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首页> 外文会议>The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)论文集 >Simulation and Analysis on Safe Operation of Hot Waxy Crude Oil Pipeline at Low Flow Rate
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Simulation and Analysis on Safe Operation of Hot Waxy Crude Oil Pipeline at Low Flow Rate

机译：低流量热蜡原油管道安全运行仿真分析。

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摘要

The waxy crude oil, with high freezing point and high viscosity in domestic oil field, is transported through heating system. If the pipeline flow is lower than the critical safe flow rate on the pipeline operation characteristic curve, then the operation of heat oil pipeline system would come into "the unsteady operating area", and even more rigorous accident that the waxy pipe coagulated would happen. Considering three factors were adjustable factor, nature factor and extreme weather such as rainstorm and cold wave, this study simulated numerically the pipeline operation characteristics to ascartain the critical safe flow rate. Through simulating a running pipeline which transported the Zhongyuan oil, the critical safe flow rate is mostly affected by the natural soil temperature around the buried pipe, overall heat transfer coefficient and wax deposit thickness in the crude pipe. Therefore, while operate the low flow waxy pipeline, we should watch out for the running condition, simulate periodically the safe characteristics, especially in the different seasons and the extreme weather, calculate the critical safe flow rate, for running in the steady operating area and deerensing or avoiding the serious coagulated accident.
机译：在国内油田中，具有高凝固点和高粘度的蜡质原油通过加热系统进行运输。如果管道流量低于管道运行特性曲线上的临界安全流量，则热油管道系统的运行将进入“不稳定运行区域”，甚至会发生蜡质管道凝结的更加严峻的事故。考虑到三个因素：可调节因素，自然因素和极端天气，如暴雨和冷浪，本研究对管道的运行特性进行了数值模拟，以确保临界安全流量。通过模拟输送中原油的运行管道，临界安全流量主要受埋管周围的自然土壤温度，总传热系数和原油管中蜡沉积厚度的影响。因此，在运行低流量蜡质管道时，应注意运行条件，定期模拟安全特性，尤其是在不同季节和极端天气下，计算临界安全流量，以在稳定运行区域内运行。防止或避免严重的凝结事故。

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