PLANT AND PROCESS FOR SEPARATING AMMONIA AND CARBON DIOXIDE CONTAINING WASTEWATER STREAM TO CONCENTRATED AQUEOUS AMMONIA SOLUTION AND PURIFIED WASTEWATER STREAM
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United States of America
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Issued Date -
Dec 5, 2024
app pub date -
Aug 24, 2022
filing date -
Aug 24, 2022
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Abstract
A process of treating a wastewater stream containing an ammonia and carbon dioxide comprising: feeding the wastewater stream into a carbon dioxide degasser column; withdrawing a gaseous carbon dioxide rich stream as a first overhead fraction and a liquid carbon dioxide depleted stream as the first bottom fraction from the carbon dioxide degasser column; feeding the liquid carbon dioxide depleted stream into an ammonia stripper column; withdrawing a gaseous ammonia rich stream as a second overhead fraction and a purified wastewater stream containing at most 1,000 ppm dissolved ammonia as a second bottom fraction from the ammonia stripper column; feeding the gaseous ammonia rich stream and separately therefrom water into a quencher column; and withdrawing a gaseous vent gas stream as a third overhead fraction and the concentrated aqueous ammonia solution containing at least 5% by weight of dissolved ammonia as a third bottom fraction from the quencher column.
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