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SYSTEM AND METHOD TO REMOVE ACIDIC SPECIES FROM A RICH MEG STREAM BY STRIPPING
SYSTEM AND METHOD TO REMOVE ACIDIC SPECIES FROM A RICH MEG STREAM BY STRIPPING
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机译:通过剥离从富含浓毛细流中除去酸性物种的系统和方法
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摘要
A system and method for removing acetic acid and other short chain fatty acids described as organic acid from a rich mono-ethylene glycol (“MEG”) solution does so by stripping the organic acid from the rich MEG solution by contacting the solution with a gas, the gas being nitrogen or a fuel gas such as methane; and stripping the organic acid from the gas by contacting the gas with a caustic solution such as a dilute sodium hydroxide solution. The stripping steps take place in respective stripping columns. A portion of the gas exiting the gas/organic acid stripping column can be recycled to the MEG/organic acid stripping column to reduce total gas usage. A portion of the waste stream exiting the gas/organic acid stripping column can be recycled back to the gas/organic acid stripping column to reduce the amount of caustic solution used as well as the amount of waste.
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