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["En la zona de tanques, se es necesario instalar "

2019-10-31View Original

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按规范要求:罐区低压可燃液体储罐上要设置紧急泄放阀或泄压人孔,用于火灾工况下紧急泄压,请教下大家,此阀可否用安全阀代替?不能用安全阀代替的话是因为起跳压力太低吗?在有微压氮封的条件下,此阀泄放设定压力多少,是否不高于储罐设计压力即可?针对有毒介质像丙烯腈,此阀泄放后直接排空还是密闭排放,如采用泄压人孔,密闭排放需要在泄压人孔上加管道?紧急泄压阀后需加限流孔板吗?紧急泄压阀或泄压人孔在PID上图例、代号?液化烃储罐上设置了安全阀,此阀是否不需要另设了?
Reply #22019-11-06
当然不可以用安全阀代替了,起跳压力低只是一方面,最主要原因是安全阀不适用于瞬时的泄放。火灾这种极端工况,安全阀那点流量是不能满足要求的。紧急泄放阀的设定压力,要保证超亚10%小于储罐的设计压力。至于有毒有害气体,不用考虑出口接管道的问题。第一,紧急泄放阀也叫事故泄压设备,它动作的几率很低,所以不用考虑气体手机。第二紧急泄放阀动作了,这时候保护储罐是最主要的,不用考虑介质本身。SH/T3007,你可以看下。有疑问可以直接联系我,朱工,手机微信同号13912008028

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