轻烃的安全生产知识--杨远锋的博客

轻烃的安全生产知识

[ 2011-7-26 15:04:00 | By: 杨远锋 ]

在油气初加工的生产中，从原料到产品及一些物料，无一不是易燃易爆的气体或液体。因此，各类加工装置都设置了相当数量的安全监测及防护设施。

    1．防冻

    油气加工装置设备都是露天布置，有的单位机泵安装在室外。冬季生产中，特别在我国北方地区，设备及管线内的存水，如不及时排放，处于静止状态，就会冻结。轻度冻结，使管线堵塞不通，影响开工及正常生产的顺利进行。天气很冷时，设备及管线冻结后，体积膨胀，可能发生设备、管线或阀门冻裂，垫片冻坏等事故。如不能及时发现，当冰熔化解冻后，很可能造成严重的泄漏，引起人身中毒、爆炸、着火等一系列事故。因此，油气加工开工、停工、正常生产中都必须认真做好防冻工作。

    2．容易冻结的部位

    停用的工艺设备及管线内存水，备用机泵的泵体、水套、冷却水管以及不经常用的蒸汽及水线上的甩头和死角部位都易冻结。还有各设备底部的放水阀，管线上的低点排凝阀，靠近设备底部的液面计引线，蒸汽及水线上的压力表与流量计，压力引线等。以上这些部位在正常生产中必须加强检查，以防冻结。

    3．防冻措施

    冬季开工中，当设备及管线吹扫、试压完毕之后，设备及管线内存水，必须设法排净。在正常生产中的防冻工作是大量的。很重要的一步是必须加强放水：如塔的回流罐及再混器经常放水；备用泵按规定时间盘车；蒸汽回水系统、取暖系统、蒸汽伴热系统经常保持畅通；压力表、液位计要经常检查，并做好防冻保温工作。

    冬季停工检修时，所有工艺管线及设备，机泵设备冷却水系统必须将水放净，必要时用压缩风吹扫，以防冻坏设备及管线。检修过程中，最好不要长时间停水、停汽。如必须停水或停蒸汽时，应将设备及管线内的存水放净，必要时用压缩风吹扫。吹扫后最好将水线、汽线与所连接的设备断开(加盲板或拆法兰)，以防阀门不严进水后冻坏设备和工艺管线。

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原创

[ 2016-9-6 17:09:33 | By: 原创(游客) ]

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原创

[ 2016-9-28 16:45:03 | By: 原创(游客) ]

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原创

[ 2016-9-30 11:21:33 | By: 原创(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-11 3:35:09 | By: nkcei(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-14 17:55:14 | By: scsux(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-22 2:42:01 | By: quycg(游客) ]

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Re:在漫画中识别身边的违章

[ 2016-10-22 13:49:30 | By: afhlp(游客) ]

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

[ 2016-10-23 0:02:49 | By: uzwyc(游客) ]

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Re:在漫画中识别身边的违章

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Re:在漫画中识别身边的违章

[ 2017-2-18 18:42:15 | By: zyoqu(游客) ]

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Re:在漫画中识别身边的违章

[ 2017-3-4 0:20:07 | By: tinps(游客) ]

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