浅谈石油、化工企业蒸汽计量仪表的选用

在石油、化工企业中蒸汽被普遍使用,包括饱和蒸汽和过热蒸汽。而在生产实践中,对于蒸汽这两种存在状态的计量问题都有一定的难度,其中饱和蒸汽的测量难点在于:一是蒸汽中会出现的汽、水两相流测量问题,对其干度的修正很难得到正确的数值;二是蒸汽使用的最终用户多为中、小型装置,存在着用汽量经常波动较大幅度的因素,因适应范围要求大计量仪表的难以适应。对于过热蒸汽计量的麻烦要小于饱和蒸汽。除以上原因外,再加上仪表自身性能的缺陷,也会造成计量误差过大。本文就几种常用蒸汽计量仪表的优劣势进行分析,以达到在实际工作中权衡利弊,选用适宜的计量仪表。

Commercial Application of Technology for Catalytic Combustion of Waste Gases from Wastewater Treatment System in Petrochemical Enterprises

The catalytic combustion technology for treating waste gases exiting from wastewater treatment system and oil separators in petrochemical enterprises was introduced in this article. Commercial application of this technology showed that the process ＂desulfurization and total hydrocarbon concentration homogenizationcatalytic combustion＂ and the associated WSH-1 combustion catalyst were suitable for treating volatile organic gases emitted from the oil separators, floatation tanks, inlet water-collecting well, waste oil tanks, etc. The commercial unit was equipped with an advanced auto-control system, featuring a simple operation and low energy consumption with good treatment effect. The purified gases could meet the national emission standard.