Method for Removing Foulants from a Heat Exchanger through Coolant Flow Control
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United States of America Patent
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Issued Date -
Nov 15, 2018
app pub date -
May 11, 2017
filing date -
May 11, 2017
priority date (Note) -
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Abstract
A method for removing a foulant from a heat exchanger is disclosed. A process fluid, comprising a process liquid and a fouling component, are provided to a process side of the heat exchanger. A flow of a coolant to the coolant side is provided by opening an inlet to the coolant side. The process fluid is cooled, a portion of the fouling component desublimating, crystallizing, freezing, condensing coupled with solidifying, or a combination thereof as a first portion of the foulant onto an outer surface of the coolant side. The inlet to the coolant side is periodically closed such that the flow of the coolant slows or stops, warming the process side, and causing the first portion of the foulant to sublimate, melt, absorb, or a combination thereof off the outer surface of the coolant side. The process then returns to the providing the flow of the coolant step.
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