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首页> 外文会议>2002 ASME Pressure Vessels and Piping Conference, Aug 5-9, 2002, Vancouver, British Columbia, Canada >HIGH PRESSURE SAFETY RELIEF VALVES IN ETHYLENE SERVICE
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HIGH PRESSURE SAFETY RELIEF VALVES IN ETHYLENE SERVICE

机译：乙烯服务中的高压安全阀

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摘要

Research conducted in a high pressure polyethylene plant in Belgium, indicates that certain conventionally designed and scaled-up safety relief valves did not open consistently with ethylene at 300 barg and also at 250 barg. Comparative tests in the high capacity at the High Pressure Laboratory of a German safety relief valve manufacturer showed that the same conventionally designed and scaled-up safety relief valves tested at a set pressure of 250 barg had high lift fluctuations on air but did not open on water. It was also demonstrated that a safety relief valve designed by a German manufacturer, which opened reliably on air and on water at a set pressure of 250 barg also opened reliably on ethylene at a set pressure of 250 barg (i.e. supercritical condition). The comparative tests with ethylene in the polyethylene plant in Belgium showed also that the blow down values on that valve with ethylene are similar to the blow down values with water. Therefore it looks like the flow behavior in the safety relief valve with supercritical ethylene is similar as with a liquid. This plant testing on ethylene at 250 barg indicates that there are advantages to using the German manufacturer's designed safety relief valves with the certified "one trim design" for liquid and gas.
机译：在比利时的高压聚乙烯工厂进行的研究表明，某些常规设计和按比例放大的安全泄压阀在乙烯压力为300 barg和250 barg时不能始终打开。在德国安全泄压阀制造商的高压实验室进行的高容量比较测试表明，在250 barg的设定压力下测试的相同常规设计和按比例放大的安全泄压阀在空气中的升程波动较大，但在打开时不会打开水。还证明了由德国制造商设计的安全泄压阀，其在设定压力为250 barg的空气和水上可靠地打开，并且在设定压力为250 barg的乙烯（即超临界条件）下也可靠地打开。在比利时的聚乙烯工厂中使用乙烯进行的对比测试还表明，该阀门上带有乙烯的放气值类似于水的放气值。因此，看起来超临界乙烯在安全释放阀中的流动行为与液体相似。在250 barg的乙烯上进行的工厂测试表明，使用德国制造商设计的安全泄压阀具有经过认证的液体和气体“一体装饰设计”的优点。

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