炼油装置有害气体泄漏区域风险等级划分

以典型场景为代表开展的气体泄漏扩散模拟研究未能体现炼油装置的真实泄漏风险。提出一种基于泄漏场景集的炼油装置有害气体泄漏区域风险等级划分方法。融合泄漏源和风场等重要随机因素生成泄漏场景集,定量预测场景发生概率,采用计算流体力学方法(CFD)预测气体泄漏扩散体积分数场。基于场景概率和泄漏后果,得到各场景有害气体泄漏区域风险矩阵。结果表明:构建的有害气体泄漏场景集能够定量预测场景发生概率;建立的炼油装置有害气体泄漏精细CFD模型能够预测有害气体泄漏场景后果;表征各场景有害气体泄漏区域风险的区域风险矩阵可以划分符合真实情况的炼油装置有害气体泄漏区域风险等级。

Area risk level classification for hazardous gas release in petroleum refining installations

The prediction results obtained from simulation of typical release scenarios for petroleum refining installations have difficulties in reflecting the real risk of hazardous gas release. In order to solve this problem, a new method of area risk level classification for hazardous gas release was proposed. It combines wind filed set and release source set to build the release scenario set and predicts the probability of each release scenario. Computational fluid dynamics (CFD) method was used to predict the concentration field of gas leakage diffusion. Based on the leakage probability and consequences, the risk matrix of hazardous gas leakage area could be achieved. The research results indicate that the release scenario set for hazardous gas could predict the probability of each scenario quantitatively and the CFD model of hazardous gas leakage in a petroleum refining installation could predict its consequence. The risk matrix of hazardous gas leakage area would provide useful reference for classifying the area risk level in petroleum refining installations.