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Electro-absorption unit for removal of volatile organic compounds and odors in gas streams
ES2967558
Electro-absorption unit for the treatment of gas streams contaminated with volatile organic compounds and odors, where the unit combines an absorption column at the top with an electrochemical cell at the bottom, both parts being adjacent and in contact through a support grid for the filling of the absorption column. The electrochemical cell further includes conductive supports on a bottom cover to connect the electromotive force source to the electrodes. The gas to be degraded enters through the interface between the support grid and rises up the column countercourrent to the liquid phase.
The integration of oxidant generation and absorption systems within a single physical space offers several important advantages in terms of process efficiency. The oxidizing gases generated in the electrolytic zone of the system (such as chlorine, ozone, etc.) can interact directly with gaseous pollutants in the gas phase, as well as being present in the liquid phase and engaging in interactions within this medium. This is the primary distinction compared to a system in which the absorption and reaction zones are separated. The degradation of contaminants in the liquid phase shifts the absorption equilibrium, allowing for a quicker retention of the contamination and, consequently, a faster disappearance of the contaminant in the gas phase. Absorption occurs in a liquid medium rich in oxidants, which helps degrade the contaminants simultaneously