长庆油田保障点建筑室外颗粒物污染预测

Prediction of Outdoor Particulate Pollution in the Supply Station of Changqing Oilfield

长庆油田的前线生产保障点建筑大多距离油气生产区域较近;因此,附着有油气田污染性废气的颗粒物有可能随空气流动进入办公区域,对工作人员的身体健康产生影响。为了保证油田保障点的室内空气质量,采用计算流体动力学的方法对保障点建筑的室外颗粒物扩散和分布情况进行预测。以环江作业区保障点为例,建立了其建筑物的三维模型,根据当地的气象条件,模拟计算了以PM10为代表的污染性颗粒物对保障点建筑的污染情况。计算结果显示,室外颗粒物对保障点建筑造成了严重污染。通过分析计算结果,对保障点建筑的颗粒物污染防治问题提出了若干建议,能够改善保障点的室内外空气质量和建筑风环境,降低室外颗粒物在建筑内的浓度,保证工作人员的身体健康。对新建保障点的选址和已建的建筑室外颗粒物污染较严重的保障点的治理具有重要的参考价值。

The supply stations of Changqing Oilfield are mostly located nearby the oil and gas production area. Pollutant gases generated from the oil and gas production area can be absorbed by the outdoor particulate matters(PM), which may have negative impacts on the health of the staff while spreading over the office area. In order to ensure the indoor air quality of the supply station, computational fluid dynamics(CFD) method was used to predict the diffusion and distribution of outdoor particulates in the supply station. Taking Huanjiang oilfield as an example, we established a threedimensional model of the buildings to simulate the PM pollution(mainly PM10) in the supply station. The result shows that the building environment is significantly polluted by PM10. Based on the simulations, several advices are given to control PM10 pollution in the supply station and to protect the staff from the pollution. Furthermore, these advices can be valuable for other polluted supply stations, and also be useful to select location for future supply stations.