Distillation: processes – separatory – And recovering heat by indirect heat exchange – Utilizing recovered heat for heating feed
Patent
1992-02-18
1992-10-06
Bascomb, Jr., Wilbur
Distillation: processes, separatory
And recovering heat by indirect heat exchange
Utilizing recovered heat for heating feed
203 37, 203 47, 203 87, 203 94, 203100, 423229, 564497, B01D 310, C07C20984
Patent
active
051528878
ABSTRACT:
When regenerating gas treating chemicals such as diethanolamine solution, the usual practice is to subject the chemicals to steam stripping. Ultimately such action is ineffective, and it is necessary to discard the chemicals. The waste chemical can be reclaimed by preheating the chemical in a countercurrent heat exchanger, in which heat is recovered from an already processed product; using a still to separate the preheated, partially vaporized chemical from the remainder of the chemicals; i.e. impurities or still bottoms; heating the still bottoms and recycling such bottoms for mixing with the partially vaporized chemical immediately upstream of the still; returning the separated vapor product from the still to the heat exchanger for heating feed chemical; and separating the thus partially condensed product in a separator to yield reclaimed gas treating chemical.
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Beasley Todd
Merritt Dwight A.
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