油基岩屑热脱附处理工艺参数优化

为了探究热脱附装置降低能耗的方法，对新疆油田某井油基岩屑热脱附处理工艺参数进行了研究。结果表明：在残渣的含油率≤2%的标准下，当加热温度、停留时间、油基岩屑固相含量这3个关键因素变量分别为350~550 ℃、35~55 min、60%~90%时，油基岩屑热脱附处理后残渣的含油率能达到标准要求；在以上条件下，以能耗为考核指标，通过响应曲面法研究发现，单因素变量的交互项均对能耗影响显著；将加热温度由550 ℃降低至430 ℃时，停留时间由45 min降至40 min，能耗可节约17.47%，残渣的含油率<0.3%；通过调整热脱附工艺参数，可在油基岩屑热脱附处理后残渣的含油率达标的基础上，实现节能降耗。上述研究结果可为合理设置油基岩屑热脱附装置的运行工艺参数提供参考。

Parameters optimization of thermal desorption process treating oil-based cuttings

In order to explore ways to reduce energy consumption in thermal desorption equipment, the process parameters optimization of the thermal desorption process treating oil-based cuttings in a well of Xinjiang Oilfield was studied. The result showed that under the standard of residual oil content less than 2%, when the heating temperature, residence time, and solid phase content of oil-based cuttings were in range of 350~550 °C, 35~55 min, and 60%~90%, respectively, the residual oil content after thermal desorption treating the oil-based cuttings could meet the requirements. Among the above ranges, energy consumption was taken as the evaluation index, the study with the response surface method indicated that the interaction terms of single factor variables had significant impacts on the energy consumption. When the heating temperature decreased from 550 °C to 430 °C, and the residence time decreased from 45 min to 40 minutes, the energy consumption could be saved by 17.47%, and the residual oil content reached less than 0.3%. This research shows that adjusting the process parameters of thermal desorption energy could achieve saving and consumption reduction on the premise of meeting the standard for the residual oil content after thermal desorption treating the oil-based cuttings, aiming at providing support for the reasonable setting of the operating parameters of the thermal desorption device treating oil-based cuttings.