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近年来,国内炼油厂出现多起因压力管道受压元件失稳破裂,造成重大的设备事故。1983年5月9日,我厂石脑油加氢装置的反应物一氢气换热器,循环氢入口管Cr5Mo 钢制大小头,在正常运转参数下破裂泄漏但未造成破坏性事故。后将该大小头进行了取样分析,结果如下:一、介质条件工作温度常温工作压力～40公斤/厘米~2工作介质氢气(85～86%)+0.4%硫化氢+水或水汽(微量)使用时间仅半年二、大小头及焊缝成分分析
In recent years, many refineries in China appeared due to instability and rupture of pressure components of pressure pipes, resulting in major equipment accidents. May 9, 1983, I plant naphtha hydrogenation reactor reactants a hydrogen heat exchanger, recycled hydrogen inlet pipe Cr5Mo steel head size, under normal operating parameters of the rupture leak but did not cause destructive accidents. The size of the head after a sample analysis, the results are as follows: First, the media conditions Working temperature at room temperature Working pressure ~ 40 kg / cm ~ 2 Working medium Hydrogen (85 ~ 86%) + 0.4% Hydrogen sulfide + water or water vapor The use of time is only six months, the size of the head and weld analysis