Synergy between two natural gas sweetening processes

Journal of Unconventional Oil and Gas Resources Pub Date : 2016-06-01 DOI:10.1016/j.juogr.2016.01.002

Abolghasem Kazemi , Abolfazl Gharibi Kharaji , Arjomand Mehrabani-Zeinabad , Vafa Faizi , Jalalaldin Kazemi , Ahmad Shariati

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引用次数: 13

Abstract

Merox process is a developed process for natural gas sweetening. However this process has one main disadvantage, which is the fact that carbon dioxide in the feed gas consumes the sorbent solution. High efficiency of carbonate based solutions for removal of bulk of CO₂ from natural gas is a well-known fact. The alkalinity is important in removal of acid gases by potassium carbonate solution. The main idea behind this work was to investigate the possibility of inhibition of Merox solution consumption by a synergy between Merox and carbonate based sweetening processes. In this study, a carbonate based sweetening process is simulated using Aspen Plus simulator for sweetening the natural gas produced in one of gas fields located in Iran. The effects of addition of sodium hydroxide to the solution on the gas sweetening performance and efficiency are investigated. It is revealed that modifying the solution of this process using sodium hydroxide increases the capacity of the solution in removing acid gases.

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两种天然气脱硫工艺之间的协同作用

梅罗克斯法是一种发达的天然气脱硫工艺。然而，这种方法有一个主要缺点，即原料气中的二氧化碳会消耗吸收剂溶液。碳酸盐基溶液对天然气中大量二氧化碳的高效去除是众所周知的事实。碱度是碳酸钾溶液去除酸性气体的重要因素。这项工作背后的主要思想是研究美洛克斯和碳酸盐基增甜过程之间的协同作用对美洛克斯溶液消耗的抑制可能性。在本研究中，利用Aspen Plus模拟器模拟了伊朗某天然气田的碳酸盐岩脱硫过程。研究了在溶液中加入氢氧化钠对气体脱硫性能和效率的影响。结果表明，用氢氧化钠对该工艺溶液进行改性，提高了溶液对酸性气体的去除能力。

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Journal of Unconventional Oil and Gas Resources

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