MDEA wet flue gas desulfurization
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MDEA is used for wet carbon dioxide removal; the product is carbon dioxide. In the simulation experiments, the feed materials include nitrogen/oxygen/sulfur dioxide/water vapor, with a water vapor content of 5%, and the MDEA solution has a concentration of 30 wt%. Since water is present in the feed materials, could this lead to an accumulation of water and thus a dilution of the MDEA solution? How can the concentration of MDEA be maintained? Thank you!
The output from the top of the regenerator is carbon dioxide and water vapor. During actual operation, desalinated water must be continuously added; otherwise, the MDEA concentration will keep rising.
The MDEA concentration should be maintained at 35%-45%, using demineralized water or pure water
By keeping the temperature of the gas entering the tower roughly the same as that of the gas exiting the tower, it is possible to maintain a relatively constant solution concentration; otherwise, differences in temperature between the incoming and outgoing gases will result in varying water amounts, leading to a water imbalance.
During production, the total amount of MDEA solution continuously decreases, necessitating constant water replenishment. To maintain alkalinity, MDEA must also be added periodically.