佳热解条件是：升温速率为10 ℃·min⁻¹、载气中最佳氧气体积分数为4.2%。在400~800 ℃范围内，随着温度的升高，回收的热解油产率由16.43%提升至21.46%，后又降至14.15%；热解气产率由9.12%提升到了27.87%，热解残渣中可回收组分含量由39.1%降至16.5%。热解油中主要为轻质组分，油的品质较高；热解气中主要成分为CO₂和CO，且温度越高可燃气比例越高。对热解残渣进行电镜分析发现，渣体表面没有结焦现象，残渣表现出良好的吸附性能。本研究可为含油污泥热解处理资源化提供参考。

Effect of final pyrolysis temperature on characteristics of three-phase products of oily sludge

In order to realize the resource utilization of oily sludge, the effect of final pyrolysis temperature on three-phase products of oily sludge was investigated with the tank bottom sludge as the research object and the oil recovery rate as the assessment index. The experimental results were summarized as follows. The optimal pyrolysis condition was set with heating rate as 10 ℃·min−1 and oxygen concentration in carrier gas as 4.2%. In the range of 400~800 ℃, with the elevation of temperature, the yield of recovered pyrolysis oil increased from 16.43% to 21.46% and then decreased to 14.15%, the pyrolysis gas yield increased from 9.12% to 27.87%, and the content of recoverable components in residues decreased from 39.1% to 16.5%. The pyrolytic oil was mainly composed of light components in high quality. In addition, the main components of pyrolysis gas are CO2 and CO, and the higher the temperature is, the higher the proportion of combustible gas is. Moreover, no coking was on surface by electron microscope analyses and the pyrolytic residue showed good adsorption capability, which ensured the possible employment as an adsorbent. This study can provide reference for resource utilization of oily sludge pyrolysis treatment.