Process for the purification of an alkanolamine
First Claim
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1. A process for the purification of an aqueous alkanolamine comprising:
- distilling the alkanolamine in one or more steps, the steps comprising;
dehydrating the alkanolamine; and
,further purifying the alkanolamine.
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Abstract
A process for the purification of an aqueous alkanolamine which process involves subjecting the alkanolamine to a distillation process carried out in one or more film-type evaporators and involves at least two steps, wherein in the first step water is removed from the aqueous alkanolamine and in the second step the de-watered alkanolamine is further purified.
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9 Claims
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1. A process for the purification of an aqueous alkanolamine comprising:
distilling the alkanolamine in one or more steps, the steps comprising; dehydrating the alkanolamine; and
,further purifying the alkanolamine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A process for the separation of acidic compounds from an acidic gas stream which comprises the following steps:
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a) contacting the acidic gas stream with an aqueous alkanolamine to yield a purified gas stream and a fat aqueous alkanolamine; b) regenerating the fat aqueous alkanolamine by thermal desorption of the absorbed acidic compounds, to yield a lean aqueous alkanolamine and a stream of acidic compounds; c) recycling the lean aqueous alkanolamine to step a); d) reclaiming part of the aqueous alkanolamine by subjecting it to a continuous or batch process comprising one or more steps, the steps comprising; dehydrating the alkanolamine; and
,further purifying the alkanolamine.
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Specification