WASTE WATER TREATMENT BY EVAPORATION AND PREVENTION OF FOULING WITH CLEANING PARTICLES
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United States of America Patent
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Jul 7, 2022
app pub date -
May 29, 2020
filing date -
May 31, 2019
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Abstract
A process for the evaporation of a waste water stream having a mixture of inorganic and organic materials is provided. The process includes passing a waste water stream together with cleaning particles through a shell and tube heat exchanger of a forced circulation evaporator to mitigate scaling on the internal surface of the heat exchanger through which the stream of waste water flows. In another aspect, the invention concerns a forced circulation evaporator having a fluidized bed heat exchanger suitable for carrying out the method. The evaporator is located after a chemical process plant that produces a waste water containing a mixture of inorganic and organic materials, preferably after a dyestuff manufacturing plant.
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