Regeneration of Carbon Dioxide Saturated Monoethanolamine-Glycol Aqueous Solutions at Atmospheric Pressure in a Packed Bubble Reactor

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• 作者：Owen J. Curnow ; Susan P. Krumdieck ; and Elizabeth M. Jenkins
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2005
• 出版时间：February 16, 2005
• 年：2005
• 卷：44
• 期：4
• 页码：1085 - 1089
• 全文大小：138K
• 年卷期：v.44,no.4(February 16, 2005)
• ISSN：1520-5045

文摘

A method has been investigated for regeneration of CO₂-saturated monoethanolamine (MEA)aqueous solution at low temperature and atmospheric pressure, with a rapid regeneration rateand low evaporation solution loss. The solution of 50 wt % MEA, 35 wt % water, and 15 wt %glycol was saturated with CO₂ through addition of dry ice, and the regeneration rate wasmeasured as a function of temperature and flow rate of an inert gas through the solution in apacked bubble reactor. An infrared CO₂ detector was used to measure the CO₂ concentration inthe flushing gas to determine total percent regeneration over a period of time at a giventemperature. The bubbling flow through the reactor was found to greatly enhance theregeneration rate and total amount of regeneration. It is possible with the packed bubble reactorto regenerate MEA solutions to 40% CO₂ at temperatures below 90 C.