非能动氢复合器性能验证试验方法研究
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摘要
消氢启停阈值和消氢速率是非能动氢复合器的关键性能参数。本文设计了一种直观方便的非能动氢复合器性能验证试验方法:将非能动氢复合器放于密闭容器中,并通入氢气,只要氢复合器启动消氢反应且整条消氢过程曲线在给定值直线A以下,则验证了启动阈值不大于给定值A;只要消氢过程曲线最终的水平段在给定值直线B以下,则验证了停止阈值不大于给定值B;只要氢复合器达到稳定消氢状态,通入容器的氢气质量流量即为消氢速率。本文设计并搭建了试验装置,采用非能动氢复合器样机PARQX-15进行消氢性能验证试验,成功验证了消氢启动阈值<2%(体积浓度,下同),停止阈值<0.5%,消氢速率大于536 g/h,证明了试验方法的实用性和有效性。
The startup and stop threshold of hydrogen recombination and the hydrogen removing rate are key performance indexes for the passive autocatalytic hydrogen recombiner(PAR). A straightforward and convenient experimental method for validating the performance of PAR is proposed. Put PAR in an airtight vessel, and hydrogen is feed to the vessel. If the PAR start hydrogen recombination and whole inlet hydrogen concentration variation curve versus time is under given line A, the startup threshold is confirmed to be not greater than A. If the final horizontal segment of the inlet hydrogen concentration variation curve versus time is under given line B, the stop threshold is confirmed to be not greater than B. If PAR realized steady operation status, the average flow rate of hydrogen fed into the vessel is the hydrogen removing rate. Test rig is designed and setup, and the experiment for validating the performance of PARQX-15 PAR is carried out.Successfully, the startup threshold is confirmed to be not greater than 2(v)%, and stop threshold is confirmed to be not greater than 0.5(v)%, and the hydrogen removing rate is greater than 536 g/h.Conclusion can be made that this method is practical and effective.
The startup and stop threshold of hydrogen recombination and the hydrogen removing rate are key performance indexes for the passive autocatalytic hydrogen recombiner(PAR). A straightforward and convenient experimental method for validating the performance of PAR is proposed. Put PAR in an airtight vessel, and hydrogen is feed to the vessel. If the PAR start hydrogen recombination and whole inlet hydrogen concentration variation curve versus time is under given line A, the startup threshold is confirmed to be not greater than A. If the final horizontal segment of the inlet hydrogen concentration variation curve versus time is under given line B, the stop threshold is confirmed to be not greater than B. If PAR realized steady operation status, the average flow rate of hydrogen fed into the vessel is the hydrogen removing rate. Test rig is designed and setup, and the experiment for validating the performance of PARQX-15 PAR is carried out.Successfully, the startup threshold is confirmed to be not greater than 2(v)%, and stop threshold is confirmed to be not greater than 0.5(v)%, and the hydrogen removing rate is greater than 536 g/h.Conclusion can be made that this method is practical and effective.
引文
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[2]REINECKE E A,BENTAIB A,KELM S,et al.Open issues in the applicability of recombiner experiments and modelling to reactor simulations[J].Progress in Nuclear Energy,2010,52:136-147.
[3]HUANG X G,YANG Y H,ZHANG S X.Analysis of hydrogen risk mitigation with passive autocatalytic recombiner system in CPR1000 NPP during a hypothetical station blackout[J].Annals of Nuclear Energy,2011,38:2762-2769.
[4]JAE WON PARK,BYUNG RYUNG KOH,KUNE YSUH.Demonstrative testing of honeycomb passive autocatalytic recombiner for nuclear power plant[J].Nuclear Engineering and Design,2011,241:4280-4288.
[5]FINESCHI F,BAZZICHI M,CARCASSI M.A study on the hydrogen recombination rates of catalytic recombiners and deliberate ignition[J].Nuclear Engineering and Design,1996,166:481-494.
[6]THOMAS K BLANCHAT,ASIMIOS MALLIAKOS.Analysis of hydrogen depletion using a scaled passive autocatalytic recombiner[J].Nuclear Engineering and Design,1999,187:229-239.