天然气处理厂放空火炬系统的稳定性分析

以苏里格气田第四处理厂的放空火炬系统为研究对象,对其破坏原因及机制进行研究,提出稳定性破坏的概念,把火炬管与塔架之间的相互作用简化为弹簧约束,利用能量法和有限元法分析火炬失稳破坏的临界条件。结果表明:内压降低了火炬管的稳定性,而外压增强了火炬管的稳定性。两种分析方法得到了很接近的结果,证明了该理论方法的可行性。

Stability analysis of venting and flare stack system in natural gas processing plant

The venting and flare stack system of the fourth natural gas processing plant in Sulige Gas-field was taken as the research project. By analyzing the causes and mechanism of such destruction comprehensively, the concept of the destruction of stability was put forward, and the interaction between flare and tower was simplified as spring constraint. The critical conditions of the flare instability and failure were analyzed using the energy method and finite element method. The results show that the internal pressure decreases the stability of flare, while the external pressure enhances the stability of flare. The results of two analytical methods are consistent, which confirms the feasibility of the theoretical method.