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公开(公告)号：US09732019B1
公开(公告)日：2017-08-15
申请号：US15089076
申请日：2016-04-01
发明人： Steven Langley , David John Knight
CPC分类号： C07C29/76 , B01D3/00 , B01D3/143 , B01D3/343 , B01D53/72 , B01D53/78 , C07C29/80 , C07C51/412 , C10L3/107 , C07C31/202 , C07C53/10
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 takes 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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公开(公告)号：US20180029963A1
公开(公告)日：2018-02-01
申请号：US15675260
申请日：2017-08-11
发明人： Steven Langley , David John Knight
IPC分类号： C07C29/76 , B01D3/00 , C10L3/10 , C07C29/80 , C07C53/10 , B01D53/72 , C07C51/41 , B01D3/14 , C07C31/20 , B01D53/78 , B01D3/34
CPC分类号： C07C29/76 , B01D3/00 , B01D3/143 , B01D3/343 , B01D53/72 , B01D53/78 , C07C29/80 , C07C51/412 , C10L3/107 , C07C31/202 , C07C53/10
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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公开(公告)号：US10144686B2
公开(公告)日：2018-12-04
申请号：US15675260
申请日：2017-08-11
发明人： Steven Langley , David John Knight
IPC分类号： C07C29/76 , B01D3/00 , B01D53/00 , B01D53/78 , C10L3/10 , B01D3/34 , C07C51/41 , B01D3/14 , C07C29/80 , B01D53/72
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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