Nitrogen physical adsorption and adsorption equilibrium for natural gas dehydration on zeolite 3A and 4A

2011 National Postgraduate Conference Pub Date : 2011-09-01 DOI:10.1109/NATPC.2011.6136250

N. N. Amran, A. Shariff, K. K. Lau

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引用次数: 4

Abstract

Natural gas dehydration is one of the crucial upstream operation processes to protect the gas transportation pipeline and fulfill the sale gas specification. The most commonly used technology for the gas dehydration is glycol absorption. Even though the glycol absorption is effective for practical dehydration application, but it still have various drawbacks related to its operation, environmental effect (due to chemical carry-over), large footprint, and frequent monitoring and maintenance. Physical adsorption with zeolite material has been identified as a potential alternative for dehydration technology. Based on the preliminary screening work, zeolite 3A and 4A have been identified for further performance evaluation due to its potential for practical dehydration application. The performance is based on dehydration capacity of these adsorbents which was evaluated through nitrogen physical adsorption and equilibrium adsorption using Magnetic Suspension Balance (MSB). The results showed that physical adsorption potentially gives better or at par separation efficiency as compared to absorption dehydration process and greener technology approach.

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3A和4A沸石对天然气脱水过程中氮气的物理吸附及吸附平衡

天然气脱水是保护输气管道、满足售气规范的关键上游工序之一。最常用的气体脱水技术是乙二醇吸附。尽管乙二醇吸附在实际脱水应用中是有效的，但它仍然存在与操作、环境影响(由于化学品的携带)、占地面积大以及频繁的监测和维护有关的各种缺点。沸石材料的物理吸附已被确定为一种潜在的替代脱水技术。在初步筛选工作的基础上，确定了3A和4A沸石，并对其进行了进一步的性能评价，因为它们具有实际脱水应用的潜力。通过氮气物理吸附和磁力悬浮天平(MSB)平衡吸附对吸附剂的脱水能力进行了评价。结果表明，与吸附脱水法和绿色技术相比，物理吸附法具有更好的分离效率。

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2011 National Postgraduate Conference

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