介绍了ADV微分浮阀塔盘的结构特点及其在芳烃抽提装置改造中的工业应用情况。

This paper introduced the design features of ADV advanced micro-dispersion valve tray and its application in aromatics extraction unit.

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介绍了自密封阀在氨汽提尿素装置中的应用情况，对其泄漏原因进行了分析；并提出了具体维修方案。

The service of the self-sealed valve in Urea Plant with ammonia technic was introduced, and the cause of the seal leakage was analyzed, the solution of local maintenance was pointed out.

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在锅炉未点火启炉之前，采用液压马达助力装置主动提拉安全阀阀杆，使安全阀开启。

Before boiler working, pull the haulm of safe valve by hydraulic motor set until the safe valve spring.

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