Black Powder in Sales Gas Pipelines: Sources and Technical Recommendations

Faisal Al Wahedi, M. Saleh, Z. Dadach
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引用次数: 3

Abstract

One of the most severe problems affecting the efficient operations of gas pipelines is corrosion caused by black powder. According to the literature, the primary source for the existence of black powder is condensed water. In this case study, the temperature (40°C) of the sales gas is much higher than its dew point (9.24°C). The water is therefore in vapor phase. It is then proposed to remove water vapor from the gas at the entrance of the plant using an adsorption process. The recommended technology is the Layered Bed Temperature-Swing Adsorption (LBTSA) with micro-channels with molecular sieve zeolite 4A and activated alumina as adsorbents. In the case of presence of aerosols that could condense water, it is suggested to utilize a RED (Rare Earth Drum) magnetic separator in order to remove black powder from the gaseous feed.
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销售天然气管道中的黑火药:来源和技术建议
影响输气管道高效运行的最严重问题之一是黑火药对管道的腐蚀。根据文献,黑火药存在的主要来源是冷凝水。在本案例中,销售气体的温度(40°C)远高于露点(9.24°C)。因此水处于气相。然后建议使用吸附过程从工厂入口的气体中去除水蒸气。推荐采用以分子筛4A沸石和活性氧化铝为吸附剂的微通道层状床变温吸附(LBTSA)技术。在存在可能凝结水的气溶胶的情况下,建议使用RED(稀土鼓)磁选机,以便从气态进料中去除黑色粉末。
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